Muni Bonds Unmasked: Separating Fact from Fiction
June 17, 2026
Jennifer Lippin
Vice President and Principal Portfolio Manager
Washington Trust Wealth Management
If you’re a high-income investor looking to improve after-tax income while managing portfolio risk, municipal bonds may already be on your radar.
Despite their reputation, “munis” are not tax-free 100 percent of the time, although they may offer meaningful tax advantages, lower volatility (as compared to equities), and portfolio diversification. Before deciding whether municipal bonds belong in your portfolio, it helps to understand how they work—and why not all municipal bonds are created equal.
Types of Munis and Their Potential Tax Advantages
The two primary types of municipal bonds are General Obligation (GO) bonds and Revenue bonds. GO bonds are often viewed as the more conservative option because they are backed by the full faith, credit, and taxing power of the issuing municipality. Repayment is supported by tax revenues, and municipalities have an obligation to raise taxes if tax revenues fall short.
Revenue bonds, by contrast, are tied to a specific revenue stream connected to a defined project, such as toll roads, airports, utilities, hospitals, or public transit systems. Rather than broad taxing authority, repayment depends on project-generated income, including tolls, utility fees, or hospital charges.
Municipal bond interest income is generally exempt from federal income tax, which is often the primary tax advantage. Depending on the type of bond and where you live, you may also benefit from state and local tax exemptions, particularly when investing in bonds issued by your home state.
However, tax treatment varies. Residents of Illinois, Iowa, Oklahoma, and Wisconsin generally pay state income tax on municipal bond income, regardless of where the bond was issued. One notable exception involves bonds issued by the U.S. territories of Puerto Rico, Guam, and the U.S. Virgin Islands, which are exempt from state taxes in all fifty states.
A separate municipal bond sector, Private Activity Municipal Bonds, fund private-use rather than public-good projects. These bonds are generally exempt from federal taxes but may be subject to the Alternative Minimum Tax (AMT). And, while municipal bond interest may receive favorable tax treatment, capital gains remain taxable.
Beyond Taxes: Additional Potential Benefits of Municipal Bonds
In addition to tax advantages, municipal bonds may offer:
- Support for public services. Investment supports projects that directly benefit communities. Examples include transportation (roads, bridges, tunnels, airports, public transit), water and sewer operations, housing, utilities (electricity, gas and utility infrastructure), health (hospitals and healthcare facilities), industrial, and education (public schools).
- Higher after-tax yields for high-income taxpayers in higher tax brackets that may, depending on individual circumstances, help increase the after-tax returns earned.i
- Potential liquidity. Municipal bonds are generally traded in an active secondary market, which may provide opportunities to sell holdings prior to maturity, although market liquidity can vary significantly among issuers and market environments.ii
- Lower investment risk, lower default risk and lower volatility as compared to the broader equity market. Because they focus on state and local issuers, they are often viewed as a conservative or safe-haven asset class. In many cases, state and local governments have demonstrated stronger credit quality than some investment-grade corporate issuers, with relatively low default rates over time, with a few notable exceptions.iii However, municipal bonds are still subject to interest rate, credit, and market risks.iv
- Diversification, offering a broader return stream from tax-advantaged bonds that may, but not always, improve both risk-adjusted returns and income.
So … Are Municipal Bonds Right for You?
While municipal bonds are particularly attractive to higher-income investors in higher tax brackets, investors across tax brackets may want to consider them as part of a well-diversified portfolio to ensure long-term risk management. Working closely with an investment advisory team that understands your risk tolerances, goals, and time horizons may help you determine whether municipal bonds deserve a place in your portfolio as you navigate today’s volatile markets.
i IRS.gov. Publication 550, Investment Income and Expenses
iii MacKay Municipal Managers. Moody’s. U.S. Municipal Bond Defaults and Recoveries, 1970-2023
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