BlackRock Funds - Money Market Institutional

497 1 d497.htm BLACKROCK FUNDS - MONEY MARKET INSTITUTIONAL BlackRock Funds - Money Market Institutional


ALTERNATIVES		BLACKROCK SOLUTIONS		EQUITIES		FIXED INCOME		LIQUIDITY		REAL ESTATE

BlackRock Funds

Money Market Portfolios

Institutional Shares

Prospectus

January 31, 2006

BlackRock Funds^SMis a mutual fund family with 51 investment portfolios, 8 of which are described in this prospectus.

NOT FDIC INSURED

MAY LOSE VALUE

NO BANK GUARANTEE

The Securities and Exchange Commission has not approved or disapproved these securities or passed upon the adequacy of this Prospectus. Any representation to the contrary is a criminal offense.

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Table of

Contents

How to Find the Information You Need



*How to Find the Information You Need*		1

THE BLACKROCK MONEY MARKET PORTFOLIOS

*Money Market*		2

*U.S. Treasury Money Market*		7

*Municipal Money Market*		11

*New Jersey Municipal Money Market*		17

*North Carolina Municipal Money Market*		23

*Ohio Municipal Money Market*		29

*Pennsylvania Municipal Money Market*		35

*Virginia Municipal Money Market*		41

*About Your Investment* *How to Buy/Sell Shares*		47

*Dividends/Distributions/Taxes*		56

How to Find the

Information You Need

About BlackRock Funds

This is the BlackRock Money Market Portfolios Prospectus. It has been written to provide you with the information you need to make an informed decision about whether to invest in BlackRock Funds (the Fund). The Fund’s investment adviser is BlackRock Advisors, Inc. (BlackRock).

This Prospectus contains information on all 8 of the BlackRock Money Market funds. The Prospectus is organized so that each fund has its own short section. Simply turn to the section for any particular fund to read about important fund facts. Also included are sections that tell you about buying and selling shares, certain fees and expenses, shareholder features of the funds and your rights as a shareholder. These sections apply to all the funds.

BlackRock

Money Market Portfolio

IMPORTANT DEFINITIONS

Asset-Backed Securities: Debt securities that are backed by a pool of assets, usually loans such as installment sale contracts or credit card receivables.

Commercial Paper: Short-term securities with maturities of 1 to 397 days which are issued by banks, corporations and others.

Dollar-Weighted Average Maturity: The average maturity of the fund is the average amount of time until the organizations that issued the debt securities in the fund’s portfolio must pay off the principal amount of the debt. “Dollar-weighted” means the larger the dollar value of debt security in the fund, the more weight it gets in calculating this average.

Liquidity: Liquidity is the ability to easily convert investments into cash without losing a significant amount of money in the process.

Net Asset Value (NAV): The value of everything the fund owns, minus everything it owes, divided by the number of shares held by investors.

Repurchase Agreement: A special type of short-term investment. A dealer sells securities to a fund and agrees to buy them back later at a set price. In effect, the dealer is borrowing the fund’s money for a short time, using the securities as collateral.

Variable or Floating Rate Securities: Securities whose interest rates adjust automatically after a certain period of time and/or whenever a predetermined standard interest rate changes.

Investment Goal

The fund seeks as high a level of current income as is consistent with maintaining liquidity and stability of principal.

Primary Investment Strategies

In pursuit of this goal, the fund invests in a broad range of short term, high quality, U.S. dollar-denominated money market instruments, including government, U.S. and foreign bank, commercial and other obligations. Under normal market conditions, at least 25% of the fund’s total assets will be invested in obligations of issuers in the financial services industry or in obligations, such as repurchase agreements, secured by such obligations.

Specifically, the fund may invest in:

1)	U.S. dollar-denominated obligations issued or supported by the credit of U.S. or foreign banks or savings institutions with total assets of more than $1 billion (including obligations of foreign branches of such banks).

High quality commercial paper and other obligations issued or guaranteed by U.S. and foreign corporations and other issuers rated (at the time of purchase) A-2 or higher by Standard and Poor’s, Prime-2 or higher by Moody’s or F-2 or higher by Fitch, as well as high quality corporate bonds rated A or higher at the time of purchase by those rating agencies.

3)	Unrated notes, paper and other instruments that are determined by the fund manager to be of comparable quality to the instruments described above.

4)	Asset-backed securities (including interests in pools of assets such as mortgages, installment purchase obligations and credit card receivables).

5)	Securities issued or guaranteed by the U.S. Government or by its agencies or authorities.

6)	Dollar-denominated securities issued or guaranteed by foreign governments or their political subdivisions, agencies or authorities.

7)	Repurchase agreements relating to the above instruments.

The fund seeks to maintain a net asset value of $1.00 per share.

The securities purchased by the fund are subject to the quality, diversification and other requirements of Rule 2a-7 under the

Investment Company Act and other rules of the Securities and Exchange Commission.

Quality

The fund manager, under guidelines established by the Fund’s Board of Trustees, will only purchase securities that have short-term debt ratings at the time of purchase in the two highest rating categories from at least two national rating agencies, or one such rating if the security is rated by only one agency. Securities that do not have a short-term rating must be determined by the fund manager to be of comparable quality.

Maturity

The fund is managed so that the dollar-weighted average maturity of all its investments will be 90 days or less. The fund will buy only those securities which have remaining maturities of 397 days or less (except for certain variable and floating rate instruments and securities collateralizing repurchase agreements). The fund’s securities may not earn as high a level of income as longer term or lower quality securities, which generally have greater risk and fluctuate more in value.

Normally, the fund may hold up to 20% of its assets in uninvested cash reserves. Uninvested cash will not earn income.

Key Risks

The value of money market investments tends to fall when prevailing interest rates rise, when an issuer’s creditworthiness declines or when the rate of inflation increases, although they’re generally less sensitive to such changes than longer-term securities.

Because of its concentration in the financial services industry, the fund will be exposed to a large extent to the risks associated with that industry, such as government regulation, the availability and cost of capital funds, consolidation and general economic conditions. Financial services companies are also exposed to losses if borrowers and other counter-parties experience financial problems and/or cannot repay their obligations.

The obligations of foreign banks and other foreign issuers may involve certain risks in addition to those of domestic issuers, including higher transaction costs, less complete financial information, political and economic instability, less stringent regulatory requirements and less market liquidity.

Treasury obligations may differ in their interest rates, maturities, times of issuance and other characteristics. Obligations of U.S. Government agencies and authorities are supported by varying

degrees of credit but generally are not backed by the full faith and credit of the U.S. Government. No assurance can be given that the U.S. Government will provide financial support to its agencies and authorities if it is not obligated by law to do so.

The fund is able to invest in securities issued by private companies, which subjects it to credit risk, which refers to the possibility that the issuer of a security will not be able to make principal or interest payments.

The fund could lose money if a seller under a repurchase agreement defaults or declares bankruptcy.

The fund may purchase variable and floating rate instruments. The absence of an active market for these securities could make it difficult for the fund to dispose of them if the issuer defaults.

Although the fund seeks to preserve the value of your investment at $1.00 per share, it is possible to lose money by investing in the fund. When you invest in this fund you are not making a bank deposit. Your investment is not insured or guaranteed by the Federal Deposit Insurance Corporation or by any bank or governmental agency.

Risk / Return Information

The chart and table below give you a picture of the fund’s long-term performance for Institutional Shares. The information shows you how the fund’s performance has varied year by year and provides some indication of the risks of investing in the fund. As with all such investments, past performance (before and after taxes) is not an indication of future results. If BlackRock and its affiliates had not waived or reimbursed certain fund expenses during these periods, the fund’s returns would have been lower.

As of 12/31

ANNUAL TOTAL RETURNS*

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IMPORTANT DEFINITIONS

Advisory Fees: Fees paid to the investment adviser for portfolio management services.

Other Expenses: Include administration, transfer agency, custody, professional fees and registration fees.

As of 12/31/05

AVERAGE ANNUAL TOTAL RETURNS*


	1 Year		3 Years		5 Years		10 Years		Inception Date¹
Money Market
Return Before Taxes	2.91	%	1.61	%	2.09	%	3.77	%	10/04/89

The chart and the table both assume reinvestment of dividends and distributions.

Inception date of the fund’s oldest class(es).

Expenses and Fees

As a shareholder you pay certain fees and expenses. Annual fund operating expenses are paid out of fund assets.

The table below describes the fees and expenses that you may pay if you buy and hold Institutional Shares of the fund. The table is based on expenses for the most recent fiscal year (restated to reflect current fees) and may not reflect expenses of the fund after February 1, 2007.

Annual Fund Operating Expenses

(Expenses that are deducted from fund assets)


Advisory fees	.43	%
Other expenses	.17	%
Total annual fund operating expenses	.60	%
Fee waivers and expense reimbursements*	.18	%
Net expenses*	.42	%

BlackRock has contractually agreed to waive or reimburse fees or expenses in order to limit Institutional class expenses to .42% of average daily net assets until February 1, 2007. See the “Management” section for a discussion of these waivers and reimbursements.

Example:

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. We are assuming an initial investment of $10,000, 5% total return each year with no changes in operating expenses and redemption at the end of each time period. Although your actual cost may be higher or lower, based on these assumptions your costs would be:


	1 Year		3 Years		5 Years		10 Years
Institutional Class	$	43	$	174	$	317	$	733

Financial Highlights

The financial information in the table below shows the fund’s financial performance for the periods indicated. Certain information reflects results for a single fund share. The term “Total Return” indicates how much your investment would have increased or decreased during this period of time and assumes that you have reinvested all dividends and distributions. These figures have been audited by Deloitte & Touche LLP (for the fiscal years ended September 30, 2004 and later) and PricewaterhouseCoopers LLP (for the other fiscal years shown). Deloitte & Touche LLP has been appointed as the Fund’s independent registered public accountant for the current fiscal year. Deloitte & Touche LLP’s report, and the Fund’s audited financial statements, are included in the Fund’s 2005 annual report as filed on Form N-CSR, as it may be amended from time to time, which is available upon request (see back cover for ordering instructions).

FINANCIAL HIGHLIGHTS

(For an Institutional Share Outstanding Throughout Each Period)

Money Market Portfolio



	Year Ended 9/30/05			Year Ended 9/30/04			Year Ended 9/30/03¹			Year Ended 9/30/02¹			Year Ended 9/30/01¹
Net asset value at beginning of period	$	1.00		$	1.00		$	1.00		$	1.00		$	1.00

Income from investment operations
Net investment income		0.0233			0.0083			0.0103			0.0186			0.0496

Total from investment operations		0.0233			0.0083			0.0103			0.0186			0.0496

Less distributions
Distributions from net investment income		(0.0233	)		(0.0083	)		(0.0103	)		(0.0186	)		(0.0496	)

Total distributions		(0.0233	)		(0.0083	)		(0.0103	)		(0.0186	)		(0.0496	)

Net asset value at end of period	$	1.00		$	1.00		$	1.00		$	1.00		$	1.00

Total return		2.36	%		0.84	%		1.04	%		1.87	%		5.08	%
Ratios/Supplemental data
Net assets at end of period (in thousands)	$	574,473		$	593,380		$	2,006,202		$	2,462,579		$	2,507,649
Ratios of expenses to average net assets
Net expenses		0.42	%		0.42	%		0.42	%		0.42	%		0.42	%
Total expenses		0.71	%		0.63	%		0.62	%		0.61	%		0.60	%
Ratios of net investment income to average net assets
After advisory/administration fee waivers		2.30	%		0.78	%		1.04	%		1.86	%		4.96	%
Before advisory/administration fee waivers		2.01	%		0.57	%		0.84	%		1.67	%		4.79	%

Audited by other auditors.

BlackRock

U.S. Treasury Money Market Portfolio

IMPORTANT DEFINITIONS

Liquidity: Liquidity is the ability to easily convert investments into cash without losing a significant amount of money in the process.

Net Asset Value (NAV): The value of everything the fund owns, minus everything it owes, divided by the number of shares held by investors.

Variable or Floating Rate Securities: Securities whose interest rates adjust automatically after a certain period of time and/or whenever a predetermined standard interest rate changes.

Investment Goal

The fund seeks as high a level of current income as is consistent with maintaining liquidity and stability of principal.

Primary Investment Strategies

In pursuit of this goal, the fund normally invests at least 80% of its net assets in short-term bills, notes and other obligations issued or guaranteed by the U.S. Treasury and related repurchase agreements.

The fund seeks to maintain a net asset value of $1.00 per share.

The securities purchased by the fund are subject to the quality, diversification and other requirements of Rule 2a-7 under the Investment Company Act and other rules of the Securities and Exchange Commission.

Quality

The fund manager, under guidelines established by the Fund’s Board of Trustees, will purchase securities that have short-term debt ratings at the time of purchase in the two highest rating categories from at least two national rating agencies, or one such rating if the security is rated by only one agency. Securities that do not have a short-term rating must be determined by the fund manager to be of comparable quality.

Maturity

Normally, the fund may hold up to 20% of its assets in uninvested cash reserves. Uninvested cash will not earn income.

Key Risks

The value of money market investments tends to fall when prevailing interest rates rise or when the rate of inflation increases, although they’re generally less sensitive to such changes than longer-term securities.

Treasury obligations may differ in their interest rates, maturities, times of issuance and other characteristics.

The fund could lose money if a seller under a repurchase agreement defaults or declares bankruptcy.

The fund may purchase variable and floating rate instruments. The absence of an active market for these securities could make it difficult for the fund to dispose of them if the issuer defaults.

Risk / Return Information

As of 12/31

ANNUAL TOTAL RETURNS*

LOGO

As of 12/31/05

AVERAGE ANNUAL TOTAL RETURNS*


	1 Year	3 Years	5 Years	10 Years	Inception Date¹
US Treasury MM
Return Before Taxes	2.78%	1.49%	1.92%	3.57%	11/01/89

The chart and the table both assume reinvestment of dividends and distributions.

Inception date of the fund’s oldest class(es).

IMPORTANT DEFINITIONS

Advisory Fees: Fees paid to the investment adviser for portfolio management services.

Other Expenses: Include administration, transfer agency, custody, professional fees and registration fees.

Expenses and Fees

As a shareholder you pay certain fees and expenses. Annual fund operating expenses are paid out of fund assets.

Annual Fund Operating Expenses

(Expenses that are deducted from fund assets)


Advisory fees		.45%
Other expenses		.17%
Total annual fund operating expenses		.62%
Fee waivers and expense reimbursements*		.21%
Net expenses*		.41%

BlackRock has contractually agreed to waive or reimburse fees or expenses in order to limit Institutional class expenses to .41% of average daily net assets until February 1, 2007. The fund may have to repay some of these waivers and reimbursements to BlackRock in the following two years. See the “Management” section for a discussion of these waivers and reimbursements.

Example:


	1 Year		3 Years		5 Years		10 Years
Institutional Class	$	42	$	177	$	325	$	754

Financial Highlights

FINANCIAL HIGHLIGHTS

(For an Institutional Share Outstanding Throughout Each Period)

U.S. Treasury Money Market Portfolio



	Year Ended 9/30/05			Year Ended 9/30/04			Year Ended 9/30/03¹			Year Ended 9/30/02¹			Year Ended 9/30/01¹
Net asset value at beginning of period	$	1.00		$	1.00		$	1.00		$	1.00		$	1.00

Income from investment operations
Net investment income		0.0221			0.0072			0.0091			0.0166			0.0464

Total from investment operations		0.0221			0.0072			0.0091			0.0166			0.0464

Less distributions
Distributions from net investment income		(0.0221	)		(0.0072	)		(0.0091	)		(0.0166	)		(0.0464	)

Total distributions		(0.0221	)		(0.0072	)		(0.0091	)		(0.0166	)		(0.0464	)

Net asset value at end of period	$	1.00		$	1.00		$	1.00		$	1.00		$	1.00

Total return		2.23	%		0.72	%		0.92	%		1.68	%		4.74	%
Ratios/Supplemental data
Net assets at end of period (in thousands)	$	164,905		$	176,136		$	379,240		$	526,344		$	380,200
Ratios of expenses to average net assets
Net expenses		0.41	%		0.41	%		0.41	%		0.41	%		0.41	%
Total expenses		0.73	%		0.70	%		0.70	%		0.68	%		0.68	%
Ratios of net investment income to average net assets
After advisory/administration fee waivers		2.18	%		0.68	%		0.93	%		1.62	%		4.61	%
Before advisory/administration fee waivers		1.86	%		0.39	%		0.64	%		1.35	%		4.34	%

Audited by other auditors.

BlackRock

Municipal Money Market Portfolio

IMPORTANT DEFINITIONS

General Obligation Bonds: Bonds which are secured by the issuer’s pledge of its full faith, credit and taxing power for the payment of principal and interest.

Liquidity: Liquidity is the ability to easily convert investments into cash without losing a significant amount of money in the process.

Municipal Lease Obligations: These provide participation in municipal lease agreements and installment purchase contracts, but are not part of the general obligations of the municipality.

Municipal Security: A short-term obligation issued by or on behalf of states, possessions and territories of the United States, their political subdivisions and their agencies or authorities.

Net Asset Value (NAV): The value of everything the fund owns, minus everything it owes, divided by the number of shares held by investors.

Revenue Bonds: Bonds which are secured only by the revenues from a particular facility or class of facilities, such as a water or sewer system, or from the proceeds of a special excise tax or other revenue source.

Tax-Exempt Commercial Paper: Short-term Municipal Securities with maturities of 1 to 270 days.

Variable or Floating Rate Securities: Securities whose interest rates adjust automatically after a certain period of time and/or whenever a predetermined standard interest rate changes.

Investment Goal

The fund seeks as high a level of current income exempt from Federal income tax as is consistent with maintaining liquidity and stability of principal.

Primary Investment Strategies

In pursuit of this goal, the fund invests primarily in Municipal Securities.

Specifically, the fund may invest in:

1)	Fixed and variable rate notes and similar debt instruments rated MIG-2, VMIG-2 or Prime-2 or higher by Moody’s, SP-2 or A-2 or higher by Standard & Poor’s or F-2 or higher by Fitch.

2)	Tax-exempt commercial paper and similar debt instruments rated Prime-2 or higher by Moody’s, A-2 or higher by Standard & Poor’s or F-2 or higher by Fitch.

3)	Municipal bonds rated A or higher by Moody’s, Standard & Poor’s or Fitch.

4)	Unrated notes, paper and other instruments that are determined by the fund manager to be of comparable quality to the instruments described above.

The fund seeks to maintain a net asset value of $1.00 per share.

The fund normally invests at least 80% of its net assets in Municipal Securities and other instruments whose interest is exempt from regular Federal income tax and the Federal Alternative Minimum Tax. The other 20% of its assets can be invested in securities which are subject to regular Federal income tax and the Federal Alternative Minimum Tax.

The fund intends to invest so that less than 25% of its total assets are Municipal Securities of issuers located in the same state.

The securities purchased by the fund are subject to the quality, diversification and other requirements of Rule 2a-7 under the Investment Company Act and the rules of the Securities and Exchange Commission.

Quality

The fund manager, under guidelines established by the Fund’s Board of Trustees, will only purchase securities that have short-term debt ratings at the time of purchase in the two highest rating

categories from at least two national rating agencies, or one such rating if the security is rated by only one agency. Securities that do not have a short-term rating must be determined by the fund manager to be of comparable quality.

Maturity

Normally, the fund may hold up to 20% of its assets in uninvested cash reserves. Uninvested cash will not earn income. It is possible that in extreme market conditions the fund may invest more than 20% of its assets in securities that are not Municipal Securities (and therefore are subject to regular Federal income tax and the Federal Alternative Minimum Tax) and may hold an unlimited amount of uninvested cash reserves. If market conditions improve, these strategies could result in reducing the potential gain from the market upswing, thus reducing the fund’s opportunity to achieve its investment goal.

Should the Fund’s Board of Trustees determine that the investment goal of the fund should be changed, shareholders will be given at least 30 days notice before any such change is made. However, such change can be effected without shareholder approval. The fund may not change the requirement that it normally invest at least 80% of its net assets in Municipal Securities and other instruments whose interest is exempt from regular Federal income tax and the Federal Alternative Minimum Tax without shareholder approval.

Key Risks

Securities also include moral obligation bonds, which are normally issued by special purpose public authorities. If the issuer of moral obligation bonds is unable to pay its debts from current revenues, it may draw on a reserve fund the restoration of which is a moral but not a legal obligation of the state or municipality which created the issuer. Municipal lease obligations are not guaranteed by the issuer and are generally less liquid than other securities. Municipal lease obligations also are subject to the risk that the municipality will not appropriate funds for lease payments.

There may be less information available on the financial condition of issuers of Municipal Securities than for public corporations. The market for municipal bonds may be less liquid than for taxable bonds. This means that it may be harder to buy and sell Municipal Securities, especially on short notice.

The fund may invest up to 20% of its assets in bonds the interest on which may be subject to the Federal Alternative Minimum Tax. Interest on these bonds that is received by taxpayers subject to the Federal Alternative Minimum Tax is taxable.

The fund may, from time to time, invest up to 25% of its assets in securities whose issuers are located in a single state. These investments would make the fund more dependent upon the political and economic circumstances of that state than a mutual fund that invests more broadly.

The fund may invest 25% or more of its assets in Municipal Securities whose interest is paid solely from revenues of similar projects. For example, the fund may invest more than 25% of its assets in Municipal Securities related to water or sewer systems. This type of concentration exposes the fund to the legal and economic risks relating to those projects.

The fund will rely on legal opinions of counsel to issuers of Municipal Securities as to the tax-free status of investments and will not do its own analysis.

The fund may purchase variable and floating rate instruments. The absence of an active market for these securities could make it difficult for the fund to dispose of them if the issuer defaults.

IMPORTANT DEFINITIONS

Advisory Fees: Fees paid to the investment adviser for portfolio management services.

Other Expenses: Include administration, transfer agency, custody, professional fees and registration fees.

Risk / Return Information

As of 12/31

ANNUAL TOTAL RETURNS*

LOGO

As of 12/31/05

AVERAGE ANNUAL TOTAL RETURNS*


	1 Year		3 Years		5 Years		10 Years		Inception Date¹
Municipal MM
Return Before Taxes	2.06	%	1.24	%	1.52	%	2.42	%	11/01/89

The chart and the table both assume reinvestment of dividends and distributions.

Inception date of the fund’s oldest class(es).

Expenses and Fees

As a shareholder you pay certain fees and expenses. Annual fund operating expenses are paid out of fund assets.

Annual Fund Operating Expenses

(Expenses that are deducted from fund assets)


Advisory fees		.45%
Other expenses		.18%
Total annual fund operating expenses		.63%
Fee waivers and expense reimbursements*		.21%
Net expenses*		.42%

BlackRock has contractually agreed to waive or reimburse fees or expenses in order to limit Institutional class expenses to .42% of average daily net assets until February 1, 2007. The fund may have to repay some of these waivers and reimbursements to BlackRock in the following two years. See the “Management” section for a discussion of these waivers and reimbursements.

Example:


	1 Year		3 Years		5 Years		10 Years
Institutional Class	$	43	$	181	$	330	$	766

Financial Highlights

FINANCIAL HIGHLIGHTS

(For an Institutional Share Outstanding Throughout Each Period)

Municipal Money Market Portfolio



	Year Ended 9/30/05			Year Ended 9/30/04			Year Ended 9/30/03¹			Year Ended 9/30/02¹			Year Ended 9/30/01¹
Net asset value at beginning of period	$	1.00		$	1.00		$	1.00		$	1.00		$	1.00

Income from investment operations
Net investment income		0.0172			0.0073			0.0092			0.0142			0.0315

Total from investment operations		0.0172			0.0073			0.0092			0.0142			0.0315

Less distributions
Distributions from net investment income		(0.0172	)		(0.0073	)		(0.0092	)		(0.0142	)		(0.0315	)

Total distributions		(0.0172	)		(0.0073	)		(0.0092	)		(0.0142	)		(0.0315	)

Net asset value at end of period	$	1.00		$	1.00		$	1.00		$	1.00		$	1.00

Total return		1.74	%		0.73	%		0.92	%		1.43	%		3.19	%
Ratios/Supplemental data
Net assets at end of period (in thousands)	$	75,789		$	126,534		$	437,613		$	428,743		$	491,052
Ratios of expenses to average net assets
Net expenses		0.42	%		0.42	%		0.42	%		0.42	%		0.42	%
Total expenses		0.74	%		0.71	%		0.71	%		0.70	%		0.69	%
Ratios of net investment income to average net assets
After advisory/administration fee waivers		1.69	%		0.69	%		0.92	%		1.41	%		3.11	%
Before advisory/administration fee waivers		1.37	%		0.41	%		0.64	%		1.13	%		2.83	%

Audited by other auditors.

BlackRock

New Jersey Municipal Money Market Portfolio

IMPORTANT DEFINITIONS

General Obligation Bonds: Bonds which are secured by the issuer’s pledge of its full faith, credit and taxing power for the payment of principal and interest.

Liquidity: Liquidity is the ability to easily convert investments into cash without losing a significant amount of money in the process.

Municipal Lease Obligations: These provide participation in municipal lease agreements and installment purchase contracts, but are not part of the general obligations of the municipality.

Municipal Security: A short-term obligation issued by or on behalf of states, possessions and territories of the United States, their political subdivisions and their agencies and authorities.

Net Asset Value (NAV): The value of everything the fund owns, minus everything it owes, divided by the number of shares held by investors.

Tax-Exempt Commercial Paper: Short-term Municipal Securities with maturities of 1 to 270 days.

Variable or Floating Rate Securities: Securities whose interest rates adjust automatically after a certain period of time and/or whenever a predetermined standard interest rate changes.

Investment Goal

The fund seeks as high a level of current income exempt from Federal income tax and, to the extent possible, New Jersey state income tax, as is consistent with maintaining liquidity and stability of principal.

Primary Investment Strategies

In pursuit of this goal, the fund invests primarily in Municipal Securities of issuers located in New Jersey.

Specifically, the fund may invest in:

1)	Fixed and variable rate notes and similar debt instruments rated MIG-2, VMIG-2 or Prime-2 or higher by Moody’s, SP-2 or A-2 or higher by Standard & Poor’s or F-2 or higher by Fitch.

2)	Tax-exempt commercial paper and similar debt instruments rated Prime-2 or higher by Moody’s, A-2 or higher by Standard & Poor’s or F-2 or higher by Fitch.

3)	Municipal bonds rated A or higher by Moody’s, Standard & Poor’s or Fitch.

4)	Unrated notes, paper and other instruments that are determined by the fund manager to be of comparable quality to the instruments described above.

The fund seeks to maintain a net asset value of $1.00 per share.

The fund normally invests at least 80% of its assets in Municipal Securities and other instruments whose interest is exempt from regular Federal income tax and New Jersey state income tax. The other 20% of its assets can be invested in securities of non-municipal issuers the income from which the fund manager believes is exempt from regular Federal income tax and/or New Jersey state income tax and securities which are subject to regular Federal income tax and New Jersey state income tax. Interest income from the fund’s investments may be subject to the Federal Alternative Minimum Tax.

In addition, the fund normally invests at least 80% of its assets in New Jersey Municipal Securities and other obligations which are statutorily free from state and local taxation under the laws of New Jersey or the United States in order to qualify as a “qualified investment fund” under New Jersey law. The fund may invest in Municipal Securities of issuers located outside of New Jersey the interest from which is exempt from regular Federal income tax and New Jersey state income tax.

Quality

Maturity

Normally, the fund may hold up to 20% of its assets in uninvested cash reserves. Uninvested cash will not earn income. It is possible that in extreme market conditions the fund may invest more than 20% of its assets in securities that are not Municipal Securities (and therefore are subject to regular Federal income tax and New Jersey state income tax) and may hold an unlimited amount of uninvested cash reserves. If market conditions improve, these strategies could result in reducing the potential gain from the market upswing, thus reducing the fund’s opportunity to achieve its investment goal.

Should the Fund’s Board of Trustees determine that the investment goal of the fund should be changed, shareholders will be given at least 30 days notice before any such change is made. However, such change can be effected without shareholder approval. The fund may not change the requirement that it normally invest at least 80% of its assets in Municipal Securities and other instruments whose interest is exempt from regular Federal income tax and New Jersey state income tax without shareholder approval.

Key Risks

The fund concentrates its investments in securities of issuers located in New Jersey and is non-diversified under the Investment

Company Act. This raises special concerns because performance is more dependent upon the performance of a smaller number of securities and issuers than in a diversified portfolio. The change in value of any one security may affect the overall value of the fund more than it would in a diversified portfolio. In particular, changes in the economic conditions and governmental policies of New Jersey and its political subdivisions, including as a result of legislation or litigation changing the taxation of Municipal Securities or the rights of Municipal Security holders in the event of bankruptcy, could hurt the value of the fund’s shares.

Municipal Securities include revenue bonds, general obligation bonds and municipal lease obligations. Revenue bonds include private activity bonds, which are not payable from the general revenues of the issuer. Consequently, the credit quality of private activity bonds is usually directly related to the credit standing of the corporate user of the facility involved. To the extent that the fund’s assets are invested in private activity bonds, the fund will be subject to the particular risks presented by the laws and economic conditions relating to such projects and bonds to a greater extent than if its assets were not so invested. Municipal Securities also include moral obligation bonds, which are normally issued by special purpose public authorities. If the issuer of moral obligation bonds is unable to pay its debts from current revenues, it may draw on a reserve fund the restoration of which is a moral but not a legal obligation of the state or municipality which created the issuer. Municipal lease obligations are not guaranteed by the issuer and are generally less liquid than other securities. Municipal lease obligations also are subject to the risk that the municipality will not appropriate funds for lease payments.

The fund may invest without limit in bonds the interest on which may be subject to the Federal Alternative Minimum Tax. Interest on these bonds that is received by taxpayers subject to the Federal Alternative Minimum Tax is taxable.

The fund will rely on legal opinions of counsel to issuers of Municipal Securities as to the tax-free status of investments and will not do its own analysis.

The fund may purchase variable and floating rate instruments. The absence of an active market for these securities could make it difficult for the fund to dispose of them if the issuer defaults.

Risk / Return Information

The performance for the period before Institutional Shares were launched in January 1996 is based upon performance for Service Shares of the fund, which were first issued in July 1991. Institutional Shares of the fund are expected to have expenses of .39% of average daily net assets (after waivers and reimbursements) for the current fiscal year and Service Shares of the fund are expected to have expenses of .67% of average daily net assets (after waivers and reimbursements) for the current fiscal year. If BlackRock and its affiliates had not waived or reimbursed certain fund expenses during these periods, the fund’s returns would have been lower.

As of 12/31

ANNUAL TOTAL RETURNS*

LOGO

As of 12/31/05

AVERAGE ANNUAL TOTAL RETURNS*


	1 Year		3 Years		5 Years		10 Years		Inception Date¹
NJ Municipal MM
Return Before Taxes	2.07	%	1.24	%	1.49	%	2.37	%	07/01/91

The chart and the table both assume reinvestment of dividends and distributions.

Inception date of the fund’s oldest class(es).

IMPORTANT DEFINITIONS

Advisory Fees: Fees paid to the investment adviser for portfolio management services.

Other Expenses: Include administration, transfer agency, custody, professional fees and registration fees.

Expenses and Fees

As a shareholder you pay certain fees and expenses. Annual fund operating expenses are paid out of fund assets.

Annual Fund Operating Expenses

(Expenses that are deducted from fund assets)


Advisory fees	.45	%
Other expenses	.18	%
Total annual fund operating expenses	.63	%
Fee waivers and expense reimbursements*	.24	%
Net expenses*	.39	%

BlackRock has contractually agreed to waive or reimburse fees or expenses in order to limit Institutional class expenses to .39% of average daily net assets until February 1, 2007. The fund may have to repay some of these waivers and reimbursements to BlackRock in the following two years. See the “Management” section for a discussion of these waivers and reimbursements.

Example:


	1 Year		3 Years		5 Years		10 Years
Institutional Class	$	40	$	178	$	327	$	763

Financial Highlights

FINANCIAL HIGHLIGHTS

(For an Institutional Share Outstanding Throughout Each Period)

New Jersey Municipal

Money Market Portfolio



	Year Ended 9/30/05			Year Ended 9/30/04			Year Ended 9/30/03¹			Years Ended 9/30/02¹			Year Ended 9/30/01¹
Net asset value at beginning of period	$	1.00		$	1.00		$	1.00		$	1.00		$	1.00

Income from investment operations
Net investment income		0.0175			0.0074			0.0089			0.0134			0.0305

Total from investment operations		0.0175			0.0074			0.0089			0.0134			0.0305

Less distributions
Distributions from net investment income		(0.0175	)		(0.0074	)		(0.0089	)		(0.0134	)		(0.0305	)

Total distributions		(0.0175	)		(0.0074	)		(0.0089	)		(0.0134	)		(0.0305	)

Net asset value at end of period	$	1.00		$	1.00		$	1.00		$	1.00		$	1.00

Total return		1.76	%		0.74	%		0.89	%		1.35	%		3.10	%
Ratios/Supplemental data
Net assets at end of period (in thousands)	$	74,329		$	80,530		$	77,267		$	86,573		$	97,007
Ratios of expenses to average net assets
Net expenses		0.39	%		0.39	%		0.39	%		0.39	%		0.39	%
Total expenses		0.74	%		0.72	%		0.72	%		0.71	%		0.70	%
Ratios of net investment income to average net assets
After advisory/administration fee waivers		1.73	%		0.74	%		0.89	%		1.34	%		3.03	%
Before advisory/administration fee waivers		1.38	%		0.40	%		0.56	%		1.02	%		2.72	%

Audited by other auditors.

BlackRock

North Carolina Municipal Money Market Portfolio

IMPORTANT DEFINITIONS

General Obligation Bonds: Bonds which are secured by the issuer’s pledge of its full faith, credit and taxing power for the payment of principal and interest.

Liquidity: Liquidity is the ability to easily convert investments into cash without losing a significant amount of money in the process.

Municipal Lease Obligations: These provide participation in municipal lease agreements and installment purchase contracts, but are not part of the general obligations of the municipality.

Municipal Security: A short-term obligation issued by or on behalf of states, possessions and territories of the United States, their political subdivisions and their agencies and authorities.

Net Asset Value (NAV): The value of everything the fund owns, minus everything it owes, divided by the number of shares held by investors.

Tax-Exempt Commercial Paper: Short-term Municipal Securities with maturities of 1 to 270 days.

Variable or Floating Rate Securities: Securities whose interest rates adjust automatically after a certain period of time and/or whenever a predetermined standard interest rate changes.

Investment Goal

The fund seeks as high a level of current income exempt from Federal income tax and, to the extent possible, North Carolina state income tax, as is consistent with maintaining liquidity and stability of principal.

Primary Investment Strategies

In pursuit of this goal, the fund invests primarily in Municipal Securities of issuers located in North Carolina.

Specifically, the fund may invest in:

1)	Fixed and variable rate notes and similar debt instruments rated MIG-2, VMIG-2 or Prime-2 or higher by Moody’s, SP-2 or A-2 or higher by Standard & Poor’s or F-2 or higher by Fitch.

2)	Tax-exempt commercial paper and similar debt instruments rated Prime-2 or higher by Moody’s, A-2 or higher by Standard & Poor’s or F-2 or higher by Fitch.

3)	Municipal bonds rated A or higher by Moody’s, Standard & Poor’s or Fitch.

4)	Unrated notes, paper and other instruments that are determined by the fund manager to be of comparable quality to the instruments described above.

The fund seeks to maintain a net asset value of $1.00 per share.

The fund normally invests at least 80% of its net assets in Municipal Securities and other instruments whose interest is exempt from regular Federal income tax and North Carolina state income tax. The other 20% of its assets can be invested in securities of non-municipal issuers the income from which the fund manager believes is exempt from regular Federal income tax and/or North Carolina state income tax and securities which are subject to regular Federal income tax and North Carolina state income tax. Interest income from the fund’s investments may be subject to the Federal Alternative Minimum Tax. The fund may invest in Municipal Securities of issuers located outside of North Carolina the interest from which is exempt from regular Federal income tax and North Carolina state income tax.

Quality

The fund manager, under guidelines established by the Fund’s Board of Trustees, will only purchase securities that have short- term debt ratings at the time of purchase in the two highest rating categories from at least two national rating agencies, or one such rating if the security is rated by only one agency. Securities that do not have a short-term rating must be determined by the fund manager to be of comparable quality.

Maturity

Normally, the fund may hold up to 20% of its assets in uninvested cash reserves. Uninvested cash will not earn income. It is possible that in extreme market conditions the fund may invest more than 20% of its assets in securities that are not Municipal Securities (and therefore are subject to regular Federal income tax and North Carolina state income tax) and may hold an unlimited amount of uninvested cash reserves. If market conditions improve, these strategies could result in reducing the potential gain from the market upswing, thus reducing the fund’s opportunity to achieve its investment goal.

Should the Fund’s Board of Trustees determine that the investment goal of the fund should be changed, shareholders will be given at least 30 days notice before any such change is made. However, such change can be effected without shareholder approval. The fund may not change the requirement that it normally invest at least 80% of its net assets in Municipal Securities and other instruments whose interest is exempt from regular Federal income tax and North Carolina state income tax without shareholder approval.

Key Risks

The value of money market investments tends to fall when prevailing interest rates rise, when an issuer’s creditworthiness, declines or when the rate of inflation increases, although they’re generally less sensitive to such changes than longer-term securities.

The fund concentrates its investments in securities of issuers located in North Carolina and is non-diversified under the Investment Company Act. This raises special concerns because performance is more dependent upon the performance of a smaller number of securities and issuers than in a diversified portfolio. The change in value of any one security may affect the

overall value of the fund more than it would in a diversified portfolio. In particular, changes in the economic conditions and governmental policies of North Carolina and its political subdivisions, including as a result of legislation or litigation changing the taxation of Municipal Securities or the rights of Municipal Security holders in the event of bankruptcy, could hurt the value of the fund’s shares.

The fund will rely on legal opinions of counsel to issuers of Municipal Securities as to the tax-free status of investments and will not do its own analysis.

The fund may purchase variable and floating rate instruments. The absence of an active market for these securities could make it difficult for the fund to dispose of them if the issuer defaults.

Risk / Return Information

As of 12/31

ANNUAL TOTAL RETURNS*

LOGO

As of 12/31/05

AVERAGE ANNUAL TOTAL RETURNS*


	1 Year	3 Years	5 Years	10 Years	Inception Date¹
NC Municipal MM
Return Before Taxes	2.19%	1.34%	1.57%	2.47%	05/03/93

The chart and the table both assume reinvestment of dividends and distributions.

Inception date of the fund’s oldest class(es).

IMPORTANT DEFINITIONS

Advisory Fees: Fees paid to the investment adviser for portfolio management services.

Other Expenses: Include administration, transfer agency, custody, professional fees and registration fees.

Expenses and Fees

As a shareholder you pay certain fees and expenses. Annual fund operating expenses are paid out of fund assets.

Annual Fund Operating Expenses

(Expenses that are deducted from fund assets)


Advisory fees	.45	%
Other expenses	.23	%
Total annual fund operating expenses	.68	%
Fee waivers and expense reimbursements*	.38	%
Net expenses*	.30	%

BlackRock has contractually agreed to waive or reimburse fees or expenses in order to limit Institutional class expenses to .30% of average daily net assets until February 1, 2007. The fund may have to repay some of these waivers and reimbursements to BlackRock in the following two years. See the “Management” section for a discussion of these waivers and reimbursements.

Example:


	1 Year		3 Years		5 Years		10 Years
Institutional Class	$	31	$	179	$	341	$	811

Financial Highlights

FINANCIAL HIGHLIGHTS

(For an Institutional Share Outstanding Throughout Each Period)

North Carolina Municipal

Money Market Portfolio



	Year Ended 9/30/05			Year Ended 9/30/04			Year Ended 9/30/03¹			Year Ended 9/30/02¹			Year Ended 9/30/01¹
Net asset value at beginning of period	$	1.00		$	1.00		$	1.00		$	1.00		$	1.00

Income from investment operations
Net investment income		0.0185			0.0084			0.0097			0.0134			0.0313

Total from investment operations		0.0185			0.0084			0.0097			0.0134			0.0313

Less distributions
Distributions from net investment income		(0.0185	)		(0.0084	)		(0.0097	)		(0.0134	)		(0.0313	)

Total distributions		(0.0185	)		(0.0084	)		(0.0097	)		(0.0134	)		(0.0313	)

Net asset value at end of period	$	1.00		$	1.00		$	1.00		$	1.00		$	1.00

Total return		1.87	%		0.85	%		0.97	%		1.35	%		3.18	%
Ratios/Supplemental data
Net assets at end of period (in thousands)	$	56,017		$	58,168		$	162,465		$	156,476		$	115,139
Ratios of expenses to average net assets
Net expenses		0.30	%		0.30	%		0.30	%		0.30	%		0.30	%
Total expenses		0.80	%		0.74	%		0.74	%		0.72	%		0.70	%
Ratios of net investment income to average net assets
After advisory/administration fee waivers		1.84	%		0.84	%		0.96	%		1.32	%		3.10	%
Before advisory/administration fee waivers		1.34	%		0.40	%		0.53	%		0.90	%		2.70	%

Audited by other auditors.

BlackRock

Ohio Municipal Money Market Portfolio

IMPORTANT DEFINITIONS

General Obligation Bonds: Bonds which are secured by the issuer’s pledge of its full faith, credit and taxing power for the payment of principal and interest.

Liquidity: Liquidity is the ability to easily convert investments into cash without losing a significant amount of money in the process.

Municipal Lease Obligations: These provide participation in municipal lease agreements and installment purchase contracts, but are not part of the general obligations of the municipality.

Municipal Security: A short-term obligation issued by or on behalf of states, possessions and territories of the United States, their political subdivisions and their agencies and authorities.

Net Asset Value (NAV): The value of everything the fund owns, minus everything it owes, divided by the number of shares held by investors.

Tax-Exempt Commercial Paper: Short-term Municipal Securities with maturities of 1 to 270 days.

Variable or Floating Rate Securities: Securities whose interest rates adjust automatically after a certain period of time and/or whenever a predetermined standard interest rate changes.

Investment Goal

The fund seeks as high a level of current income exempt from Federal income tax and, to the extent possible, Ohio state income tax, as is consistent with maintaining liquidity and stability of principal.

Primary Investment Strategies

In pursuit of this goal, the fund invests primarily in Municipal Securities of issuers located in Ohio.

Specifically, the fund may invest in:

1)	Fixed and variable rate notes and similar debt instruments rated MIG-2, VMIG-2 or Prime-2 or higher by Moody’s, SP-2 or A-2 or higher by Standard & Poor’s or F-2 or higher by Fitch.

2)	Tax-exempt commercial paper and similar debt instruments rated Prime-2 or higher by Moody’s, A-2 or higher by Standard & Poor’s or F-2 or higher by Fitch.

3)	Municipal bonds rated A or higher by Moody’s Standard & Poor’s or Fitch.

4)	Unrated notes, paper and other instruments that are determined by the fund manager to be of comparable quality to the instruments described above.

The fund seeks to maintain a net asset value of $1.00 per share.

The fund normally invests at least 80% of its net assets in Municipal Securities and other instruments whose interest is exempt from regular Federal income tax and Ohio state income tax. The other 20% of its assets can be invested in securities of non-municipal issuers the income from which the fund manager believes is exempt from regular Federal income tax and/or Ohio state income tax and securities which are subject to regular Federal income tax and Ohio state income tax. Interest income from the fund’s investments may be subject to the Federal Alternative Minimum Tax. The fund may invest in Municipal Securities of issues located outside of Ohio, the interest from which is exempt from regular Federal income tax and Ohio state income tax.

Quality

Maturity

The fund is managed so that the dollar weighted average maturity of all its investments will be 90 days or less. The fund will buy only those securities which have remaining maturities of 397 days or less (except for certain variable and floating rate instruments and securities collateralizing repurchase agreements). The fund’s securities may not earn as high a level of income as longer term or lower quality securities, which generally have greater risk and fluctuate more in value.

Normally, the fund may hold up to 20% of its assets in uninvested cash reserves. Uninvested cash will not earn income. It is possible that in extreme market conditions the fund may invest more than 20% of its assets in securities that are not Municipal Securities (and therefore are subject to regular Federal income tax and Ohio state income tax) and may hold an unlimited amount of uninvested cash reserves. If market conditions improve, these strategies could result in reducing the potential gain from the market upswing, thus reducing the fund’s opportunity to achieve its investment goal.

Should the Fund’s Board of Trustees determine that the investment goal of the fund should be changed, shareholders will be given at least 30 days notice before any such change is made. However, such change can be effected without shareholder approval. The fund may not change the requirement that it normally invest at least 80% of its net assets in Municipal Securities and other instruments whose interest is exempt from regular Federal income tax and Ohio state income tax without shareholder approval.

Key Risks

The fund concentrates its investments in securities of issuers located in Ohio and is non-diversified under the Investment Company Act. This raises special concerns because performance is more dependent upon the performance of a smaller number of securities and issuers than in a diversified portfolio. The change in value of any one security may affect the overall value of the fund

more than it would in a diversified portfolio. In particular, changes in the economic conditions and governmental policies of Ohio and its political subdivisions, including as a result of legislation or litigation changing the taxation of Municipal Securities or the rights of Municipal Security holders in the event of bankruptcy, could hurt the value of the fund’s shares.

The fund will rely on legal opinions of counsel to issuers of Municipal Securities as to the tax-free status of investments and will not do its own analysis.

The fund may purchase variable and floating rate instruments. The absence of an active market for these securities could make it difficult for the fund to dispose of them if the issuer defaults.

Risk / Return Information

As of 12/31

ANNUAL TOTAL RETURNS*

LOGO

As of 12/31/05

AVERAGE ANNUAL TOTAL RETURNS*


	1 Year		3 Years		5 Years		10 Years		Inception Date¹
OH Municipal MM
Return Before Taxes	2.16	%	1.36	%	1.65	%	2.53	%	06/01/93

The chart and the table both assume reinvestment of dividends and distributions.

Inception date of the fund’s oldest class(es).

IMPORTANT DEFINITIONS

Advisory Fees: Fees paid to the investment adviser for portfolio management services.

Other Expenses: Include administration, transfer agency, custody, professional fees and registration fees.

Expenses and Fees

As a shareholder you pay certain fees and expenses. Annual fund operating expenses are paid out of fund assets.

Annual Fund Operating Expenses

(Expenses that are deducted from fund assets)


Advisory fees		.45%
Other expenses		.17%
Total annual fund operating expenses		.62%
Fee waivers and expense reimbursements*		.23%
Net expenses*		.39%

Example:


	1 Year		3 Years		5 Years		10 Years
Institutional Class	$	40	$	175	$	323	$	752

Financial Highlights

FINANCIAL HIGHLIGHTS

(For an Institutional Share Outstanding Throughout Each Period)

Ohio Municipal Money Market Portfolio



	Year Ended 9/30/05			Year Ended 9/30/04			Year Ended 9/30/03¹			Year Ended 9/30/02¹			Year Ended 9/30/01¹
Net asset value at beginning of period	$	1.00		$	1.00		$	1.00		$	1.00		$	1.00

Income from investment operations
Net investment income		0.0182			0.0087			0.0105			0.0154			0.0331

Total from investment operations		0.0182			0.0087			0.0105			0.0154			0.0331

Less distributions
Distributions from net investment income		(0.0182	)		(0.0087	)		(0.0105	)		(0.0154	)		(0.0331	)

Total distributions		(0.0182	)		(0.0087	)		(0.0105	)		(0.0154	)		(0.0331	)

Net asset value at end of period	$	1.00		$	1.00		$	1.00		$	1.00		$	1.00

Total return		1.83	%		0.87	%		1.06	%		1.55	%		3.36	%
Ratios/Supplemental data
Net assets at end of period (in thousands)	$	88,697		$	122,030		$	94,936		$	104,426		$	77,620
Ratios of expenses to average net assets
Net expenses		0.39	%		0.39	%		0.39	%		0.39	%		0.39	%
Total expenses		0.73	%		0.72	%		0.72	%		0.72	%		0.71	%
Ratios of net investment income to average net assets
After advisory/administration fee waivers		1.79	%		0.87	%		1.05	%		1.52	%		3.31	%
Before advisory/administration fee waivers		1.45	%		0.54	%		0.71	%		1.19	%		2.98	%

Audited by other auditors.

BlackRock

Pennsylvania Municipal Money Market Portfolio

IMPORTANT DEFINITIONS

General Obligation Bonds: Bonds which are secured by the issuer’s pledge of its full faith, credit and taxing power for the payment of principal and interest.

Liquidity: Liquidity is the ability to easily convert investments into cash without losing a significant amount of money in the process.

Municipal Lease Obligations: These provide participation in municipal lease agreements and installment purchase contracts, but are not part of the general obligations of the municipality.

Municipal Security: A short term obligation issued by or on behalf of states, possessions and territories of the United States, their political subdivisions and their agencies and authorities.

Net Asset Value (NAV): The value of everything the fund owns, minus everything it owes, divided by the number of shares held by investors.

Tax-Exempt Commercial Paper: Short-term Municipal Securities with maturities of 1 to 270 days.

Variable or Floating Rate Securities: Securities whose interest rates adjust automatically after a certain period of time and/or whenever a predetermined standard interest rate changes.

Investment Goal

The fund seeks as high a level of current income exempt from Federal income tax and, to the extent possible, Pennsylvania state income tax, as is consistent with maintaining liquidity and stability of principal.

Primary Investment Strategies

In pursuit of this goal, the fund invests primarily in Municipal Securities of issuers located in Pennsylvania.

Specifically, the fund may invest in:

1)	Fixed and variable rate notes and similar debt instruments rated MIG-2, VMIG-2 or Prime-2 or higher by Moody’s, SP-2 or A-2 or higher by Standard & Poor’s or F-2 or higher by Fitch.

2)	Tax-exempt commercial paper and similar debt instruments rated Prime-2 or higher by Moody’s, A-2 or higher by Standard & Poor’s or F-2 or higher by Fitch.

3)	Municipal bonds rated A or higher by Moody’s, Standard & Poor’s or Fitch.

4)	Unrated notes, paper and other instruments that are determined by the fund manager to be of comparable quality to the instruments described above.

The fund seeks to maintain a net asset value of $1.00 per share.

The fund normally invests at least 80% of its net assets in Municipal Securities and other instruments whose interest is exempt from regular Federal income tax and Pennsylvania state income tax. The other 20% of its assets can be invested in securities of non-municipal issuers the income from which the fund manager believes is exempt from regular Federal income tax and/or Pennsylvania state income tax and securities which are subject to regular Federal income tax and Pennsylvania state income tax. Interest income from the fund’s investments may be subject to the Federal Alternative Minimum Tax. The fund may invest in Municipal Securities of issuers located outside of Pennsylvania the interest from which is exempt from regular Federal income tax and Pennsylvania state income tax.

Quality

Maturity

Normally, the fund may hold up to 20% of its assets in uninvested cash reserves. Uninvested cash will not earn income. It is possible that in extreme market conditions the fund may invest more than 20% of its assets in securities that are not Municipal Securities (and therefore are subject to regular Federal income tax and Pennsylvania state income tax) and may hold an unlimited amount of uninvested cash reserves. If market conditions improve, these strategies could result in reducing the potential gain from the market upswing, thus reducing the fund’s opportunity to achieve its investment goal.

Should the Fund’s Board of Trustees determine that the investment goal of the fund should be changed, shareholders will be given at least 30 days notice before any such change is made. However, such change can be effected without shareholder approval. The fund may not change the requirement that it normally invest at least 80% of its net assets in Municipal Securities and other instruments whose interest is exempt from regular Federal income tax and Pennsylvania state income tax without shareholder approval.

Key Risks

The fund concentrates its investments in securities of issuers located in Pennsylvania and is non-diversified under the Investment Company Act. This raises special concerns because performance is more dependent upon the performance of a smaller number of securities and issuers than in a diversified portfolio. The change in value of any one security may affect the

overall value of the fund more than it would in a diversified portfolio. In particular, changes in the economic conditions and governmental policies of Pennsylvania and its political subdivisions, including as a result of legislation or litigation changing the taxation of Municipal Securities or the rights of Municipal Security holders in the event of bankruptcy, could hurt the value of the fund’s shares.

The fund will rely on legal opinions of counsel to issuers of Municipal Securities as to the tax-free status of investments and will not do its own analysis.

The fund may purchase variable and floating rate instruments. The absence of an active market for these securities could make it difficult for the fund to dispose of them if the issuer defaults.

Risk / Return Information

As of 12/31

ANNUAL TOTAL RETURNS*

LOGO

As of 12/31/05

AVERAGE ANNUAL TOTAL RETURNS*


	1 Year		3 Years		5 Years		10 Years		Inception Date¹
PA Municipal MM
Return Before Taxes	2.10	%	1.26	%	1.48	%	2.39	%	06/01/93

The chart and the table both assume reinvestment of dividends and distributions.

Inception date of the fund’s oldest class(es).

IMPORTANT DEFINITIONS

Advisory Fees: Fees paid to the investment adviser for portfolio management services.

Other Expenses: Include administration, transfer agency, custody, professional fees and registration fees.

Expenses and Fees

As a shareholder you pay certain fees and expenses. Annual fund operating expenses are paid out of fund assets.

Annual Fund Operating Expenses

(Expenses that are deducted from fund assets)


Advisory fees	.45	%
Other expenses	.17	%
Total annual fund operating expenses	.62	%
Fee waivers and expense reimbursements*	.20	%
Net expenses*	.42	%

BlackRock has contractually agreed to waive or reimburse fees or expenses in order to limit Institutional class expenses to .42% of average daily net assets until February 1, 2007. The fund may have to repay some of these waivers and reimbursements to BlackRock in the following two years. See the “Management” section for a discussion of these waivers and reimbursements.

Example:


	1 Year		3 Years		5 Years		10 Years
Institutional Class	$	43	$	178	$	326	$	755

Financial Highlights

FINANCIAL HIGHLIGHTS

(For an Institutional Share Outstanding Throughout Each Period)

Pennsylvania Municipal

Money Market Portfolio



	Year Ended 9/30/05			Year Ended 9/30/04			Year Ended 9/30/03¹			Year Ended 9/30/02¹			Year Ended 9/30/01¹
Net asset value at beginning of period	$	1.00		$	1.00		$	1.00		$	1.00		$	1.00

Income from investment operations
Net investment income		0.0178			0.0073			0.0093			0.0131			0.0299

Total from investment operations		0.0178			0.0073			0.0093			0.0131			0.0299

Less distributions
Distributions from net investment income		(0.0178	)		(0.0073	)		(0.0093	)		(0.0131	)		(0.0299	)

Total distributions		(0.0178	)		(0.0073	)		(0.0093	)		(0.0131	)		(0.0299	)

Net asset value at end of period	$	1.00		$	1.00		$	1.00		$	1.00		$	1.00

Total return		1.79	%		0.73	%		0.93	%		1.31	%		3.03	%
Ratios/Supplemental data
Net assets at end of period (in thousands)	$	430,376		$	426,130		$	416,412		$	466,039		$	459,885
Ratios of expenses to average net assets
Net expenses		0.42	%		0.42	%		0.42	%		0.42	%		0.42	%
Total expenses		0.72	%		0.71	%		0.71	%		0.70	%		0.69	%
Ratios of net investment income to average net assets
After advisory/administration fee waivers		1.78	%		0.73	%		0.93	%		1.30	%		2.97	%
Before advisory/administration fee waivers		1.48	%		0.44	%		0.64	%		1.02	%		2.70	%

Audited by other auditors.

BlackRock

Virginia Municipal Money Market Portfolio

IMPORTANT DEFINITIONS

General Obligation Bonds: Bonds which are secured by the issuer’s pledge of its full faith, credit and taxing power for the payment of principal and interest.

Liquidity: Liquidity is the ability to easily convert investments into cash without losing a significant amount of money in the process.

Municipal Lease Obligations: These provide participation in municipal lease agreements and installment purchase contracts, but are not part of the general obligations of the municipality.

Municipal Security: A short-term obligation issued by or on behalf of states, possessions and territories of the United States, their political subdivisions and their agencies and authorities.

Net Asset Value (NAV): The value of everything the fund owns, minus everything it owes, divided by the number of shares held by investors.

Investment Goal

The fund seeks as high a level of current income exempt from Federal income tax and, to the extent possible, Virginia state income tax, as is consistent with maintaining liquidity and stability of principal.

Primary Investment Strategies

In pursuit of this goal, the fund invests primarily in Municipal Securities of issuers located in Virginia.

Specifically, the fund may invest in:

1)	Fixed and variable rate notes and similar debt instruments rated MIG-2, VMIG-2 or Prime-2 or higher by Moody’s, SP-2 or A-2 or higher by Standard & Poor’s or F-2 or higher by Fitch.

2)	Tax-exempt commercial paper and similar debt instruments rated Prime-2 or higher by Moody’s, A-2 or higher by Standard & Poor’s or F-2 or higher by Fitch.

3)	Municipal bonds rated A or higher by Moody’s, Standard & Poor’s or Fitch.

4)	Unrated notes, paper and other instruments that are determined by the fund manager to be of comparable quality to the instruments described above.

The fund seeks to maintain a net asset value of $1.00 per share.

The fund normally invests at least 80% of its net assets in Municipal Securities and other instruments whose interest is exempt from regular Federal income tax and Virginia state income tax. The other 20% of its assets can be invested in securities of non-municipal issuers the income from which the fund manager believes is exempt from regular Federal income tax and/or Virginia state income tax and securities which are subject to regular Federal income tax and Virginia state income tax. Interest income from the fund’s investments may be subject to the Federal Alternative Minimum Tax. The fund may invest in Municipal Securities of issuers located outside of Virginia the interest from which is exempt from regular Federal income tax and Virginia state income tax.

The securities purchased by the fund are subject to the quality, diversification and other requirements of Rule 2a-7 under the Investment Company and other rules of the Securities and Exchange Commission.

IMPORTANT DEFINITIONS

Tax-Exempt Commercial Paper: Short-term Municipal Securities with maturities of 1 to 270 days.

Variable or Floating Rate Securities: Securities whose interest rates adjust automatically after a certain period of time and/or whenever a predetermined standard interest rate changes.

Quality

The fund manager, under guidelines established by the Fund’s Board of Trustees, will only purchase securities that have short- term debt ratings at the time of purchase in the two highest rating categories from at least two national rating agencies, or one such rating if the security is rated by only one agency. Securities that do not have a short-term rating must be determined by the fund manager to be of comparable quality.

Maturity

Normally, the fund may hold up to 20% of its assets in uninvested cash reserves. Uninvested cash will not earn income. It is possible that in extreme market conditions the fund may invest more than 20% of its assets in securities that are not Municipal Securities (and therefore are subject to regular Federal income tax and Virginia state income tax) and may hold an unlimited amount of uninvested cash reserves. If market conditions improve, these strategies could result in reducing the potential gain from the market upswing, thus reducing the fund’s opportunity to achieve its investment goal.

Should the Fund’s Board of Trustees determine that the investment goal of the fund should be changed, shareholders will be given at least 30 days notice before any such change is made. However, such change can be effected without shareholder approval. The fund may not change the requirement that it normally invest at least 80% of its net assets in Municipal Securities and other instruments whose interest is exempt from regular Federal income tax and Virginia state income tax without shareholder approval.

Key Risks

The value of money market instruments tends to fall when prevailing interest rates rise, when an issuer’s creditworthiness declines or when the rate of inflation increases, although they’re generally less sensitive to such changes than longer-term securities.

The fund concentrates its investments in securities of issuers located in Virginia and is non-diversified under the Investment Company Act. This raises special concerns because performance is more dependent upon the performance of a smaller number of securities and issuers than in a diversified portfolio. The change in value of any one security may affect the overall value of the fund

more than it would in a diversified portfolio. In particular, changes in the economic conditions and governmental policies of Virginia and its political subdivisions, including as a result of legislation or litigation changing the taxation of Municipal Securities or the rights of Municipal Security holders in the event of bankruptcy, could hurt the value of the fund’s shares.

The fund will rely on legal opinions of counsel to issuers of Municipal Securities as to the tax-free status of investments and will not do its own analysis.

The fund may purchase variable and floating rate instruments. The absence of an active market for these securities could make it difficult for the fund to dispose of them if the issuer defaults.

Risk / Return Information

As of 12/31

ANNUAL TOTAL RETURNS*

LOGO

As of 12/31/05

AVERAGE ANNUAL TOTAL RETURNS*


	1 Year	3 Years	5 Years	10 Years	Inception Date¹
VA Municipal MM
Return Before Taxes	2.15%	1.31%	1.59%	2.52%	07/25/94

The chart and the table both assume reinvestment of dividends and distributions.

Inception date of the fund’s oldest class(es).

IMPORTANT DEFINITIONS

Advisory Fees: Fees paid to the investment adviser for portfolio management services.

Other Expenses: Include administration, transfer agency, custody, professional fees and registration fees.

Expenses and Fees

As a shareholder you pay certain fees and expenses. Annual fund operating expenses are paid out of fund assets.

Annual Fund Operating Expenses

(Expenses that are deducted from fund assets)


Advisory fees		.45%
Other expenses		.35%
Total annual fund operating expenses		.80%
Fee waivers and expense reimbursements*		.50%
Net expenses*		.30%

Example:


	1 Year		3 Years		5 Years		10 Years
Institutional Class	$	31	$	205	$	395	$	943

Financial Highlights

FINANCIAL HIGHLIGHTS

(For an Institutional Share Outstanding Throughout Each Period)

Virginia Municipal

Money Market Portfolio



	Year Ended 9/30/05			Year Ended 9/30/04			Year Ended 9/30/03¹			Year Ended 9/30/02¹			Year Ended 9/30/01¹
Net asset value at beginning of period	$	1.00		$	1.00		$	1.00		$	1.00		$	1.00

Income from investment operations
Net investment income		0.0181			0.0082			0.0094			0.0144			0.0323

Total from investment operations		0.0181			0.0082			0.0094			0.0144			0.0323

Less distributions
Distributions from net investment income		(0.0181	)		(0.0082	)		(0.0094	)		(0.0144	)		(0.0323	)

Total distributions		(0.0181	)		(0.0082	)		(0.0094	)		(0.0144	)		(0.0323	)

Net asset value at end of period	$	1.00		$	1.00		$	1.00		$	1.00		$	1.00

Total return		1.83	%		0.82	%		0.95	%		1.45	%		3.28	%
Ratios/Supplemental data
Net assets at end of period (in thousands)	$	24,169		$	17,857		$	21,963		$	19,808		$	53,823
Ratios of expenses to average net assets
Net expenses		0.30	%		0.30	%		0.30	%		0.30	%		0.30	%
Total expenses		0.92	%		0.89	%		0.75	%		0.75	%		0.73	%
Ratios of net investment income to average net assets
After advisory/administration fee waivers		1.84	%		0.83	%		0.93	%		1.50	%		3.26	%
Before advisory/administration fee waivers		1.22	%		0.23	%		0.48	%		1.06	%		2.83	%

Audited by other auditors.

About Your Investment

Buying Shares

Institutional Shares are offered without a sales charge to:

Institutional and individual investors with a minimum investment of $2 million

Trust departments of PNC Bank and its affiliates on behalf of clients for whom the bank:

acts in a fiduciary capacity (excluding participant-directed employee benefit plans)

otherwise has investment discretion or

acts as custodian for at least $2 million in assets

Registered investment advisers with a minimum investment of $250,000

Purchase orders may be placed by calling (800) 441-7762.

What Price Per Share Will You Pay?

A mutual fund is a pool of investors’ money that is used to purchase a portfolio of securities, which in turn is owned in common by the investors. Investors put money into a mutual fund by buying shares. If a mutual fund has a portfolio worth $5 million dollars and has 5 million shares outstanding, the net asset value (NAV) per share is $1.00. Although each fund described in this Prospectus seeks to maintain an NAV of $1.00 per share, there is no guarantee it will be able to do so.

The funds’ investments are valued based on the amortized cost method described in the SAI.

Institutional Shares are sold at the net asset value per share determined after an order is received by PFPC Inc., the Fund’s transfer agent. A purchase order for each fund may be made by telephoning (800) 441-7762 before 12:30 p.m. (Eastern time) on a day the New York Stock Exchange (the NYSE) and the Federal Reserve Bank of Philadelphia are open (business day). For each fund, if your order is received before 12:30 p.m. (Eastern time) on a day the NYSE and the Federal Reserve Bank of Philadelphia are open, it will be executed at 12:30 p.m. (Eastern time). If payment for such order is not received by 4 p.m. (Eastern time), the order will be cancelled. You will be informed if this should happen. No orders will be accepted after 12:30 p.m. (Eastern time).

NAV is calculated separately for each class of shares of each fund as of the close of business on the NYSE, generally 4 p.m. (Eastern time), each day the NYSE and the Federal Reserve Bank of Philadelphia are open. Shares will not be priced on days the NYSE

or the Federal Reserve Bank of Philadelphia are closed. Each fund may elect, in its discretion if it is determined to be in shareholders’ best interest, to be open on days that the NYSE is closed due to an emergency.

Certain financial institutions may buy and sell Institutional Shares on behalf of their customers. The institutions may charge a fee for this service and may impose additional conditions on owning fund shares. Shareholders should contact their institutions for more information.

Paying for Shares

Payment for Institutional Shares must normally be made in Federal funds or other funds immediately available to the Fund’s custodian. Payment may also, at the discretion of the Fund, be made in the form of securities that are permissible investments for the respective fund. If payment is not received by this time, you will be responsible for any loss to the Fund.

To help the government fight the funding of terrorism and money laundering activities, Federal law requires all financial institutions, including the Fund, to obtain, verify and record information that identifies each person who opens an account. When opening an account, you will be asked for your name, address, date of birth and other information that will allow the Fund to identify you. The Fund may also ask to see other identifying documents such as a driver’s license (for individuals) or Articles of Incorporation or other formation documents (for institutions). The Fund may use a third party to obtain and verify this information. The Fund may not be able to establish an account, or it may close your existing account and/or redeem your shares involuntarily, if you do not provide sufficient information within the relevant time periods.

How Much is the Minimum Investment?

The minimum investment for the initial purchase of Institutional Shares is:

$2 million for institutions and individuals

$250,000 for registered investment advisers

There is no minimum requirement for later investments. The Fund does not accept third party checks as payment for shares.

The Fund may permit a lower initial investment for certain investors if their purchase, combined with purchases by other investors received together by the Fund, meets the minimum

investment requirement. The Fund may reject any purchase order, modify or waive the minimum initial or subsequent investment requirements and suspend and resume the sale of any share class of any fund at any time.

Distribution and Service Plan

The Fund has adopted a plan (the Plan) that allows the Fund to pay distribution fees for the sale of its shares under Rule 12b-1 of the Investment Company Act and shareholder servicing fees for certain services provided to its shareholders.

In accordance with the Plan, Institutional shares currently do not make such payments. The Fund, however, may enter into non-Plan agreements with brokers, dealers, financial institutions and industry professionals (Service Organizations) pursuant to which the Fund will pay a Service Organization for administrative, networking, recordkeeping, sub-transfer agency and shareholder services. These non-Plan payments are in addition to, rather than in lieu of, fees the Fund pays to its transfer agent and are generally based on either (1) a percentage of the average daily net assets of Fund shareholders serviced by a Service Organization or (2) a fixed dollar amount for each account serviced by a Service Organization. The aggregate amount of these payments may be substantial.

The Plan permits BlackRock, the Distributor and their affiliates to make payments relating to distribution and sales support activities out of their past profits or other sources available to them (and not as an additional charge to the Fund). From time to time, BlackRock, the Distributor or their affiliates also may pay a portion of the fees for administrative, networking, recordkeeping, sub-transfer agency and shareholder services described above at its or their own expense and out of its or their legitimate profits. BlackRock, the Distributor and their affiliates may compensate affiliated and unaffiliated Service Organizations for the sale and distribution of shares of the Fund or for these other services to the Fund and shareholders. These payments may be a fixed dollar amount, may be based on the number of customer accounts maintained by the Service Organization, or may be based on a percentage of the value of shares sold to, or held by, customers of the Service Organization. The aggregate amount of these payments by BlackRock, the Distributor and their affiliates may be substantial. Payments by BlackRock may include amounts that are sometimes referred to as “revenue sharing” payments. In some

circumstances, these revenue sharing payments may create an incentive for a Service Organization, its employees or associated persons to recommend or sell shares of the Fund to you. Please contact your Service Organization for details about payments it may receive from the Fund or from BlackRock, the Distributor or their affiliates. For more information, see the SAI.

Selling Shares

Shareholders may place redemption orders by telephoning (800) 441-7762. Shares are redeemed at the NAV per share next determined after receipt of the redemption order. See “Market Timing and Redemption/Exchange Fees” below. The Fund, its administrators and the distributor will employ reasonable procedures to confirm that instructions communicated by telephone are genuine. The Fund and its service providers will not be liable for any loss, liability, cost or expense for acting upon telephone instructions that are reasonably believed to be genuine in accordance with such procedures.

Payment for redeemed shares for which a redemption order is received before 12:30 p.m. (Eastern time) on a business day is normally made in Federal funds wired to the redeeming shareholder on the same business day, provided that the funds’ custodian is also open for business. Payment for redemption orders received between 12:30 p.m. (Eastern time) and 4 p.m. (Eastern time) or on a day when the funds’ custodian is closed is normally wired in Federal funds on the next business day following redemption on which the funds’ custodian is open for business. With respect to the Municipal Money Market, New Jersey Municipal Money Market, North Carolina Municipal Money Market, Ohio Municipal Money Market, Pennsylvania Municipal Money Market and Virginia Municipal Money Market Portfolios, to the extent a redemption order is submitted between 12 noon and 12:30 p.m., payment normally will be wired on the same business day (provided that the funds’ custodian is open for business) up to $10 million per investor. Redemption orders in excess of $10 million per investor submitted between 12 noon and 12:30 p.m. normally will be wired on the next business day on which the funds’ custodian is open for business. The Fund reserves the right to wire redemption proceeds within seven days after receiving a redemption order if, in the judgement of the Fund, an earlier payment could adversely affect a fund.

The Fund doesn’t charge for redemptions or for wiring redemption payments.

During periods of substantial economic or market change, telephone redemptions may be difficult to complete. Redemption requests may also be mailed to BlackRock Funds, c/o PFPC, Inc., P.O. Box 9819, Providence, RI 02940.

The Fund is not responsible for the efficiency of the Federal wire system or the shareholder’s firm or bank. The Fund does not currently charge for wire transfers. The shareholder is responsible for any charges imposed by the shareholder’s bank. To change the name of the single, designated bank account to receive wire redemption proceeds, it is necessary to send a written request to BlackRock Funds, c/o PFPC, Inc., P.O. Box 9819, Providence, RI 02940.

The Fund may refuse a telephone redemption request if it believes it is advisable to do so.

Market Timing and Redemption/Exchange Fees

The Board of Trustees of the Fund has determined that the interests of long-term shareholders and the Fund’s ability to manage its investments may be adversely affected when shares are repeatedly bought, sold or exchanged in response to short-term market fluctuations—also known as “market timing.” The funds are not designed for market timing organizations or other entities using programmed or frequent purchases and sales or exchanges. The exchange privilege for Investor Shares is not intended as a vehicle for short-term trading. Excessive purchase and sale or exchange activity may interfere with portfolio management, increase expenses and taxes and may have an adverse effect on the performance of a fund and its shareholders. For example, large flows of cash into and out of a fund may require the management team to allocate a significant amount of assets to cash or other short-term investments or sell securities, rather than maintaining such assets in securities selected to achieve the fund’s investment goal. Frequent trading may cause a fund to sell securities at less favorable prices, and transaction costs, such as brokerage commissions, can reduce a fund’s performance.

A fund that invests in non-U.S. securities is subject to the risk that an investor may seek to take advantage of a delay between the change in value of the fund’s portfolio securities and the determination of the fund’s NAV as a result of different closing

times of U.S. and non-U.S. markets by buying or selling fund shares at a price that does not reflect their true value. A similar risk exists for funds that invest in securities of small capitalization companies, securities of issuers located in emerging markets or high yield securities (junk bonds) that are thinly traded and therefore may have actual values that differ from their market prices. This short-term arbitrage activity can reduce the return received by long-term shareholders. The Fund will seek to eliminate these opportunities by using fair value pricing.

The Fund discourages market timing and seeks to prevent frequent purchases and sales or exchanges of fund shares that it determines may be detrimental to a fund or long-term shareholders. The Board of Trustees has approved the policies discussed below to seek to deter market timing activity. The Board has not adopted any specific numerical restrictions on purchases, sales and exchanges of fund shares because legitimate strategies, such as asset allocation, dollar cost averaging or similar activities, may result in frequent trading of fund shares. It is not expected that shareholders would be harmed by such legitimate activities.

If the Fund believes, in its sole discretion, that your short-term trading is excessive or that you are engaging in market timing activity, it reserves the right to reject any specific purchase or exchange order. If the Fund rejects your purchase or exchange order, you will not be able to execute that transaction, and the Fund will not be responsible for any losses you therefore may suffer. In addition, any redemptions or exchanges that you make (as a result of the activity described above or otherwise) will be subject to any and all redemption/exchange fees, as described below. For transactions placed directly with the Fund, the Fund may consider the trading history of accounts under common ownership or control for the purpose of enforcing these policies. Transactions placed through the same financial intermediary on an omnibus basis may be deemed part of a group for the purpose of this policy and may be rejected in whole or in part by the Fund. Certain accounts, such as omnibus accounts and accounts at financial intermediaries, however, include multiple investors and such accounts typically provide the Fund with net purchase or redemption and exchange requests on any given day where purchases, redemptions and exchanges of shares are netted against one another and the identity of individual purchasers, redeemers and exchangers whose orders are aggregated are not known by the Fund. While the Fund monitors for market timing activity, the

Fund may be unable to identify such activities because the netting effect in omnibus accounts often makes it more difficult to locate and eliminate market timers from the funds. Identification of market timers may also be limited by operational systems and technical limitations. In the event that a financial intermediary is determined by the Fund to be engaged in market timing or other improper trading activity, the Fund’s distributor may terminate such financial intermediary’s agreement with the distributor, suspend such financial intermediary’s trading privileges or take other appropriate actions.

Each of the equity funds will automatically assess and retain a fee of 2% of the current NAV, after excluding the effect of any contingent deferred sales charges, of shares being redeemed or exchanged within 90 days of acquisition (other than those acquired through reinvestment of dividends or other distributions). Each of the High Yield Bond and International Bond Portfolios will automatically assess and retain a fee of 2% of the current NAV, after excluding the effect of any contingent deferred sales charges, of shares being redeemed or exchanged within 30 days of acquisition (other than those acquired through reinvestment of dividends or other distributions). A new 90-day period, or 30-day period, as the case may be, begins with each acquisition of shares through a purchase or exchange. For example, a series of transactions in which shares of Portfolio A are exchanged for shares of Portfolio B 20 days after the purchase of the Portfolio A shares, followed in 20 days by an exchange of the Portfolio B shares for shares of Portfolio C, will be subject to two redemption fees (one on each exchange).

The redemption/exchange fee is for the benefit of the remaining shareholders of a fund and is intended to encourage long-term investment, to compensate for transaction and other expenses caused by early redemptions and exchanges, and to facilitate portfolio management. The “first-in, first-out” method is used to determine the holding period. Under this method, the date of redemption or exchange will be compared with the earliest purchase date of shares held in the account. The Fund sells shares to some 401(k) plans, 403(b) plans, bank or trust company accounts, and accounts of certain financial institutions or intermediaries that do not apply the redemption/exchange fee to underlying shareholders, often because of administrative or systems limitations. From time to time, with the approval of the Fund, the redemption/exchange fee will not be assessed on

redemptions or exchanges by: (i) accounts of asset allocation programs or wrap programs whose trading practices are determined by the Fund not to be detrimental to a fund or long-term shareholders (e.g., model driven programs with periodic automatic portfolio rebalancing that prohibit participant-directed trading and other programs with similar characteristics); (ii) accounts of shareholders who have died or become disabled; (iii) shareholders redeeming or exchanging shares through the Fund’s Systematic Withdrawal Plan, Systematic Exchange Plan or in connection with required distributions from an IRA, 401(k) plan, 403(b) plan, or any other Internal Revenue Code Section 401 qualified retirement plan or account; (iv) shareholders executing rollovers of current investments in the Fund through qualified employee benefit plans; and (v) certain other accounts in the absolute discretion of the Fund when a shareholder can demonstrate hardship. The Fund reserves the right to modify or eliminate these waivers at any time.

There is no assurance that the methods described above will prevent market timing on other trading that may be deemed abusive.

The Fund's Rights

The Fund may:

Suspend the right of redemption if trading is halted or restricted on the NYSE or under other emergency conditions described in the Investment Company Act,

Postpone date of payment upon redemption if trading is halted or restricted on the NYSE or under other emergency conditions described in the Investment Company Act or as described in the second paragraph in the section “Selling Shares” above,

Redeem shares involuntarily in certain cases, such as when the value of a shareholder account falls below a specified level, as described below, and

Redeem shares for property other than cash if conditions exist which make cash payments undesirable in accordance with its rights under the Investment Company Act.

IMPORTANT DEFINITIONS

Adviser: The adviser of a mutual fund is responsible for the overall investment management of the fund. The adviser for BlackRock Funds is BlackRock Advisors, Inc.

Sub-Adviser: The sub-adviser of a fund is responsible for its day-to-day management and will generally make all buy and sell decisions. Sub-advisers also provide research and credit analysis. The sub-adviser for all the funds is BlackRock Institutional Management Corporation.

Accounts with Low Balances

The Fund may redeem a shareholder’s account in any fund at any time if the net asset value of the account in such fund falls below the required minimum investment as the result of a redemption. The shareholder will be notified in writing that the value of the account is less than the required amount and the shareholder will be allowed 30 days to make additional investments before the redemption is processed.

Statements

Every shareholder automatically receives quarterly account statements. In addition, for tax purposes, shareholders also receive a yearly statement describing the characteristics of any dividends or other distributions received.

Management

BlackRock Funds’ adviser is BlackRock Advisors, Inc. (BlackRock). BlackRock was organized in 1994 to perform advisory services for investment companies and is located at 100 Bellevue Parkway, Wilmington, DE 19809. BlackRock is a wholly-owned subsidiary of BlackRock, Inc., one of the largest publicly traded investment management firms in the United States with $452.7 billion of assets under management as of December 31, 2005. BlackRock, Inc. is a majority-owned indirect subsidiary of The PNC Financial Services Group, Inc., one of the largest diversified financial services companies in the United States. BlackRock Institutional Management Corporation (BIMC), an affiliate of BlackRock located at 100 Bellevue Parkway, Wilmington, DE 19809, acts as sub-adviser to the funds.

For their investment advisory and sub-advisory services, BlackRock and BIMC are entitled to fees computed daily on a fund-by-fund basis and payable monthly. For the fiscal year ended September 30, 2005, the aggregate advisory fees paid by the funds to BlackRock as a percentage of average daily net assets were:


Money Market		.24%
U.S. Treasury Money Market		.23%
Municipal Money Market		.23%
New Jersey Municipal Money Market		.20%
North Carolina Municipal Money Market		.05%
Ohio Municipal Money Market		.20%
Pennsylvania Municipal Money Market		.25%
Virginia Municipal Money Market		.00%

The maximum annual advisory fees that can be paid to BlackRock on behalf of each fund (as a percentage of average daily net assets) are as follows:


AVERAGE DAILY NET ASSETS		INVESTMENT ADVISORY FEE
First $1 billion		.450%
$1 billion-$2 billion		.400%
$2 billion-$3 billion		.375%
more than $3 billion		.350%

A discussion regarding the basis for the Board of Trustees of the Fund approving the Fund’s investment advisory contracts is available in the Fund’s semi-annual report to shareholders.

As discussed above, BlackRock has agreed contractually to cap net expenses (excluding interest expense, taxes, brokerage commissions and extraordinary expenses, if any) of each share class of each fund at the levels shown in each fund’s expense table.

To achieve this cap, BlackRock and the Fund have entered into an expense limitation agreement. The agreement sets a limit on certain of the operating expenses of each class of shares and requires BlackRock to waive or reimburse fees or expenses if these operating expenses exceed that limit.

With respect to all funds except the Money Market Portfolio, if within two years following a waiver or reimbursement, the operating expenses of a share class that previously received a waiver or reimbursement from BlackRock are less than the expense limit for that share class, the share class is required to repay BlackRock up to the amount of fees waived or expenses reimbursed under the agreement if: (1) the fund of which the share class is a part has more than $50 million in assets, (2) BlackRock or an affiliate serves as the fund’s investment adviser or administrator and (3) the Board of Trustees of the Fund has approved in advance the payments to BlackRock at the previous quarterly meeting of the Board.

Dividends and Distributions

BlackRock Funds makes two kinds of distributions to shareholders: net investment income and net realized capital gains.

Distributions of net investment income derived by a fund are declared daily and paid monthly within ten business days after the

end of the month. The Fund’s Board of Trustees may change the timing of dividend payments. Shareholders whose purchase orders are executed at 12:30 p.m. (Eastern time) receive dividends for that day. Shareholders whose redemption orders have been received by 12:30 p.m. (Eastern time) do not receive dividends for that day.

Net realized capital gains (including net short-term capital gains), if any, will be distributed by a fund at least annually at a date determined by the Fund’s Board of Trustees.

Your distributions will be reinvested at net asset value in new shares of the same class of the fund unless you instruct PFPC Inc. in writing to pay them in cash. There are no sales charges on these reinvestments.

If you invest in a fund shortly before it makes a capital gain distribution, some of your investment may be returned to you in the form of a taxable distribution. This is commonly known as “buying a dividend.” Distributions that are declared in December, but paid in January are taxable as if they were paid in December.

Taxation of Distributions

Distributions paid out of a fund’s “net capital gain” will be taxed to shareholders as long-term capital gain, regardless of how long a shareholder has owned shares. Distributions of net investment income, other than exempt-interest dividends, and net short-term capital gains will generally be taxed to shareholders as ordinary income.

Each of the Municipal Money Market, New Jersey Municipal Money Market, North Carolina Municipal Money Market, Ohio Municipal Money Market, Pennsylvania Municipal Money Market and Virginia Municipal Money Market Portfolios intends to pay most of its dividends as exempt-interest dividends, which means such dividends are exempt from regular Federal income tax (but, except for the Municipal Money Market Portfolio, may be subject to the Federal Alternative Minimum Tax). The state or municipality where you live may not charge you state and local taxes on dividends paid with respect to interest on obligations of such state or municipality. Otherwise, these dividends will generally be subject to state and local taxes.

Dividends paid with respect to interest on securities issued by the U.S. Government and its agencies may also be exempt from some types of state and local taxes.

Your annual tax statement from the Fund will present in detail the tax status of your distributions for each year.

If you do not provide a fund with your proper taxpayer identification number and certain required certifications, you may be subject to backup withholding on any distributions of income, capital gains or proceeds from the sale of your shares. When withholding is required, the amount will be 28% of any distributions or proceeds paid. Backup withholding is not an additional tax. Any amounts withheld may be credited against your U.S. federal income tax liability.

Non-U.S. investors may be subject to U.S. withholding and/or estate tax, and will be subject to special U.S. tax certification requirements. Because every investor has an individual tax situation, and also because the tax laws are subject to periodic changes, you should always consult your tax adviser about federal, state and local tax consequences of owning shares of the Fund.

Important Notice Regarding Delivery of Shareholder Documents

The funds deliver only one copy of shareholder documents, including prospectuses, shareholder reports and proxy statements, to shareholders with multiple accounts at the same address. This practice is known as “householding” and is intended to eliminate duplicate mailings and reduce expenses. Mailings of your shareholder documents may be householded indefinitely unless you instruct us otherwise. If you do not want the mailing of these documents to be combined with those for other members of your household, please contact the Fund at (800) 441-7762.

Electronic Access to Annual Reports, Semi-Annual Reports and Prospectuses

Electronic copies of most financial reports and prospectuses are available on the Fund’s website. Shareholders can sign up for e-mail notifications of quarterly statements, annual and semi-annual reports and prospectuses by enrolling in the the Fund’s electronic delivery program.

To enroll:

Shareholders Who Hold Accounts with Investment Advisers, Banks or Brokerages:

Please contact your financial adviser. Please note that not all investment advisers, banks or brokerages may offer this service.

Shareholders Who Hold Accounts Directly With BlackRock

1) Access the BlackRock website at

http://www.blackrock.com/edelivery

2) Log into your account

For more information:

This Prospectus contains important information you should know before you invest. Read it carefully and keep it for future reference. More information about the Fund is available at no charge upon request. This information includes:

Annual/Semi-Annual Reports

These reports contain additional information about each of the funds’ investments. The annual report lists portfolio holdings, and includes the funds’ financial statements.

Statement of Additional Information (SAI)

A Statement of Additional Information, dated January 31, 2006, has been filed with the Securities and Exchange Commission (SEC). The SAI, which includes additional information about the Fund, may be obtained free of charge, along with the Fund’s annual and semi-annual reports, by calling (800) 441-7762. The SAI, as supplemented from time to time, is incorporated by reference into this Prospectus.

BlackRock Investment Services

Representatives are available to discuss account balance information, mutual fund prospectuses, literature, programs and services available. Hours: 8:00 a.m. to 6:00 p.m. (Eastern time), Monday-Friday. Call: (800) 441-7762.

Purchases and Redemptions

Call your registered representative or (800) 441-7762.

World Wide Web

Access general fund information and specific fund performance, including SAI and annual/semi-annual reports, free of charge. Request mutual fund prospectuses and literature. Forward mutual fund inquiries. www.blackrock.com/funds

Written Correspondence

BlackRock Funds

c/o PFPC Inc.

PO Box 9819

Providence, RI 02940-8019

Overnight Mail

BlackRock Funds

c/o PFPC Inc.

101 Sabin Street

Pawtucket, RI 02860

Internal Wholesalers/Broker Dealer Support

Available to support investment professionals

8:30 a.m. to 6:00 p.m. (Eastern time), Monday-Friday.

Call: (800) 882-0052

Portfolio Characteristics and Holdings

A description of the Fund’s policies and procedures related to disclosure of portfolio characteristics and holdings is available in the SAI.

For information about portfolio holdings and characteristics, BlackRock fund shareholders and prospective investors may call (800) 882-0052.

Securities and Exchange Commission

You may also view and copy public information about the Fund, including the SAI, by visiting the EDGAR database on the SEC Web site (http://www.sec.gov) or the SEC’s Public Reference Room in Washington, D.C. Information about the operation of the public reference room can be obtained by calling the SEC directly at (202) 551-8090. Copies of this information can be obtained, for a duplicating fee, by electronic request at the following E-mail address: publicinfo@sec.gov, or by writing to the Public Reference Section of the SEC, Washington, D.C. 20549.

INVESTMENT COMPANY ACT FILE NO. 811-05742

PRO-MM-INST 06

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