Jun. 25, 2026
The Fund's investment objective is to provide investors with a high level of current income exempt from federal income tax, consistent with preservation of capital.
This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund.
The table and Examples below do not reflect any transaction fees that may be charged by financial intermediaries or commissions that a shareholder may be required to pay directly to its financial intermediary when buying or selling Class Y or Class R6 shares. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in the Invesco Funds. More information about these and other discounts is available from your financial professional and in the section “Shareholder Account Information – Initial Sales Charges (Class A Shares Only)” on page A-3 of the prospectus and the section “Purchase, Redemption and Pricing of Shares-Purchase and Redemption of Shares” on page L-1 of the statement of additional information (SAI).
| Shareholder Fees (fees paid directly from your investment) | |||||
| Class: | A | C | Y | Investor | R6 |
| Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) | 4.25 % | None | None | None | None |
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| Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption proceeds, whichever is less) | None1 | 1.00 % | None | None | None |
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| Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) | |||||
| Class: | A | C | Y | Investor | R6 |
| Management Fees | 0.46 % | 0.46 % | 0.46 % | 0.46 % | 0.46 % |
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| Distribution and/or Service (12b-1) Fees | 0.25 | 1.00 | None | 0.14 | None |
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| Other Expenses | 0.10 | 0.10 | 0.10 | 0.10 | 0.05 |
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| Interest Expense | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 |
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| Total Other Expenses | 0.40 | 0.40 | 0.40 | 0.40 | 0.35 |
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| Total Annual Fund Operating Expenses | 1.11 | 1.86 | 0.86 | 1.00 | 0.81 |
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| 1 | A contingent deferred sales charge may apply in some cases. See “Shareholder Account Information-Contingent Deferred Sales Charges (CDSCs).” |
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. This Example does not include commissions and/or other forms of compensation that investors may pay on transactions in Class Y and Class R6 shares. 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:
| | 1 Year | 3 Years | 5 Years | 10 Years |
| Class A | $533 | $763 | $1,011 | $1,719 |
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| Class C | $289 | $585 | $1,006 | $1,984 |
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| Class Y | $88 | $274 | $477 | $1,061 |
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| Investor Class | $102 | $318 | $552 | $1,225 |
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| Class R6 | $83 | $259 | $450 | $1,002 |
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You would pay the following expenses if you did not redeem your shares:
|
|
1 Year
|
3 Years
|
5 Years
|
10 Years
|
|
Class A
|
$533 |
$763 |
$1,011 |
$1,719 |
|
|
||||
|
Class C
|
$189 |
$585 |
$1,006 |
$1,984 |
|
|
||||
|
Class Y
|
$88 |
$274 |
$477 |
$1,061 |
|
|
||||
|
Investor Class
|
$102 |
$318 |
$552 |
$1,225 |
|
|
||||
|
Class R6
|
$83 |
$259 |
$450 |
$1,002 |
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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 performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 30% of the average value of its portfolio.
Under normal market conditions, the Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in municipal securities. The 80% investment policy stated in the foregoing sentence is a fundamental policy of the Fund and may not be changed without shareholder approval of a majority of the Fund’s outstanding voting securities, as defined in the Investment Company Act of 1940, as amended (1940 Act). In complying with this 80% investment policy, the Fund may invest in derivatives and other instruments that have economic characteristics similar to the Fund’s investments that are counted toward the 80% investment policy.
Under normal market conditions, Invesco Advisers, Inc. (Invesco or the Adviser) seeks to achieve the Fund’s investment objective by investing at least 80% of the Fund’s net assets in investment-grade municipal securities. Investment-grade securities are: (i) securities rated BBB- or higher by S&P Global Ratings (S&P) or Baa3 or higher by Moody’s Ratings (Moody’s) or an equivalent rating by another nationally recognized statistical rating organization (NRSRO), (ii) securities with comparable short-term NRSRO ratings, or (iii) unrated securities determined by the Adviser to be of comparable quality. If two or more NRSROs have assigned different ratings to a security, the Adviser uses the highest rating assigned.
For purposes of the Fund's 80% investment policy, municipal securities include debt obligations of states, territories or possessions of the United States and the District of Columbia and their political subdivisions, agencies and instrumentalities, the interest on which is exempt from federal income tax at the time of issuance, in the opinion of bond counsel or other counsel to the issuers of such securities.
The principal types of municipal debt securities purchased by the Fund are revenue obligations and general obligations. To meet its investment objective, the Fund invests in different types of general obligation and revenue obligation securities, including fixed and variable rate securities, municipal notes, variable rate demand notes, municipal leases, custodial receipts, and participation certificates. The Fund may invest in these and other types of municipal securities. Under normal market conditions, the Fund invests primarily in municipal securities classified as revenue bonds.
Under normal market conditions, the Fund may invest up to 20% of its net assets in municipal securities below-investment-grade. This restriction is applied at the time of purchase and the Fund may continue to hold a security whose credit rating has been downgraded or, in the case of an unrated security, after the Fund’s adviser, Invesco Advisers, Inc. (Invesco or the Adviser) has changed its assessment of the security’s credit quality. As a result, credit rating downgrades or other market fluctuations may cause the Fund’s holdings of below-investment-grade securities to exceed, at times
significantly, this restriction for an extended period of time. These types of securities are commonly referred to as junk bonds. With respect to such investments, the Fund has not established any limit on the percentage of its portfolio that may be invested in securities in any one rating category.
The Fund may invest all or a substantial portion of its assets in municipal securities that are subject to the federal alternative minimum tax. From time to time, the Fund temporarily may invest up to 10% of its net assets in tax-exempt money market funds and such instruments will be treated as investments in municipal securities.
The Fund may invest more than 25% of its net assets in a segment of the municipal securities market with similar characteristics if the Adviser determines that the yields available from obligations in a particular segment justify the additional risks of a larger investment in such segment. The Fund may not, however, invest more than 25% of its net assets in industrial development revenue bonds issued for companies in the same industry.
The Fund may invest in illiquid or thinly traded investments. The Fund may also invest in securities that are subject to resale restrictions and/or exempt from registration under the Securities Act of 1933, as amended (Securities Act), such as those contained in Rule 144A promulgated under the Securities Act. The Fund’s investments may include securities that do not produce immediate cash income, such as zero coupon securities and payment-in-kind securities.
The Fund may purchase and sell securities on a when-issued and delayed delivery basis, which means that a Fund buys or sells a security with payment and delivery taking place in the future.
The Fund can invest in inverse floating rate interests (Inverse Floaters) issued in connection with tender option bond (TOB) financing transactions to generate leverage for the Fund. The Fund’s investments in Inverse Floaters are included for purposes of the 80% policy described above.
The Fund can invest in derivative instruments, including futures contracts and swap contracts.
The Fund can use futures contracts, including interest rate futures, to reduce exposure to interest rate changes and to manage duration.
The Fund can use swap contracts, including interest rate swaps, to seek to hedge its exposure to interest rates.
Derivatives and other instruments that provide investment exposure to the investments subject to the 80% investment policies and derivatives that provide investment exposure to one or more market risk factors associated with such investments may be included in the Fund's 80% investment policies.
The Fund can borrow money for investment-related purposes including to purchase additional securities, which is another form of leverage. The Fund may also borrow to meet redemption obligations or for temporary and emergency purposes. Although the amount of borrowing will vary from time to time, the amount of leveraging from borrowings will not exceed one-third of the Fund’s total assets.
The Fund can invest up to 25% of its total assets in tobacco settlement revenue bonds, which make payments only from a state’s interest in the Master Settlement Agreement (MSA), and up to 25% of its total assets in tobacco bonds subject to a state’s appropriation pledge, which make payments from both MSA revenue and a state’s appropriation pledge.
The Adviser actively manages the Fund’s portfolio and adjusts the average maturity of portfolio investments based upon its expectations regarding the direction of interest rates and other economic factors. The Adviser seeks to identify those securities that it believes entail reasonable credit risk considered in relation to the Fund’s investment policies. In selecting securities for investment, the Adviser uses its extensive research capabilities to assess potential investments and considers a number of factors, including general market and economic conditions and interest rate, credit and prepayment risks. Each security considered for investment is subjected to an in-depth credit analysis to evaluate the level of risk it presents.
Decisions to purchase or sell securities are determined by the relative value considerations of the portfolio managers that factor in economic and
credit-related fundamentals, market supply and demand, market dislocations and situation-specific opportunities. The purchase or sale of securities may be related to a decision to alter the Fund’s macro risk exposure (such as duration, yield curve positioning and sector exposure), a need to limit or reduce the Fund’s exposure to a particular security or issuer, degradation of an issuer’s credit quality, or general liquidity needs of the Fund. The potential for realization of capital gains or losses resulting from possible changes in interest rates will not be a major consideration and frequency of portfolio turnover generally will not be a limiting factor if the Adviser considers it advantageous to purchase or sell securities.
The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The performance table compares the Fund’s performance to that of a broad measure of market performance and one or more additional indices with characteristics relevant to the Fund. The Fund's past performance (before and after taxes) is not necessarily an indication of its future performance.
Fund performance reflects any applicable fee waivers and expense reimbursements. Performance returns would be lower without applicable fee waivers and expense reimbursements.
All Fund performance shown assumes the reinvestment of dividends and capital gains and the effect of the Fund’s expenses.
Updated performance information is available on the Fund's website at www.invesco.com/us.
The bar chart does not reflect sales loads. If it did, the annual total returns shown would be lower.
| Class A | Period Ended | Returns |
| Year-to-date | March 31, 2026 | 0.17% |
| Best Quarter | December 31, 2023 | 8.34% |
| Worst Quarter | March 31, 2022 | -6.82% |
| | Inception Date | 1 Year | 5 Years | 10 Years |
| Class A | | | | |
| Return Before Taxes | 8/1/1990 | -2.60 % | -0.56 % | 1.63 % |
| Return After Taxes on Distributions | | -2.60 | -0.56 | 1.63 |
| Return After Taxes on Distributions and Sale of Fund Shares | | -0.02 | 0.36 | 2.05 |
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| Class C | 8/13/1993 | 0.06 | -0.43 | 1.47 |
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| Class Y | 8/12/2005 | 1.98 | 0.56 | 2.33 |
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| Investor Class | 7/15/2013 | 1.81 | 0.39 | 2.17 |
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| Class R6 | 4/4/2017 | 2.03 | 0.61 | 2.34 1 |
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| S&P Municipal Bond 5+ Year Investment Grade Index (reflects no deduction for fees, expenses or taxes) | | 4.43 | 0.67 | 2.50 |
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| S&P Municipal Bond Index (reflects no deduction for fees, expenses or taxes) | | 4.26 | 1.06 | 2.44 |
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1
Performance shown prior to the inception date is that of the Fund's Class A shares at net asset value and includes the 12b-1 fees applicable to that class. Although invested in the same portfolio of securities, Class R6 shares' returns of the Fund will be different from Class A shares' returns of the Fund as they have different expenses.
After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements, such as 401(k) plans, 529 college savings plans or individual retirement accounts. After-tax returns are shown for Class A shares only and after-tax returns for other classes will vary.