UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-CSR

CERTIFIED SHAREHOLDER REPORT OF REGISTERED

MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number

 811-21409

Pioneer Municipal High Income Advantage Trust

(Exact name of registrant as specified in charter)

60 State Street, Boston, MA 02109

(Address of principal executive offices) (ZIP code)

Terrence J. Cullen, Amundi Asset Management, Inc.,

60 State Street, Boston, MA 02109

(Name and address of agent for service)

Registrant’s telephone number, including area code:  (617) 742-7825

Date of fiscal year end:  March 31, 2021

Date of reporting period:  April 1, 2020 through March 31, 2021

Form N-CSR is to be used by management investment companies to file reports with the Commission not later than 10 days after the transmission to stockholders of any report that is required to be transmitted to stockholders under Rule 30e-1 under the Investment Company Act of 1940 (17 CFR 270.30e-1).  The Commission may use the information provided on Form N-CSR in its regulatory, disclosure review, inspection, and policymaking roles.

A registrant is required to disclose the information specified by Form N-CSR, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-CSR unless the Form displays a currently valid Office of Management and Budget (“OMB”) control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609.  The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. ss. 3507.

Pioneer Municipal High

Income Advantage Trust*

Annual Report | March 31, 2021

Ticker Symbol: MAV

* On April 21, 2021, the Trust redomiciled from a Delaware statutory trust to a Maryland corporation and was renamed Pioneer Municipal High Income Advantage Fund, Inc.

Paper copies of the Trust’s shareholder reports are no longer sent by mail, unless you specifically request paper copies of the reports from the Trust or from your financial intermediary, such as a broker-dealer, bank or insurance company. Instead, the reports are available on the Trust’s website, and you will be notified by mail each time a report is posted and provided with a website link to access the report.

You may elect to receive all future reports in paper free of charge. If you invest through a financial intermediary, you can contact your financial intermediary to request that you continue to receive paper copies of your shareholder reports. Your election to receive reports in paper will apply to all funds held in your account if you invest through your financial intermediary or all funds held within the Pioneer Fund complex if you invest directly.

visit us: www.amundi.com/us

Table of Contents
President’s Letter	2
Portfolio Management Discussion	4
Portfolio Summary	10
Prices and Distributions	12
Performance Update	13
Schedule of Investments	14
Financial Statements	24
Notes to Financial Statements	30
Report of Independent Registered Public Accounting Firm	42
Additional Information	44
Investment Objectives, Principal Investment Strategies
and Principal Risks	45
Effects of Leverage	72
Trustees, Officers and Service Providers	74

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 1

President’s Letter


Dear Shareholders,

The first few months of 2021 have brought some better news on the COVID-19 global pandemic front, as the deployment of the first approved COVID-19 vaccines is well underway, with expectations for widespread vaccine distribution by the middle of the year. In general, COVID-19 cases and related hospitalizations have been on the decline in the US, despite a few problematic “hot spots” in some states, and that has had a positive effect on overall market sentiment.

While there may finally be a light visible at the end of the pandemic tunnel, the long-term impact on the global economy from COVID-19, while currently unknown, is likely to be considerable. It is clear that several industries have already felt greater effects than others, and the markets, which do not thrive on uncertainty, have been volatile. With that said, in the first few months of 2021, equity markets and other so-called “riskier” assets, such as high-yield bonds, have outperformed investments regarded as less risky, such as government debt. In addition, we’ve witnessed the long-awaited rebound in the performance of cyclical stocks, or stocks of companies with greater exposure to the ebbs and flows of the economic cycle, as investors have appeared to embrace the potential for a more widespread reopening of the economy in the coming months. Additional fiscal stimulus from the US government in recent months has also helped provide some market momentum.

However, despite the dramatic market rebound since its March 2020 low point, volatility has remained elevated, with momentum rising and falling on seemingly every bit of positive or negative news about the virus. In addition, the recent US Presidential and Congressional elections have resulted in a power shift in Washington, DC, and that most likely portends some changes in fiscal policy above and beyond just additional pandemic-related stimulus. That, too, could lead to increased market volatility as investors analyze the various tax and spending plans, and wait to see what proposed policy alterations actually become law.

With the advent of COVID-19 in early 2020, we implemented our business continuity plan according to the new COVID-19 guidelines, and most of our employees have been working remotely since March 2020. To date, our operating environment has faced no interruption. I am proud of the careful planning that has taken place and confident we can maintain this environment for as long as is prudent. History in the making for a company that first opened its doors way back in 1928.

2 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

Since 1928, Amundi US’s investment process has been built on a foundation of fundamental research and active management, principles which have guided our investment decisions for more than 90 years. We believe active management – that is, making active investment decisions – can help mitigate the risks during periods of market volatility. As 2020 has reminded us, investment risk can arise from a number of factors in today’s global economy, including slower or stagnating growth, changing U.S. Federal Reserve policy, oil price shocks, political and geopolitical factors and, unfortunately, major public health concerns such as a viral pandemic.

At Amundi US, active management begins with our own fundamental, bottom-up research process. Our team of dedicated research analysts and portfolio managers analyzes each security under consideration, communicating directly with the management teams of the companies issuing the securities and working together to identify those securities that best meet our investment criteria for our family of funds. Our risk management approach begins with each and every security, as we strive to carefully understand the potential opportunity, while considering any and all risk factors.

Today, as investors, we have many options. It is our view that active management can serve shareholders well, not only when markets are thriving, but also during periods of market stress.

As you consider your long-term investment goals, we encourage you to work with your financial professional to develop an investment plan that paves the way for you to pursue both your short-term and long-term goals.

We remain confident that the current crisis, like others in human history, will pass, and we greatly appreciate the trust you have placed in us and look forward to continuing to serve you in the future.

Sincerely,

Lisa M. Jones
Head of the Americas, President and CEO of US
Amundi Asset Management US, Inc.
May 2021

Any information in this shareowner report regarding market or economic trends or the factors influencing the Trust’s historical or future performance are statements of opinion as of the date of this report. Past performance is no guarantee of future results.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 3

Portfolio Management Discussion | 3/31/21

Note to Shareholders: On April 21, 2021, Pioneer Municipal High Income Advantage Trust redomiciled from a Delaware statutory trust to a Maryland corporation and was renamed Pioneer Municipal High Income Advantage Fund, Inc. The redomiciling did not result in any change to the investment adviser, investment objective and strategies, portfolio management team, policies and procedures or the members of the Board overseeing the Trust. Please see Note 7 – Subsequent Events, for more information regarding the redomiciling.

During the 12-month period ended March 31, 2021, the municipal bond market continued its steady recovery from the disruptions and volatility that had beset global financial markets with the onset of the COVID-19 pandemic and the resulting economic downturn back in the spring of 2020. In the following interview, Jonathan Chirunga and David Eurkus discuss the factors that influenced the performance of Pioneer Municipal High Income Advantage Trust during the 12-month period. Mr. Chirunga, Managing Director, Director of High-Yield Municipals, and a portfolio manager at Amundi Asset Management US, Inc. (Amundi US), is responsible for the day-to-day management of the Trust, along with Mr. Eurkus, Managing Director, Director of Municipals, and a portfolio manager at Amundi US.

Q    How did Pioneer Municipal High Income Advantage Trust perform during the 12-month period ended March 31, 2021?

A    Pioneer Municipal High Income Advantage Trust returned 8.60% at net asset value (NAV) and 22.05% at market price during the 12-month period ended March 31, 2021. During the same 12-month period, the Trust’s benchmarks, the Bloomberg Barclays US Municipal High Yield Bond Index and the Bloomberg Barclays Municipal Bond Index, returned 15.02% and 5.51% at NAV, respectively. The Bloomberg Barclays US Municipal High Yield Bond Index is an unmanaged measure of the performance of lower-rated municipal bonds, while the Bloomberg Barclays Municipal Bond Index is an unmanaged measure of the performance of investment-grade municipal bonds. Unlike the Trust, the two indices do not use leverage. While use of leverage increases investment opportunity, it also increases investment risk.

During the same 12-month period, the average return at NAV of the 18 closed-end funds in Morningstar’s Closed-End High Yield Municipal category (which may or may not be leveraged) was 12.75%, and the average return at market price of the closed-end funds within the same Morningstar category was 16.67%.

4 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

The shares of the Trust were selling at a 2.8% discount to NAV on March 31, 2021. Comparatively, the shares of the Trust were selling at a 13.5% discount to NAV on March 31, 2020.

On March 31, 2021, the standardized 30-day SEC yield of the Trust’s shares was 2.23%*.

Q    How would you describe the investment environment in the municipal bond market during the 12-month period ended March 31, 2021?

A    For the overall period, the investment environment for municipal bonds was largely favorable, driven in part by the accommodative stance on monetary policy by the US Federal Reserve System (Fed), healthy demand for tax-free bonds, with limited supply, and the continued longer-term effects on the municipal market from the federal tax overhaul legislation passed in late-2017, which contributed to a decrease in the aforementioned municipal supply. The 2017 tax legislation included key provisions that led to the significant reduction in the issuance of advance-refunding bonds, and placed limits on state and local tax deductions. (An advance-refunding bond is issued to retire, or pre-refund, another outstanding bond more than 90 days in advance of the original bond’s maturity date.)

Like most financial markets, the tax-exempt market had come under significant stress created by the onset of the COVID-19 pandemic in the first quarter of 2020, as virus-mitigation efforts put into place by state and local governments caused many segments of the US economy to shut down and drove unemployment rates into territory rarely seen in recent decades. To combat the very serious economic effects from COVID-19 on individuals, states, municipalities, and the United States overall, the Fed as well as Congress and the Trump administration undertook a large number of monetary and fiscal measures. In early 2020, the Fed reduced the target range of the federal funds rate to near zero, reintroduced lending facilities from the 2008 financial crisis era, instituted new lending facilities, and re-started quantitative easing (that is, injecting massive liquidity into the economy by purchasing Treasury, agency, mortgage, and corporate bonds in significant quantities). In addition, US lawmakers approved two large fiscal aid packages during the spring and early summer of 2020, in the form of loans and grants to individuals, small businesses, medical systems, and higher education institutions, in light of

*    The 30-day SEC yield is a standardized formula that is based on the hypothetical annualized earning power (investment income only) of the Trust’s portfolio securities during the period indicated.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 5

the sudden freeze-up in economic activity and continuously rising unemployment. Taken together, those measures helped to calm financial markets, including the municipal bond market, heading into the Trust’s annual reporting period beginning on April 1, 2020.

Over the 12-month period, the tax-exempt bond market gradually recovered, as domestic and global investors became aggressive purchasers of these bonds, and earlier yield increases reversed themselves as municipal bond prices rose. At the same time, the stunning contraction in economic activity across the country due to COVID-19 containment measures – especially within the tourism, transportation, retail, and service industries – as well as dramatic reductions in federal, state, and local tax revenues, continued to overshadow the municipal bond market. In September and October of 2020, amid robust demand from buyers, the market saw a rush of tax-exempt and taxable municipal issuance in advance of the November US presidential election. Near the end of the calendar year, the conclusion of the presidential and Congressional elections and investor optimism regarding the direction of the US economy in the wake of rollouts of the first approved COVID-19 vaccines helped to reinforce a strong technical (supply/demand) environment for investing in longer-term municipal bonds. Lastly, toward the end of the 12-month period, early in 2021, municipal investors began focusing on the ongoing COVID-19 vaccination efforts, the $1.9 trillion stimulus package passed by US lawmakers during the first quarter of 2021, and the continued, albeit gradual, reopening of the US economy.

Throughout the 12-month period, high-yield municipal bonds received support from strong demand not only from traditional municipal investors, but also from non-traditional investors and foreign purchasers in search of relative safety, lower default rates, and attractive tax-equivalent yields as compared with taxable investments.

Q   What factors affected the Trust’s performance relative to the Bloomberg Barclays municipal bond indices during the 12-month period ended March 31, 2021?

A   We maintained a well-diversified** portfolio during the 12-month period, with exposures to both investment-grade and high-yield municipal bonds.

A key detractor from the Trust’s performance relative to the overall high-yield municipal market during the 12-month period was a continued portfolio underweight to Puerto Rico. The Trust’s allocation to Puerto

**   Diversification does not assure a profit nor protect against loss.

6 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

Rico’s debt has remained at less than 3% of the total investment portfolio, compared to an approximately 13% weighting in the Bloomberg Barclays US High Yield Municipal Index. The Commonwealth’s bonds have been benefiting from increased investor demand for high-yield municipal bonds. Due to the volume of bonds issued by Puerto Rico, they have managed to retain liquidity. That said, we anticipate keeping the Trust’s portfolio underweight to Puerto Rico, as we have had ongoing concerns about its debt, given the effects the COVID-19 pandemic has had on international tourism, an industry upon which the Commonwealth’s economy has been heavily reliant.

The top-performing municipal bond issues for the Trust relative to the benchmarks during the period were two series of Tarrant County (Texas) Continuing Care Retirement Facility bonds, which were pre-refunded by the issuer at a premium price. Holdings in California tobacco settlement bonds and New Hampshire hospital bonds also contributed positively to the Trust’s relative results.

Conversely, the Trust’s position in Two Rivers (Montana) Correctional Facility bonds detracted from relative performance, as the issuer defaulted on its payments after Montana’s newly-elected governor refused to approve the previously agreed-upon construction of a statewide rehabilitation facility. Holdings in Carmel (Indiana) Continuing Care Retirement Facility bonds also weighed on the Trust’s relative returns over the 12-month period.

Q   Did the Trust’s distributions*** to shareholders change significantly during the 12-month period ended March 31, 2021?

A    The Trust’s monthly distributions increased three times during the 12-month period, beginning at $0.0375 per share in April 2020 and peaking at $0.0525 per share in November. The distribution then remained unchanged, at $0.0525 per share/per month, for the rest of the Trust’s fiscal year ended March 31, 2021.

Q   Did the level of leverage in the Trust change during the 12-month period ended March 31, 2021?

A    At the end of the 12-month period on March 31, 2021, 38.2% of the Trust’s total managed assets were financed by leverage obtained through the issuance of preferred shares, compared with 36.3% of the Trust’s total managed assets financed by leverage at the start of the period on April 1, 2020. During the 12-month period, the Trust increased the absolute amount of funds borrowed by a total of $20 million, to $180

*** Distributions are not guaranteed.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 7

million as of March 31, 2021. The percentage of the Trust’s total managed assets financed by leverage increased during the 12-month period due to an increase in the amount of funds borrowed by the Trust.

Q   Did the Trust have any exposure to derivative securities during the 12-month period ended March 31, 2021?

A   No, the Trust’s portfolio had no derivatives exposure during the 12-month period.

Q   What is your investment outlook?

A    Because of an apparent lack of a sustained resurgence in US inflation, as well as the frequently repeated pronouncements from the Fed that it will continue to hold the federal funds target range at or near zero for the next several years, we are optimistic regarding the path of interest rates going forward. Additionally, in light of the continued low default rate for the municipal bond asset class and a favorable supply/demand environment, given continually shrinking supply and persistently strong demand from various categories of investors, we believe that the prospects for the tax-exempt bond market are favorable.

Also, if the recently proposed, major federal infrastructure initiative is eventually passed into law by Congress, we believe we might see an increased number of attractive tax-exempt investment opportunities arise from the variety of new construction projects that could be created by the legislation. Lastly, given the enormous and continuing need for federal economic assistance of all sorts in order to cope with the ongoing economic effects of COVID-19, the US government may be forced to deal with its rising debt levels in part by raising taxes on corporations and high-income individuals, which may further increase demand for municipal bonds. In fact, both capital gains and other tax increases had already been proposed by the Biden administration prior to the end of the 12-month period.

With regard to the Trust’s positioning, we have continued to see investment opportunities created by large investors having to sell strong credit bonds out of their portfolios to meet liquidity needs and redemption requests.

Consistent with our investment discipline in managing the Trust’s portfolio, we intend to continue to focus on intensive, fundamental research into individual bond issues, while maintaining a close watch on any economic factors that could influence the high-yield and investment-grade municipal markets. Based on those factors, we do not anticipate making any significant changes to the portfolio’s positioning and structure in the near future.

8 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

Please refer to the Schedule of Investments on pages 14–23 for a full listing of Trust securities.

All investments are subject to risk, including the possible loss of principal. In the past several years, financial markets have experienced increased volatility and heightened uncertainty. The market prices of securities may go up or down, sometimes rapidly or unpredictably, due to general market conditions, such as real or perceived adverse economic, political, or regulatory conditions, recessions, inflation, changes in interest or currency rates, lack of liquidity in the bond markets, the spread of infectious illness or other public health issues or adverse investor sentiment. These conditions may continue, recur, worsen or spread.

Investments in high-yield or lower-rated securities are subject to greater-than-average risk.

The Trust may invest in securities of issuers that are in default or that are in bankruptcy.

A portion of income may be subject to state, federal, and/or alternative minimum tax. Capital gains, if any, are subject to a capital gains tax.

When interest rates rise, the prices of fixed-income securities held by the Trust will generally fall. Conversely, when interest rates fall, the prices of fixed-income securities held by the Trust will generally rise.

By concentrating in municipal securities, the portfolio is more susceptible to adverse economic, political or regulatory developments than is a portfolio that invests more broadly.

Investments in the Trust are subject to possible loss due to the financial failure of the issuers of the underlying securities and the issuers’ inability to meet their debt obligations.

The Trust currently uses leverage through the issuance of preferred shares. Leverage creates significant risks, including the risk that the Trust’s incremental income or capital appreciation for investments purchased with the proceeds of leverage will not be sufficient to cover the cost of leverage, which may adversely affect the return for the holders of common shares.

The Trust is required to meet certain regulatory and rating agency asset coverage requirements in connection with its outstanding preferred shares. In order to maintain required asset coverage levels, the Trust may be required to alter the composition of its investment portfolio or take other actions, such as redeeming preferred shares with the proceeds from portfolio transactions, at what might be inopportune times in the market. Such actions could reduce the net earnings or returns to holders of the Trust’s common shares over time, which is likely to result in a decrease in the market value of the Trust’s shares.

These risks may increase share price volatility.

Any information in this shareowner report regarding market or economic trends or the factors influencing the Trust’s historical or future performance are statements of opinion as of the date of this report. Past performance is no guarantee of future results.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 9

Portfolio Summary | 3/31/21

10 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

10 Largest Holdings 

(As a percentage of total investments)* 

1.	New Jersey Transportation Trust Fund Authority, 12/15/27
	(BHAC-CR MBIA Insured)	3.10%
2.	Massachusetts Development Finance Agency, WGBH Foundation,
	Series A, 5.75%, 1/1/42 (AMBAC Insured)	2.67
3.	Private Colleges & Universities Authority, Emory University,
	Series A, 5.0%, 10/1/43	2.06
4.	California County Tobacco Securitization Agency, Capital Appreciation,
	Stanislaus County, Subordinated, Series A, 6/1/46	1.94
5.	New York State Dormitory Authority, Series A, 4.0%, 7/1/37	1.89
6.	New York State Dormitory Authority, Series C, 5.0%, 3/15/39	1.80
7.	State of Florida, Capital Outlay, Series A, 4.0%, 6/1/38	1.75
8.	New Jersey Economic Development Authority, Continental Airlines,
	5.75%, 9/15/27	1.67
9.	State of Connecticut, Series E, 4.0%, 9/1/30	1.66
10.	University of Texas System, Financing System, Series A, 5.0%, 8/15/49	1.63

*      Excludes temporary cash investments and all derivative contracts except for options purchased. The Trust is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any securities.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 11

Prices and Distributions | 3/31/21

Share Prices and Distributions

Market Value per Common Share^

	3/31/21	3/31/20
Market Value	$11.82	$10.18
Discount	(2.8)%	(13.5)%

Net Asset Value per Common Share^
	3/31/21	3/31/20
Net Asset Value	$12.16	$11.77

Distributions per Common Share*: 4/1/20–3/31/21

Net
Investment	Short-Term	Long-Term
Income	Capital Gains	Capital Gains
$0.5625	$ —	$ —

Yields
	3/31/21	3/31/20
30-Day SEC Yield	2.23%	3.16%

The data shown above represents past performance, which is no guarantee of future results.

^
Net asset value and market value are published in Barron’s on Saturday, The Wall Street Journal on Monday and The New York Times on Monday and Saturday. Net asset value and market value are published daily on the Trust’s website at www.amundi.com/us.

* The amount of distributions made to shareowners during the period was in excess of the net investment income earned by the Trust during the period.

12 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

Performance Update | 3/31/21

Investment Returns

The mountain chart on the right shows the change in market value, including reinvestment of dividends and distributions, of a $10,000 investment made in common shares of Pioneer Municipal High Income Advantage Trust during the periods shown, compared to that of the Bloomberg Barclays Municipal Bond Index and the Bloomberg Barclays U.S. Municipal High Yield Bond Index.

Average Annual Total Returns
(As of March 31, 2021)
				Bloomberg
			Bloomberg	Barclays
	Net		Barclays	U.S.
	Asset		Municipal	Municipal
	Value	Market	Bond	High Yield
Period	(NAV)	Price	Index	Bond Index
10 years	7.55%	6.27%	4.54%	7.12%
5 years	4.71	2.05	3.49	6.43
1 year	8.60	22.05	5.51	15.02

Call 1-800-225-6292 or visit www.amundi.com/us for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted.

Performance data shown represents past performance. Past performance is no guarantee of future results. Investment return and market price will fluctuate, and your shares may trade below NAV due to such factors as interest rate changes and the perceived credit quality of borrowers.

Total investment return does not reflect broker sales charges or commissions. All performance is for common shares of the Trust.

Shares of closed-end funds, unlike open-end funds, are not continuously offered. There is a one-time public offering and, once issued, shares of closed-end funds are bought and sold in the open market through a stock exchange, and frequently trade at prices lower than their NAV. NAV per common share is total assets less total liabilities, which include preferred shares, divided by the number of common shares outstanding.

When NAV is lower than market price, dividends are assumed to be reinvested at the greater of NAV or 95% of the market price. When NAV is higher, dividends are assumed to be reinvested at prices obtained through open-market purchases under the Trust’s dividend reinvestment plan.

The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Trust distributions or the sale of Trust shares. Had these fees and taxes been reflected, performance would have been lower.

The Bloomberg Barclays Municipal Bond Index is an unmanaged, broad measure of the municipal bond market. The Bloomberg Barclays U.S. Municipal High Yield Bond Index is unmanaged, totals over $26 billion in market value and maintains over 1,300 securities. Municipal bonds in this index have the following requirements: maturities of one year or greater, sub investment grade (below Baa or non-rated), fixed coupon rate, issue date later than 12/31/90, deal size over $20 million, maturity size of at least $3 million. Index returns are calculated monthly, assume reinvestment of dividends and, unlike Trust returns, do not reflect any fees, expenses or sales charges. The indices do not employ leverage. You cannot invest directly in the indices.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 13

Schedule of Investments | 3/31/21

Principal
Amount
USD ($)		Value
	MUNICIPAL BONDS — 160.5% of Net
	Assets(a)
	Alabama — 0.9%
2,500,000	Alabama Industrial Development Authority, Pine
	City Fiber Co., 6.45%, 12/1/23	$ 2,507,175
	Total Alabama	$ 2,507,175
	Arizona — 2.4%
4,000,000(b)	City of Phoenix, 5.0%, 7/1/27	$ 4,860,440
1,980,000	City of Phoenix, Industrial Development Authority,
	3rd & Indian School Assisted Living Project,
	5.4%, 10/1/36	2,041,459
27,000	County of Pima, Industrial Development Authority,
	Arizona Charter Schools Project, Series C, 6.75%, 7/1/31	27,474
	Total Arizona	$ 6,929,373
	Arkansas — 0.9%
2,500,000	Arkansas Development Finance Authority, Big River
	Steel Project, 4.5%, 9/1/49 (144A)	$ 2,726,325
	Total Arkansas	$ 2,726,325
	California — 9.2%
38,610,000(c)	California County Tobacco Securitization Agency,
	Capital Appreciation, Stanislaus County, Subordinated,
	Series A, 6/1/46	$ 9,038,215
1,845,000	California Educational Facilities Authority, Stanford
	University, 5.25%, 4/1/40	2,807,352
2,000,000	California Educational Facilities Authority, Stanford
	University, Series U-7, 5.0%, 6/1/46	3,013,660
1,550,000	California Enterprise Development Authority,
	Sunpower Corp., 8.5%, 4/1/31	1,564,957
2,905,000(d)	California School Finance Authority, Classical
	Academies Project, Series A, 7.375%, 10/1/43	3,201,397
1,875,000	California Statewide Communities Development
	Authority, Lancer Plaza Project, 5.875%, 11/1/43	1,914,525
1,500,000	City of Oroville, Oroville Hospital, 5.25%, 4/1/54	1,693,830
2,695,000(b)	Coast Community College District, Election, Series D,
	5.0%, 8/1/31	3,373,116
	Total California	$ 26,607,052
	Colorado — 1.9%
1,500,000(d)	Colorado Educational & Cultural Facilities Authority,
	Rocky Mountain Classical Academy Project, 8.0%, 9/1/43	$ 1,768,260
500,000	Colorado Health Facilities Authority, 4.0%, 8/1/37	562,100
1,000,000	Colorado Health Facilities Authority, 4.0%, 8/1/39	1,119,380
1,000,000	Colorado Health Facilities Authority, 4.0%, 8/1/44	1,108,710
1,000,000	Colorado Health Facilities Authority, 4.0%, 8/1/49	1,104,130
	Total Colorado	$ 5,662,580

The accompanying notes are an integral part of these financial statements.

14 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

Principal
Amount
USD ($)		Value
	Connecticut — 3.4%
2,035,000	Mohegan Tribal Finance Authority, 7.0%, 2/1/45 (144A)	$ 2,075,863
7,200,000(b)	State of Connecticut, Series E, 4.0%, 9/1/30	7,757,280
	Total Connecticut	$ 9,833,143
	District of Columbia — 2.9%
1,285,000	District of Columbia Tobacco Settlement Financing
	Corp., Asset-Backed, 6.5%, 5/15/33	$ 1,405,854
6,825,000	District of Columbia Tobacco Settlement Financing
	Corp., Asset-Backed, 6.75%, 5/15/40	6,988,118
	Total District of Columbia	$ 8,393,972
	Florida — 6.7%
5,000,000	County of Miami-Dade, Water & Sewer System
	Revenue, Series A, 4.0%, 10/1/44	$ 5,667,550
5,000,000	Florida’s Turnpike Enterprise, Department of
	Transportation, Series A, 4.0%, 7/1/32	5,530,001
7,035,000(b)	State of Florida, Capital Outlay, Series A, 4.0%, 6/1/38	8,140,691
	Total Florida	$ 19,338,242
	Georgia — 7.8%
6,000,000	Brookhaven Development Authority, 4.0%, 7/1/49	$ 6,892,680
5,000,000	City of Atlanta, Water & Wastewater Revenue,
	Series A, 5.0%, 11/1/34	6,251,050
8,750,000	Private Colleges & Universities Authority, Emory
	University, Series A, 5.0%, 10/1/43	9,599,100
	Total Georgia	$ 22,742,830
	Idaho — 0.7%
2,000,000	Power County Industrial Development Corp.,
	FMC Corp. Project, 6.45%, 8/1/32	$ 2,013,060
	Total Idaho	$ 2,013,060
	Illinois — 1.2%
1,000,000(b)	Chicago Board of Education, Series A, 7.0%,
	12/1/46 (144A)	$ 1,265,870
140,903(c)	Illinois Finance Authority, 11/15/52	11,015
223,202(e)	Illinois Finance Authority, 4.0%, 11/15/52	226,907
1,000,000	Metropolitan Pier & Exposition Authority, McCormick
	Place, Series B, 5.0%, 6/15/52 (ST APPROP Insured)	1,034,090
1,015,000	Southwestern Illinois Development Authority, Village of
	Sauget Project, 5.625%, 11/1/26	964,270
	Total Illinois	$ 3,502,152
	Indiana — 0.4%
1,000,000	Indiana Finance Authority, Educational Facilities,
	5.125%, 7/1/37	$ 1,097,190
	Total Indiana	$ 1,097,190

The accompanying notes are an integral part of these financial statements.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 15

Schedule of Investments | 3/31/21 (continued)

Principal
Amount
USD ($)		Value
	Louisiana — 2.6%
7,000,000(d)	Jefferson Parish Hospital Service District No. 2, East
	Jefferson General Hospital, 6.375%, 7/1/41	$ 7,099,050
470,000	Opelousas Louisiana General Hospital Authority,
	Opelousas General Health System Project,
	5.75%, 10/1/23	471,574
	Total Louisiana	$ 7,570,624
	Maine — 1.8%
1,500,000(d)	Maine Health & Higher Educational Facilities Authority,
	Maine General Medical Center, 7.5%, 7/1/32	$ 1,527,735
3,500,000	Maine Turnpike Authority, Series A, 5.0%, 7/1/42	3,657,605
	Total Maine	$ 5,185,340
	Maryland — 4.5%
2,035,000	Maryland Health & Higher Educational Facilities
	Authority, City Neighbors, Series A, 6.75%, 7/1/44	$ 2,192,265
4,500,000(d)	Maryland Health & Higher Educational Facilities
	Authority, Maryland University Medical System,
	Series A, 5.0%, 7/1/43	4,765,365
5,160,000	University System of Maryland, 4.0%, 4/1/42	6,156,447
	Total Maryland	$ 13,114,077
	Massachusetts — 14.6%
1,490,000(b)	City of Boston, Series A, 5.0%, 3/1/39	$ 1,865,912
1,000,000(b)	Commonwealth of Massachusetts, 3.0%, 3/1/49	1,051,940
7,000,000(c)	Massachusetts Bay Transportation Authority,
	Series A, 7/1/28	6,177,220
2,575,000(d)	Massachusetts Development Finance Agency,
	Broad Institute, Inc., Series A, 5.25%, 4/1/37	2,575,000
2,200,000(d)	Massachusetts Development Finance Agency, Partner’s
	Healthcare System, Series M-4, 5.0%, 7/1/39	2,433,684
4,000,000	Massachusetts Development Finance Agency, Partner’s
	Healthcare System, Series S-1, 4.0%, 7/1/41	4,615,320
8,000,000	Massachusetts Development Finance Agency, WGBH
	Foundation, Series A, 5.75%, 1/1/42 (AMBAC Insured)	12,463,440
4,325,000	Massachusetts Health & Educational Facilities Authority,
	Massachusetts Institute of Technology, Series K,
	5.5%, 7/1/32	6,337,293
2,790,000(b)	Town of Arlington MA, 2.0%, 9/15/40	2,809,056
2,160,000(b)	Town of Rockland MA, 2.2%, 8/1/50	2,047,269
	Total Massachusetts	$ 42,376,134
	Michigan — 2.7%
2,000,000	David Ellis Academy-West, 5.25%, 6/1/45	$ 2,078,100
395,000	Michigan Public Educational Facilities Authority,
	Crescent Academy, 7.0%, 10/1/36	397,666
5,000,000	Michigan State University, Series A, 5.0%, 8/15/41	5,436,050
	Total Michigan	$ 7,911,816

The accompanying notes are an integral part of these financial statements.

16 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

Principal
Amount
USD ($)		Value
	Minnesota — 2.1%
1,890,000	Bloomington Port Authority, Radisson Blu Mall
	of America, 9.0%, 12/1/35	$ 1,890,019
1,000,000	City of Ham Lake, DaVinci Academy, Series A,
	5.0%, 7/1/47	1,013,530
1,740,000	City of Rochester, Health Care Facilities, Mayo Clinic,
	4.0%, 11/15/48	1,988,176
1,000,000(b)	State of Minnesota, Series B, 4.0%, 8/1/27	1,171,440
	Total Minnesota	$ 6,063,165
	Montana — 0.2%
2,445,000(f)	City of Hardin, Tax Allocation, Rocky Mountain
	Power, Inc., Project, 6.25%, 9/1/31	$ 537,900
1,000,000(f)	Two Rivers Authority, Inc., 7.375%, 11/1/27	76,600
	Total Montana	$ 614,500
	New Hampshire — 1.0%
1,000,000	New Hampshire Health & Education Facilities
	Authority Act, 5.0%, 8/1/59	$ 1,516,730
1,375,000	New Hampshire Health & Education Facilities
	Authority Act, Catholic Medical Centre, 3.75%, 7/1/40	1,499,410
	Total New Hampshire	$ 3,016,140
	New Jersey — 10.2%
7,500,000	New Jersey Economic Development Authority,
	Continental Airlines, 5.75%, 9/15/27	$ 7,797,162
1,000,000	New Jersey Economic Development Authority,
	Marion P. Thomas Charter School, Inc., Project,
	5.375%, 10/1/50 (144A)	1,089,170
3,500,000(e)	New Jersey State Turnpike Authority, RIB, 0.0%, 1/1/28
	(144A) (AGM Insured)	6,285,300
15,375,000(c)	New Jersey Transportation Trust Fund Authority,
	12/15/27 (BHAC-CR MBIA Insured)	14,468,336
	Total New Jersey	$ 29,639,968
	New York — 17.2%
3,000,000	Metropolitan Transportation Authority, 4.0%, 11/15/45	$ 3,352,380
5,000,000	Metropolitan Transportation Authority, 4.0%, 11/15/48	5,573,800
2,250,000	Metropolitan Transportation Authority, 5.0%, 11/15/32	2,869,110
2,000,000	Metropolitan Transportation Authority, 5.25%, 11/15/55	2,489,880
1,325,000	New York City Transitional Finance Authority Future
	Tax Secured Revenue, 4.0%, 11/1/34	1,578,963
2,500,000	New York State Dormitory Authority, 3.0%, 3/15/41	2,611,625
5,000,000	New York State Dormitory Authority, Columbia
	University, 5.0%, 10/1/41	5,002,700
2,885,000	New York State Dormitory Authority, Group 3, Series A,
	5.0%, 3/15/41	3,555,907
7,500,000	New York State Dormitory Authority, Series A,
	4.0%, 7/1/37	8,804,025

The accompanying notes are an integral part of these financial statements.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 17

Schedule of Investments | 3/31/21 (continued)

Principal
Amount
USD ($)		Value
	New York — (continued)
7,500,000	New York State Dormitory Authority, Series C,
	5.0%, 3/15/39	$ 8,384,550
1,500,000	New York State Dormitory Authority, Trustees of
	Columbia University, 5.0%, 10/1/45	2,299,365
2,000,000	New York State Urban Development Corp.,
	3.0%, 3/15/49	2,052,320
1,256,828	Westchester County Healthcare Corp., Series A,
	5.0%, 11/1/44	1,329,460
	Total New York	$ 49,904,085
	North Carolina — 2.1%
500,000	City of Charlotte NC Water & Sewer System Revenue,
	2.0%, 7/1/41	$ 502,380
1,000,000	City of Charlotte NC Water & Sewer System Revenue,
	2.0%, 7/1/42	1,002,740
500,000	City of Charlotte, Airport Revenue, Series A,
	5.0%, 7/1/42	576,425
1,250,000	City of Charlotte, Airport Revenue, Series A,
	5.0%, 7/1/47	1,448,212
2,500,000(b)	County of Mecklenburg NC, 2.0%, 3/1/41	2,499,775
	Total North Carolina	$ 6,029,532
	Ohio — 3.1%
3,000,000(d)	Akron Bath Copley Joint Township Hospital District,
	Akron General Health System, 5.0%, 1/1/31	$ 3,100,170
2,000,000	Buckeye Tobacco Settlement Financing Authority,
	4.0%, 6/1/48	2,218,360
1,000,000	Buckeye Tobacco Settlement Financing Authority,
	5.0%, 6/1/55	1,125,000
2,500,000(b)(d)	State of Ohio, Common Schools, Series B,
	5.0%, 6/15/29	2,645,250
	Total Ohio	$ 9,088,780
	Oregon — 0.4%
1,000,000	Oregon Health & Science University, Series A,
	5.0%, 7/1/42	$ 1,199,650
	Total Oregon	$ 1,199,650
	Pennsylvania — 6.3%
1,000,000	Chester County Industrial Development Authority,
	Collegium Charter School, Series A, 5.25%, 10/15/47	$ 1,104,570
1,965,000	Pennsylvania Economic Development Financing
	Authority, US Airways Group, Series B, 8.0%, 5/1/29	1,974,275
2,000,000	Pennsylvania Housing Finance Agency, 2.05%, 4/1/41	1,997,100
3,500,000	Pennsylvania Turnpike Commission, 5.25%, 12/1/44	4,463,270
500,000	Philadelphia Authority for Industrial Development,
	5.5%, 6/1/49 (144A)	529,890

The accompanying notes are an integral part of these financial statements.

18 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

Principal
Amount
USD ($)		Value
	Pennsylvania — (continued)
1,000,000	Philadelphia Authority for Industrial Development,
	Global Leadership Academy Charter School Project,
	5.0%, 11/15/50	$ 1,009,150
470,000	Philadelphia Authority for Industrial Development,
	Greater Philadelphia Health Action, Inc., Project,
	Series A, 6.625%, 6/1/50	500,475
6,000,000(d)	Philadelphia Authority for Industrial Development,
	Nueva Esperanze, Inc., 8.2%, 12/1/43	6,805,560
	Total Pennsylvania	$ 18,384,290
	Puerto Rico — 3.8%
6,500,000(b)(f)	Commonwealth of Puerto Rico, 8.0%, 7/1/35	$ 5,110,625
2,500,000	Puerto Rico Sales Tax Financing Corp. Sales Tax
	Revenue, 5.0%, 7/1/58	2,752,950
3,000,000	PUERTO RICO S.A.LES TAX FING COR REGD B/E,
	4.784%, 7/1/58	3,249,300
	Total Puerto Rico	$ 11,112,875
	Rhode Island — 1.3%
1,355,000(f)	Central Falls Detention Facility Corp., 7.25%, 7/15/35	$ 243,900
3,000,000	Rhode Island Health & Educational Building Corp.,
	Brown University, Series A, 4.0%, 9/1/37	3,468,900
	Total Rhode Island	$ 3,712,800
	South Carolina — 2.1%
4,400,000(g)	Tobacco Settlement Revenue Management Authority,
	Series B, 6.375%, 5/15/30	$ 6,150,716
	Total South Carolina	$ 6,150,716
	South Dakota — 1.5%
4,000,000	South Dakota Health & Educational Facilities Authority,
	Sanford Health, Series B, 4.0%, 11/1/44	$ 4,280,040
	Total South Dakota	$ 4,280,040
	Texas — 19.6%
500,000	Arlington Higher Education Finance Corp., 5.45%,
	3/1/49 (144A)	$ 548,625
1,000,000	Arlington Higher Education Finance Corp., Universal
	Academy, Series A, 7.0%, 3/1/34	1,104,890
1,500,000	Arlington Higher Education Finance Corp., Universal
	Academy, Series A, 7.125%, 3/1/44	1,662,495
1,250,000	City of Houston TX Combined Utility System Revenue,
	4.0%, 11/15/35	1,509,213
2,500,000(b)	County of Harris, Series A, 5.0%, 10/1/26	2,991,375
5,000,000(b)(d)	Goose Creek Consolidated Independent School
	District, Series C, 4.0%, 2/15/26 (PSF-GTD Insured)	5,519,100
5,020,000(d)	Grand Parkway Transportation Corp., Series A,
	5.5%, 4/1/53	5,682,891
5,000,000(e)	Greater Texas Cultural Education Facilities Finance
	Corp., 9.0%, 2/1/50 (144A)	5,203,100

The accompanying notes are an integral part of these financial statements.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 19

Schedule of Investments | 3/31/21 (continued)

Principal
Amount
USD ($)		Value
	Texas — (continued)
3,000,000(d)	Houston Higher Education Finance Corp., St. John’s
	School Project, Series A, 5.0%, 9/1/38	$ 3,191,730
3,355,000	North Texas Tollway Authority, Series A, 5.0%, 1/1/30	3,868,952
1,500,000(d)	Red River Health Facilities Development Corp., MRC
	Crestview, Series A, 8.0%, 11/15/41	1,569,180
2,000,000(b)(d)	Richardson Independent School District, School Building,
	5.0%, 2/15/38 (PSF-GTD Insured)	2,168,720
6,960,000(f)	Sanger Industrial Development Corp., Texas Pellets
	Project, Series B, 8.0%, 7/1/38	1,713,900
1,000,000(f)	Texas Midwest Public Facility Corp., Secure Treatment
	Facility Project, 9.0%, 10/1/30	600,000
350,000	Texas Municipal Gas Acquisition & Supply Corp. III,
	5.0%, 12/15/32	462,837
3,365,000	Texas Private Activity Bond Surface Transportation
	Corp., NTE Mobility Partners LLC, 7.0%, 12/31/38	3,729,934
990,082	Texas Department of Housing & Community Affairs,
	2.3%, 7/1/37 (FNMA HUD SECT 8 Insured)	1,001,038
1,165,000	Texas Water Development Board, 4.0%, 10/15/44	1,373,838
5,000,000(b)(d)	Tyler Independent School District, School Building, 5.0%,
	2/15/38 (PSF-GTD Insured)	5,420,100
5,000,000	University of Texas System, Financing System, Series A,
	5.0%, 8/15/49	7,581,700
	Total Texas	$ 56,903,618
	Utah — 2.2%
5,000,000	County of Utah, IHC Health Services, Inc., Series B,
	4.0%, 5/15/47	$ 5,324,100
1,000,000	Salt Lake City Corp., Airport Revenue, Series B,
	5.0%, 7/1/36	1,185,010
	Total Utah	$ 6,509,110
	Vermont — 0.7%
2,000,000	Vermont Educational & Health Buildings Financing
	Agency, Green Bond, 4.0%, 12/1/42	$ 2,106,560
	Total Vermont	$ 2,106,560
	Virginia — 12.5%
3,235,000(b)	City of Alexandria VA, 3.0%, 7/15/46 (ST AID
	WITHHLDG Insured)	$ 3,473,549
2,275,000(b)	County of Arlington, 4.0%, 8/15/35	2,588,154
4,000,000(b)	County of Fairfax VA, 2.0%, 10/1/34 (ST AID
	WITHHLDG Insured)	4,158,320
4,550,000	Tobacco Settlement Financing Corp., Series B-1,
	5.0%, 6/1/47	4,539,125
5,000,000	University of Virginia, Multi Year Capital Project,
	Series A, 4.0%, 8/1/48	5,569,700
5,000,000	University of Virginia, Series A, 5.0%, 4/1/42	6,072,200
4,955,000	Virginia College Building Authority, 3.0%, 2/1/36	5,454,266

The accompanying notes are an integral part of these financial statements.

20 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

 

Principal
Amount
USD ($)		Value
	Virginia — (continued)
1,000,000	Virginia Public Building Authority, 4.0%, 8/1/40	$ 1,187,230
3,000,000	Virginia Public School Authority Revenue, 4.0%,
	8/1/25 (ST AID WITHHLDG Insured)	3,345,720
	Total Virginia	$ 36,388,264
	Washington — 6.2%
1,335,000	Central Puget Sound Regional Transit Authority,
	Green Bond, Series S-1, 5.0%, 11/1/46	$ 1,995,104
3,000,000	City of Seattle, Water System Revenue, 4.0%, 8/1/32	3,472,440
2,500,000(b)	King County, Issaquah School District No. 411,
	4.0%, 12/1/31 (SCH BD GTY Insured)	2,850,125
3,435,000(b)	State of Washington, 5.0%, 6/1/41	4,421,910
2,500,000	University of Washington, Series B, 5.0%, 6/1/29	2,946,250
1,000,000	Washington Health Care Facilities Authority,
	4.0%, 8/1/44	1,108,080
1,100,000(d)	Washington State Housing Finance Commission,
	Mirabella Project, Series A, 6.75%, 10/1/47 (144A)	1,132,483
	Total Washington	$ 17,926,392
	Wisconsin — 3.4%
5,000,000	Public Finance Authority, Glenridge Palmer Ranch,
	Series A, 8.25%, 6/1/46 (144A)	$ 5,137,150
750,000	Public Finance Authority, Roseman University Health
	Sciences Project, 5.875%, 4/1/45	781,680
1,000,000	Public Finance Authority, SearStone CCRC Project,
	Series A, 5.3%, 6/1/47	1,002,540
1,470,000(d)	Public Finance Authority, SearStone CCRC Project,
	Series A, 8.625%, 6/1/47	1,601,477
1,220,000	Wisconsin Housing & Economic Development
	Authority, 2.95%, 3/1/42 (FNMA COLL Insured)	1,254,294
	Total Wisconsin	$ 9,777,141
	TOTAL MUNICIPAL BONDS
	(Cost $436,180,377)	$ 466,318,711
	TOTAL INVESTMENTS IN UNAFFILIATED ISSUERS — 160.5%
	(Cost $436,180,377)	$ 466,318,711
	OTHER ASSETS AND LIABILITIES — (60.5)%	$ (175,704,560)
	NET ASSETS APPLICABLE TO COMMON
	SHAREOWNERS — 100.0%	$ 290,614,151

The accompanying notes are an integral part of these financial statements.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 21

Schedule of Investments | 3/31/21 (continued)

AGM	Assured Guaranty Municipal Corp.
AMBAC	Ambac Assurance Corp.
BHAC-CR MBIA	Berkshire Hathaway Assurance Corp.
FNMA COLL	Federal National Mortgage Association Collateral
FNMA HUD SECT 8	Federal National Mortgage Association U.S. Department of Housing and Urban Development Section 8
PSF-GTD	Permanent School Fund Guaranteed
RIB	Residual Interest Bond is purchased in a secondary market. The interest rate is subject to change periodically and inversely based upon prevailing market rates. The interest rate shown is the rate at March 31, 2021
SCH BD GTY	School Board Guaranty
ST AID WITHHLDG	State Aid Withholding
ST APPROP	State Appropriations
(144A)	Security is exempt from registration under Rule 144A of the Securities Act of 1933. Such securities may be resold normally to qualified institutional buyers in a transaction exempt from registration. At March 31, 2021, the value of these securities amounted to $25,993,776, or 8.9% of net assets applicable to common shareowners.

(a)	Consists of Revenue Bonds unless otherwise indicated.
(b)	Represents a General Obligation Bond.
(c)	Security issued with a zero coupon. Income is recognized through accretion of discount.
(d)	Pre-refunded bonds have been collateralized by U.S. Treasury or U.S. Government Agency securities which are held in escrow to pay interest and principal on the tax exempt issue and to retire the bonds in full at the earliest refunding date.
(e)	The interest rate is subject to change periodically. The interest rate and/or reference index and spread shown at March 31, 2021.
(f)	Security is in default.
(g)	Escrow to maturity.

Purchases and sales of securities (excluding temporary cash investments) for the year ended March 31, 2021, aggregated $87,689,964 and $54,556,437, respectively.

The Trust is permitted to engage in purchase and sale transactions (“cross trades”) with certain funds and accounts for which Amundi Asset Management US, Inc. (the “Adviser”) serves as the Trust’s investment adviser, as set forth in Rule 17a-7 under the Investment Company Act of 1940, pursuant to procedures adopted by the Board of Trustees. Under these procedures, cross trades are effected at current market prices. During the year ended March 31, 2021, the Trust did not engage in any cross trade activity.

At March 31, 2021, the net unrealized appreciation on investments based on cost for federal tax purposes of $435,564,127 was as follows:

Aggregate gross unrealized appreciation for all investments in which
there is an excess of value over tax cost	$ 42,624,502
Aggregate gross unrealized depreciation for all investments in which
there is an excess of tax cost over value	(11,869,918)
Net unrealized appreciation	$ 30,754,584

The accompanying notes are an integral part of these financial statements.

22 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

 

Various inputs are used in determining the value of the Trust’s investments. These inputs are summarized in the three broad levels below.

Level 1 – unadjusted quoted prices in active markets for identical securities.

Level 2 – other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risks, etc.). See Notes to Financial Statements — Note 1A.

Level 3 – significant unobservable inputs (including the Trust’s own assumptions in determining fair value of investments). See Notes to Financial Statements — Note 1A.

The following is a summary of the inputs used as of March 31, 2021, in valuing the Trust’s investments:

	Level 1		Level 2			Level 3		Total
Municipal Bonds	$	—	$	466,318,711		$	—	$	466,318,711
Total Investments in Securities	$	—	$	466,318,711		$	—	$	466,318,711
Other Financial Instruments:
Variable Rate MuniFund
Term Preferred Shares(a)	$	—	$	(180,000,000	)	$	—	$	(180,000,000	)
Total Other Financial Instruments	$	—	$	(180,000,000	)	$	—	$	(180,000,000	)

^(a)      The Trust may hold liabilities in which the fair value approximates the carrying amount for financial statement purposes.

The accompanying notes are an integral part of these financial statements.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 23

Statement of Assets and Liabilities | 3/31/21

ASSETS:
Investments in unaffiliated issuers, at value (cost $436,180,377)	$	466,318,711
Receivables —
Interest		5,237,147
Other assets		85,212
Total assets	$	471,641,070
LIABILITIES:
Bank overdraft	$	867,197
Variable Rate MuniFund Term Preferred Shares*		180,000,000
Payables —
Interest expense		78
Trustees’ fees		2,622
Due to affiliates		18,854
Accrued expenses		138,168
Total liabilities	$	181,026,919
NET ASSETS APPLICABLE TO COMMON SHAREOWNERS:
Paid-in capital	$	285,696,996
Distributable earnings		4,917,155
Net assets applicable to common shareowners	$	290,614,151
NET ASSET VALUE PER COMMON SHARE:
No par value
Based on $290,614,151/23,899,020 common shares	$	12.16

* $100,000 liquidation value per share applicable to 1,800 shares 

The accompanying notes are an integral part of these financial statements.

24 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

Statement of Operations 

FOR THE YEAR ENDED 3/31/21 

INVESTMENT INCOME:
Interest from unaffiliated issuers	$	17,812,514
Total investment income			$	17,812,514
EXPENSES:
Management fees	$	2,698,715
Administrative expense		207,055
Transfer agent fees		16,667
Shareowner communications expense		16,733
Custodian fees		6,275
Registration fees		26,573
Professional fees		259,939
Printing expense		16,384
Pricing fees		11,364
Trustees’ fees		20,439
Insurance expense		798
Interest expense		1,846,000
Miscellaneous		134,676
Total expenses			$	5,261,618
Net investment income			$	12,550,896
REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS:
Net realized gain (loss) on:
Investments in unaffiliated issuers			$	816,080
Change in net unrealized appreciation (depreciation) on:
Investments in unaffiliated issuers			$	9,318,368
Net realized and unrealized gain (loss) on investments			$	10,134,448
Net increase in net assets resulting from operations			$	22,685,344

The accompanying notes are an integral part of these financial statements.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 25

Statements of Changes in Net Assets

	Year			Year
	Ended			Ended
	3/31/21			3/31/20
FROM OPERATIONS:
Net investment income (loss)	$	12,550,896		$	11,800,855
Net realized gain (loss) on investments		816,080			463,286
Change in net unrealized appreciation (depreciation)
on investments		9,318,368			860,636
Net increase in net assets resulting from operations	$	22,685,344		$	13,124,777
DISTRIBUTIONS TO COMMON SHAREOWNERS:
($0.56 and $0.46 per share, respectively)	$	(13,443,199	)	$	(10,993,549	)
Total distributions to common shareowners	$	(13,443,199	)	$	(10,993,549	)
Net increase in net assets applicable to
common shareowners	$	9,242,145		$	2,131,228
NET ASSETS APPLICABLE TO
COMMON SHAREOWNERS:
Beginning of year	$	281,372,006		$	279,240,778
End of year	$	290,614,151		$	281,372,006

The accompanying notes are an integral part of these financial statements.

26 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

Statement of Cash Flows 

FOR THE YEAR ENDED 3/31/21 

Cash Flows From Operating Activities:
Net increase in net assets resulting from operations	$	22,685,344
Adjustments to reconcile net decrease in net assets resulting from
operations to net cash, restricted cash and foreign currencies used in
operating activities:
Purchases of investment securities	$	(94,179,728	)
Proceeds from disposition and maturity of investment securities		61,052,510
Change in unrealized appreciation on investments in unaffiliated issuers		(9,318,368	)
Net (accretion) and amortization of discount/premium on investment securities		920,373
Net realized gain on investments		(816,080	)
Decrease in interest receivable		62,250
Decrease in other assets		92,740
Decrease in due to affiliates		(9,240	)
Increase in trustees’ fees payable		2,112
Decrease in accrued administrator fees payable		(32,486	)
Decrease in professional fees payable		(65,774	)
Decrease in interest expense payable		(275,396	)
Increase in accrued expenses payable		119,032
Net cash, restricted cash and foreign currencies used in operating activities	$	(19,762,711	)
Cash Flows Provided by Financing Activities:
Increase in Bank overdraft	$	867,197
Payments on borrowings		20,000,000
Distributions to shareowners		(13,443,199	)
Net cash, restricted cash and foreign currencies provided by financing activities	$	7,423,998
Cash, Restricted Cash and Foreign Currencies:
Beginning of year	$	12,338,713
End of year	$	—
Cash Flow Information:
Cash paid for interest	$	2,121,396

The accompanying notes are an integral part of these financial statements.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 27

Financial Highlights

	Year			Year			Year			Year			Year
	Ended			Ended			Ended			Ended			Ended
	3/31/21			3/31/20			3/31/19			3/31/18			3/31/17*
Per Share Operating Performance
Net asset value, beginning of period	$	11.77		$	11.68		$	11.59		$	11.86		$	12.55
Increase (decrease) from investment operations: (a)
Net investment income (b)	$	0.53		$	0.49		$	0.72		$	0.73		$	0.80
Net realized and unrealized gain (loss) on investments		0.42			0.06			0.16			(0.28	)		(0.68	)
Distributions to preferred shareowners from:
Net investment income (b)	$	—		$	—		$	(0.18	)	$	(0.11	)	$	(0.07	)
Net increase (decrease) from investment operations	$	0.95		$	0.55		$	0.70		$	0.34		$	0.05
Distributions to shareowners from:
Net investment income and previously undistributed net investment income	$	(0.56	)**	$	(0.46	)	$	(0.61	)	$	(0.61	)	$	(0.74	)
Net increase (decrease) in net asset value	$	0.39		$	0.09		$	0.09		$	(0.27	)	$	(0.69	)
Net asset value, end of period	$	12.16		$	11.77		$	11.68		$	11.59		$	11.86
Market value, end of period	$	11.82		$	10.18		$	10.76		$	10.72		$	10.99
Total return at net asset value (c)		8.60	%		5.12	%		6.63	%		3.11	%		0.28	%
Total return at market value (c)		22.05	%		(1.30	)%		6.20	%		2.92	%		(15.92	)%
Ratios to average net assets of shareowners:
Total expenses plus interest expense (d) (e)		1.82	%		2.61	%		1.14	%		1.16	%		1.12	%
Net investment income before preferred share distributions (b)		—	%		—	%		6.28	%		6.15	%		6.47	%
Net investment income (e)		4.33	%		4.14	%		4.69	%		5.18	%		5.94	%
Preferred share distributions (b)		—	%		—	%		1.58	%		0.97	%		0.53	%
Portfolio turnover rate		12	%		11	%		9	%		20	%		9	%
Net assets of common shareowners, end of period (in thousands)	$	290,614		$	281,372		$	279,241		$	277,012		$	283,528

The accompanying notes are an integral part of these financial statements.

28 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

	Year		Year		Year		Year		Year
	Ended		Ended		Ended		Ended		Ended
	3/31/21		3/31/20		3/31/19		3/31/18		3/31/17*
Preferred shares outstanding (in thousands) (f) (g) (h)	$	180,000	$	160,000	$	160,000	$	160,000	$	150,000
Asset coverage per preferred share, end of period	$	261,452	$	276,030	$	274,529	$	273,132	$	72,252
Average market value per preferred share (i)	$	100,000	$	100,000	$	100,000	$	100,000	$	25,000
Liquidation value, including interest expense payable, per preferred share	$	100,000	$	100,172	$	100,004	$	100,000	$	24,998

*	The Trust was audited by an independent registered public accounting firm other than Ernst & Young LLP.
**	The amount of distributions made to shareowners during the period was in excess of the net investment income earned by the Trust during the period. The Trust has accumulated undistributed net investment income which is part of the Trust’s NAV. A portion of this accumulated net investment income was distributed to shareowners during the period. A decrease in distributions may have a negative effect on the market value of the Trust’s shares.
(a)	The per common share data presented above is based upon the average common shares outstanding for the periods presented.
(b)	Beginning March 31, 2020, distribution payments to preferred shareowners are included as a component of net investment income.
(c)	Total investment return is calculated assuming a purchase of common shares at the current net asset value or market value on the first day and a sale at the current net asset value or market value on the last day of the periods reported. Dividends and distributions, if any, are assumed for purposes of this calculation to be reinvested at prices obtained under the Trust’s dividend reinvestment plan. Total investment return does not reflect brokerage commissions. Past performance is not a guarantee of future results.
(d)	Prior to March 31, 2020, the expense ratios do not reflect the effect of distribution payments to preferred shareowners.
(e)	Includes interest expense of 0.64%,1.50%, —%, —% and —%, respectively.
(f)	Prior to February 16, 2018, there were 6,000 Auction Preferred Shares (“APS”) outstanding, with a liquidation preference of $25,000 per share. The Trust redeemed all of its outstanding APS on February 20, 2018.
(g)	The Trust issued 1,600 Variable Rate MuniFund Term Preferred Shares, with a liquidation preference of $100,000 per share, on February 16, 2018.
(h)	The Trust issued 200 Variable Rate MuniFund Term Preferred Shares, with a liquidation preference of $100,000 per share, on February 16, 2021.
(i)	Market value is redemption value without an active market.

The accompanying notes are an integral part of these financial statements.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 29

Notes to Financial Statements | 3/31/21

1. Organization and Significant Accounting Policies

Pioneer Municipal High Income Advantage Trust (the “Trust”) was organized as a Delaware statutory trust on August 6, 2003. Prior to commencing operations on October 20, 2003, the Trust had no operations other than matters relating to its organization and registration as a diversified, closed-end management investment company under the Investment Company Act of 1940, as amended. The investment objective of the Trust is to seek a high level of current income exempt from regular federal income tax, and the Trust may, as a secondary objective, also seek capital appreciation to the extent that it is consistent with its primary investment objective.

Amundi Asset Management US, Inc., an indirect, wholly owned subsidiary of Amundi and Amundi’s wholly owned subsidiary, Amundi USA, Inc., serves as the Trust’s investment adviser (the “Adviser”). Prior to January 1, 2021, the Adviser was named Amundi Pioneer Asset Management, Inc.

In August 2018, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update 2018-13 “Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement” (“ASU 2018-13”) which modifies disclosure requirements for fair value measurements, principally for Level 3 securities and transfers between levels of the fair value hierarchy. ASU 2018-13 is effective for fiscal years beginning after December 15, 2019 and for interim periods within those fiscal years. The Trust has adopted ASU 2018-13 for the year ended March 31, 2021. The impact to the Trust’s adoption was limited to changes in the Trust’s disclosures regarding fair value, primarily those disclosures related to transfers between levels of the fair value hierarchy and disclosure of the range and weighted average used to develop significant unobservable inputs for Level 3 fair value investments, when applicable.

In March 2020, FASB issued an Accounting Standard Update, ASU 2020-04, Reference Rate Reform (Topic 848) — Facilitation of the Effects of Reference Rate Reform on Financial Reporting (“ASU 2020-04”), which provides optional, temporary relief with respect to the financial reporting of contracts subject to certain types of modifications due to the planned discontinuation of the London Interbank Offered Rate (“LIBOR”) and other LIBOR-based reference rates at the end of 2021. The temporary relief provided by ASU 2020-04 is effective for certain reference rate-related contract modifications that occur during the period from March 12, 2020 through December 31, 2022. Management is evaluating the impact of ASU

30 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

2020-04 on the Trust’s investments, derivatives, debt and other contracts, if applicable, that will undergo reference rate-related modifications as a result of the reference rate reform.

The Trust is an investment company and follows investment company accounting and reporting guidance under U.S. Generally Accepted Accounting Principles (“U.S. GAAP”). U.S. GAAP requires the management of the Trust to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income, expenses and gain or loss on investments during the reporting period. Actual results could differ from those estimates.

The following is a summary of significant accounting policies followed by the Trust in the preparation of its financial statements:

A.   Security Valuation

The net asset value of the Trust is computed once daily, on each day the New York Stock Exchange (“NYSE”) is open, as of the close of regular trading on the NYSE.

Fixed-income securities are valued by using prices supplied by independent pricing services, which consider such factors as market prices, market events, quotations from one or more brokers, Treasury spreads, yields, maturities and ratings, or may use a pricing matrix or other fair value methods or techniques to provide an estimated value of the security or instrument. A pricing matrix is a means of valuing a debt security on the basis of current market prices for other debt securities, historical trading patterns in the market for fixed-income securities and/or other factors. Non-U.S. debt securities that are listed on an exchange will be valued at the bid price obtained from an independent third party pricing service. When independent third party pricing services are unable to supply prices, or when prices or market quotations are considered to be unreliable, the value of that security may be determined using quotations from one or more broker-dealers.

Securities for which independent pricing services or broker-dealers are unable to supply prices or for which market prices and/or quotations are not readily available or are considered to be unreliable are valued by a fair valuation team comprised of certain personnel of the Adviser pursuant to procedures adopted by the Trust’s Board of Trustees. The Adviser’s fair valuation team uses fair value methods approved by the Valuation Committee of the Board of Trustees. The Adviser’s fair valuation team is responsible for monitoring developments that may impact fair valued

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 31

securities and for discussing and assessing fair values on an ongoing basis, and at least quarterly, with the Valuation Committee of the Board of Trustees.

Inputs used when applying fair value methods to value a security may include credit ratings, the financial condition of the company, current market conditions and comparable securities. The Trust may use fair value methods if it is determined that a significant event has occurred after the close of the exchange or market on which the security trades and prior to the determination of the Trust’s net asset value. Examples of a significant event might include political or economic news, corporate restructurings, natural disasters, terrorist activity or trading halts. Thus, the valuation of the Trust’s securities may differ significantly from exchange prices, and such differences could be material.

At March 31, 2021, no securities were valued using fair value methods (other than securities valued using prices supplied by independent pricing services, broker-dealers or using a third party insurance industry pricing model).

B.   Investment Income and Transactions

Interest income, including interest on income-bearing cash accounts, is recorded on the accrual basis. Dividend and interest income are reported net of unrecoverable foreign taxes withheld at the applicable country rates and net of income accrued on defaulted securities.

Discounts and premiums on purchase prices of debt securities are accreted or amortized, respectively, daily, into interest income on an effective yield to maturity basis with a corresponding increase or decrease in the cost basis of the security. Premiums and discounts related to certain mortgage-backed securities are amortized or accreted in proportion to the monthly paydowns.

Interest and dividend income payable by delivery of additional shares is reclassified as PIK (payment-in-kind) income upon receipt and is included in interest and dividend income, respectively.

Security transactions are recorded as of trade date. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes.

32 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

C.   Federal Income Taxes

It is the Trust’s policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its net taxable income and net realized capital gains, if any, to its shareowners. Therefore, no provision for federal income taxes is required. As of March 31, 2021, the Trust did not accrue any interest or penalties with respect to uncertain tax positions, which, if applicable, would be recorded as an income tax expense on the Statement of Operations. Tax returns filed within the prior three years remain subject to examination by federal and state tax authorities.

The amount and character of income and capital gain distributions to shareowners are determined in accordance with federal income tax rules, which may differ from U.S. GAAP. Distributions in excess of net investment income or net realized gains are temporary over distributions for financial statement purposes resulting from differences in the recognition or classification of income or distributions for financial statement and tax purposes. Capital accounts within the financial statements are adjusted for permanent book/tax differences to reflect tax character, but are not adjusted for temporary differences.

At March 31, 2021, the Trust was permitted to carry forward indefinitely $930,788 of short-term losses and $26,083,082 of long-term losses.

The tax character of distributions paid during the years ended March 31, 2021 and March 31, 2020, were as follows:

	2021		2020
Distributions paid from:
Tax exempt income	$	14,927,832	$	14,237,459
Ordinary income		361,367		1,037,940
Total	$	15,289,199	$	15,275,399

The following shows the components of distributable earnings (losses) on a federal income tax basis at March 31, 2021:

	2021
Distributable earnings:
Undistributed ordinary income	$	418,211
Capital loss carryforward		(27,013,870	)
Other book/tax temporary differences		(78	)
Undistributed tax-exempt income		758,308
Unrealized appreciation		30,754,584
Total	$	4,917,155

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 33

The difference between book-basis and tax-basis unrealized appreciation/depreciation is primarily attributable to the book/tax differences in the accrual of income on securities in default, the difference between book and tax amortization methods and discounts on fixed income securities.

D.   Automatic Dividend Reinvestment Plan

All shareowners whose shares are registered in their own names automatically participate in the Automatic Dividend Reinvestment Plan (the “Plan”), under which participants receive all dividends and capital gain distributions (collectively, dividends) in full and fractional shares of the Trust in lieu of cash. Shareowners may elect not to participate in the Plan. Shareowners not participating in the Plan receive all dividends and capital gain distributions in cash. Participation in the Plan is completely voluntary and may be terminated or resumed at any time without penalty by notifying American Stock Transfer & Trust Company, the agent for shareowners in administering the Plan (the “Plan Agent”), in writing prior to any dividend record date; otherwise such termination or resumption will be effective with respect to any subsequently declared dividend or other distribution.

If a shareowner’s shares are held in the name of a brokerage firm, bank or other nominee, the shareowner can ask the firm or nominee to participate in the Plan on the shareowner’s behalf. If the firm or nominee does not offer the Plan, dividends will be paid in cash to the shareowner of record. A firm or nominee may reinvest a shareowner’s cash dividends in shares of the Trust on terms that differ from the terms of the Plan.

Whenever the Trust declares a dividend on shares payable in cash, participants in the Plan will receive the equivalent in shares acquired by the Plan Agent either (i) through receipt of additional unissued but authorized shares from the Trust or (ii) by purchase of outstanding shares on the New York Stock Exchange or elsewhere. If, on the payment date for any dividend, the net asset value per share is equal to or less than the market price per share plus estimated brokerage trading fees (market premium), the Plan Agent will invest the dividend amount in newly issued shares. The number of newly issued shares to be credited to each account will be determined by dividing the dollar amount of the dividend by the net asset value per share on the date the shares are issued, provided that the maximum discount from the then current market price per share on the date of issuance does not exceed 5%. If, on the payment date for any dividend, the net asset value per share is greater than the market value (market discount), the Plan Agent will invest the dividend amount in

34 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

shares acquired in open-market purchases. There are no brokerage charges with respect to newly issued shares. However, each participant will pay a pro rata share of brokerage trading fees incurred with respect to the Plan Agent’s open-market purchases. Participating in the Plan does not relieve shareowners from any federal, state or local taxes which may be due on dividends paid in any taxable year. Shareowners holding Plan shares in a brokerage account may be able to transfer the shares to another broker and continue to participate in the Plan.

E.   Risks

The value of securities held by the Trust may go up or down, sometimes rapidly or unpredictably, due to general market conditions, such as real or perceived adverse economic, political or regulatory conditions, inflation, changes in interest rates, lack of liquidity in the bond markets or adverse investor sentiment. In the past several years, financial markets have experienced increased volatility, depressed valuations, decreased liquidity and heightened uncertainty. These conditions may continue, recur, worsen or spread.

At times, the Trust’s investments may represent industries or industry sectors that are interrelated or have common risks, making the Trust more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors.

The municipal bond market can be susceptible to unusual volatility, particularly for lower-rated and unrated securities. Liquidity can be reduced unpredictably in response to overall economic conditions or credit tightening. Municipal issuers may be adversely affected by rising health care costs, increasing unfunded pension liabilities, and by the phasing out of federal programs providing financial support. Unfavorable conditions and developments relating to projects financed with municipal securities can result in lower revenues to issuers of municipal securities, potentially resulting in defaults. Issuers often depend on revenues from these projects to make principal and interest payments. The value of municipal securities can also be adversely affected by changes in the financial condition of one or more individual municipal issuers or insurers of municipal issuers, regulatory and political developments, tax law changes or other legislative actions, and by uncertainties and public perceptions concerning these and other factors. Municipal securities may be more susceptible to down-grades or defaults during recessions or similar periods of economic stress. In recent periods, an increasing number of municipal issuers in the United States have defaulted on obligations and commenced insolvency proceedings.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 35

Financial difficulties of municipal issuers may continue or get worse. To the extent the Trust invests significantly in a single state, including Texas, New York and Massachusetts, or in securities the payments on which are dependent upon a single project or source of revenues, or that relate to a sector or industry, including health care facilities, education, transportation, special revenues and pollution control, the Trust will be more susceptible to associated risks and developments.

The Trust invests in below investment grade (high yield) debt securities and preferred stocks. Some of these high yield securities may be convertible into equity securities of the issuer. Debt securities rated below investment grade are commonly referred to as “junk bonds” and are considered speculative. These securities involve greater risk of loss, are subject to greater price volatility, and are less liquid, especially during periods of economic uncertainty or change, than higher rated debt securities.

With the increased use of technologies such as the Internet to conduct business, the Trust is susceptible to operational, information security and related risks. While the Trust’s Adviser has established business continuity plans in the event of, and risk management systems to prevent, limit or mitigate, such cyber-attacks, there are inherent limitations in such plans and systems, including the possibility that certain risks have not been identified. Furthermore, the Trust cannot control the cybersecurity plans and systems put in place by service providers to the Trust such as Brown Brothers Harriman & Co., the Trust’s custodian and accounting agent, and American Stock Transfer & Trust Company (“AST”), the Trust’s transfer agent. In addition, many beneficial owners of Trust shares hold them through accounts at broker-dealers, retirement platforms and other financial market participants over which neither the Trust nor the Adviser exercises control. Each of these may in turn rely on service providers to them, which are also subject to the risk of cyber-attacks. Cybersecurity failures or breaches at the Adviser or the Trust’s service providers or intermediaries have the ability to cause disruptions and impact business operations, potentially resulting in financial losses, interference with the Trust’s ability to calculate its net asset value, impediments to trading, the inability of Trust shareowners to effect share purchases, or sales or receive distributions, loss of or unauthorized access to private shareowner information and violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, or additional compliance costs. Such costs and losses may not be covered under any insurance. In addition, maintaining vigilance against cyber-attacks may involve substantial costs over time, and system enhancements may themselves be subject to cyber-attacks.

36 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

COVID-19

The respiratory illness COVID-19 caused by a novel coronavirus has resulted in a global pandemic and major disruption to economies and markets around the world, including the United States. Global financial markets have experienced extreme volatility and severe losses, and trading in many instruments has been disrupted. Liquidity for many instruments has been greatly reduced for periods of time. Some interest rates are very low and in some cases yields are negative. Some sectors of the economy and individual issuers have experienced particularly large losses. These circumstances may continue for an extended period of time, and may continue to affect adversely the value and liquidity of the Trust’s investments. The ultimate economic fallout from the pandemic, and the long-term impact on economies, markets, industries and individual issuers, are not known. Governments and central banks, including the Federal Reserve in the U.S., have taken extraordinary and unprecedented actions to support local and global economies and the financial markets. These actions have resulted in significant expansion of public debt, including in the U.S. The impact of these measures, and whether they will be effective to mitigate the economic and market disruption, will not be known for some time. The consequences of high public debt, including its future impact on the economy and securities markets, likewise may not be known for some time.

F.   Statement of Cash Flows

Information on financial transactions which have been settled through the receipt or disbursement of cash or restricted cash is presented in the Statement of Cash Flows. Cash as presented in the Trust’s Statement of Assets and Liabilities includes cash on hand at the Trust’s custodian bank and does not include any short-term investments. As of and for the year ended March 31, 2021, the Trust had no restricted cash presented on the Statement of Assets and Liabilities.

2. Management Agreement

The Adviser manages the Trust’s portfolio. Management fees payable under the Trust’s Advisory Agreement with the Adviser are calculated daily and paid monthly at the annual rate of 0.60% of the Trust’s average daily managed assets. “Managed assets” means (a) the total assets of the Trust, including any form of investment leverage, minus (b) all accrued liabilities incurred in the normal course of operations, which shall not include any liabilities or obligations attributable to investment leverage obtained through (i) indebtedness of any type (including, without limitation, borrowing through a credit facility or the issuance of debt securities), (ii) the issuance of preferred stock or other similar preference securities, and/or

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 37

(iii) any other means. For the year ended March 31, 2021, the net management fee was 0.60% of the Trust’s average daily managed assets, which was equivalent to 0.93% of the Trust’s average daily net assets.

In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Trust as administrative reimbursements. Included in “Due to affiliates” reflected on the Statement of Assets and Liabilities is $18,854 in management fees, administrative costs and certain other reimbursements payable to the Adviser at March 31, 2021.

3. Compensation of Trustees and Officers

The Trust pays an annual fee to its Trustees. The Adviser reimburses the Trust for fees paid to the Interested Trustees. The Trust does not pay any salary or other compensation to its officers. For the year ended March 31, 2021, the Trust paid $20,439 in Trustees’ compensation, which is reflected on the Statement of Operations as Trustees’ fees. At March 31, 2021, the Trust had a payable for Trustees’ fees on its Statement of Assets and Liabilities of $2,622.

4. Transfer Agent

American Stock Transfer & Trust Company (“AST”) serves as the transfer agent to the Trust at negotiated rates. Transfer agent fees and payables shown on the Statement of Operations and the Statement of Assets and Liabilities, respectively, include sub-transfer agent expenses incurred through the Trust’s omnibus relationship contracts.

In addition, the Trust reimbursed the transfer agent for out-of-pocket expenses incurred by the transfer agent related to shareowner communications activities such as proxy and statement mailings, and outgoing phone calls.

5. Trust Shares

There are an unlimited number of common shares of beneficial interest authorized.

Transactions in common shares of beneficial interest for the years ended March 31, 2021 and March 31, 2020 were as follows:

	3/31/21	3/31/20
Shares outstanding at beginning of period	23,899,020	23,899,020
Shares outstanding at end of period	23,899,020	23,899,020

The Trust may classify or reclassify any unissued shares of beneficial interest into one or more series of preferred shares of beneficial interest.

38 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

 

As of March 31, 2021, the Trust has outstanding 1,800 Variable Rate MuniFund Term Preferred Shares Series 2021 (“Series 2021 VMTP Shares” or “VMTP Shares”). The Trust issued 1,600 VMTP Shares on February 16, 2018 and 200 VMTP Shares on February 16, 2021. See Note 6 for additional information.

Prior to February 16, 2018, the Trust had outstanding 3,000 Series A APS and 3,000 Series B APS. The Trust mailed a notice of redemption and deposited funds sufficient to redeem the APS with the auction agent on February 16, 2018. The Trust redeemed all outstanding Series A APS and Series B APS on February 20, 2018.

6. Variable Rate MuniFund Term Preferred Shares

The Trust has 1,800 shares issued and outstanding of Series 2021 VMTP Shares, with a liquidation preference of $100,000 per share. VMTP Shares are issued via private placement and are not publicly available.

The Trust is obligated to redeem its VMTP Shares by the date as specified in its offering document (“Term Redemption Date”), unless earlier redeemed by the Trust. VMTP Shares are subject to optional and mandatory redemption in certain circumstances. The VMTP Shares may be redeemed at the option of the Trust, subject to payment of premium for approximately one year following the date of issuance (“Optional Redemption Date”), and at the redemption price per share thereafter. The redemption price per share is equal to the sum of the liquidation preference per share plus any accumulated but unpaid dividends. The Trust may be obligated to redeem a certain amount of the VMTP Shares if it fails to maintain certain asset coverage and leverage ratio requirements and such failures are not cured by the applicable cure date. The Term Redemption Date for the Trust’s Series 2021 VMTP Shares was extended from August 2, 2021 to August 2, 2024 in February 2021. No other terms of the VMTP shares have changed. Six months prior to Term Redemption Date, the Trust is required to begin to segregate liquid assets with the Trust’s custodian to fund the redemption. The Term Redemption Date for the Trust’s Series 2021 VMTP Shares is August 2, 2024.

VMTP Shares are subject to restrictions on transfer, generally do not trade, and market quotations are generally not available. VMTP Shares are short-term or short/intermediate-term instruments that pay a variable dividend rate tied to a short-term index, plus an additional fixed “spread” amount established at the time of issuance. For financial reporting purposes, the liquidation preference of VMTP Shares is a liability and is recognized as a component of “Variable Rate MuniFund Term Preferred Shares” on the Statement of Assets and Liabilities since the shares have a stated mandatory redemption date.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 39

Dividends on the VMTP Shares (which are treated as interest payments for financial reporting purposes and are recorded as interest expense on the Statement of Operations) are declared daily, paid monthly and recorded as incurred. For the year-ended March 31, 2021, interest expense on VMTP Shares amounted to $1,846,000. The dividend rate for the VMTP Shares is determined weekly. Unpaid dividends on VMTP Shares are recognized as “Interest Expense Payable” on the Statement of Assets and Liabilities. For the year-ended March 31, 2021, interest expense payable on VMTP Shares amounted to $78. From April 1, 2020 through March 31, 2021, the Series 2021 VMTP Shares paid an average dividend rate of 1.12% and the average liquidation value outstanding of VMTP Shares for the Trust during the year ended March 31, 2021, was $162,410,958.

No costs incurred in connection with the Trust’s offering of VMTP Shares were recorded as a deferred charge, which is being amortized over the life of the shares and is recognized as a component of “Variable Rate MuniFund Term Preferred Shares on the Statement of Assets and Liabilities.

Transactions in the Series 2021 VMTP Shares during the Trust’s current and prior reporting periods were as follows:

	Year Ended 3/31/2021		Year Ended 3/31/2020
	Shares	Amount	Shares	Amount
VMTP Shares issued	200	$20,000,000	—	$ —
VMTP Shares exchanged	—	—	—	—
Net increase (decrease)	200	$20,000,000	—	$ —

7. Subsequent Events

A monthly dividend was declared on April 6, 2021 from undistributed and accumulated net investment income of $0.0525 per common share payable April 30, 2021, to common shareowners of record on April 19, 2021.

Subsequent to March 31, 2021, dividends declared and paid on VMTP Shares totaled $131,257 through April 30, 2021.

On April 21, 2021, Pioneer High Income Trust redomiciled from a Delaware statutory trust to a Maryland corporation and was renamed Pioneer High Income Fund, Inc. The Fund, previously organized as a Delaware statutory trust, redomiciled to a Maryland corporation (the “redomiciling”). The redomiciling was effected through a statutory merger of the predecessor Delaware statutory trust (the “Predecessor Entity”) with and into a newly-established Maryland corporation formed for the purpose of effecting the redomiciling (the “Successor Entity”) pursuant to the terms of an Agreement and Plan of Merger entered into by and between the Predecessor Entity and the Successor Entity (the “Merger”). Upon effectiveness of the Merger, (i) the Successor Entity became the successor in interest to the

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Fund, (ii) each outstanding share of common stock of the Predecessor Entity was automatically converted into one share of common stock of the Successor Entity, (iii) each outstanding VMTP Share of the Predecessor Entity was automatically converted into one VMTP Share of the Successor Entity, and (iv) the shareholders of the Predecessor Entity became stockholders of the Successor Entity. Neither the Fund nor its stockholders realized gain (loss) as a direct result of the Merger. Accordingly, the Merger had no effect on the Fund’s operations.

In connection with the redomiciling, the Fund’s name changed from Pioneer Municipal High Income Advantage Trust to Pioneer Municipal High Income Advantage Fund, Inc. The Fund’s ticker symbol on the New York Stock Exchange did not change.

The redomiciling did not result in any change to the investment adviser, investment objective and strategies, portfolio management team, policies and procedures or the members of the Board overseeing the Fund.

Following the Fund’s redomiciling, the rights of shareholders are governed by Maryland General Corporation Law and the Articles of Incorporation and Bylaws of the Successor Entity. In addition, the Fund is subject to the Maryland Control Share Acquisition Act (the “Control Share Act”) following the redomiciling.

The Control Share Act generally provides that any holder of “control shares” acquired in a “control share acquisition” may not exercise voting rights with respect to the “control shares,” except to the extent approved by a vote of two-thirds of all the votes entitled to be cast on the matter. Generally, “control shares” are shares that, when aggregated with shares already owned by an acquiring person, would entitle the acquiring person to exercise 10% or more, 33 1/3% or more, or a majority of the total voting power of shares entitled to vote in the election of directors. The Control Share Act provides that a “control share acquisition” does not include the acquisition of shares in a merger, consolidation or share exchange. Therefore, a shareholder of the Fund that acquired shares of the Successor Entity as a result of the Merger will be able to exercise voting rights as to those shares even if the number of such shares acquired by the shareholder in the Merger exceeds one or more of the thresholds of the Control Share Act.

The above description of the Control Share Act is only a high-level summary and does not purport to be complete. Investors should refer to the actual provisions of the Control Share Act and the Fund’s Bylaws for more information, including definitions of key terms, various exclusions and exemptions from the statute’s scope, and the procedures by which stockholders may approve the reinstatement of voting rights to holders of “control shares.”

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Report of Independent Registered Public Accounting Firm

To the Board of Trustees and the Shareholders of Pioneer Municipal High Income Advantage Trust:

Opinion on the Financial Statements

We have audited the accompanying statement of assets and liabilities of Pioneer Municipal High Income Advantage Trust (the “Trust”), including the schedule of investments, as of March 31, 2021, and the related statements of operations and cash flows for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, the financial highlights for each of the four years in the period then ended and the related notes (collectively referred to as the “financial statements”). The financial highlights for the period ended March 31, 2017 were audited by another independent registered public accounting firm whose report, dated May 26, 2017, expressed an unqualified opinion on those financial highlights. In our opinion, the financial statements present fairly, in all material respects, the financial position of Pioneer Municipal High Income Advantage Trust at March 31, 2021, the results of its operations and its cash flows for the year then ended, the changes in its net assets for each of the two years in the period then ended, and its financial highlights for each of the four years in the period then ended in conformity with U.S. generally accepted accounting principles.

Basis for Opinion

These financial statements are the responsibility of the Trust’s management. Our responsibility is to express an opinion on the Fund’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (“PCAOB”) and are required to be independent with respect to the Trust in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Trust is not required to have, nor were we engaged to perform, an audit of the Trust’s internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting, but not for the purpose of expressing an opinion on the effectiveness of the Trust’s internal control over financial reporting. Accordingly, we express no such opinion.

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Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our procedures included confirmation of securities owned as of March 31, 2021, by correspondence with the custodian and brokers or by other appropriate auditing procedures where replies from brokers were not received. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

We have served as the auditor of one or more Amundi Pioneer investment companies since 2017.

Boston, Massachusetts
May 27, 2021

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Additional Information

Notice is hereby given in accordance with Section 23(c) of the Investment Company Act of 1940 that the Trust may purchase, from time to time, its common shares in the open market.

The percentages of the Trust’s ordinary income distributions that are exempt from nonresident alien (NRA) tax withholding resulting from qualified interest income was 100%.

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INVESTMENT OBJECTIVES, PRINCIPAL INVESTMENT STRATEGIES AND PRINCIPAL RISKS

CHANGES OCCURRING DURING MOST RECENT FISCAL YEAR

The following information in this annual report is a summary of certain changes during the most recent fiscal year. This information may not reflect all of the changes that have occurred since you purchased shares of the Trust. The following principal risk disclosure has been added with respect to the Trust:

Recent events. The respiratory illness COVID-19 caused by a novel coronavirus has resulted in a global pandemic and major disruption to economies and markets around the world, including the United States. Global financial markets have experienced extreme volatility and severe losses, and trading in many instruments has been disrupted. Liquidity for many instruments has been greatly reduced for periods of time. Some interest rates are very low and in some cases yields are negative. Some sectors of the economy and individual issuers have experienced particularly large losses. These circumstances may continue for an extended period of time, and may continue to affect adversely the value and liquidity of the Trust’s investments. The ultimate economic fallout from the pandemic, and the long-term impact on economies, markets, industries and individual issuers, are not known. Governments and central banks, including the Federal Reserve in the U.S., have taken extraordinary and unprecedented actions to support local and global economies and the financial markets. These actions have resulted in significant expansion of public debt, including in the U.S. The impact of these measures, and whether they will be effective to mitigate the economic and market disruption, may not be known for some time. The consequences of high public debt, including its future impact on the economy and securities markets, likewise may not be known for some time.

LIBOR risk. LIBOR (London Interbank Offered Rate) is used extensively in the U.S. and globally as a “benchmark” or “reference rate” for various commercial and financial contracts, including corporate and municipal bonds, bank loans, asset-backed and mortgage-related securities, and interest rate swaps and other derivatives. In 2017, the head of the UK Financial Conduct Authority (“FCA”) announced a desire to phase out the use of LIBOR by the end of 2021. The FCA and LIBOR’s administrator, ICE Benchmark Administration (“IBA”), have announced that most LIBOR rates will no longer be published after the end of 2021 and a majority of U.S. dollar LIBOR rates will no longer by published after June 30, 2023. It is

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possible that the FCA may compel the IBA to publish a subset of LIBOR settings after these dates on a “synthetic” basis, but any such publications would be considered non-representative of the underlying market. Actions by regulators have resulted in the establishment of alternative reference rates to LIBOR in most major currencies. Based on the recommendations of the New York Federal Reserve’s Alternative Reference Rate Committee (comprised of major derivative market participants and their regulators), the U.S. Federal Reserve began publishing a Secured Overnight Funding Rate (“SOFR”) that is intended to replace U.S. Dollar LIBOR. Proposals for alternative reference rates for other currencies have also been announced or have already begun publication, such as SONIA in the United Kingdom. Markets are slowly developing in response to these new rates, and transition planning is at a relatively early stage. Neither the effect of the transition process nor its ultimate success is known. The transition process may lead to increased volatility and illiquidity in markets that currently rely on LIBOR to determine interest rates. The effect of any changes to —or discontinuation of—LIBOR on the portfolio will vary depending on, among other things, provisions in individual contracts and whether, how, and when industry participants develop and adopt new reference rates and alternative reference rates for both legacy and new products and instruments. Because the usefulness of LIBOR as a benchmark may deteriorate during the transition period, these effects could materialize prior to the end of 2021.

Anti-takeover provisions. The Fund’s Articles of Incorporation and Bylaws include provisions that could limit the ability of other entities or persons to acquire control of the Fund or convert the Fund to open-end status. The Fund’s Bylaws also contain a provision providing that the Board of Directors has adopted a resolution to opt in the Fund to the provisions of the Maryland Control Share Acquisition Act (“MCSAA”). Such a provision may discourage third parties from seeking to obtain control of the Fund, which could have an adverse impact on the market price of the Fund’s shares. There can be no assurance, however, that such a provision will be sufficient to deter activist investors that seek to cause the Fund to take actions that may not be aligned with the interests of long-term shareholders.

INVESTMENT OBJECTIVES

The Trust’s primary investment objective is to provide its common shareholders with a high level of current income exempt from regular federal income tax. Distributions of interest income from the Trust’s portfolio of municipal securities generally will be exempt from regular federal income tax. As a secondary investment objective, the Trust also may seek capital appreciation to the extent consistent with its primary objective. Distributions from sources other than interest income from the Trust’s portfolio of municipal securities, including capital gain distributions, are not

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exempt from regular federal income tax. The Trust’s investment objectives and its policy with respect to investment in municipal securities are fundamental policies and may not be changed without the approval of a majority of the outstanding voting securities (as defined in the 1940 Act) of the Trust. There can be no assurance that the Trust will achieve its investment objectives.

PRINCIPAL INVESTMENT STRATEGIES

Under normal market conditions, the Trust will invest substantially all (at least 80%) of its assets (net assets plus borrowings for investment purposes) in debt securities and other obligations issued by or on behalf of states, territories and possessions of the United States and the District of Columbia and their political subdivisions, agencies and instrumentalities, the interest on which is exempt from regular federal income tax (“municipal securities”). Municipal securities are often issued to obtain funds for various public purposes, including the construction of a wide range of public facilities such as bridges, highways, housing, hospitals, mass transportation, schools, streets and water and sewer works. Municipal securities include private activity bonds, pre-refunded municipal securities and auction rate securities. The municipal securities in which the Trust invests may have fixed or variable principal payments and all types of interest rate payments and reset terms, including fixed rate, adjustable rate, zero coupon, contingent, deferred, payment in kind and auction rate features.

Although distributions of interest income from the Trust’s municipal securities generally are exempt from regular federal income tax, distributions from other sources, including capital gain distributions, are not. The Trust is not limited in the portion of its assets that may be invested in municipal securities the interest income on which is a preference item for purposes of the alternative minimum tax for individuals or entities that are subject to such tax. All interest on municipal securities may result in or increase a corporate shareholder’s liability for federal alternative minimum tax. Shareholders should consult a tax adviser about whether an alternative minimum tax applies to them and about state and local taxes on their distributions from the Trust.

The Trust may invest in municipal securities with a broad range of maturities and credit ratings, including both investment grade and below investment grade municipal securities. In managing the Trust’s portfolio, the Adviser adjusts the portfolio’s duration and overall credit quality in light of changing market and economic conditions. In making decisions with respect to specific municipal securities for the Trust’s portfolio, the Adviser employs a disciplined approach, driven primarily by proprietary research

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regarding prevailing interest rates, economic fundamentals at both the national and state levels and in-depth credit research conducted by the Adviser’s investment staff.

The Trust may invest in securities of issuers that are in default or that are in bankruptcy.

Security selection

The Adviser anticipates that the Trust’s investments in revenue obligations will emphasize municipal securities backed by revenue from essential services, such as hospitals and healthcare, power generation, transportation, education and housing. The Adviser considers both broad economic and issuer specific factors in selecting a portfolio designed to achieve the Trust’s investment objectives. In assessing the appropriate maturity, rating and sector weightings of the Trust’s portfolio, the Adviser considers a variety of factors that are expected to influence economic activity and interest rates. These factors include fundamental economic indicators such as the rates of economic growth and inflation, Federal Reserve monetary policy and the relative value of the U.S. dollar compared to other currencies. Once the Adviser determines the preferable portfolio characteristics, the Adviser selects individual securities based upon the terms of the securities (such as yields compared to U.S. Treasuries or comparable issues), liquidity and rating, sector and issuer diversification.

The Adviser attempts to identify investment grade and below investment grade municipal securities that are trading at attractive valuations relative to the Adviser’s evaluation of the issuer’s credit worthiness and, with respect to private activity bonds, the profit potential of the corporation from which the revenue supporting the bonds is derived. The Adviser’s overall investment approach is both top-down and bottom-up. The Adviser first seeks to identify the sectors or regions of the municipal bond market that present the best relative value opportunities, and then bases the Trust’s overall sector and regional weightings on that determination. Once the Adviser establishes the overall regional and sector weightings, the Adviser focuses on selecting those securities within each sector or region that meet its fundamental criteria. In determining sector weightings, the Trust’s portfolio management team also maintains frequent contact with the Adviser’s investment professionals who follow U.S. equities and those who focus on corporate fixed income investments. In many cases, the Adviser will augment its municipal bond credit research and security selection processes with equity research analysis. The Adviser has a fundamental bias towards long-term security selection, rather than engaging in frequent “market timing” or short-term trading. There can be no assurance that this process will be successful.

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Duration management

The Adviser actively manages the duration of the Trust’s portfolio of municipal securities based primarily on the Adviser’s outlook for interest rates. The Adviser considers economic trends, Federal Reserve Board actions and capital markets activity, among other factors, in developing its outlook for interest rates. The Adviser believes that maintaining duration at an appropriate level offers the potential for above-average returns while limiting the risks of interest rate volatility. Duration seeks to measure the price sensitivity of a fixed income security to changes in interest rates. Unlike maturity, duration takes into account interest payments that occur throughout the course of holding the bond. The longer a portfolio’s duration, the more sensitive it will be to changes in interest rates. For example, if the Trust has a two year duration, then all other things being equal, the Trust will decrease in value by two percent if interest rates rise one percent. The Adviser modifies the average duration of the Trust’s portfolio in response to market conditions. The Adviser may employ certain strategies to reduce the Trust’s interest rate sensitivity, including investments in interest rate swap or cap transactions. There is no assurance that the Adviser will do so or that such strategies will be successful.

Credit management

The Trust may invest in municipal securities with a broad range of credit ratings, including both investment grade and below investment grade municipal securities. At least 40% of the Trust’s portfolio of municipal securities will be rated investment grade at the time of acquisition (that is, rated at least Baa by Moody’s Investors Service, Inc. (“Moody’s”) or BBB by Standard & Poor’s Ratings Group (“S&P”) or, if unrated, determined by the Adviser to be of comparable credit quality). No more than 60% of the Trust’s portfolio of municipal securities will be rated below investment grade at the time of acquisition (that is, Ba or lower by Moody’s or BB or lower by S&P or, if unrated, determined by the Adviser to be of comparable credit quality). No more than 10% of the Trust’s portfolio of municipal securities will be rated at the time of acquisition B or lower by Moody’s and S&P or, if unrated, determined by the Trust’s investment adviser to be of comparable credit quality. Municipal securities of below investment grade quality are regarded as having predominantly speculative characteristics with respect to the issuer’s capacity to pay interest and repay principal and are commonly referred to as “junk bonds” or “high yield securities.” They involve greater risk of loss, are subject to greater price volatility and are less liquid, especially during periods of economic uncertainty or change, than higher rated municipal securities. Municipal securities rated Ba or BB may face significant ongoing uncertainties or exposure to adverse business, financial or economic conditions that could lead to the issuer being unable

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to meet its financial commitments. The protection of interest and principal payments may be moderate and not well-safeguarded during both good and bad times. Municipal securities rated B generally lack the characteristics of a desirable investment. Assurance of interest and principal payments or of maintenance of other terms of the contract over any long period of time may be low, and such municipal securities are more vulnerable to nonpayment than obligations rated BB. Adverse business, financial or economic conditions will likely impair the issuer’s capacity or willingness to meet its financial commitment on municipal securities. Municipal securities rated Caa, Ca or C by Moody’s or CCC, CC or C by S&P are generally speculative to a high degree. These municipal securities may be in default or they may present elements of danger with respect to principal or interest. Generally, the issuers are dependent upon favorable business, financial and economic conditions to meet their financial commitments on such municipal securities. The Trust may invest in high yield municipal securities of any rating, including securities that are in default at the time of purchase.

The Adviser determines the allocation of the Trust’s assets among securities with different credit ratings depending upon the Adviser’s evaluation of factors such as the spread between the yields on municipal securities of different ratings, changes in default rates, general economic conditions and the outlook for fiscal issues facing municipal issuers. Generally, as the spread between the yield on investment grade and non-investment grade securities widens, the Adviser will allocate a greater portion of the Trust’s assets to non-investment grade municipal securities. If the spread based on relative credit quality narrows, the Adviser may determine that high yield municipal securities no longer offer a sufficient risk premium and increase the average credit quality of the Trust’s portfolio. As the economy strengthens and the default risk lessens, the Adviser may increase the Trust’s investment in lower quality, non-investment grade securities. The Adviser also seeks to mitigate the risks of investing in below investment grade securities through a disciplined approach, driven primarily by fundamental research to assess an issuer’s credit quality and the relative value of its securities. Moreover, with respect to below investment grade securities that are private activity bonds, the Adviser intends to emphasize securities that are backed by revenue from publicly traded companies. The Adviser believes that this focus offers the potential for an informational advantage due to the substantial reporting requirements of public companies. With respect to investments in below investment grade private activity bonds, the Adviser also seeks to leverage its corporate credit research capabilities by selecting securities for the Trust payable by revenue derived from issuers followed by its staff focusing on below investment grade corporate issuers. The Adviser believes that a prudent blend of investment grade and non-investment grade municipal securities offers

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investors the opportunity for high current yield without undue credit risk. High yield municipal securities also have shown low correlation to other asset classes, including corporate bonds, U.S. Treasury securities and equity securities, providing diversification potential to an investment portfolio.

Portfolio Contents

Municipal securities. Municipal securities are often issued to obtain funds for various public purposes, including refunding outstanding obligations, funding for general operating expenses and lending to other public institutions and facilities. Municipal securities also include certain “private activity bonds” or industrial development bonds, which are issued by or on behalf of public authorities to provide financing aid to acquire sites or construct or equip facilities within a municipality for privately or publicly owned corporations. The two principal classifications of municipal securities are “general obligations” and “revenue obligations.” General obligations are secured by the issuer’s pledge of its full faith and credit for the payment of principal and interest, although the characteristics and enforcement of general obligations may vary according to the law applicable to the particular issuer. Revenue obligations, which include, but are not limited to, private activity bonds, certificates of participation and certain municipal notes, are not backed by the credit and taxing authority of the issuer and are payable solely from the revenues derived from a particular facility or class of facilities or, in some cases, from the proceeds of a special excise or other specific revenue source. The obligations of the issuer of a revenue obligation may, in addition, be backed by a letter of credit from a bank, a guarantee from another issuer or insurance. The credit rating assigned to municipal securities may reflect the existence of these guarantees, letters of credit or other credit enhancement features. General obligations and revenue obligations may be issued in a variety of forms, including commercial paper, fixed, variable and floating rate securities, tender option bonds, auction rate bonds, zero coupon bonds, deferred interest bonds and capital appreciation bonds. In addition to general obligations and revenue obligations, there are a variety of hybrid and special types of municipal securities.

One or a small number of institutional investors such as the Trust may purchase an entire issue of municipal securities. Thus, the issue may not be said to be publicly offered. Unlike some securities that are not publicly offered, a secondary market exists for many municipal securities that were not publicly offered initially and such securities may be readily marketable.

Although distributions of interest income from the Trust’s municipal securities are generally exempt from regular federal income tax, distributions from other sources, including capital gain distributions, and any gains on the sale of your common shares are not. You should consult

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your tax adviser as to whether the alternative minimum tax applies to you and as to whether you will be subject to state and local taxes on your distributions from the Trust.

From time to time, proposals have been introduced before Congress for the purpose of restricting or eliminating the federal income tax exemption for interest on municipal securities. The Trust cannot predict what legislation, if any, may be proposed in the future in Congress regarding the federal income tax status of interest on municipal securities. Such proposals, if enacted, might materially and adversely affect the Trust.

The Trust may invest 25% or more of the value of its total assets in municipal securities of issuers located in the same state or territory or in the same economic sector. The Trust will not invest more than 25% of its total assets in issuers in a single industry. Governmental issuers of municipal securities are not considered part of any industry.

The Trust may invest in municipal securities that are collateralized by the proceeds from class action or other litigation against the tobacco industry. Payment by tobacco industry participants of such proceeds is spread over several years, and the collection and distribution of such proceeds to the issuers of municipal securities is dependent upon the financial health of such tobacco industry participants, which cannot be assured. Additional litigation, government regulation or prohibition on the sales of tobacco products, or the seeking of protection under the bankruptcy laws, could adversely affect the tobacco industry, which, in turn, could have an adverse affect on tobacco-related municipal securities. Under normal market conditions, the Trust intends to limit its investment in tobacco settlement bonds to approximately 10% of the Trust’s total assets.

Municipal Leases and Certificates of Participation. The Trust may invest in municipal leases and certificates of participation in such leases. A municipal lease is an obligation in the form of a lease or installment purchase that is issued by a state or local government to acquire equipment and facilities. Income from such obligations is generally exempt from state and local taxes in the state of issuance. Municipal leases frequently involve special risks not normally associated with general obligations or revenue obligations. Leases and installment purchase or conditional sale contracts (which normally provide for title to the leased asset to pass eventually to the governmental issuer) have evolved as a means for governmental issuers to acquire property and equipment without meeting the constitutional and statutory requirements for the issuance of debt. The debt issuance limitations are deemed to be inapplicable because of the inclusion in many leases or contracts of “non-appropriation” clauses that relieve the governmental issuer of any obligation to make future payments under the lease or contract unless money is appropriated for such purpose by the appropriate

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legislative body on a yearly or other periodic basis. In addition, such leases or contracts may be subject to the temporary abatement of payments in the event the issuer is prevented from maintaining occupancy of the leased premises or utilizing the leased equipment. Although the obligations may be secured by the leased equipment or facilities, the disposition of the property in the event of non-appropriation or foreclosure might prove difficult, time consuming and costly, and result in a delay in recovering or the failure fully to recover the Trust’s original investment. To the extent that the Trust invests in unrated municipal leases or participates in such leases, the credit quality and risk of cancellation of such unrated leases will be monitored on an ongoing basis.

A certificate of participation represents an undivided interest in an unmanaged pool of municipal leases, installment purchase agreements or other instruments. The certificates are typically issued by a municipal agency, a trust or other entity that has received an assignment of the payments to be made by the state or political subdivision under such leases or installment purchase agreements. Such certificates provide the Trust with the right to a pro rata undivided interest in the underlying municipal securities. In addition, such participations generally provide the Trust with the right to demand payment, on not more than seven days’ notice, of all or any part of the Trust’s participation interest in the underlying municipal securities, plus accrued interest.

Certain municipal lease obligations and certificates of participation may be deemed to be illiquid for the purpose of the Trust’s limitation on investments in illiquid securities. Other municipal lease obligations and certificates of participation acquired by the Trust may be determined by the Adviser, pursuant to guidelines adopted by the Board of Directors, to be liquid securities for the purpose of such limitation. In determining the liquidity of municipal lease obligations and certificates of participation, the Adviser will consider a variety of factors, including: (i) the willingness of dealers to bid for the obligation; (ii) the number of dealers willing to purchase or sell the obligation and the number of other potential buyers; (iii) the frequency of trades or quotes for the obligation; and (iv) the nature of the marketplace trades. In addition, the Adviser will consider factors unique to particular lease obligations and certificates of participation affecting the marketability thereof. These include the general creditworthiness of the issuer, the importance to the issuer of the property covered by the lease and the likelihood that the marketability of the obligation will be maintained throughout the time the obligation is held by the Trust.

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Municipal Notes. Municipal securities in the form of notes generally are used to provide for short-term capital needs, in anticipation of an issuer’s receipt of other revenues or financing, and typically have maturities of up to three years. Such instruments may include tax anticipation notes, revenue anticipation notes, bond anticipation notes, tax and revenue anticipation notes and construction loan notes. Tax anticipation notes are issued to finance the working capital needs of governments. Generally, they are issued in anticipation of various tax revenues, such as income, sales, property, use and business taxes, and are payable from these specific future taxes. Revenue anticipation notes are issued in expectation of receipt of other kinds of revenue, such as federal revenues available under federal revenue sharing programs. Bond anticipation notes are issued to provide interim financing until long-term bond financing can be arranged. In most cases, the long-term bonds then provide the funds needed for repayment of the notes. Tax and revenue anticipation notes combine the funding sources of both tax anticipation notes and revenue anticipation notes. Construction loan notes are sold to provide construction financing. Mortgage notes insured by the Federal Housing Authority secure these notes; however, the proceeds from the insurance may be less than the economic equivalent of the payment of principal and interest on the mortgage note if there has been a default. The anticipated revenues from taxes, grants or bond financing generally secure the obligations of an issuer of municipal notes. An investment in such instruments, however, presents a risk that the anticipated revenues will not be received or that such revenues will be insufficient to satisfy the issuer’s payment obligations under the notes or that refinancing will be otherwise unavailable.

Tax-exempt commercial paper. Issues of commercial paper typically represent short-term, unsecured, negotiable promissory notes. These obligations are issued by state and local governments and their agencies to finance the working capital needs of municipalities or to provide interim construction financing and are paid from general revenues of municipalities or are refinanced with long-term debt. In most cases, tax-exempt commercial paper is backed by letters of credit, lending agreements, note repurchase agreements or other credit facility agreements offered by banks or other institutions.

Pre-refunded municipal securities. The principal of and interest on pre-refunded municipal securities are no longer paid from the original revenue source for the securities. Instead, the source of such payments is typically an escrow fund consisting of U.S. government securities. The assets in the escrow fund are derived from the proceeds of refunding bonds issued by the same issuer as the pre-refunded municipal securities. Issuers of municipal securities use this advance refunding technique to obtain more favorable terms with respect to securities that are not yet subject to call or

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redemption by the issuer. For example, advance refunding enables an issuer to refinance debt at lower market interest rates, restructure debt to improve cash flow or eliminate restrictive covenants in the indenture or other governing instrument for the pre-refunded municipal securities. However, except for a change in the revenue source from which principal and interest payments are made, the pre-refunded municipal securities remain outstanding on their original terms until they mature or are redeemed by the issuer.

Private activity bonds. Private activity bonds, formerly referred to as industrial development bonds, are issued by or on behalf of public authorities to obtain funds to provide privately operated housing facilities, airport, mass transit or port facilities, sewage disposal, solid waste disposal or hazardous waste treatment or disposal facilities and certain local facilities for water supply, gas or electricity. Other types of private activity bonds, the proceeds of which are used for the construction, equipment, repair or improvement of privately operated industrial or commercial facilities, may constitute municipal securities, although the current federal tax laws place substantial limitations on the size of such issues. The Trust’s distributions of its interest income from private activity bonds may subject certain investors to the federal alternative minimum tax.

Tender option bonds. A tender option bond is a municipal security (generally held pursuant to a custodial arrangement) having a relatively long maturity and bearing interest at a fixed rate substantially higher than prevailing short-term, tax-exempt rates. The bond is typically issued with the agreement of a third party, such as a bank, broker-dealer or other financial institution, which grants the security holders the option, at periodic intervals, to tender their securities to the institution and receive the face value thereof. As consideration for providing the option, the financial institution receives periodic fees equal to the difference between the bond’s fixed coupon rate and the rate, as determined by a remarketing or similar agent at or near the commencement of such period, that would cause the securities, coupled with the tender option, to trade at par on the date of such determination. Thus, after payment of this fee, the security holder effectively holds a demand obligation that bears interest at the prevailing short-term, tax-exempt rate. However, an institution will not be obligated to accept tendered bonds in the event of certain defaults or a significant downgrade in the credit rating assigned to the issuer of the bond. The liquidity of a tender option bond is a function of the credit quality of both the bond issuer and the financial institution providing liquidity. Tender option bonds are deemed to be liquid unless, in the opinion of the Adviser, the credit quality of the bond issuer and the financial institution is deemed, in light of the Trust’s credit quality requirements, to be inadequate and the bond would not otherwise be readily marketable. The

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Trust intends to invest in tender option bonds the interest on which will, in the opinion of bond counsel, counsel for the issuer of interests therein or counsel selected by the Adviser, be exempt from regular federal income tax. However, because there can be no assurance that the Internal Revenue Service (the “IRS”) will agree with such counsel’s opinion in any particular case, there is a risk that the Trust will not be considered the owner of such tender option bonds and thus will not be entitled to treat such interest as exempt from such tax. Additionally, the federal income tax treatment of certain other aspects of these investments, including the proper tax treatment of tender option bonds and the associated fees in relation to various regulated investment company tax provisions, is unclear. The Trust intends to manage its portfolio in a manner designed to eliminate or minimize any adverse impact from the tax rules applicable to these investments.

Auction rate securities. The Trust may invest in auction rate securities. Auction rate securities include auction rate municipal securities and auction rate preferred securities issued by closed-end investment companies that invest primarily in municipal securities (collectively, “auction rate securities”). Provided that the auction mechanism is successful, auction rate securities usually permit the holder to sell the securities in an auction at par value at specified intervals. The dividend is reset by a “Dutch” auction in which bids are made by broker-dealers and other institutions for a certain amount of securities at a specified minimum yield. The dividend rate set by the auction is the lowest interest or dividend rate that covers all securities offered for sale. While this process is designed to permit auction rate securities to be traded at a value equal to the liquidation preference, there is some risk that an auction will fail due to insufficient demand for the securities. The Trust will take the time remaining until the next scheduled auction date into account for the purpose of determining the securities’ duration. The Trust’s investments in auction rate securities of closed-end funds are subject to the limitations prescribed by the 1940 Act.

Illiquid securities. The Trust may invest in bonds or other municipal securities that lack a secondary trading market or are otherwise considered illiquid. Liquidity of a security relates to the ability easily to dispose of the security and the price to be obtained upon disposition of the security, which may be less than would be obtained for a comparable, more liquid security. The Trust may invest up to 20% of its total assets in illiquid investments. Such investments may affect the Trust’s ability to realize its net asset value in the event of a voluntary or involuntary liquidation of its assets.

Structured securities. The Trust may invest in structured securities. The value of the principal and/or interest on such securities is determined by reference to changes in the value of specific currencies, interest rates,

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commodities, indices or other financial indicators (“reference”) or the relative change in two or more references. The interest rate or the principal amount payable upon maturity or redemption may be increased or decreased depending upon changes in the reference. The terms of the structured securities may provide, in certain circumstances, that no principal is due at maturity and, therefore, may result in a loss of the Trust’s investment. Changes in the interest rate or principal payable at maturity may be a multiple of the changes in the value of the reference. Consequently, structured securities may entail a greater degree of market risk than other types of fixed income securities.

Insured municipal securities. The Trust may invest in “insured” municipal securities, which are securities for which scheduled payments of interest and principal are guaranteed by a private (non-governmental) insurance company. The insurance only entitles the Trust to receive at maturity the face or par value of the securities held by the Trust. The insurance does not guarantee the market value of the municipal securities or the value of the shares of the Trust. The Trust may utilize new issue or secondary market insurance. A bond issuer who wishes to increase the credit rating of a security purchases a new issue insurance policy. By paying a premium and meeting the insurer’s underwriting standards, the bond issuer is able to obtain a high credit rating (usually, Aaa from Moody’s or AAA from S&P) for the issued security. Such insurance is likely to increase the purchase price and resale value of the security. New issue insurance policies are non-cancelable and continue in force as long as the bonds are outstanding. A secondary market insurance policy is purchased by an investor subsequent to a bond’s original issuance and generally insures a particular bond for the remainder of its term.

Standby commitments. In order to enhance the liquidity of municipal securities, the Trust may acquire the right to sell a security to another party at a guaranteed price and date. Such a right to resell may be referred to as a “standby commitment” or “liquidity put,” depending on its characteristics. The aggregate price which the Trust pays for securities with standby commitments may be higher than the price which otherwise would be paid for the securities. Standby commitments may not be available or may not be available on satisfactory terms. Standby commitments may involve letters of credit issued by domestic or foreign banks supporting the other party’s ability to purchase the security. The right to sell may be exercisable on demand or at specified intervals and may form part of a security or be acquired separately by the Trust.

Because the period prior to the put date is generally less than 365 days, the Trust generally values the municipal securities subject to standby commitments at amortized cost. The Board of Directors has adopted

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procedures pursuant to which the Adviser may determine that amortized cost represents the fair value of these securities. The exercise price of the standby commitments is expected to approximate such amortized cost. Consequently, no separate value is assigned to standby commitments for purposes of determining the Trust’s net asset value. The cost of a standby commitment is carried as unrealized depreciation from the time of purchase until it is exercised or expires. Since the value of a standby commitment is dependent on the ability of the standby commitment writer to meet its obligation to repurchase, the Trust’s policy is to enter into standby commitment transactions only with banks, brokers or dealers that present a minimal risk of default. However, this policy reduces, but does not eliminate, the risk of default by the standby commitment writer.

Use of Leverage by the Trust. The Trust may use financial leverage on an ongoing basis for investment purposes. The Trust currently uses leverage through the issuance of Variable Rate MuniFund Term Preferred Shares (“VMTP Shares”). VMTP Shares are issued via private placement and are not publicly available. Leverage creates special risks not associated with unleveraged funds having a similar investment objectives and policies. These include the possibility of higher volatility of both the net asset value of the Trust and the value of assets serving as asset coverage for the borrowing. The fees and expenses attributed to leverage, including any increase in the management fees, will be borne by holders of common shares. The Adviser intends only to leverage the Trust when it believes that the potential total return on additional investments purchased with the proceeds of leverage is likely to exceed the costs incurred in connection with the leverage. The Trust may not be leveraged at all times, and the amount of leverage, if any, may vary depending on a variety of factors, including the Adviser’s outlook for interest rates and credit markets and the costs that the Trust would incur as a result of such leverage. The Trust’s leveraging strategy may not be successful.

Except for the Trust’s investment objectives and the Trust’s policy to invest at least 80% of its assets in municipal securities, the Trust’s investment strategies and policies may be changed from time to time without shareholder approval, unless specifically stated otherwise.

Other Investments. Normally, the Trust will invest substantially all of its assets to meet its investment objectives. The Trust may invest the remainder of its assets in securities with remaining maturities of less than one year or cash equivalents, or it may hold cash. For temporary defensive purposes, the Trust may depart from its principal investment strategies and invest part or all of its assets in securities with remaining maturities of less than one year or cash equivalents, or it may hold cash. During such periods, the Trust may not be able to achieve its investment objectives.

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Zero Coupon Securities. The Trust may invest in zero coupon securities. Zero coupon securities are debt instruments that do not pay interest during the life of the security but are issued at a discount from the amount the investor will receive when the issuer repays the amount borrowed (the face value). The discount approximates the total amount of interest that would be paid at an assumed interest rate.

Derivatives. The Trust may, but is not required to, use futures and options on securities, indices and currencies, forward foreign currency exchange contracts, swaps, credit-linked notes and other derivatives. The Trust also may enter into credit default swaps, which can be used to acquire or to transfer the credit risk of a security or index of securities without buying or selling the security or securities comprising the relevant index. A derivative is a security or instrument whose value is determined by reference to the value or the change in value of one or more securities, currencies, indices or other financial instruments. The Trust may use derivatives for a variety of purposes, including:

▪ In an attempt to hedge against adverse changes in the market prices of securities, interest rates or currency exchange rates

▪ As a substitute for purchasing or selling securities

▪ To attempt to increase the Trust’s return as a non-hedging strategy that may be considered speculative

• To manage portfolio characteristics (for example, the duration or credit quality of the Trust’s portfolio)

▪ As a cash flow management technique

The Trust may choose not to make use of derivatives for a variety of reasons, and any use may be limited by applicable law and regulations.

Other Investment Companies. The Trust may invest in the securities of other investment companies to the extent that such investments are consistent with the Trust’s investment objectives and principal investment strategies and permissible under the 1940 Act. Subject to the limitations on investment in other investment companies, the Trust may invest in “ETFs.”

Repurchase Agreements. In a repurchase agreement, the Trust purchases securities from a broker/dealer or a bank, called the counterparty, upon the agreement of the counterparty to repurchase the securities from the Trust at a later date, and at a specified price, which is typically higher than the purchase price paid by the Trust. The securities purchased serve as the Trust’s collateral for the obligation of the counterparty to repurchase the securities. If the counterparty does not repurchase the securities, the Trust is entitled to sell the securities, but the Trust may not be able to sell them

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for the price at which they were purchased, thus causing a loss. Additionally, if the counterparty becomes insolvent, there is some risk that the Trust will not have a right to the securities, or the immediate right to sell the securities.

PRINCIPAL RISKS

General. The Trust is a closed-end management investment company designed primarily as a long-term investment and not as a trading tool. The Trust is not a complete investment program and should be considered only as an addition to an investor’s existing portfolio of investments. Because the Trust may invest substantially in high yield debt securities, an investment in the Trust’s shares is speculative in that it involves a high degree of risk. Due to uncertainty inherent in all investments, there can be no assurance that the Trust will achieve its investment objective. Instruments in which the Trust invests may only have limited liquidity, or may be illiquid.

Market risk. The market prices of securities held by the Trust may go up or down, sometimes rapidly or unpredictably, due to general market conditions, such as real or perceived adverse economic, political, or regulatory conditions, recessions, inflation, changes in interest or currency rates, lack of liquidity in the bond markets, the spread of infectious illness or other public health issues, or adverse investor sentiment. In the past decade, financial markets throughout the world have experienced increased volatility, depressed valuations, decreased liquidity and heightened uncertainty. Governmental and non-governmental issuers have defaulted on, or been forced to restructure, their debts. These conditions may continue, recur, worsen or spread. Events that have contributed to these market conditions include, but are not limited to, major cybersecurity events; geopolitical events (including wars and terror attacks); measures to address budget deficits; downgrading of sovereign debt; changes in oil and commodity prices; dramatic changes in currency exchange rates; global pandemics; and public sentiment. U.S. and non-U.S. governments and central banks have provided significant support to financial markets, including by keeping interest rates at historically low levels. U.S. Federal Reserve or other U.S. or non-U.S. governmental or central bank actions, including interest rate increases or decreases, or contrary actions by different governments, could negatively affect financial markets generally, increase market volatility and reduce the value and liquidity of securities in which the Trust invests. Policy and legislative changes in the U.S. and in other countries are affecting many aspects of financial regulation, and these and other events affecting global markets, such as the United Kingdom’s exit from the European Union (or Brexit), may in some instances contribute to decreased liquidity and increased volatility in the financial markets. The

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impact of these changes on the markets, and the practical implications for market participants, may not be fully known for some time. Economies and financial markets throughout the world are increasingly interconnected. Economic, financial or political events, trading and tariff arrangements, terrorism, natural disasters, infectious illness or public health issues, and other circumstances in one country or region could have profound impacts on global economies or markets. As a result, whether or not the Trust invests in securities of issuers located in or with significant exposure to the countries directly affected, the value and liquidity of the Trust’s investments may be negatively affected. The Trust may experience a substantial or complete loss on any individual security or derivative position.

Recent events. The respiratory illness COVID-19 caused by a novel coronavirus has resulted in a global pandemic and major disruption to economies and markets around the world, including the United States. Global financial markets have experienced extreme volatility and severe losses, and trading in many instruments has been disrupted. Liquidity for many instruments has been greatly reduced for periods of time. Some interest rates are very low and in some cases yields are negative. Some sectors of the economy and individual issuers have experienced particularly large losses. These circumstances may continue for an extended period of time, and may continue to affect adversely the value and liquidity of the Trust’s investments. The ultimate economic fallout from the pandemic, and the long-term impact on economies, markets, industries and individual issuers, are not known. Governments and central banks, including the Federal Reserve in the U.S., have taken extraordinary and unprecedented actions to support local and global economies and the financial markets. These actions have resulted in significant expansion of public debt, including in the U.S. The impact of these measures, and whether they will be effective to mitigate the economic and market disruption, may not be known for some time. The consequences of high public debt, including its future impact on the economy and securities markets, likewise may not be known for some time.

LIBOR risk. LIBOR (London Interbank Offered Rate) is used extensively in the U.S. and globally as a “benchmark” or “reference rate” for various commercial and financial contracts, including corporate and municipal bonds, bank loans, asset-backed and mortgage-related securities, and interest rate swaps and other derivatives. In 2017, the head of the UK Financial Conduct Authority (“FCA”) announced a desire to phase out the use of LIBOR by the end of 2021. The FCA and LIBOR’s administrator, ICE Benchmark Administration (“IBA”), have announced that most LIBOR rates will no longer be published after the end of 2021 and a majority of U.S. dollar LIBOR rates will no longer by published after June 30, 2023. It is

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possible that the FCA may compel the IBA to publish a subset of LIBOR settings after these dates on a “synthetic” basis, but any such publications would be considered non-representative of the underlying market. Actions by regulators have resulted in the establishment of alternative reference rates to LIBOR in most major currencies. Based on the recommendations of the New York Federal Reserve’s Alternative Reference Rate Committee (comprised of major derivative market participants and their regulators), the U.S. Federal Reserve began publishing a Secured Overnight Funding Rate (“SOFR”) that is intended to replace U.S. Dollar LIBOR. Proposals for alternative reference rates for other currencies have also been announced or have already begun publication, such as SONIA in the United Kingdom. Markets are slowly developing in response to these new rates, and transition planning is at a relatively early stage. Neither the effect of the transition process nor its ultimate success is known. The transition process may lead to increased volatility and illiquidity in markets that currently rely on LIBOR to determine interest rates. The effect of any changes to —or discontinuation of—LIBOR on the portfolio will vary depending on, among other things, provisions in individual contracts and whether, how, and when industry participants develop and adopt new reference rates and alternative reference rates for both legacy and new products and instruments. Because the usefulness of LIBOR as a benchmark may deteriorate during the transition period, these effects could materialize prior to the end of 2021.

High yield or “junk” bond risk. Debt securities that are below investment grade, called “junk bonds,” are speculative, have a higher risk of default or are already in default, tend to be less liquid and are more difficult to value than higher grade securities. Junk bonds tend to be volatile and more susceptible to adverse events and negative sentiments. These risks are more pronounced for securities that are already in default.

Interest rate risk. Interest rates may go up, causing the value of the Trust’s investments to decline (this risk generally will be greater for securities with longer maturities or durations). For example, if interest rates increase by 1%, the value of a Trust’s portfolio with a portfolio duration of ten years would be expected to decrease by 10%, all other things being equal. The maturity of a security may be significantly longer than its effective duration. A security’s maturity and other features may be more relevant than its effective duration in determining the security’s sensitivity to other factors affecting the issuer or markets generally, such as changes in credit quality or in the yield premium that the market may establish for certain types of securities.

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Rising interest rates can lead to increased default rates, as issuers of floating rate securities find themselves faced with higher payments. Unlike fixed rate securities, floating rate securities generally will not increase in value if interest rates decline. Changes in interest rates also will affect the amount of interest income the Trust earns on its floating rate investments

Credit risk. If an issuer or guarantor of a security held by the Trust or a counterparty to a financial contract with the Trust defaults on its obligation to pay principal and/or interest, has its credit rating downgraded or is perceived to be less creditworthy, or the credit quality or value of any underlying assets declines, the value of your investment will typically decline.

Prepayment or call risk. Many issuers have a right to prepay their securities. If interest rates fall, an issuer may exercise this right. If this happens, the Trust will not benefit from the rise in market price that normally accompanies a decline in interest rates, and will be forced to reinvest prepayment proceeds at a time when yields on securities available in the market are lower than the yield on the prepaid security. The Trust also may lose any premium it paid on the security.

Extension risk. During periods of rising interest rates, the average life of certain types of securities may be extended because of slower than expected principal payments. This may lock in a below market interest rate, increase the security’s duration and reduce the value of the security.

Risk of illiquid investments. Certain securities and derivatives held by the Trust may be impossible or difficult to purchase, sell or unwind. Illiquid securities and derivatives also may be difficult to value. Liquidity risk may be magnified in a rising interest rate environment. If the Trust is forced to sell an illiquid asset or unwind a derivatives position, the Trust may suffer a substantial loss or may not be able to sell at all.

Portfolio selection risk. The Adviser’s judgment about the quality, relative yield, relative value or market trends affecting a particular sector or region, market segment, security or about interest rates generally may prove to be incorrect, or there may be imperfections, errors or limitations in the models, tools and information used by the Adviser.

Municipal securities risk. The municipal bond market can be susceptible to unusual volatility, particularly for lower-rated and unrated securities. Liquidity can be reduced unpredictably in response to overall economic conditions or credit tightening. Issuers of municipal securities tend to derive a significant portion of their revenue from taxes, particularly property and income taxes, and decreases in personal income levels and property values and other unfavorable economic factors, such as a general economic recession, adversely affect municipal securities. Municipal issuers may also

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be adversely affected by rising health care costs, increasing unfunded pension liabilities and by the phasing out of federal programs providing financial support. Where municipal securities are issued to finance particular projects, especially those relating to education, health care, transportation, housing, water or sewer and utilities, issuers often depend on revenues from those projects to make principal and interest payments. Adverse conditions and developments in those sectors can result in lower revenues to issuers of municipal securities, potentially resulting in defaults, and can also have an adverse effect on the broader municipal securities market. To the extent the Trust invests significantly in a single state, or in securities the payments on which are dependent upon a single project or source of revenues, or that relate to a sector or industry, including health care facilities, education, special revenues and housing, the Trust will be more susceptible to associated risks and developments.

There may be less public information available on municipal issuers or projects than other issuers, and valuing municipal securities may be more difficult. In addition, the secondary market for municipal securities is less well developed and liquid than other markets, and dealers may be less willing to offer and sell municipal securities in times of market turbulence. Changes in the financial condition of one or more individual municipal issuers (or one or more insurers of municipal issuers), or one or more defaults by municipal issuers or insurers, can adversely affect liquidity and valuations in the overall market for municipal securities. The value of municipal securities can also be adversely affected by regulatory and political developments affecting the ability of municipal issuers to pay interest or repay principal, actual or anticipated tax law changes or other legislative actions, and by uncertainties and public perceptions concerning these and other factors. Municipal securities may be more susceptible to downgrades or defaults during recessions or similar periods of economic stress. In recent years, an increasing number of municipal issuers in the United States have defaulted on obligations and commenced insolvency proceedings. Financial difficulties of municipal issuers may continue or get worse.

The rate of interest paid on municipal securities normally is lower than the rate of interest paid on fully taxable securities. Some municipal securities, such as general obligation issues, are backed by the issuer’s taxing authority, while other municipal securities, such as revenue issues, are backed only by revenues from certain facilities or other sources and not by the issuer itself. The payment of principal and interest on private activity and industrial development revenue bonds is solely dependent on the ability of the facility’s user to meet its financial obligations and the pledge, if any, of the facility or other property as security for payment.

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Taxable investment risk. Although distributions of interest income from the Trust’s tax-exempt securities are generally exempt from regular federal income tax, distributions from other sources, including capital gain distributions, and any gains on the sale of your shares are not. In addition, the interest on the Trust’s municipal securities could become subject to regular federal income tax or the AMT due to noncompliant conduct by issuers, unfavorable legislation or litigation, or adverse interpretations by regulatory authorities. You should consult a tax adviser about whether the AMT applies to you and about state and local taxes on your Trust distributions.

Risks of subordinated securities. A holder of securities that are subordinated or “junior” to more senior securities of an issuer is entitled to payment after holders of more senior securities of the issuer. Subordinated securities are more likely to suffer a credit loss than non-subordinated securities of the same issuer, any loss incurred by the subordinated securities is likely to be proportionately greater, and any recovery of interest or principal may take more time. As a result, even a perceived decline in creditworthiness of the issuer is likely to have a greater impact on subordinated securities than more senior securities.

U.S. Treasury obligations risk. The market value of direct obligations of the U.S. Treasury may vary due to changes in interest rates. In addition, changes to the financial condition or credit rating of the U.S. government may cause the value of the Trust’s investments in obligations issued by the U.S. Treasury to decline.

U.S. government agency obligations risk. The Trust invests in obligations issued by agencies and instrumentalities of the U.S. government. Government-sponsored entities such as FNMA, FHLMC and the FHLBs, although chartered or sponsored by Congress, are not funded by congressional appropriations and the debt and mortgage-backed securities issued by them are neither guaranteed nor issued by the U.S. government. The maximum potential liability of the issuers of some U.S. government obligations may greatly exceed their current resources, including any legal right to support from the U.S. government. Such debt and mortgage-backed securities are subject to the risk of default on the payment of interest and/or principal, similar to debt of private issuers. Although the U.S. government has provided financial support to FNMA and FHLMC in the past, there can be no assurance that it will support these or other government-sponsored entities in the future.

Mortgage-related and asset-backed securities risk. The value of mortgage-related and asset-backed securities will be influenced by factors affecting the assets underlying such securities. As a result, during periods of declining asset value, difficult or frozen credit markets, swings in interest

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rates, or deteriorating economic conditions, mortgage-related and asset-backed securities may decline in value, face valuation difficulties, become more volatile and/or become illiquid. Mortgage-backed securities tend to be more sensitive to changes in interest rate than other types of debt securities. These securities are also subject to prepayment and extension risks. Some of these securities may receive little or no collateral protection from the underlying assets and are thus subject to the risk of default. The risk of such defaults is generally higher in the case of mortgage-backed investments offered by non-governmental issuers and those that include so-called “sub-prime” mortgages. The structure of some of these securities may be complex and there may be less available information than for other types of debt securities. Upon the occurrence of certain triggering events or defaults, the Trust may become the holder of underlying assets at a time when those assets may be difficult to sell or may be sold only at a loss.

Risks of investing in collateralized debt obligations. Investment in a collateralized debt obligation (CDO) is subject to the credit, subordination, interest rate, valuation, prepayment, extension and other risks of the obligations underlying the CDO and the tranche of the CDO in which the Trust invests. CDOs are subject to liquidity risk. Synthetic CDOs are also subject to the risks of investing in derivatives, such as credit default swaps, and leverage risk.

Risks of instruments that allow for balloon payments or negative amortization payments. Certain debt instruments allow for balloon payments or negative amortization payments. Such instruments permit the borrower to avoid paying currently a portion of the interest accruing on the instrument. While these features make the debt instrument more affordable to the borrower in the near term, they increase the risk that the borrower will be unable to make the resulting higher payment or payments that become due at the maturity of the loan.

Risks of zero coupon bonds, payment in kind, deferred and contingent payment securities. These securities may be more speculative and may fluctuate more in value than securities which pay income periodically and in cash. In addition, although the Trust receives no periodic cash payments on such securities, the Trust is deemed for tax purposes to receive income from such securities, which applicable tax rules require the Trust to distribute to shareholders. Such distributions may be taxable when distributed to shareholders

Derivatives risk. Using swaps, forward foreign currency exchange contracts, bond and interest rate futures and other derivatives can increase Trust losses and reduce opportunities for gains when market prices, interest rates or the derivative instruments themselves behave in a way not anticipated by the Trust. Using derivatives may increase the volatility of the Trust’s net

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asset value and may not provide the result intended. Derivatives may have a leveraging effect on the Trust. Some derivatives have the potential for unlimited loss, regardless of the size of the Trust’s initial investment. Derivatives are generally subject to the risks applicable to the assets, rates, indices or other indicators underlying the derivative. Changes in a derivative’s value may not correlate well with the referenced asset or metric. The Trust also may have to sell assets at inopportune times to satisfy its obligations. Derivatives may be difficult to sell, unwind or value, and the counterparty may default on its obligations to the Trust. Use of derivatives may have different tax consequences for the Trust than an investment in the underlying security, and such differences may affect the amount, timing and character of income distributed to shareholders. The U.S. government and foreign governments are in the process of adopting and implementing regulations governing derivatives markets, including mandatory clearing of certain derivatives, margin and reporting requirements. The ultimate impact of the regulations remains unclear. Additional regulation of derivatives may make them more costly, limit their availability or utility, otherwise adversely affect their performance or disrupt markets.

Synthetic municipal securities risk. The tax-exempt character of the interest paid on tender option bonds, bond receipts and similar synthetic municipal securities, a type of derivative instrument, is based on the tax-exempt income stream from the collateral. In addition to the risks of investing in municipal securities and in derivatives generally, investments in synthetic municipal securities are subject to the risk that income derived from such securities is deemed to be taxable.

Risks of investing in inverse floating rate obligations. The interest rate on inverse floating rate obligations will generally decrease as short-term interest rates increase, and increase as short-term rates decrease. Due to their leveraged structure, the sensitivity of the market value of an inverse floating rate obligation to changes in interest rates is generally greater than a comparable long-term bond issued by the same issuer and with similar credit quality, redemption and maturity provisions. Inverse floating rate obligations may be volatile and involve leverage risk.

Credit default swap risk. Credit default swap contracts, a type of derivative instrument, involve special risks and may result in losses to the Trust. Credit default swaps may in some cases be illiquid, and they increase credit risk since the Trust has exposure to the issuer of the referenced obligation and either the counterparty to the credit default swap or, if it is a cleared transaction, the brokerage firm through which the trade was cleared and the clearing organization that is the counterparty to that trade.

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Structured securities risk. Structured securities may behave in ways not anticipated by the Trust, or they may not receive the tax, accounting or regulatory treatment anticipated by the Trust.

Leveraging risk. The value of your investment may be more volatile and other risks tend to be compounded if the Trust borrows or uses derivatives or other investments, such as ETFs, that have embedded leverage. Leverage generally magnifies the effect of any increase or decrease in the value of the Trust’s underlying assets and creates a risk of loss of value on a larger pool of assets than the Trust would otherwise have, potentially resulting in the loss of all assets. Engaging in such transactions may cause the Trust to liquidate positions when it may not be advantageous to do so to satisfy its obligations or meet segregation requirements.

The Trust may use financial leverage on an ongoing basis for investment purposes by issuing preferred shares. The fees and expenses attributed to leverage, including any increase in the management fees, will be borne by holders of common shares. Since the Adviser’s fee is based on a percentage of the Trust’s managed assets, its fee will be higher if the Trust is leveraged, and the Adviser will thus have an incentive to leverage the Trust.

Repurchase agreement risk. In the event that the other party to a repurchase agreement defaults on its obligations, the Trust may encounter delay and incur costs before being able to sell the security. Such a delay may involve loss of interest or a decline in price of the security. In addition, if the Trust is characterized by a court as an unsecured creditor, it would be at risk of losing some or all of the principal and interest involved in the transaction.

Market segment risk. To the extent the Trust emphasizes, from time to time, investments in a market segment, the Trust will be subject to a greater degree to the risks particular to that segment, and may experience greater market fluctuation than a fund without the same focus.

Valuation risk. The sales price the Trust could receive for any particular portfolio investment may differ from the Fund’s valuation of the investment, particularly for illiquid securities and securities that trade in thin or volatile markets or that are valued using a fair value methodology. These differences may increase significantly and affect Trust investments more broadly during periods of market volatility. The Fund’s ability to value its investments may also be impacted by technological issues and/or errors by pricing services or other third party service providers.

Cybersecurity risk. Cybersecurity failures by and breaches of the Fund’s adviser, transfer agent, custodian, Trust accounting agent or other service providers may disrupt Trust operations, interfere with the Fund’s ability to calculate its NAV, prevent Trust shareholders from purchasing or redeeming

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shares or receiving distributions, cause loss of or unauthorized access to private shareholder information, and result in financial losses to the Trust and its shareholders, regulatory fines, penalties, reputational damage, or additional compliance costs.

Cash management risk. The value of the investments held by the Trust for cash management or temporary defensive purposes may be affected by market risks, changing interest rates and by changes in credit ratings of the investments. To the extent that the Trust has any uninvested cash, the Trust would be subject to credit risk with respect to the depository institution holding the cash. If the Trust holds cash uninvested, the Trust will not earn income on the cash and the Trust’s yield will go down. During such periods, it may be more difficult for the Trust to achieve its investment objective.

Anti-takeover provisions. The Trust’s Articles of Incorporation and Bylaws include provisions that could limit the ability of other entities or persons to acquire control of the Trust or convert the Trust to open-end status. The Fund’s Bylaws also contain a provision providing that the Board of Directors has adopted a resolution to opt in the Fund to the provisions of the Maryland Control Share Acquisition Act (“MCSAA”). Such a provision may discourage third parties from seeking to obtain control of the Fund, which could have an adverse impact on the market price of the Fund’s shares. There can be no assurance, however, that such a provision will be sufficient to deter activist investors that seek to cause the Fund to take actions that may not be aligned with the interests of long-term shareholders.

Please note that there are many other factors that could adversely affect your investment and that could prevent the Trust from achieving its goals. An investment in the Trust is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

INVESTMENT RESTRICTIONS

The following are the Trust’s fundamental investment restrictions. These restrictions, along with the Trust’s investment objectives, may not be changed without the approval of the holders of a majority of the Trust’s outstanding voting securities (which for this purpose and under the 1940 Act means the lesser of (i) 67% of the common shares represented at a meeting at which more than 50% of the outstanding common shares are represented or (ii) more than 50% of the outstanding common shares).

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The Trust may not:

(1)  Issue senior securities, except as permitted by applicable law, as amended and interpreted or modified from time to time by any regulatory authority jurisdiction.

(2)  Borrow money, except as permitted by applicable law, as amended and interpreted or modified from time to time by any regulatory authority jurisdiction.

(3)  Invest in real estate, except the Trust may invest in securities of issuers that invest in real estate or interests therein, securities that are secured by real estate or interests therein, securities of real estate investment trusts, mortgage-backed securities and other securities that represent a similar indirect interest in real estate, and the Trust may acquire real estate or interests therein through exercising rights or remedies with regard to an instrument.

(4)  Make loans, except that the Trust may (i) lend portfolio securities in accordance with the Trust’s investment policies, (ii) enter into repurchase agreements, (iii) purchase all or a portion of an issue of publicly distributed debt securities, bank loan participation interests, bank certificates of deposit, acceptances, debentures or other securities, whether or not the purchase is made upon the original issuance of the securities, (iv) participate in a credit facility whereby the Trust may directly lend to and borrow money from other affiliated funds to the extent permitted under the 1940 Act or an exemption therefrom and (v) make loans in any other manner consistent with applicable law, as amended and interpreted or modified from time to time by any regulatory authority having jurisdiction.

(5)  Invest in commodities or commodity contracts, except that the Trust may invest in currency instruments and contracts and financial instruments and contracts that might be deemed to be commodities and commodity contracts.

(6)  Act as an underwriter, except insofar as the Trust technically may be deemed to be an underwriter in connection with the purchase or sale of its portfolio securities.

(7)  Make any investment inconsistent with its classification as a diversified closed-end investment company (or series thereof) under the 1940 Act.

70 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

(8)  Invest 25% or more of the value of its total assets in any one industry, provided that this limitation does not apply to municipal securities other than those municipal securities backed only by assets and revenues of non-governmental issuers.

(9)  Under normal market conditions, the Trust will invest substantially all (at least 80%) of its assets (net assets plus borrowings for investment purposes) in debt securities and other obligations issued by or on behalf of states, territories and possessions of the United States and the District of Columbia and their political subdivisions, agencies and instrumentalities, the interest on which is exempt from regular federal income tax.

All other investment policies of the Trust are considered non-fundamental and may be changed by the Board of Directors without prior approval of the Trust’s outstanding voting shares.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 71

EFFECTS OF LEVERAGE

The following table is furnished in response to requirements of the Securities and Exchange Commission. It is designed to illustrate the effects of leverage on common share total return, assuming investment portfolio total returns (consisting of income and changes in the value of investments held in the Trust’s portfolio) of -10%, -5%, 0%, 5% and 10%. The table below reflects the Trust’s borrowings under a credit agreement as a percentage of the Trust’s total assets (which includes the amounts of leverage obtained through such borrowings), the annual rate of interest on the borrowings as of March 31, 2021, and the annual return that the Trust’s portfolio must experience (net of expenses) in order to cover such costs. The information below does not reflect the Trust’s use of certain other forms of economic leverage achieved through the use of other instruments or transactions not considered to be senior securities under the 1940 Act, such as covered credit default swaps or other derivative instruments.

The assumed investment portfolio returns in the table below are hypothetical figures and are not necessarily indicative of the investment portfolio returns experienced or expected to be experienced by the Trust. Your actual returns may be greater or less than those appearing below. In addition, actual borrowing expenses associated with borrowings by the Trust may vary frequently and may be significantly higher or lower than the rate used for the example below.

Preferred Shares as a percentage of total managed assets
(including assets attributable to borrowings)	38.25	%
Annual effective interest rate payable by Trust on preferred Shares	1.12	%
Annual return Trust portfolio must experience (net of expenses) to cover interest
rate on preferred Shares	0.43	%
Common share total return for (10.00)% assumed portfolio total return	(16.89	)%
Common share total return for (5.00)% assumed portfolio total return	(8.79	)%
Common share total return for 0.00% assumed portfolio total return	(0.69	)%
Common share total return for 5.00% assumed portfolio total return	7.40	%
Common share total return for 10.00% assumed portfolio total return	15.50	%

Common share total return is composed of two elements - investment income net of the Trust’s expenses, including any interest/dividends on assets resulting from leverage, and gains or losses on the value of the securities the Trust owns. As required by Securities and Exchange Commission rules, the table assumes that the Trust is more likely to suffer capital losses than to enjoy capital appreciation. For example, to assume a total return of 0%, the Trust must assume that the income it receives on its investments is entirely offset by losses in the value of those investments.

72 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

This table reflects hypothetical performance of the Trust’s portfolio and not the performance of the Trust’s common shares, the value of which will be determined by market forces and other factors.

Should the Trust elect to add additional leverage to its portfolio, the potential benefits of leveraging the Trust’s shares cannot be fully achieved until the proceeds resulting from the use of leverage have been received by the Trust and invested in accordance with the Trust’s investment objective and principal investment strategies. The Trust’s willingness to use additional leverage, and the extent to which leverage is used at any time, will depend on many factors, including, among other things, the Adviser’s assessment of the yield curve environment, interest rate trends, market conditions and other factors.

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 73

 

Trustees, Officers and Service Providers


Investment Adviser and Administrator
Amundi Asset Management US, Inc.


Custodian and Sub-Administrator
Brown Brothers Harriman & Co.


Independent Registered Public Accounting Firm
Ernst & Young LLP


Legal Counsel
Morgan, Lewis, Bockius LLP


Transfer Agent
American Stock Transfer & Trust Company

Proxy Voting Policies and Procedures of the Trust are available without charge, upon request, by calling our toll free number (1-800-225-6292). Information regarding how the Trust voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at www.amundi.com/us. This information is also available on the Securities and Exchange Commission’s web site at www.sec.gov.

Trustees and Officers

The Fund’s Trustees and officers are listed below, together with their principal occupations and other directorships they have held during at least the past five years. Trustees who are interested persons of the Fund within the meaning of the 1940 Act are referred to as Interested Trustees. Trustees who are not interested persons of the Fund are referred to as Independent Trustees. Each of the Trustees serves as a Trustee of each of the 45 U.S. registered investment portfolios for which Amundi US serves as investment adviser (the “Pioneer Funds”). The address for all Trustees and all officers of the Fund is 60 State Street, Boston, Massachusetts 02109.

The Statement of Additional Information of the Trust includes additional information about the Trustees and is available, without charge, upon request, by calling 1-800-225-6292.

74 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

Independent Trustees

Name, Age and Position	Term of Office and		Other Directorships
Held With the Fund	Length of Service	Principal Occupation	Held by Trustee
Thomas J. Perna (70)	Class III Trustee since	Private investor (2004 – 2008 and 2013 – present); Chairman	Director, Broadridge Financial
Chairman of the Board	2006. Term expires	(2008 – 2013) and Chief Executive Officer (2008 – 2012), Quadriserv, Inc.	Solutions, Inc. (investor
and Trustee	in 2021.	(technology products for securities lending industry); and Senior	communications and securities
		Executive Vice President, The Bank of New York (financial and securities	processing provider for financial
		services) (1986 – 2004)	services industry) (2009 – present);
			Director, Quadriserv, Inc. (2005 –
			2013); and Commissioner, New
			Jersey State Civil Service
			Commission (2011 – 2015)
John E. Baumgardner,	Class I Trustee since	Of Counsel (2019 – present), Partner (1983-2018), Sullivan &	Chairman, The Lakeville Journal
Jr. (70)	2019. Term expires	Cromwell LLP (law firm).	Company, LLC, (privately-held
Trustee	in 2022.		community newspaper group)
			(2015-present)
Diane Durnin (64)	Class II Trustee since	Managing Director - Head of Product Strategy and Development, BNY	None
Trustee	2020. Term expires	Mellon Investment Management (investment management firm)
	in 2023.	(2012-2018); Vice Chairman – The Dreyfus Corporation (2005 – 2018):
		Executive Vice President Head of Product, BNY Mellon Investment
		Management (2007-2012); Executive Director- Product Strategy, Mellon
		Asset Management (2005-2007); Executive Vice President Head of Products,
		Marketing and Client Service, Dreyfus Corporation (investment management
		firm) (2000-2005); and Senior Vice President Strategic Product and
		Business Development, Dreyfus Corporation (1994-2000)

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 75

Independent Trustees (continued)

Name, Age and Position	Term of Office and		Other Directorships
Held With the Fund	Length of Service	Principal Occupation	Held by Trustee
Benjamin M. Friedman (76)	Class II Trustee since	William Joseph Maier Professor of Political Economy, Harvard	Trustee, Mellon Institutional Funds
Trustee	2008. Term expires	University (1972 – present)	Investment Trust and Mellon
	in 2023.		Institutional Funds Master Portfolio
			(oversaw 17 portfolios in fund
			complex) (1989 - 2008)
Craig C. MacKay (58)*	Class III Trustee since	Partner, England & Company, LLC (advisory firm) (2012 – present);	Board Member of Carver Bancorp,
Trustee	2021. Term expires	Group Head – Leveraged Finance Distribution, Oppenheimer & Company	Inc. (holding company) and Carver
	in 2021.	(investment bank) (2006 – 2012); Group Head – Private Finance & High	Federal Savings Bank, NA (2017 –
		Yield Capital Markets Origination, SunTrust Robinson Humphrey	present); Advisory Council Member,
		(investment bank) (2003 – 2006); and Founder and Chief Executive Officer,	MasterShares ETF (2016 – 2017);
		HNY Associates, LLC (investment bank) (1996 – 2003)	Advisory Council Member, The Deal
			(financial market information
			publisher) (2015 – 2016); Board
			Co-Chairman and Chief Executive
			Officer, Danis Transportation
			Company (privately-owned
			commercial carrier) (2000 – 2003);
			Board Member and Chief Financial
			Officer, Customer Access Resources
			(privately-owned teleservices
			company) (1998 – 2000); Board
			Member, Federation of Protestant
			Welfare Agencies (human services
			agency) (1993 – present); and
			Board Treasurer, Harlem Dowling
			Westside Center (foster care
			agency) (1999 – 2018)

*      Mr. MacKay was appointed as a Trustee effective March 22, 2021.

76 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

Name, Age and Position	Term of Office and		Other Directorships
Held With the Fund	Length of Service	Principal Occupation	Held by Trustee
Lorraine H. Monchak (64)	Class I Trustee since	Chief Investment Officer, 1199 SEIU Funds (healthcare workers union	None
Trustee	2015. Term expires	pension funds) (2001 – present); Vice President – International Investments
	in 2022.	Group, American International Group, Inc. (insurance company)
		(1993 – 2001); Vice President – Corporate Finance and Treasury Group,
		Citibank, N.A. (1980 – 1986 and 1990 – 1993); Vice President – Asset/Liability
		Management Group, Federal Farm Funding Corporation (government-
		sponsored issuer of debt securities) (1988 – 1990); Mortgage Strategies
		Group, Shearson Lehman Hutton, Inc. (investment bank) (1987 – 1988); and
		Mortgage Strategies Group, Drexel Burnham Lambert, Ltd. (investment
		bank) (1986 – 1987)
Marguerite A. Piret (72)	Class III Trustee since	Chief Financial Officer, American Ag Energy, Inc. (controlled environment	Director of New America High
Trustee	2003. Term expires	and agriculture company) (2016 – present); and President and Chief	Income Fund, Inc. (closed-end
	in 2021. Elected by	Executive Officer, Metric Financial Inc. (formerly known as Newbury Piret	investment company) (2004 –
	Preferred Shares only.	Company) (investment banking firm) (1981 – 2019)	present); and Member, Board of
			Governors, Investment Company
			Institute (2000 – 2006)
Fred J. Ricciardi (74)	Class III Trustee since	Private investor (2020 – present); Consultant (investment company	None
Trustee	2014. Term expires	services) (2012 – 2020); Executive Vice President, BNY Mellon (financial
	in 2021.	and investment company services) (1969 – 2012); Director, BNY
		International Financing Corp. (financial services) (2002 – 2012); Director,
		Mellon Overseas Investment Corp. (financial services) (2009 – 2012);
		Director, Financial Models (technology) (2005-2007); Director, BNY
		Hamilton Funds, Ireland (offshore investment companies) (2004-2007);
		Chairman/Director, AIB/BNY Securities Services, Ltd., Ireland (financial
		services) (1999-2006); and Chairman, BNY Alternative Investment Services,
		Inc. (financial services) (2005-2007)

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 77

 

Interested Trustees

Name, Age and Position	Term of Office and		Other Directorships
Held With the Fund	Length of Service	Principal Occupation	Held by Trustee
Lisa M. Jones (59)**	Class I Trustee since	Director, CEO and President of Amundi US, Inc. (investment management	None
Trustee, President and	2014. Term expires	firm) (since September 2014); Director, CEO and President of Amundi Asset
Chief Executive Officer	in 2022.	Management US, Inc. (since September 2014); Director, CEO and President
		of Amundi Distributor US, Inc. (since September 2014); Director, CEO and
		President of Amundi Asset Management US, Inc. (since September 2014);
		Chair, Amundi US, Inc., Amundi Distributor US, Inc. and Amundi Asset
		Management US, Inc. (September 2014 – 2018); Managing Director,
		Morgan Stanley Investment Management (investment management firm)
		(2010 – 2013); Director of Institutional Business, CEO of International,
		Eaton Vance Management (investment management firm) (2005 – 2010);
		and Director of Amundi Holdings US, Inc. (since 2017)
Kenneth J. Taubes (62)**	Class II Trustee since	Director and Executive Vice President (since 2008) and Chief Investment	None
Trustee	2014. Term expires	Officer, U.S. (since 2010) of Amundi US, Inc. (investment management firm);
	in 2023.	Director and Executive Vice President and Chief Investment Officer, U.S. of
		Amundi US (since 2008); Executive Vice President and Chief Investment
		Officer, U.S. of Amundi Asset Management US, Inc. (since 2009); Portfolio
		Manager of Amundi US (since 1999); and Director of Amundi Holdings
		US, Inc. (since 2017)

**      Ms. Jones and Mr. Taubes are Interested Trustees because they are officers or directors of the Fund’s investment adviser and certain of its affiliates.

78 Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21

Fund Officers

Name, Age and Position	Term of Office and		Other Directorships
Held With the Fund	Length of Service	Principal Occupation	Held by Officer
Christopher J. Kelley (56)	Since 2003. Serves	Vice President and Associate General Counsel of Amundi US since	None
Secretary and Chief	at the discretion of	January 2008; Secretary and Chief Legal Officer of all of the Pioneer Funds
Legal Officer	the Board	since June 2010; Assistant Secretary of all of the Pioneer Funds from
		September 2003 to May 2010; and Vice President and Senior Counsel of
		Amundi US from July 2002 to December 2007
Carol B. Hannigan (60)	Since 2010. Serves	Fund Governance Director of Amundi US since December 2006 and	None
Assistant Secretary	at the discretion of	Assistant Secretary of all the Pioneer Funds since June 2010; Manager –
	the Board	Fund Governance of Amundi US from December 2003 to November 2006;
		and Senior Paralegal of Amundi US from January 2000 to November 2003
Thomas Reyes (58)	Since 2010. Serves	Assistant General Counsel of Amundi US since May 2013 and Assistant	None
Assistant Secretary	at the discretion of	Secretary of all the Pioneer Funds since June 2010; and Counsel of
	the Board	Amundi US from June 2007 to May 2013
Anthony J. Koenig, Jr. (57)	Since 2021. Serves	Senior Vice President – Fund Treasury of Amundi US; Treasurer of all of	None
Treasurer and Chief	at the discretion of	the Pioneer Funds since May 2021; Assistant Treasurer of all of the Pioneer
Financial and	the Board	Funds from January 2021 to May 2021; and Chief of Staff, US Investment
Accounting Officer		Management of Amundi US from May 2008 to January 2021
Luis I. Presutti (55)	Since 2003. Serves	Director – Fund Treasury of Amundi US since 1999; and Assistant	None
Assistant Treasurer	at the discretion of	Treasurer of all of the Pioneer Funds since 1999
	the Board
Gary Sullivan (62)	Since 2003. Serves	Senior Manager – Fund Treasury of Amundi US since 2012; and Assistant	None
Assistant Treasurer	at the discretion of	Treasurer of all of the Pioneer Funds since 2002
	the Board

Pioneer Municipal High Income Advantage Trust | Annual Report | 3/31/21 79

Fund Officers (continued)

Name, Age and Position	Term of Office and		Other Directorships
Held With the Fund	Length of Service	Principal Occupation	Held by Officer
Antonio Furtado (38)	Since 2020. Serves	Fund Oversight Manager – Fund Treasury of Amundi US since 2020;	None
Assistant Treasurer	at the discretion of	Assistant Treasurer of all of the Pioneer Funds since 2020; and Senior
	the Board	Fund Treasury Analyst from 2012 - 2020
John Malone (50)	Since 2018. Serves	Managing Director, Chief Compliance Officer of Amundi US Asset	None
Chief Compliance Officer	at the discretion of	Management; Amundi Asset Management US, Inc.; and the Pioneer
	the Board	Funds since September 2018; and Chief Compliance Officer of Amundi
		Distributor US, Inc. since January 2014.
Kelly O’Donnell (50)	Since 2006. Serves	Vice President – Amundi Asset Management; and Anti-Money Laundering	None
Anti-Money	at the discretion of	Officer of all the Pioneer Funds since 2006
Laundering Officer	the Board

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How to Contact Amundi

We are pleased to offer a variety of convenient ways for you to contact us for assistance or information.

You can call American Stock Transfer & Trust Company (AST) for:

Account Information	1-800-710-0935
Or write to AST:
For	Write to
General inquiries, lost dividend checks,	American Stock
change of address, lost stock certificates,	Transfer & Trust
stock transfer	Operations Center
	6201 15th Ave.
	Brooklyn, NY 11219
Dividend reinvestment plan (DRIP)	American Stock
	Transfer & Trust
	Wall Street Station
	P.O. Box 922
	New York, NY 10269-0560
Website	www.amstock.com

For additional information, please contact your investment advisor or visit our web site www.amundi.com/us.

The Trust files a complete schedule of portfolio holdings with the Securities and Exchange Commission for the first and third quarters of each fiscal year as an exhibit to its reports on Form N-PORT. Shareowners may view the filed Form N-PORT by visiting the Commission’s web site at https://www.sec.gov.

Amundi Asset Management US, Inc.
60 State Street
Boston, MA 02109
www.amundi.com/us

© 2021 Amundi Asset Management US, Inc. 19205-15-0521 

ITEM 2. CODE OF ETHICS.

(a) Disclose whether, as of the end of the period covered by the report, the registrant has adopted a code of ethics that applies to the registrant’s principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party.  If the registrant has not adopted such a code of ethics, explain why it has not done so.

The registrant has adopted, as of the end of the period covered by this report, a code of ethics that applies to the registrant’s principal executive officer, principal financial officer, principal accounting officer and controller.

(b) For purposes of this Item, the term “code of ethics” means written standards that are reasonably designed to deter wrongdoing and to promote:

(1) Honest and ethical conduct, including the ethical handling of actual or apparent conflicts of interest between personal and professional relationships;

(2) Full, fair, accurate, timely, and understandable disclosure in reports and documents that a registrant files with, or submits to, the Commission and in other public communications made by the registrant;

(3) Compliance with applicable governmental laws, rules, and regulations;

(4) The prompt internal reporting of violations of the code to an appropriate person or persons identified in the code; and

(5) Accountability for adherence to the code.

(c) The registrant must briefly describe the nature of any amendment, during the period covered by the report, to a provision of its code of ethics that applies to the registrant’s principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party, and that relates to any element of the code of ethics definition enumerated in paragraph (b) of this Item. The registrant must file a copy of any such amendment as an exhibit pursuant to Item 10(a), unless the registrant has elected to satisfy paragraph (f) of this Item by posting its code of ethics on its website pursuant to paragraph (f)(2) of this Item, or by undertaking to provide its code of ethics to any person without charge, upon request, pursuant to paragraph (f)(3) of this Item.

The registrant has made no amendments to the code of ethics during the period covered by this report.

(d) If the registrant has, during the period covered by the report, granted a waiver, including an implicit waiver, from a provision of the code of ethics to the registrant’s principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party, that relates to one or more of the items set forth in paragraph (b) of this Item, the registrant must briefly describe the nature of the waiver, the name of the person to whom the waiver was granted, and the date of the waiver.

Not applicable.

(e) If the registrant intends to satisfy the disclosure requirement under paragraph (c) or (d) of this Item regarding an amendment to, or a waiver from, a provision of its code of ethics that applies to the registrant’s principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions and that relates to any element of the code of ethics definition enumerated in paragraph (b) of this Item by posting such information on its Internet website, disclose the registrant’s Internet address and such intention.

Not applicable.

(f) The registrant must:

(1) File with the Commission, pursuant to Item 12(a)(1), a copy of its code of ethics that applies to the registrant’s principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, as an exhibit to its annual report on this Form N-CSR (see attachment);

(2) Post the text of such code of ethics on its Internet website and disclose, in its most recent report on this Form N-CSR, its Internet address and the fact that it has posted such code of ethics on its Internet website; or

(3) Undertake in its most recent report on this Form N-CSR to provide to any person without charge, upon request, a copy of such code of ethics and explain the manner in which such request may be made. See Item 10(2)

ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT.

(a) (1)  Disclose that the registrant’s board of trustees has determined that the registrant either:

(i)  Has at least one audit committee financial expert serving on its audit committee; or

(ii) Does not have an audit committee financial expert serving on its audit committee.

The registrant’s Board of Trustees has determined that the registrant has at least one audit committee financial expert.

      (2) If the registrant provides the disclosure required by paragraph (a)(1)(i) of this Item, it must disclose the name of the audit committee financial expert and whether that person is “independent.” In order to be considered “independent” for purposes of this Item, a member of an audit committee may not, other than in his or her capacity as a member of the audit committee, the board of trustees, or any other board committee:

(i)  Accept directly or indirectly any consulting, advisory, or other compensatory fee from the issuer; or

(ii) Be an “interested person” of the investment company as defined in Section 2(a)(19) of the Act (15 U.S.C. 80a-2(a)(19)).

Mr. Fred J. Ricciardi, an independent trustee, is such an audit committee financial expert.

(3) If the registrant provides the disclosure required by paragraph (a)(1) (ii) of this Item, it must explain why it does not have an audit committee financial expert.

Not applicable.

ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES.

(a) Disclose, under the caption AUDIT FEES, the aggregate fees billed for each of the last two fiscal years for professional services rendered by the principal accountant for the audit of the registrant’s annual financial statements or services that are normally provided by the accountant in connection with statutory and regulatory filings or engagements for those fiscal years.

The audit fees for the Trust were $42,330 payable to Ernst & Young LLP for the year ended March 31, 2021 and $41,500 for the year ended March 31, 2020.

(b) Disclose, under the caption AUDIT-RELATED FEES, the aggregate fees billed in each of the last two fiscal years for assurance and related services by the principal accountant that are reasonably related to the performance of the audit of the registrant’s financial statements and are not reported under paragraph (a) of this Item. Registrants shall describe the nature of the services comprising the fees disclosed under this category.

There were no audit-related services in 2021 or 2020.

(c) Disclose, under the caption TAX FEES, the aggregate fees billed in each of the last two fiscal years for professional services rendered by the principal accountant for tax compliance, tax advice, and tax planning. Registrants shall describe the nature of the services comprising the fees disclosed under this category.

The Trust paid aggregate non-audit fees to Ernst & Young LLP for tax services of $9,934 and $9,739 during the fiscal years ended March 31, 2021 and 2020, respectively.

(d) Disclose, under the caption ALL OTHER FEES, the aggregate fees billed in each of the last two fiscal years for products and services provided by the principal accountant, other than the services reported in paragraphs (a) through (c) of this Item. Registrants shall describe the nature of the services comprising the fees disclosed under this category.

There were no other fees in 2021 or 2020.

(e) (1) Disclose the audit committee’s pre-approval policies and procedures described in paragraph (c)(7) of Rule 2-01 of Regulation S-X.

PIONEER FUNDS

APPROVAL OF AUDIT, AUDIT-RELATED, TAX AND OTHER SERVICES

PROVIDED BY THE INDEPENDENT AUDITOR

SECTION I - POLICY PURPOSE AND APPLICABILITY

The Pioneer Funds recognize the importance of maintaining the independence of their outside auditors. Maintaining independence is a shared responsibility involving Amundi Asset Management, Inc, the audit committee and the independent auditors.

The Funds recognize that a Fund’s independent auditors: 1) possess knowledge of the Funds, 2) are able to incorporate certain services into the scope of the audit, thereby avoiding redundant work, cost and disruption of Fund personnel and processes, and 3) have expertise that has value to the Funds. As a result, there are situations where it is desirable to use the Fund’s independent auditors for services in addition to the annual audit and where the potential for conflicts of interests are minimal. Consequently, this policy, which is intended to comply with Rule 210.2-01(C)(7), sets forth guidelines and procedures to be followed by the Funds when retaining the independent audit firm to perform audit, audit-related tax and other services under those circumstances, while also maintaining independence.

Approval of a service in accordance with this policy for a Fund shall also constitute approval for any other Fund whose pre-approval is required pursuant to Rule 210.2-01(c)(7)(ii).

In addition to the procedures set forth in this policy, any non-audit services that may be provided consistently with Rule 210.2-01 may be approved by the Audit Committee itself and any pre-approval that may be waived in accordance with Rule 210.2-01(c)(7)(i)(C) is hereby waived.

Selection of a Fund’s independent auditors and their compensation shall be determined by the Audit Committee and shall not be subject to this policy.

SECTION II - POLICY
SERVICE CATEGORY	SERVICE CATEGORY DESCRIPTION	SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES
I. AUDIT SERVICES	Services that are directly	o Accounting research assistance
	related to performing the	o SEC consultation, registration
	independent audit of the Funds	statements, and reporting
		o Tax accrual related matters
		o Implementation of new accounting standards
		o Compliance letters (e.g. rating agency letters)
		o Regulatory reviews and assistance
		regarding financial matters
		o Semi-annual reviews (if requested)
		o Comfort letters for closed end offerings
II. AUDIT-RELATED	Services which are not	o AICPA attest and agreed-upon procedures
SERVICES	prohibited under Rule	o Technology control assessments
	210.2-01(C)(4) (the “Rule”)	o Financial reporting control assessments
	and are related extensions of	o Enterprise security architecture
	the audit services support the	assessment
	audit, or use the knowledge/expertise
	gained from the audit procedures as a
	foundation to complete the project.
	In most cases, if the Audit-Related
	Services are not performed by the
	Audit firm, the scope of the Audit
	Services would likely increase.
	The Services are typically well-defined
	and governed by accounting
	professional standards (AICPA,
	SEC, etc.)
AUDIT COMMITTEE APPROVAL POLICY		AUDIT COMMITTEE REPORTING POLICY
o “One-time” pre-approval		o A summary of all such
for the audit period for all		services and related fees
pre-approved specific service		reported at each regularly
subcategories. Approval of the		scheduled Audit Committee
independent auditors as		meeting.
auditors for a Fund shall
constitute pre approval for
these services.
o “One-time” pre-approval		o A summary of all such
for the fund fiscal year within		services and related fees
a specified dollar limit		(including comparison to
for all pre-approved		specified dollar limits)
specific service subcategories		reported quarterly.
o Specific approval is
needed to exceed the
pre-approved dollar limit for
these services (see general
Audit Committee approval policy

below for details on obtaining 

specific approvals) 

o Specific approval is 

needed to use the Fund’s 

auditors for Audit-Related 

Services not denoted as 

“pre-approved”, or 

to add a specific service 

subcategory as “pre-approved” 

SECTION III - POLICY DETAIL, CONTINUED

SERVICE CATEGORY	SERVICE CATEGORY DESCRIPTION	SPECIFIC PRE-APPROVED SERVICE
		SUBCATEGORIES
III. TAX SERVICES	Services which are not	o Tax planning and support
	prohibited by the Rule,	o Tax controversy assistance
	if an officer of the Fund	o Tax compliance, tax returns, excise
	determines that using the	tax returns and support
	Fund’s auditor to provide	o Tax opinions
	these services creates
	significant synergy in
	the form of efficiency,
	minimized disruption, or
	the ability to maintain a
	desired level of
	confidentiality.

AUDIT COMMITTEE APPROVAL POLICY	AUDIT COMMITTEE REPORTING POLICY
o “One-time” pre-approval	o A summary of
for the fund fiscal year	all such services and
within a specified dollar limit	related fees
	(including comparison
	to specified dollar
	limits) reported
	quarterly.
o Specific approval is
needed to exceed the
pre-approved dollar limits for
these services (see general
Audit Committee approval policy
below for details on obtaining
specific approvals)
o Specific approval is
needed to use the Fund’s
auditors for tax services not
denoted as pre-approved, or to
add a specific service subcategory as
“pre-approved”

SECTION III - POLICY DETAIL, CONTINUED

SERVICE CATEGORY	SERVICE CATEGORY DESCRIPTION	SPECIFIC PRE-APPROVED SERVICE
		SUBCATEGORIES
IV. OTHER SERVICES	Services which are not	o Business Risk Management support
	prohibited by the Rule,	o Other control and regulatory
A. SYNERGISTIC,	if an officer of the Fund	compliance projects
UNIQUE QUALIFICATIONS	determines that using the
	Fund’s auditor to provide
	these services creates
	significant synergy in
	the form of efficiency,
	minimized disruption,
	the ability to maintain a
	desired level of
	confidentiality, or where
	the Fund’s auditors
	posses unique or superior
	qualifications to provide
	these services, resulting
	in superior value and
	results for the Fund.

AUDIT COMMITTEE APPROVAL POLICY	AUDIT COMMITTEE REPORTING POLICY
o “One-time” pre-approval	o A summary of
for the fund fiscal year within	all such services and
a specified dollar limit	related fees
	(including comparison
	to specified dollar
	limits) reported
	quarterly.
o Specific approval is
needed to exceed the
pre-approved dollar limits for
these services (see general
Audit Committee approval policy
below for details on obtaining
specific approvals)
o Specific approval is
needed to use the Fund’s
auditors for “Synergistic” or
“Unique Qualifications” Other
Services not denoted as
pre-approved to the left, or to
add a specific service
subcategory as “pre-approved”

SECTION III - POLICY DETAIL, CONTINUED

SERVICE CATEGORY	SERVICE CATEGORY DESCRIPTION	SPECIFIC PROHIBITED SERVICE
		SUBCATEGORIES
PROHIBITED SERVICES	Services which result	1. Bookkeeping or other services
	in the auditors losing	related to the accounting records or
	independence status	financial statements of the audit
	under the Rule.	client*
		2. Financial information systems design
		and implementation*
		3. Appraisal or valuation services,
		fairness* opinions, or
		contribution-in-kind reports
		4. Actuarial services (i.e., setting
		actuarial reserves versus actuarial
		audit work)*
		5. Internal audit outsourcing services*
		6. Management functions or human
		resources
		7. Broker or dealer, investment
		advisor, or investment banking services
		8. Legal services and expert services
		unrelated to the audit
		9. Any other service that the Public
		Company Accounting Oversight Board
		determines, by regulation, is
		impermissible

AUDIT COMMITTEE APPROVAL POLICY	AUDIT COMMITTEE REPORTING POLICY
o These services are not to be	o A summary of all
performed with the exception of the(*)	services and related
services that may be permitted	fees reported at each
if they would not be subject to audit	regularly scheduled
procedures at the audit client (as	Audit Committee meeting
defined in rule 2-01(f)(4)) level	will serve as continual
the firm providing the service.	confirmation that has
	not provided any
	restricted services.

GENERAL AUDIT COMMITTEE APPROVAL POLICY:

o For all projects, the officers of the Funds and the Fund’s auditors will each make an assessment to determine that any proposed projects will not impair independence.

o Potential services will be classified into the four non-restricted service categories and the “Approval of Audit, Audit-Related, Tax and Other Services” Policy above will be applied. Any services outside the specific pre-approved service subcategories set forth above must be specifically approved by the Audit Committee.

o At least quarterly, the Audit Committee shall review a report summarizing the services by service category, including fees, provided by the Audit firm as set forth in the above policy.

(2) Disclose the percentage of services described in each of paragraphs (b) through (d) of this Item that were approved by the audit committee pursuant to paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X.

Non-Audit Services

Beginning with non-audit service contracts entered into on or after May 6, 2003, the effective date of the

new SEC pre-approval rules, the Trust’s audit committee is required to pre-approve services to

affiliates defined by SEC rules to the extent that the services are determined to have a direct impact on the operations or financial reporting of the Trust.  For the years ended March 31 2021, and 2020, there were no services provided to an affiliate that required the Trust’s audit committee pre-approval.

(f) If greater than 50 percent, disclose the percentage of hours expended on the principal accountants engagement to audit the registrant’s financial statements for the most recent fiscal year that were attributed to work performed by persons other than the principal accountant’s full-time, permanent employees.

N/A

(g) Disclose the aggregate non-audit fees billed by the registrants accountant for services rendered to the registrant, and rendered to the registrants investment adviser (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant for each of the last two fiscal years of the registrant.

The Trust paid aggregate non-audit fees to Ernst & Young LLP for tax services of $9,934 and $9,739 during the fiscal years ended March 31, 2021 and 2020, respectively.

(h) Disclose whether the registrants audit committee of the board of trustees has considered whether the provision of non-audit services that were rendered to the registrants investment adviser (not including any subadviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the registrant that were not pre-approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant’s independence.

The Fund’s audit committee of the Board of Trustees has considered whether the provision of non-audit services that were rendered to the Affiliates (as defined) that were not pre- approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant’s independence.

ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS

(a) If the registrant is a listed issuer as defined in Rule 10A-3 under the Exchange Act (17 CFR 240.10A-3), state whether or not the registrant has a separately-designated standing audit committee established in accordance with Section 3(a)(58)(A) of the Exchange Act (15 U.S.C. 78c(a)(58)(A)). If the registrant has such a committee, however designated, identify each committee member. If the entire board of directors is acting as the registrant’s audit committee as specified in Section 3(a)(58)(B) of the Exchange Act (15 U.S.C. 78c(a)(58)(B)), so state.

N/A

(b) If applicable, provide the disclosure required by Rule 10A-3(d) under the Exchange Act (17 CFR 240.10A-3(d)) regarding an exemption from the listing standards for audit committees.

N/A

ITEM 6. SCHEDULE OF INVESTMENTS.

File Schedule of Investments in securities of unaffiliated issuers as of the close of the reporting period as set forth in 210.1212 of Regulation S-X [17 CFR 210.12-12], unless the schedule is included as part of the report to shareholders filed under Item 1 of this Form.

Included in Item 1

ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

A closed-end management investment company that is filing an annual report on this Form N-CSR must, unless it invests exclusively in non-voting securities, describe the policies and procedures that it uses to determine how to vote proxies relating to portfolio securities, including the procedures that the company uses when a vote presents a conflict between the interests of its shareholders, on the one hand, and those of the company’s investment adviser; principal underwriter; or any affiliated person (as defined in Section 2(a)(3) of the Investment Company Act of 1940 (15 U.S.C. 80a-2(a)(3)) and the rules thereunder) of the company, its investment adviser, or its principal underwriter, on the other. Include any policies and procedures of the company’s investment adviser, or any other third party, that the company uses, or that are used on the company’s behalf, to determine how to vote proxies relating to portfolio securities.

Proxy Voting Policies and Procedures of

                       Pioneer Investment Management, Inc.

                            VERSION DATED July, 2004

                                    Overview

   Pioneer Investment Management, Inc. (“Pioneer”) is a fiduciary that owes

   each of its client’s duties of care and loyalty with respect to all

   services undertaken on the client’s behalf, including proxy voting. When

   Pioneer has been delegated proxy-voting authority for a client, the duty of

   care requires Pioneer to monitor corporate events and to vote the proxies.

   To satisfy its duty of loyalty, Pioneer must place its client’s interests

   ahead of its own and must cast proxy votes in a manner consistent with the

   best interest of its clients. Pioneer will vote all proxies presented in a

   timely manner.

   The Proxy Voting Policies and Procedures are designed to complement

   Pioneer’s investment policies and procedures regarding its general

   responsibility to monitor the performance and/or corporate events of

   companies that are issuers of securities held in accounts managed by

   Pioneer. Pioneer’s Proxy Voting Policies summarize Pioneer’s position on a

   number of issues solicited by companies held by Pioneer’s clients. The

   policies are guidelines that provide a general indication on how Pioneer

   would vote but do not include all potential voting scenarios.

   Pioneer’s Proxy Voting Procedures detail monitoring of voting, exception

   votes, and review of conflicts of interest and ensure that case-by-case

   votes are handled within the context of the overall guidelines (i.e. best

   interest of client). The overriding goal is that all proxies for US and

   non-US companies that are received promptly will be voted in accordance

   with Pioneer’s policies or specific client instructions. All shares in a

   company held by Pioneer-managed accounts will be voted alike, unless a

   client has given us specific voting instructions on an issue or has not

   delegated authority to us or the Proxy Voting Oversight Group determines

   that the circumstances justify a different approach.

   Pioneer does not delegate the authority to vote proxies relating to its

   clients to any of its affiliates, which include other subsidiaries of

   UniCredito.

   Any questions about these policies and procedures should be directed to the

   Proxy Coordinator.

                                       1

                             Proxy Voting Procedures

   Proxy Voting Service

   Pioneer has engaged an independent proxy voting service to assist in the

   voting of proxies. The proxy voting service works with custodians to ensure

   that all proxy materials are received by the custodians and are processed

   in a timely fashion. To the extent applicable, the proxy voting service

   votes all proxies in accordance with the proxy voting policies established

   by Pioneer. The proxy voting service will refer proxy questions to the

   Proxy Coordinator (described below) for instructions under circumstances

   where: (1) the application of the proxy voting guidelines is unclear; (2) a

   particular proxy question is not covered by the guidelines; or (3) the

   guidelines call for specific instructions on a case-by-case basis. The

   proxy voting service is also requested to call to the Proxy Coordinator’s

   attention specific proxy questions that, while governed by a guideline,

   appear to involve unusual or controversial issues. Pioneer reserves the

   right to attend a meeting in person and may do so when it determines that

   the company or the matters to be voted on at the meeting are strategically

   important to its clients.

   Proxy Coordinator

   Pioneer’s Director of Investment Operations (the “Proxy Coordinator”)

   coordinates the voting, procedures and reporting of proxies on behalf of

   Pioneer’s clients. The Proxy Coordinator will deal directly with the proxy

   voting service and, in the case of proxy questions referred by the proxy

   voting service, will solicit voting recommendations and instructions from

   the Director of Portfolio Management US or, to the extent applicable,

   investment sub-advisers. The Proxy Coordinator is responsible for ensuring

   that these questions and referrals are responded to in a timely fashion and

   for transmitting appropriate voting instructions to the proxy voting

   service. The Proxy Coordinator is responsible for verifying with the

   Compliance Department whether Pioneer’s voting power is subject to any

   limitations or guidelines issued by the client (or in the case of an

   employee benefit plan, the plan’s trustee or other fiduciaries).

   Referral Items

   From time to time, the proxy voting service will refer proxy questions to

   the Proxy Coordinator that are described by Pioneer’s policy as to be voted

   on a case-by-case basis, that are not covered by Pioneer’s guidelines or

   where Pioneer’s guidelines may be unclear with respect to the matter to be

   voted on. Under such certain circumstances, the Proxy Coordinator will seek

   a written voting recommendation from the Director of Portfolio Management

   US. Any such recommendation will include: (i) the manner in which the

   proxies should be voted; (ii) the rationale underlying any such decision;

   and (iii) the disclosure of any contacts or communications made between

   Pioneer and any outside parties concerning the proxy proposal prior to the

   time that the voting instructions are provided. In addition, the Proxy

   Coordinator will ask the Compliance Department to review the question for

   any actual or apparent conflicts of interest as described below under

   “Conflicts of

                                       2

   Interest.” The Compliance Department will provide a “Conflicts of Interest

   Report,” applying the criteria set forth below under “Conflicts of

   Interest,” to the Proxy Coordinator summarizing the results of its review.

   In the absence of a conflict of interest, the Proxy Coordinator will vote

   in accordance with the recommendation of the Director of Portfolio

   Management US.

   If the matter presents a conflict of interest for Pioneer, then the Proxy

   Coordinator will refer the matter to the Proxy Voting Oversight Group for a

   decision. In general, when a conflict of interest is present, Pioneer will

   vote according to the recommendation of the Director of Portfolio

   Management US where such recommendation would go against Pioneer’s interest

   or where the conflict is deemed to be immaterial. Pioneer will vote

   according to the recommendation of its proxy voting service when the

   conflict is deemed to be material and the Pioneer’s internal vote

   recommendation would favor Pioneer’s interest, unless a client specifically

   requests Pioneer to do otherwise. When making the final determination as to

   how to vote a proxy, the Proxy Voting Oversight Group will review the

   report from the Director of Portfolio Management US and the Conflicts of

   Interest Report issued by the Compliance Department.

   Conflicts of Interest

   A conflict of interest occurs when Pioneer’s interests interfere, or appear

   to interfere with the interests of Pioneer’s clients. Occasionally, Pioneer

   may have a conflict that can affect how its votes proxies. The conflict may

   be actual or perceived and may exist when the matter to be voted on

   concerns:

       o      An affiliate of Pioneer,  such as another company  belonging to

              the UniCredito  Italiano  S.p.A.  banking group (a “UniCredito

              Affiliate”);

       o      An issuer of a security for which Pioneer acts as a sponsor,

              advisor, manager, custodian, distributor, underwriter, broker, or

              other similar capacity (including those securities specifically

              declared by PGAM to present a conflict of interest for Pioneer);

       o      An issuer of a security for which UniCredito has informed Pioneer

              that a UniCredito Affiliate acts as a sponsor, advisor, manager,

              custodian, distributor, underwriter, broker, or other similar

              capacity; or

       o      A person with whom Pioneer (or any of its affiliates) has an

              existing, material contract or business relationship that was not

              entered into in the ordinary course of Pioneer’s business.

       o      Pioneer will abstain from voting with respect to companies

              directly or indirectly owned by UniCredito Italiano Group, unless

              otherwise directed by a client. In addition, Pioneer will inform

              PGAM Global Compliance and the PGAM Independent Directors before

              exercising such rights.

   Any associate involved in the proxy voting process with knowledge of any

   apparent or actual conflict of interest must disclose such conflict to the

   Proxy Coordinator and the Compliance Department. The Compliance Department

   will review each item referred to Pioneer to determine whether an actual or

   potential conflict of interest with Pioneer exists in connection with the

   proposal(s) to be voted upon. The review will be conducted by comparing the

   apparent parties affected by the proxy proposal being

                                       3

   voted upon against the Compliance Department’s internal list of interested

   persons and, for any matches found, evaluating the anticipated magnitude

   and possible probability of any conflict of interest being present. For

   each referral item, the determination regarding the presence or absence of

   any actual or potential conflict of interest will be documented in a

   Conflicts of Interest Report to the Proxy Coordinator.

   Securities Lending

   In conjunction with industry standards Proxies are not available to be

   voted when the shares are out on loan through either Pioneer’s lending

   program or a client’s managed security lending program. However, Pioneer

   will reserve the right to recall lent securities so that they may be voted

   according to the Pioneer’s instructions. If a portfolio manager would like

   to vote a block of previously lent shares, the Proxy Coordinator will work

   with the portfolio manager and Investment Operations to recall the

   security, to the extent possible, to facilitate the vote on the entire

   block of shares.

   Share-Blocking

   “Share-blocking” is a market practice whereby shares are sent to a

   custodian (which may be different than the account custodian) for record

   keeping and voting at the general meeting. The shares are unavailable for

   sale or delivery until the end of the blocking period (typically the day

   after general meeting date).

   Pioneer will vote in those countries with “share-blocking.” In the event a

   manager would like to sell a security with “share-blocking”, the Proxy

   Coordinator will work with the Portfolio Manager and Investment Operations

   Department to recall the shares (as allowable within the market time-frame

   and practices) and/or communicate with executing brokerage firm. A list of

   countries with “share-blocking” is available from the Investment Operations

   Department upon request.

   Record Keeping

   The Proxy Coordinator shall ensure that Pioneer’s proxy voting service:

       o   Retains a copy of the proxy statement received (unless the proxy

           statement is available from the SEC’s Electronic Data Gathering,

           Analysis, and Retrieval (EDGAR) system);

       o   Retains a record of the vote cast;

       o   Prepares Form N-PX for filing on behalf of each client that is a

           registered investment company; and

       o   Is able to promptly provide Pioneer with a copy of the voting

           record upon its request.

                                       4

   The Proxy Coordinator shall ensure that for those votes that may require

   additional documentation (i.e. conflicts of interest, exception votes and

   case-by-case votes) the following records are maintained:

       o    A record memorializing the basis for each referral vote cast;

       o    A copy of any document created by Pioneer that was material in

            making the decision on how to vote the subject proxy; and

       o    A copy of any conflict notice, conflict consent or any other

            written communication (including emails or other electronic

            communications) to or from the client (or in the case of an

            employee benefit plan, the plan’s trustee or other fiduciaries)

            regarding the subject proxy vote cast by, or the vote

            recommendation of, Pioneer.

       o    Pioneer shall maintain the above records in the client’s file for a

            period not less than ten (10) years.

     Disclosure

     Pioneer shall take reasonable measures to inform its clients of the process

     or procedures clients must follow to obtain information regarding how

     Pioneer voted with respect to assets held in their accounts. In addition,

     Pioneer shall describe to clients its proxy voting policies and procedures

     and will furnish a copy of its proxy voting policies and procedures upon

     request. This information may be provided to clients through Pioneer’s Form

     ADV (Part II) disclosure, by separate notice to the client, or through

     Pioneer’s website.

     Proxy Voting Oversight Group

     The members of the Proxy Voting Oversight Group are Pioneer’s: Director of

     Portfolio Management US, Head of Investment Operations, and Director of

     Compliance. Other members of Pioneer will be invited to attend meetings and

     otherwise participate as necessary. The Head of Investment Operations will

     chair the Proxy Voting Oversight Group.

     The Proxy Voting Oversight Group is responsible for developing, evaluating,

     and changing (when necessary) Pioneer’s Proxy Voting Policies and

     Procedures. The group meets at least annually to evaluate and review these

     policies and procedures and the services of its third-party proxy voting

     service. In addition, the Proxy Voting Oversight Group will meet as

     necessary to vote on referral items and address other business as

     necessary.

     Amendments

     Pioneer may not amend its Proxy Voting Policies And Procedures without the

     prior approval of the Proxy Voting Oversight Group and its corporate

     parent, Pioneer Global Asset Management S.p.A

                                       5

   Proxy Voting Policies

   Pioneer’s sole concern in voting proxies is the economic effect of the

   proposal on the value of portfolio holdings, considering both the short-

   and long-term impact. In many instances, Pioneer believes that supporting

   the company’s strategy and voting “for” management’s proposals builds

   portfolio value. In other cases, however, proposals set forth by management

   may have a negative effect on that value, while some shareholder proposals

   may hold the best prospects for enhancing it. Pioneer monitors developments

   in the proxy-voting arena and will revise this policy as needed.

   All proxies that are received promptly will be voted in accordance with the

   specific policies listed below. All shares in a company held by

   Pioneer-managed accounts will be voted alike, unless a client has given us

   specific voting instructions on an issue or has not delegated authority to

   us. Proxy voting issues will be reviewed by Pioneer’s Proxy Voting

   Oversight Group, which consists of the Director of Portfolio Management US,

   the Director of Investment Operations (the Proxy Coordinator), and the

   Director of Compliance.

   Pioneer has established Proxy Voting Procedures for identifying and

   reviewing conflicts of interest that may arise in the voting of proxies.

   Clients may request, at any time, a report on proxy votes for securities

   held in their portfolios and Pioneer is happy to discuss our proxy votes

   with company management. Pioneer retains a proxy voting service to provide

   research on proxy issues and to process proxy votes.

Administrative

   While administrative items appear infrequently in U.S. issuer proxies, they

   are quite common in non-U.S. proxies.

   We will generally support these and similar management proposals:

       o    Corporate name change.

       o    A change of corporate headquarters.

       o    Stock exchange listing.

       o    Establishment of time and place of annual meeting.

       o    Adjournment or postponement of annual meeting.

       o    Acceptance/approval of financial statements.

       o    Approval of dividend payments, dividend reinvestment plans and other

            dividend-related proposals.

       o    Approval of minutes and other formalities.

                                       6

       o    Authorization of the transferring of reserves and allocation of

            income.

       o    Amendments to authorized signatories.

       o    Approval of accounting method changes or change in fiscal year-end.

       o    Acceptance of labor agreements.

       o    Appointment of internal auditors.

   Pioneer will vote on a case-by-case basis on other routine business;

   however, Pioneer will oppose any routine business proposal if insufficient

   information is presented in advance to allow Pioneer to judge the merit of

   the proposal. Pioneer has also instructed its proxy voting service to

   inform Pioneer of its analysis of any administrative items inconsistent, in

   its view, with supporting the value of Pioneer portfolio holdings so that

   Pioneer may consider and vote on those items on a case-by-case basis.

Auditors

     We normally vote for proposals to:

       o    Ratify the auditors. We will consider a vote against if we are

            concerned about the auditors’ independence or their past work for

            the company. Specifically, we will oppose the ratification of

            auditors and withhold votes from audit committee members if

            non-audit fees paid by the company to the auditing firm exceed the

            sum of audit fees plus audit-related fees plus permissible tax

            fees according to the disclosure categories proposed by the

            Securities and Exchange Commission.

       o    Restore shareholder rights to ratify the auditors.

     We will normally oppose proposals that require companies to:

       o    Seek bids from other auditors.

       o    Rotate auditing firms, except where the rotation is statutorily

            required or where rotation would demonstrably strengthen financial

            disclosure.

       o    Indemnify auditors.

       o    Prohibit auditors from engaging in non-audit services for the

            company.

     Board of Directors

     On issues related to the board of directors, Pioneer normally supports

     management. We will, however, consider a vote against management in

     instances where corporate performance has been very poor or where the board

     appears to lack independence.

                                       7

     General Board Issues

     Pioneer will vote for:

       o    Audit, compensation and nominating committees composed of

            independent directors exclusively.

       o    Indemnification for directors for actions taken in good faith in

            accordance with the business judgment rule. We will vote against

            proposals for broader indemnification.

       o    Changes in board size that appear to have a legitimate business

            purpose and are not primarily for anti-takeover reasons.

       o    Election of an honorary director.

     We will vote against:

       o    Minimum stock ownership by directors.

       o    Term limits for directors. Companies benefit from experienced

            directors, and shareholder control is better achieved through

            annual votes.

       o    Requirements for union or special interest representation on the

            board.

       o    Requirements to provide two candidates for each board seat.

     We will vote on a case-by case basis on these issues:

       o    Separate chairman and CEO positions. We will consider voting with

            shareholders on these issues in cases of poor corporate

            performance.

     Elections of Directors

     In uncontested elections of directors we will vote against:

       o    Individual directors with absenteeism above 25% without valid

            reason. We support proposals that require disclosure of director

            attendance.

       o    Insider directors and affiliated outsiders who sit on the audit,

            compensation, stock option or nominating committees. For the

            purposes of our policy, we accept the definition of affiliated

            directors provided by our proxy voting service.

     We will also vote against:

       o    Directors who have failed to act on a takeover offer where the

            majority of shareholders have tendered their shares.

       o    Directors who appear to lack independence or are associated with

            very poor corporate performance.

                                       8

     We will vote on a case-by case basis on these issues:

       o    Re-election of directors who have implemented or renewed a

            dead-hand or modified dead-hand poison pill (a “dead-hand poison

            pill” is a shareholder rights plan that may be altered only by

            incumbent or “dead ” directors. These plans prevent a potential

            acquirer from disabling a poison pill by obtaining control of the

            board through a proxy vote).

       o    Contested election of directors.

       o    Prior to phase-in required by SEC, we would consider supporting

            election of a majority of independent directors in cases of poor

            performance.

       o    Mandatory retirement policies.

       o    Directors who have ignored a shareholder proposal that has been

            approved by shareholders for two consecutive years.

     Takeover-Related Measures

     Pioneer is generally opposed to proposals that may discourage takeover

     attempts. We believe that the potential for a takeover helps ensure that

     corporate performance remains high.

     Pioneer will vote for:

       o    Cumulative voting.

       o    Increase ability for shareholders to call special meetings.

       o    Increase ability for shareholders to act by written consent.

       o    Restrictions on the ability to make greenmail payments.

       o    Submitting rights plans to shareholder vote.

       o    Rescinding shareholder rights plans (“poison pills”).

       o    Opting out of the following state takeover statutes:

     o Control share acquisition statutes, which deny large holders voting

       rights on holdings over a specified threshold.

     o Control share cash-out provisions, which require large holders to

       acquire shares from other holders.

     o Freeze-out provisions, which impose a waiting period on large

       holders before they can attempt to gain control.

     o Stakeholder laws, which permit directors to consider interests of

       non-shareholder constituencies.

                                       9

     o Disgorgement provisions, which require acquirers to disgorge profits

       on purchases made before gaining control.

     o Fair price provisions.

     o Authorization of shareholder rights plans.

     o Labor protection provisions.

     o Mandatory classified boards.

     We will vote on a case-by-case basis on the following issues:

       o    Fair price provisions. We will vote against provisions requiring

            supermajority votes to approve takeovers. We will also consider

            voting against proposals that require a supermajority vote to

            repeal or amend the provision. Finally, we will consider the

            mechanism used to determine the fair price; we are generally

            opposed to complicated formulas or requirements to pay a premium.

       o    Opting out of state takeover statutes regarding fair price

            provisions. We will use the criteria used for fair price

            provisions in general to determine our vote on this issue.

       o    Proposals that allow shareholders to nominate directors.

     We will vote against:

       o    Classified boards, except in the case of closed-end mutual funds.

       o    Limiting shareholder ability to remove or appoint directors. We

            will support proposals to restore shareholder authority in this

            area. We will review on a case-by-case basis proposals that

            authorize the board to make interim appointments.

       o    Classes of shares with unequal voting rights.

       o    Supermajority vote requirements.

       o    Severance packages (“golden” and “tin” parachutes). We will support

            proposals to put these packages to shareholder vote.

       o    Reimbursement of dissident proxy solicitation expenses. While we

            ordinarily support measures that encourage takeover bids, we

            believe that management should have full control over corporate

            funds.

       o    Extension of advance notice requirements for shareholder proposals.

       o    Granting board authority normally retained by shareholders (e.g.,

            amend charter, set board size).

       o    Shareholder rights plans (“poison pills”). These plans generally

            allow shareholders to buy additional shares at a below-market

            price in the event of a change in control and may deter some bids.

                                       10

     Capital Structure

     Managements need considerable flexibility in determining the company’s

     financial structure, and Pioneer normally supports managements’ proposals

     in this area. We will, however, reject proposals that impose high barriers

     to potential takeovers.

     Pioneer will vote for:

       o    Changes in par value.

       o    Reverse splits, if accompanied by a reduction in number of shares.

       o    Share repurchase programs, if all shareholders may participate on

            equal terms.

       o    Bond issuance.

       o    Increases in “ordinary” preferred stock.

       o    Proposals to have blank-check common stock placements (other than

            shares issued in the normal course of business) submitted for

            shareholder approval.

       o    Cancellation of company treasury shares.

     We will vote on a case-by-case basis on the following issues:

       o    Reverse splits not accompanied by a reduction in number of shares,

            considering the risk of delisting.

       o    Increase in authorized common stock. We will make a determination

            considering, among other factors:

     o Number of shares currently available for issuance;

     o Size of requested increase (we would normally approve increases of up to

       100% of current authorization);

     o Proposed use of the additional shares; and

     o Potential consequences of a failure to increase the number of shares

       outstanding (e.g., delisting or bankruptcy).

       o    Blank-check preferred. We will normally oppose issuance of a new

            class of blank-check preferred, but may approve an increase in a

            class already outstanding if the company has demonstrated that it

            uses this flexibility appropriately.

       o    Proposals to submit private placements to shareholder vote.

       o    Other financing plans.

     We will vote against preemptive rights that we believe limit a company’s

financing flexibility.

                                      11

     Compensation

     Pioneer supports compensation plans that link pay to shareholder returns

     and believes that management has the best understanding of the level of

     compensation needed to attract and retain qualified people. At the same

     time, stock-related compensation plans have a significant economic impact

     and a direct effect on the balance sheet. Therefore, while we do not want

     to micromanage a company’s compensation programs, we will place limits on

     the potential dilution these plans may impose.

     Pioneer will vote for:

       o    401(k) benefit plans.

       o    Employee stock ownership plans (ESOPs), as long as shares

            allocated to ESOPs are less than 5% of outstanding shares. Larger

            blocks of stock in ESOPs can serve as a takeover defense. We will

            support proposals to submit ESOPs to shareholder vote.

       o    Various issues related to the Omnibus Budget and Reconciliation Act

            of 1993 (OBRA), including:

     o Amendments to performance plans to conform with OBRA;

     o Caps on annual grants or amendments of administrative features;

     o Adding performance goals; and

     o Cash or cash-and-stock bonus plans.

       o    Establish a process to link pay, including stock-option grants, to

            performance, leaving specifics of implementation to the company.

       o    Require that option repricings be submitted to shareholders.

       o    Require the expensing of stock-option awards.

       o    Require reporting of executive retirement benefits (deferred

            compensation, split-dollar life insurance, SERPs, and pension

            benefits).

       o    Employee stock purchase plans where the purchase price is equal to

            at least 85% of the market price, where the offering period is no

            greater than 27 months and where potential dilution (as defined

            below) is no greater than 10%.

                                       12

     We will vote on a case-by-case basis on the following issues:

       o    Executive and director stock-related compensation plans. We will

            consider the following factors when reviewing these plans:

       o    The program must be of a reasonable size. We will approve plans

            where the combined employee and director plans together would

            generate less than 15% dilution. We will reject plans with 15% or

            more potential dilution.

            Dilution = (A + B + C) / (A + B + C + D), where

            A = Shares reserved for plan/amendment,

            B = Shares available under continuing plans,

            C = Shares granted but unexercised and

            D = Shares outstanding.

       o    The plan must not:

            o   Explicitly permit unlimited option repricing authority or that

                have repriced in the past without shareholder approval.

            o   Be a self-replenishing “evergreen” plan, plans that grant

                discount options and tax offset payments.

     o We are generally in favor of proposals that increase participation beyond

       executives.

     o We generally support proposals asking companies to adopt rigorous

       vesting provisions for stock option plans such as those that vest

       incrementally over, at least, a three- or four-year period with a pro

       rata portion of the shares becoming exercisable on an annual basis

       following grant date.

     o We generally support proposals asking companies to disclose their

       window period policies for stock transactions. Window period policies

       ensure that employees do not exercise options based on insider

       information contemporaneous with quarterly earnings releases and other

       material corporate announcements.

     o We generally support proposals asking companies to adopt stock holding

       periods for their executives.

       o    All other employee stock purchase plans.

       o    All other compensation-related proposals, including deferred

            compensation plans, employment agreements, loan guarantee programs

            and retirement plans.

       o    All other proposals regarding stock compensation plans, including

            extending the life of a plan, changing vesting restrictions,

            repricing options, lengthening exercise periods or accelerating

            distribution of awards and pyramiding and cashless exercise

            programs.

                                       13

     We will vote against:

       o    Pensions for non-employee directors. We believe these retirement

            plans reduce director objectivity.

       o    Elimination of stock option plans.

     We will vote on a case-by case basis on these issues:

       o    Limits on executive and director pay.

       o    Stock in lieu of cash compensation for directors.

     Corporate Governance

     Pioneer will vote for:

       o    Confidential Voting.

       o    Equal access provisions, which allow shareholders to contribute

            their opinion to proxy materials.

       o    Proposals requiring directors to disclose their ownership of shares

            in the company.

     We will vote on a case-by-case basis on the following issues:

       o    Change in the state of incorporation. We will support

            reincorporations supported by valid business reasons. We will

            oppose those that appear to be solely for the purpose of

            strengthening takeover defenses.

       o    Bundled proposals. We will evaluate the overall impact of the

            proposal.

       o    Adopting or amending the charter, bylaws or articles of association.

       o    Shareholder appraisal rights, which allow shareholders to demand

            judicial review of an acquisition price.

     We will vote against:

       o    Shareholder advisory committees. While management should solicit

            shareholder input, we prefer to leave the method of doing so to

            management’s discretion.

       o    Limitations on stock ownership or voting rights.

       o    Reduction in share ownership disclosure guidelines.

                                       14

     Mergers and Restructurings

     Pioneer will vote on the following and similar issues on a case-by-case

     basis:

       o    Mergers and acquisitions.

       o    Corporate restructurings, including spin-offs, liquidations, asset

            sales, joint ventures, conversions to holding company and

            conversions to self-managed REIT structure.

       o    Debt restructurings.

       o    Conversion of securities.

       o    Issuance of shares to facilitate a merger.

       o    Private placements, warrants, convertible debentures.

       o    Proposals requiring management to inform shareholders of merger

            opportunities.

     We will normally vote against shareholder proposals requiring that the

     company be put up for sale.

     Mutual Funds

     Many of our portfolios may invest in shares of closed-end mutual funds or

     exchange-traded funds. The non-corporate structure of these investments

     raises several unique proxy voting issues.

     Pioneer will vote for:

       o    Establishment of new classes or series of shares.

       o    Establishment of a master-feeder structure.

     Pioneer will vote on a case-by-case on:

       o    Changes in investment policy. We will normally support changes

            that do not affect the investment objective or overall risk level

            of the fund. We will examine more fundamental changes on a

            case-by-case basis.

       o    Approval of new or amended advisory contracts.

       o    Changes from closed-end to open-end format.

       o    Authorization for, or increase in, preferred shares.

       o    Disposition of assets, termination, liquidation, or mergers.

       o    Classified boards of closed-end mutual funds, but will typically

            support such proposals.

                                       15

     Social Issues

     Pioneer will abstain on stockholder proposals calling for greater

     disclosure of corporate activities with regard to social issues. “Social

     Issues” may generally be described as shareholder proposals for a company

     to:

       o    Conduct studies regarding certain issues of public concern and

            interest;

       o    Study the feasibility of the company taking certain actions with

            regard to such issues; or

       o    Take specific action, including ceasing certain behavior and

            adopting company standards and principles, in relation to issues

            of public concern and interest.

     We believe these issues are important and should receive management

     attention.

     Pioneer will vote against proposals calling for substantial changes in the

     company’s business or activities. We will also normally vote against

     proposals with regard to contributions, believing that management should

     control the routine disbursement of funds.

ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

(a) If the registrant is a closed-end management investment company that is filing an annual report on this Form N-CSR, provide the following information:

(1) State the name, title, and length of service of the person or persons employed by or associated with the registrant or an investment adviser of the registrant who are primarily responsible for the day-to-day management of the registrant’s portfolio (“Portfolio Manager”). Also state each Portfolio Manager’s business experience during the past 5 years.

Additional information about the portfolio manager

Other accounts managed by the portfolio manager

The table below indicates, for the portfolio manager of the fund, information about the accounts other than the fund over which the portfolio manager has day-to-day investment responsibility. All information on the number of accounts and total assets in the table is as of March 31, 2021. For purposes of the table, “Other Pooled Investment Vehicles” may include investment partnerships, undertakings for collective investments in transferable securities (“UCITS”) and other non-U.S. investment funds and group trusts, and “Other Accounts” may include separate accounts for institutions or individuals, insurance company general or separate accounts, pension funds and other similar institutional accounts but generally do not include the portfolio manager’s personal investment accounts or those which the manager may be deemed to own beneficially under the code of ethics. Certain funds and other accounts managed by the portfolio manager may have substantially similar investment strategies.

Name of Portfolio Manager	Type of Account	Number of Accounts Managed	Total Assets Managed (000’s)	Number of Accounts Managed for which Advisory Fee is Performance- Based	Assets Managed  for which Advisory Fee is Performance- Based (000’s)
David Eurkus	Other Registered Investment Companies	4	$3,928,430	N/A	N/A
	Other Pooled Investment Vehicles	0	$0	N/A	N/A
	Other Accounts	0	$0	N/A	N/A
Jonathan Chirunga	Other Registered Investment Companies	4	$3,928,430	N/A	N/A
	Other Pooled Investment Vehicles	0	$0	N/A	N/A
	Other Accounts	0	$0	N/A	N/A

Potential conflicts of interest

When a portfolio manager is responsible for the management of more than one account, the potential arises for the portfolio manager to favor one account over another. The principal types of potential conflicts of interest that may arise are discussed below. For the reasons outlined below, Amundi US does not believe that any material conflicts are likely to arise out of a portfolio manager’s responsibility for the management of the fund as well as one or more other accounts. Although Amundi US has adopted procedures that it believes are reasonably designed to detect and prevent violations of the federal securities laws and to mitigate the potential for conflicts of interest to affect its portfolio management decisions, there can be no assurance that all conflicts will be identified or that all procedures will be effective in mitigating the potential for such risks. Generally, the risks of such conflicts of interest are increased to the extent that a portfolio manager has a financial incentive to favor one account over another. Amundi US has structured its compensation arrangements in a manner that is intended to limit such potential for conflicts of interest. See “Compensation of Portfolio Managers” below.

• A portfolio manager could favor one account over another in allocating new investment opportunities that have limited supply, such as initial public offerings and private placements. If, for example, an initial public offering that was expected to appreciate in value significantly shortly after the offering was allocated to a single account, that account may be expected to have better investment performance than other accounts that did not receive an allocation of the initial public offering. Generally, investments for which there is limited availability are allocated based upon a range of factors including available cash and

consistency with the accounts’ investment objectives and policies. This allocation methodology necessarily involves some subjective elements but is intended over time to treat each client in an equitable and fair manner. Generally, the investment opportunity is allocated among participating accounts on a pro rata basis. Although Amundi US believes that its practices are reasonably designed to treat each client in an equitable and fair manner, there may be instances where a fund may not participate, or may participate to a lesser degree than other clients, in the allocation of an investment opportunity.

• A portfolio manager could favor one account over another in the order in which trades for the accounts are placed. If a portfolio manager determines to purchase a security for more than one account in an aggregate amount that may influence the market price of the security, accounts that purchased or sold the security first may receive a more favorable price than accounts that made subsequent transactions. The less liquid the market for the security or the greater the percentage that the proposed aggregate purchases or sales represent of average daily trading volume, the greater the potential for accounts that make subsequent purchases or sales to receive a less favorable price. When a portfolio manager intends to trade the same security on the same day for more than one account, the trades typically are “bunched,” which means that the trades for the individual accounts are aggregated and each account receives the same price. There are some types of accounts as to which bunching may not be possible for contractual reasons (such as directed brokerage arrangements). Circumstances may also arise where the trader believes that bunching the orders may not result in the best possible price. Where those accounts or circumstances are involved, Amundi US will place the order in a manner intended to result in as favorable a price as possible for such client.

• A portfolio manager could favor an account if the portfolio manager’s compensation is tied to the performance of that account to a greater degree than other accounts managed by the portfolio manager. If, for example, the portfolio manager receives a bonus based upon the performance of certain accounts relative to a benchmark while other accounts are disregarded for this purpose, the portfolio manager will have a financial incentive to seek to have the accounts that determine the portfolio manager’s bonus achieve the best possible performance to the possible detriment of other accounts. Similarly, if Amundi US receives a performance-based advisory fee, the portfolio manager may favor that account, whether or not the performance of that account directly determines the portfolio manager’s compensation.

• A portfolio manager could favor an account if the portfolio manager has a beneficial interest in the account, in order to benefit a large client or to compensate a client that had poor returns. For example, if the portfolio manager held an interest in an investment partnership that was one of the accounts managed by the portfolio manager, the portfolio manager would have an economic incentive to favor the account in which the portfolio manager held an interest.

• If the different accounts have materially and potentially conflicting investment objectives or strategies, a conflict of interest could arise. For example, if a portfolio manager purchases a security for one account and sells the same security for another account, such trading pattern may disadvantage either the account that is long or short. In making portfolio manager assignments, Amundi US seeks to avoid such potentially conflicting situations. However, where a portfolio manager is responsible for accounts with differing investment objectives and policies, it is possible that the portfolio manager will conclude that it is in the best interest of one account to sell a portfolio security while another account continues to hold or increase the holding in such security.

Compensation of portfolio manager

Amundi US has adopted a system of compensation for portfolio managers that seeks to align the financial interests of the portfolio managers with those of shareholders of the accounts (including Pioneer funds) the portfolio managers manage, as well as with the financial performance of Amundi US. The compensation program for all Amundi US portfolio managers includes a base salary (determined by the rank and tenure of the employee) and an annual bonus program, as well as customary benefits that are offered generally to all full-time employees. Base compensation is fixed and normally reevaluated on an annual basis. Amundi US seeks to set base compensation at market rates, taking into account the experience and responsibilities

of the portfolio manager. The bonus plan is intended to provide a competitive level of annual bonus compensation that is tied to the portfolio manager achieving superior investment performance and align the interests of the investment professional with those of shareholders, as well as with the financial performance of Amundi US. Any bonus under the plan is completely discretionary, with a maximum annual bonus that may be in excess of base salary. The annual bonus is based upon a combination of the following factors:

• Quantitative investment performance. The quantitative investment performance calculation is based on pre-tax investment performance of all of the accounts managed by the portfolio manager (which includes the

fund and any other accounts managed by the portfolio manager) over a one-year period (20% weighting) and four-year period (80% weighting), measured for periods ending on December 31. The accounts, which include the fund, are ranked against a group of mutual funds with similar investment objectives and investment focus (60%) and a broad-based securities market index measuring the performance of the same type of securities in which the accounts invest (40%), which, in the case of the fund, is the Barclays Capital Municipal Bond Index and the Barclays Capital High Yield Municipal Bond Index. As a result of these two benchmarks, the performance of the portfolio manager for compensation purposes is measured against the criteria that are relevant to the portfolio manager’s competitive universe.

• Qualitative performance. The qualitative performance component with respect to all of the accounts managed by the portfolio manager includes objectives, such as effectiveness in the areas of teamwork, leadership, communications and marketing, that are mutually established and evaluated by each portfolio manager and management.

• Amundi US results and business line results. Amundi US’s financial performance, as well as the investment performance of its investment management group, affect a portfolio manager’s actual bonus by a leverage factor of plus or minus (+/–) a predetermined percentage.

The quantitative and qualitative performance components comprise 80% and 20%, respectively, of the overall bonus calculation (on a pre-adjustment basis). A portion of the annual bonus is deferred for a specified period and may be invested in one or more Pioneer funds.

Certain portfolio managers participate in other programs designed to reward and retain key contributors. Portfolio managers also may participate in a deferred compensation program, whereby deferred amounts are invested in one or more Pioneer funds or collective investment trusts or other unregistered funds with similar investment objectives, strategies and policies.

Share ownership by portfolio manager

The following table indicates as of March 31, 2021 the value, within the indicated range, of shares beneficially owned by the portfolio manager of the fund.

Name of Portfolio Manager	Beneficial Ownership  of the Fund*
David Eurkus	A
Jonathan Chirunga	A

* Key to Dollar Ranges

A.	None
B.	$1 – $10,000
C.	$10,001 – $50,000
D.	$50,001 – $100,000
E.	$100,001 – $500,000
F.	$500,001 – $1,000,000
G.	Over $1,000,000

ITEM 9. PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS.

(a) If the registrant is a closed-end management investment company, in the following tabular format, provide the information specified in paragraph (b) of this Item with respect to any purchase made by or on behalf of the registrant or any affiliated purchaser, as defined in Rule 10b-18(a)(3) under the Exchange Act (17 CFR 240.10b-18(a)(3)), of shares or other units of any class of the registrant’s equity securities that is registered by the registrant pursuant to Section 12 of the Exchange Act (15 U.S.C. 781).

During the period covered by this report, there were no purchases made by or on behalf of the registrant or any affiliated purchaser as defined in Rule 10b-18(a)(3) under the Securities Exchange Act

of 1934 (the Exchange Act), of shares of the registrants equity securities that are registered by the registrant pursuant to Section 12 of the Exchange Act.

ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

Describe any material changes to the procedures by which shareholders may recommend nominees to the registrant’s board of directors, where those changes were implemented after the registrant last provided disclosure in response to the requirements of Item 407(c)(2)(iv) of Regulation S-R(17 CFR 229.407)(as required by Item 22(b)(15)) of Schedule 14A (17 CFR 240.14a-101), or this Item.

There have been no material changes to the procedures by which the shareholders may recommend nominees to the registrant’s board of directors since the registrant last provided disclosure in response to the requirements of Item 407(c)(2)(iv) of Regulation S-R of Schedule 14(A) in its definitive proxy statement, or this item.

ITEM 11. CONTROLS AND PROCEDURES.

(a) Disclose the conclusions of the registrant’s principal executive and principal financials officers, or persons performing similar functions, regarding the effectiveness of the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Act (17 CFR 270.30a-3(c))) as of a date within 90 days of the filing date of the report that includes the disclosure required by this paragraph, based on the evaluation of these controls and procedures required by Rule 30a-3(b) under the Act (17 CFR 270.30(a)-3(b) and Rules 13a-15(b) or 15d-15(b) under the Exchange Act (17 CFR 240.13a-15(b) or 240.15d-15(b)).

The registrant’s principal executive officer and principal financial officer have concluded that the registrant’s disclosure controls and procedures are effective based on the evaluation of these controls and procedures as of a date within 90 days of the filing date of this report.

(b) Disclose any change in the registrant’s internal control over financial reporting (as defined in Rule 30a-3(d) under the Act (17CFR 270.30a-3(d)) that occured during the second fiscal quarter of the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

There were no significant changes in the registrant’s internal control over financial reporting that occurred during the second fiscal quarter of the period covered by this report that have materially affected, or are reasonably likely to materially affect, the registrant’s internal control over financial reporting.

Item 12. Disclosure of Securities Lending Activities for Closed-End Management Investment Companies.

(a) If the registrant is a closed-end management investment company, provide the following dollar amounts of income and compensation related to the securities lending activities of the registrant during its most recent fiscal year:

N/A

(1) Gross income from securities lending activities;

N/A

(2) All fees and/or compensation for each of the following securities lending activities and related services: any share of revenue generated by the securities lending program paid to the securities lending agent(s) (revenue split); fees paid for cash collateral management services (including fees deducted from a pooled cash collateral reinvestment vehicle) that are not included in the revenue split; administrative fees that are not included in the revenue split; fees for indemnification that are not included in the revenue split; rebates paid to borrowers; and any other fees relating to the securities lending program that are not included in the revenue split, including a description of those other fees;

N/A

(3) The aggregate fees/compensation disclosed pursuant to paragraph (2); and

N/A

(4) Net income from securities lending activities (i.e., the dollar amount in paragraph (1) minus the dollar amount in paragraph (3)).

If a fee for a service is included in the revenue split, state that the fee is included in the revenue split.

N/A

(b) If the registrant is a closed-end management investment company, describe the services provided to the registrant by the securities lending agent in the registrants most recent fiscal year.

N/A

ITEM 13. EXHIBITS.

(a) File the exhibits listed below as part of this Form. Letter or number the exhibits in the sequence indicated.

(1) Any code of ethics, or amendment thereto, that is the subject of the disclosure required by Item 2, to the extent that the registrant intends to satisfy the Item 2 requirements through filing of an exhibit.

(2) A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the Act (17 CFR 270.30a-2(a)) , exactly as set forth below:

Filed herewith.

SIGNATURES

[See General Instruction F]

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

(Registrant) Pioneer Municipal High Income Advantage Trust

By (Signature and Title)* /s/ Lisa M. Jones

Lisa M. Jones, President & Chief Executive Officer

Date June 4, 2021

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

By (Signature and Title)* /s/ Lisa M. Jones

Lisa M. Jones, President & Chief Executive Officer

Date June 4, 2021

By (Signature and Title)* /s/ Anthony J. Koenig

Anthony J. Koenig, Jr., Managing Director, Chief Operations Officer & Treasurer of the Funds

Date June 4, 2021

* Print the name and title of each signing officer under his or her signature.