Federal, state, and municipal bonds have different tax treatment
Not all government bonds are tax-free. U.S. Treasury bonds — issued by the federal government — are free from state and local income tax, but you still owe federal income tax on the interest. Municipal bonds issued by states and cities are often free from federal income tax, and sometimes from state and local tax too, depending on where you live and where the bond was issued. Savings bonds like Series EE and Series I bonds have their own rules. The tax treatment depends on which type of bond you own and how you use it.
The tax advantage matters because it changes what the bond actually pays you after taxes. A municipal bond paying 3 percent may be worth more to you than a Treasury bond paying 4 percent if you're in a high federal tax bracket, because you keep more of the 3 percent. Understanding which bonds are taxed where helps you compare what different bonds are actually worth to you.
Key Takeaways
- Treasury bonds are taxed by the federal government but not by states or cities, while municipal bonds are often free from federal tax.
- Series EE and Series I savings bonds can be completely tax-free if used for may have access to education expenses, but otherwise you owe federal tax on the interest.
- The tax benefit of a bond depends on your tax bracket and where you live — a tax-free bond is worth more to someone in a high bracket than someone in a low one.
- Interest from Treasury bonds is reported on your federal tax return, while many municipal bonds are not reported at all if they're tax-exempt.
How Treasury bonds are taxed
Interest from U.S. Treasury bonds, notes, and bills is subject to federal income tax. You report it on your federal tax return in the year you receive it (or the year it accrues, depending on your accounting method). The interest is taxed as ordinary income at your regular tax rate, not at a special capital gains rate.
The federal tax advantage is that you do not owe state or local income tax on Treasury interest, no matter which state you live in. This is set by federal law — states cannot tax Treasury interest. If you live in a state with high income tax, this can save you a meaningful amount. For example, if you live in California and earn $1,000 in Treasury interest, you owe federal tax on it but not California state tax.
If you sell a Treasury bond before it matures and make a profit, that profit is also taxed as ordinary income at the federal level. If you sell at a loss, you can claim a capital loss on your federal return.
Municipal bonds and the federal tax exemption
Municipal bonds issued by states, cities, and other local governments are usually exempt from federal income tax. This means the interest you receive is not reported on your federal tax return and you do not owe federal tax on it. This is the main tax advantage that makes municipal bonds attractive to investors in high federal tax brackets.
However, the state and local tax treatment varies. If you buy a municipal bond issued by your own state or city, the interest is often exempt from both federal and state income tax — sometimes local tax too. If you buy a municipal bond issued by a different state, the interest is free from federal tax but you may owe state income tax on it, depending on your state's rules. Some states tax out-of-state municipal bond interest; others do not.
Not every municipal bond is tax-exempt. Some are issued as taxable municipal bonds, which means you owe federal income tax on the interest just as you would with a Treasury bond. These are less common and typically pay higher interest rates to compensate for the tax burden. You need to check the bond's official statement or ask your broker whether a specific municipal bond is tax-exempt or taxable.
Savings bonds and education-related tax breaks
Series EE bonds and Series I bonds are issued by the U.S. Treasury and sold at banks and through TreasuryDirect. The interest on these bonds is subject to federal income tax, but there is a special rule: if you use the bond proceeds to pay for may have access to education expenses — tuition, fees, and room and board at an accredited school — you can exclude the interest from federal taxation entirely.
To claim this exclusion, you must have purchased the bond in your own name (not as a gift) after you turned 24 years old, and you must use the proceeds in the same year you redeem the bond. The education expenses must be for you, your spouse, or your dependent. If you do not meet these conditions, you owe federal tax on the interest. Series EE and Series I bonds are never exempt from state or local income tax.
Series I bonds have an additional feature: they earn interest that adjusts every six months based on inflation. This makes them useful for protecting purchasing power, but the tax treatment is the same as Series EE bonds — federal tax applies unless you use them for education.
Comparing after-tax returns across bond types
The real value of a bond is what you keep after taxes. A municipal bond paying 3 percent that is completely tax-free may be worth more to you than a Treasury bond paying 4 percent if you are in a 35 percent federal tax bracket. After federal tax, the Treasury bond is worth 2.6 percent to you (4 percent minus 35 percent of 4 percent). The municipal bond is worth 3 percent.
Your tax bracket, your state's tax rate, and whether you live in the state that issued the bond all affect which bond is actually the better deal. Someone in a low federal tax bracket might be better off with a higher-paying Treasury bond, because the tax savings from a municipal bond are worth less to them. Someone in a high bracket living in a high-tax state might prefer an in-state municipal bond.
This is why financial advisors often recommend that people in high tax brackets consider municipal bonds, while people in lower brackets may find Treasury bonds or other taxable bonds more attractive. The math is different for each person.
What you report on your tax return
Interest from Treasury bonds goes on your federal tax return as taxable interest income. You receive a Form 1099-INT from the Treasury or your broker showing the amount of interest earned. You report this on Schedule B (if you have other interest income) or directly on Form 1040.
Interest from tax-exempt municipal bonds does not go on your federal tax return as taxable income. However, it still must be reported on your return on a line that does not add to your taxable income — the IRS wants to know about it for verification purposes. You will receive a Form 1099-INT showing the tax-exempt interest, and you report it on Schedule B even though it is not taxed.
If you live in a state that taxes out-of-state municipal bond interest, you will owe state income tax on that interest and must report it on your state return. Check your state's tax rules or ask your broker which bonds are exempt from your state's tax.
Frequently Asked Questions
Are all Treasury bonds exempt from state tax?
Yes. Federal law prohibits states from taxing the interest on any U.S. Treasury security — bonds, notes, or bills. This applies no matter which state you live in. However, you still owe federal income tax on the interest.
Can I buy a municipal bond that is tax-free in my state?
Yes, if you buy a bond issued by your own state or city, the interest is usually exempt from both federal and state income tax. Out-of-state municipal bonds are free from federal tax but may be subject to your state's income tax, depending on your state's rules. Ask your broker or check the bond's official statement to confirm the tax treatment.
What happens if I sell a bond before maturity?
If you sell a bond at a profit, you owe tax on the gain. If you sell at a loss, you can claim a capital loss. The tax treatment of the gain or loss depends on the bond type — Treasury gains are taxed as ordinary income at the federal level, while municipal bond gains may have different treatment depending on your state.
Do I have to report tax-exempt municipal bond interest on my tax return?
You must report it on your federal return, but on a line that does not count as taxable income. The IRS requires this for verification. You will receive a Form 1099-INT showing the amount, and you report it on Schedule B of your federal return.
Can I use a Treasury bond to pay for education and avoid taxes?
No. The education tax exclusion only applies to Series EE and Series I savings bonds, not to regular Treasury bonds. You must have purchased the bond in your own name after age 24, and you must use the proceeds for may have access to education expenses in the year you redeem the bond.