Benefits of Investing in Municipal Bonds for Income

Earning Tax-Free Interest Income for Retirement

An older person sitting at a desk, with a headline that reads: Municipal Bonds: A Solid Retirement Strategy, and text that reads: Municipal bond interest is exempt from income tax. They fluctuate less than stocks. This type of bond finances local projects, like the building of schools, highways, and bridges. Fixed-income investments may feel “safer” than other stocks.

The Balance / Lara Antal

When you have reached retirement, one of the most popular ways to generate passive income to augment your other sources of cash, such as Social Security or a pension check, is to invest your savings in tax-free municipal bonds. There can be several major advantages to this portfolio strategy.

Municipal Bond Income Is Exempt From Federal and State Income Taxes

Imagine that you are 65 years old. You have no debt, own your home outright, and have built up $500,000 in savings over a long working career. You have a choice between investing in general corporate bonds or tax-free municipal bonds. The corporate bonds yield 7%, and the tax-free municipal bonds yield 5%.

That means the corporate bonds would generate $35,000 in interest income each year for you, upon which to live, pay your bills, keep food in the pantry and medicine in the cupboard. You would have to pay ordinary income taxes on this money. The tax-free municipal bonds, on the other hand, would generate $25,000 per year in interest income. You wouldn't owe a single penny in federal or state taxes on these bonds if you were buying securities issued in your home state.

Which of the two is the better investment option for your portfolio? To discover the answer to that question, you must calculate something known as the taxable-equivalent yield. Generally speaking, the lower your tax bracket, the more favorable corporate bonds will be as an investment, whereas the higher your tax bracket, the more favorable municipal bonds appear. 

One trap you should avoid is the habit that new investors seem to pick up that causes them to put tax-free municipal bonds in retirement plans that are shielded from taxes due to their inherent structure. 

Even if you are in the highest tax bracket levied in the United States, the income within your 401(k) plan or other retirement accounts is already shielded from the IRS, making corporate bond yields a better choice from a taxation perspective in most situations. 

A handy rule to keep in mind is that opposites attract: Taxable bonds go into tax-free accounts, and tax-free bonds go in taxable accounts.

Municipal Bonds Can Fluctuate Less Than Stocks

Depending upon the duration of the municipal bonds you hold in your investment portfolio, your assets may fluctuate more or less than stocks. Typically, a bond with a shorter duration (one that matures sooner) will fluctuate far less than a bond of a longer duration (one that matures many years in the future). 

All things come with a price—hence the economic maxim "There is no such thing as a free lunch." Shorter-duration bonds almost always pay lower yields than bonds that have a longer duration. That is the trade-off you must make.


Rare situations occur every few decades when this is not true. This phenomenon is known as an "inverted yield curve."

Bonds May Appeal Emotionally

When you buy a municipal bond in the primary market, your money is lent to a local or state government for projects that make life better for the average person. If you buy bonds issued by a school district, your money will probably be used to construct a new school or gymnasium. If you buy a municipal bond issued by your hometown, the money may be used to construct roads, bridges, hospitals, sewage plants, and other public works. 

In all of these cases, the bond issuer promises to pay you interest on your money. At some point in the future, on the maturity date, you are promised the return of the par value of the bond itself. In most cases, certainly in the case of a traditional tax-free municipal bond, this is equal to the amount of money you originally lent the issuer. 

For many investors, knowing this simple fact—that you are going to get your money back at a specific point in the future as long as the bond issuer doesn't default—makes holding tax-free municipal bonds easier psychologically and emotionally.

There are some retired investors sitting on seven-figure portfolios stuffed with municipal bonds, who don't mind the fluctuations in the price but can't stomach the idea of holding any stocks, no matter how high-quality, how profitable, or how well-diversified, even knowing that in the long term, stocks absolutely trounce bonds in the return department.

Put simply, as irrational as it might be, many new investors think of bonds as somehow inherently safer than stocks, ignoring things such as ​inflation rate risk. Nevertheless, you don't have to invest in stocks to build wealth and perhaps focusing your savings on fixed-income investments such as tax-free municipal bonds will allow you to sleep better at night. 

Frequently Asked Questions (FAQs)

How do you buy municipal bonds?

There are a few ways to buy municipal bonds, but all of the easiest methods require a brokerage account. Some brokerages offer access to newly issued municipal bonds that are bought directly from the issuing entity. You may be able to buy individual bonds from other traders on the secondary market. There are also municipal bond mutual funds and ETFs that are automatically diversified across many different municipal bonds. Some of these bond funds focus on specific states so that investors can match their investments with where they live.

What are the current interest rates for municipal bonds?

One way to gauge the overall bond market is to use an index like the S&P Municipal Bond Index. The average yield to maturity on these kinds of indexes gives you a sense of the market average. From there, you know whether to expect more or less yield, depending on factors like credit risk and whether the bonds are short-term or long-term.

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The Balance uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
  1. FINRA. “Municipal Bonds.”

  2. IRS. “Publication 550, Investment Income and Expenses,” Pages 11, 16, 50. Accessed May 19, 2020.

  3. Municipal Securities Rulemaking Board. “About Taxable Municipal Bonds,” Pages 1, 3.

  4. “Municipal Bonds.”

  5. Municipal Securities Rulemaking Board. “Taxable Equivalent Yield.”

  6. Municipal Securities Rulemaking Board. “Investor Guide,” Page 6.

  7. FINRA. “Municipal Bonds—Important Considerations for Individual Investor.”

  8. Municipal Securities Rulemaking Board. “Investor Guide,” Pages 3-4.

  9. American Association of Individual Investors. “The Psychology Behind Common Investor Mistakes.”

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