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American High-Income Municipal Bond Fund (Second Prospectus Summary) | American High-Income Municipal Bond Fund
American High-Income Municipal Bond Fund®
Investment objective
The fund's investment objective is to provide you with a high level of current
income exempt from regular federal income tax.
Fees and expenses of the fund
This table describes the fees and expenses that you may pay if you buy and hold
shares of the fund.
Shareholder fees (fees paid directly from your investment)
Shareholder Fees
American High-Income Municipal Bond Fund
Class R-6
Maximum sales charge (load) imposed on purchases (as a percentage of offering price) none
Maximum deferred sales charge (load) (as a percentage of the amount redeemed) none
Maximum sales charge (load) imposed on reinvested dividends none
Redemption or exchange fees none
Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses
American High-Income Municipal Bond Fund
Class R-6
Management fees 0.34%
Distribution and/or service (12b-1) fees none
Other expenses [1] 0.04%
Total annual fund operating expenses 0.38%
[1] Based on estimated amounts for a full fiscal year.
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.

The example assumes that you invest $10,000 in the fund for the time periods
indicated and then redeem all of your shares at the end of those periods. The
example also assumes that your investment has a 5% return each year and that
the fund's operating expenses remain the same.
Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example (USD $)
Expense Example, with Redemption, 1 Year
Expense Example, with Redemption, 3 Years
Expense Example, with Redemption, 5 Years
Expense Example, with Redemption, 10 Years
American High-Income Municipal Bond Fund Class R-6
39 122 213 480
Portfolio turnover
The fund pays transaction costs, such as commissions, when it buys and sells
securities (or "turns over" its portfolio). A higher portfolio turnover rate
may indicate higher transaction costs and may result in higher taxes when
fund shares are held in a taxable account. These costs, which are not reflected
in annual fund operating expenses or in the example, affect the fund's investment
results. During the most recent fiscal year, the fund's portfolio turnover rate
was 20% of the average value of its portfolio.
Principal investment strategies
In seeking to achieve its objective, the fund may forego opportunities that
would result in capital gains and may accept prudent risks to capital value,
in each case to take advantage of opportunities for higher current income.

Under normal circumstances, the fund will invest at least 80% of its assets
in, or derive at least 80% of its income from, securities that are exempt
from regular federal income tax. The fund may invest, without limitation, in
securities that may subject you to federal alternative minimum tax. The fund
invests a significant portion of its portfolio in municipal bonds rated BBB+
or below or Baa1 or below by Nationally Recognized Statistical Rating
Organizations designated by the fund's investment adviser, or unrated but
determined by the fund's investment adviser to be of equivalent quality.
Securities rated BB+ or below and Ba1 or below are sometimes referred to as
"junk bonds." Some of the securities in which the fund invests may have credit
and liquidity support features, including guarantees and letters of credit.

In addition, the fund may invest significantly in municipal obligations of
issuers in the same state, or engaged in the same types of projects or
industries.

The investment adviser uses a system of multiple portfolio counselors in
managing the fund's assets. Under this approach, the portfolio of the fund is
divided into segments managed by individual counselors who decide how their
respective segments will be invested.

The fund relies on the professional judgment of its investment adviser to make
decisions about the fund's portfolio investments. The basic investment philosophy
of the investment adviser is to seek to invest in attractively priced securities
that, in its opinion, represent good, long-term investment opportunities. The
investment adviser believes that an important way to accomplish this is by
analyzing various factors, which may include the credit strength of the issuer,
prices of similar securities issued by comparable issuers, anticipated changes
in interest rates, general market conditions and other factors pertinent to the
particular security being evaluated. Securities may be sold when the investment
adviser believes that they no longer represent relatively attractive investment
opportunities.
Principal risks
This section describes the principal risks associated with the fund's principal
investment strategies. You may lose money by investing in the fund. The likelihood
of loss may be greater if you invest for a shorter period of time.

Market conditions -- The prices of, and the income generated by, the securities
held by the fund may decline due to market conditions and other factors,
including those directly involving the issuers of securities held by the fund.

Investing in bonds -- Rising interest rates will generally cause the prices of
bonds and other debt securities to fall. Longer maturity debt securities may be
subject to greater price fluctuations than shorter maturity debt securities.
In addition, falling interest rates may cause an issuer to redeem, call or
refinance a security before its stated maturity, which may result in the fund
having to reinvest the proceeds in lower yielding securities.

Bonds and other debt securities are subject to credit risk, which is the
possibility that the credit strength of an issuer will weaken and/or an issuer
of a debt security will fail to make timely payments of principal or interest
and the security will go into default.

Thinly traded securities -- There may be little trading in the secondary market
for particular bonds or other debt securities, which may make them more
difficult to value, acquire or sell.

Credit and liquidity support -- Changes in the credit quality of banks and
financial institutions providing credit and liquidity support features with
respect to securities held by the fund could cause the values of these
securities to decline.
  
Investing in lower rated bonds -- Lower rated bonds and other lower rated debt
securities generally have higher rates of interest and involve greater risk of
default or price declines due to changes in the issuer's creditworthiness than
those of higher quality debt securities. The market prices of these securities
may fluctuate more than the prices of higher quality debt securities and may
decline significantly in periods of general economic difficulty. These risks
may be increased with respect to investments in junk bonds.

Investing in similar municipal bonds -- Investing significantly in municipal
obligations of issuers in the same state or backed by revenues of similar types
of projects or industries may make the fund more susceptible to certain economic,
political or regulatory occurrences. As a result, the potential for fluctuations
in the fund's share price may increase.

Management -- The investment adviser to the fund actively manages the fund's
investments. Consequently, the fund is subject to the risk that the methods and
analyses employed by the investment adviser in this process may not produce the
desired results. This could cause the fund to lose value or its investment
results to lag relevant benchmarks or other funds with similar objectives.

Your investment in the fund is not a bank deposit and is not insured or guaranteed
by the Federal Deposit Insurance Corporation or any other governmental agency,
entity or person. You should consider how this fund fits into your overall
investment program.
Investment results
The following bar chart shows how the fund's investment results have varied from
year to year, and the following table shows how the fund's average annual total
returns for various periods compare with different broad measures of market
results. This information provides some indication of the risks of investing in
the fund. The Barclays High Yield Municipal Bond Index is a market-value-weighted
index composed of municipal bonds rated below BBB/Baa. The Lipper High Yield
Municipal Debt Funds Average includes the fund and other funds that disclose
investment objectives and/or strategies reasonably comparable to the fund's
objective and/or strategies. Past investment results (before and after taxes)
are not predictive of future investment results. Updated information on the
fund's investment results can be obtained by visiting americanfunds.com.
Investment results for Class R-6 shares are not presented because the class
had not commenced operations as of December 31, 2011. However, results for
Class A shares are presented because Class A is the class of shares with the
longest period of operation. Other share classes, including Class R-6 shares,
have different expenses and therefore different investment results.
The following bar chart shows how the fund's investment results have varied from
year to year, and the following table shows how the fund's average annual total
returns for various periods compare with different broad measures of market
results.
Calendar year total returns for Class A Shares (Results do not include a sales charge; if a sales charge were included, results would be lower.)
Bar Chart
Highest/Lowest quarterly results during this period were.

Highest  11.55% (quarter ended September 30, 2009)

Lowest  -13.96% (quarter ended December 31, 2008)

The fund's total return for the six months ended
June 30, 2012 was 7.99%.
After-tax returns are shown only for Class A shares; after-tax returns for other
share classes will vary. After-tax returns are calculated using the highest
individual federal income tax rates in effect during each year of the periods
shown and do not reflect the impact of state and local taxes. Your actual
after-tax returns depend on your individual tax situation and likely will differ
from the results shown above.
Average annual total returns For the periods ended December 31, 2011 (with maximum sales charge):
Average Annual Total Returns American High-Income Municipal Bond Fund
Label
1 Year
5 Years
10 Years
Since Inception
Inception Date
Class R-6
Share class A - Before taxes 5.75% 1.83% 3.82% 5.14% Sep. 26, 1994
Class R-6 After Taxes on Distributions
Share class A - After taxes on distributions 5.75% 1.83% 3.82%   Sep. 26, 1994
Class R-6 After Taxes on Distributions and Sales
Share class A - After taxes on distributions and sale of fund shares 5.47% 2.22% 3.94%   Sep. 26, 1994
Barclays Municipal Bond Index
Barclays Municipal Bond Index (reflects no deductions for sales charges, account fees, expenses or taxes) 10.70% 5.22% 5.38% 5.99% Sep. 26, 1994
Barclays High Yield Municipal Bond Index
Barclays High Yield Municipal Bond Index (reflects no deductions for sales charges, account fees, expenses or taxes) 9.25% 2.20% 5.51%   Sep. 26, 1994
Lipper High Yield Municipal Debt Funds Average
Lipper High Yield Municipal Debt Funds Average (reflects no deductions for sales charges, account fees or taxes) 9.94% 1.65% 4.16% 4.93% Sep. 26, 1994
Class A annualized 30-day yield at July 31, 2012: 3.39%         
(For current yield information, please call American FundsLine®
at 800/325-3590.)