To invest in tax-free bonds, open a brokerage account or a TreasuryDirect account, confirm the tax exemption is actually worth more to you than a taxable bond’s higher yield, and then buy either individual municipal bonds, a municipal bond fund or ETF, or federal savings bonds. Interest on bonds issued by state and local governments is generally excluded from your federal gross income, and sometimes from state and local income tax too.1Office of the Law Revision Counsel. 26 USC 103 – Interest on State and Local Bonds Which route makes sense depends on your tax bracket, how much you have to invest, and whether you want to pick bonds yourself or let a fund do it.
Decide Whether Tax-Free Bonds Actually Help You
A 3.5% tax-exempt yield is not the same as a 3.5% taxable yield. To compare them honestly, divide the municipal bond’s yield by one minus your federal tax rate. In the 24% bracket, a 3.5% muni is equivalent to a taxable bond yielding about 4.6%. In the 37% bracket, you’d need a taxable yield above 5.5% to match the same muni. The higher your bracket, the more the exemption is worth.
If you buy bonds issued inside your own state, you can also subtract your state rate from the denominator, which pushes the equivalent yield higher still. The reverse is also true: in a low bracket, or inside a retirement account where income is already tax-deferred, municipal bonds usually don’t pay off because you’re giving up yield to buy a tax break you don’t need. Run this calculation before anything else.
Pick the Type of Tax-Free Bond
Municipal bonds fall into two broad groups. General obligation bonds are backed by the taxing power of the issuing government; if revenue falls short, the issuer can raise taxes to keep paying bondholders. Revenue bonds are backed only by income from a specific project, like toll roads, water systems, or airport fees, and typically pay slightly more because of that narrower source of repayment.2Municipal Securities Rulemaking Board. Municipal Bond Basics
Some munis are “triple tax-exempt,” meaning federal, state, and local income taxes all skip the interest. This usually happens when you buy bonds issued by your own state or a local government in it. A New York resident holding New York municipal bonds, for example, would owe no federal, state, or city income tax on the interest.
Watch for private activity bonds. These fund projects with significant private involvement, like stadiums or industrial parks, and their otherwise tax-exempt interest can trigger the alternative minimum tax.2Municipal Securities Rulemaking Board. Municipal Bond Basics The bond’s official statement discloses whether it’s a private activity bond. If you’re exposed to the AMT, read that section before you buy.
Where Federal Savings Bonds Fit In
U.S. savings bonds are a different product. Series EE and Series I bonds are issued by the federal government, and their interest is subject to federal income tax under normal circumstances. The tax break is conditional: if you redeem the bonds to pay qualified higher education expenses, you can exclude some or all of the interest from federal taxable income.3Office of the Law Revision Counsel. 26 US Code 135 – Income From United States Savings Bonds Used to Pay Higher Education Tuition and Fees The exclusion phases out above $99,500 for single filers and $149,250 for joint filers in 2025, and disappears entirely above $114,500 and $179,250.4Internal Revenue Service. Form 8815 – Exclusion of Interest From Series EE and I US Savings Bonds Issued After 1989 Thresholds adjust annually for inflation. So if you’re saving for a child’s tuition, savings bonds can be a tax-free vehicle; otherwise, they’re taxable at the federal level.
Open the Right Account
Municipal bonds and muni funds are bought through a brokerage account. Savings bonds are bought directly from the Treasury at TreasuryDirect.gov. Either way, you’ll need to pass standard identity verification: Social Security number, government photo ID, date of birth, and current address.5National Credit Union Administration. Customer or Member Identification Program Brokerages also ask about your employer, income, and investment experience. Expect to link a bank account using the routing and account numbers.
The address on your account matters. State and local tax exemptions on muni interest depend on where you live relative to the issuer, and your broker uses that address to flag in-state bonds and report your interest correctly.
Bonds held at a brokerage are covered by the Securities Investor Protection Corporation up to $500,000 in securities, with a $250,000 limit on cash, if the firm fails.6Securities Investor Protection Corporation. What SIPC Protects SIPC protects against broker insolvency, not against the bonds themselves losing value.
Buy Individual Municipal Bonds
Most brokerage platforms have a fixed-income screener. You can filter bonds by state, maturity, credit rating, yield, and tax status. If you already know the exact bond you want, enter its CUSIP number, the nine-character code assigned to every security, to pull it up directly.
Most municipal bonds have a minimum denomination of $5,000, which is the smallest block you can buy or trade on the secondary market.7Municipal Securities Rulemaking Board. Minimum Denominations of Municipal Securities Some issues set higher minimums of $25,000 or $100,000 to target institutional buyers. Par value is quoted in multiples of $1,000, so a $5,000 minimum is five $1,000-par bonds.2Municipal Securities Rulemaking Board. Municipal Bond Basics
If you buy between semiannual coupon dates, you’ll owe the seller accrued interest for the days they held the bond since the last payment. It shows up as a separate line on your trade confirmation and comes back to you when the next full coupon arrives, so it isn’t an added cost, just a higher upfront outlay.8FINRA. Accrued Interest Calculator
Municipal bonds settle on a T+1 basis under MSRB Rules G-12 and G-15, so payment and transfer happen one business day after the trade.9Federal Register. Self-Regulatory Organizations – Municipal Securities Rulemaking Board – Order Granting Approval of a Proposed Rule Change Your brokerage holds the bonds electronically. Check your statements against the coupon schedule to confirm interest is being paid when and in the amount expected.
Buy Savings Bonds Through TreasuryDirect
At TreasuryDirect.gov, you log in, choose Series I or Series EE, enter a dollar amount (as little as $25 for electronic bonds), and fund the purchase from your linked bank account.10eCFR. 31 CFR 363.54 – What Is the Minimum Amount of a Book-Entry Savings Bond That I Must Hold in My Account Bonds appear in your account within a few business days. There’s no commission and no secondary market; you buy from and redeem with the Treasury.
Each Social Security number can buy up to $10,000 in electronic Series I bonds and $10,000 in electronic Series EE bonds per calendar year.11TreasuryDirect. How Much Can I Spend on Savings Bonds? The option to buy paper Series I bonds with your federal tax refund ended January 1, 2025.12TreasuryDirect. Using Your Income Tax Refund to Buy Paper Savings Bonds
You cannot cash a savings bond for the first 12 months. Redeem between year one and year five, and you forfeit the last three months of interest.13TreasuryDirect. I Bonds After five years, no penalty. Interest accrues monthly and compounds semiannually inside your account.
Buy a Municipal Bond Fund or ETF Instead
Picking individual bonds takes capital, credit research, and tolerance for a market where selling before maturity can be slow. A municipal bond mutual fund or ETF pools investor money across hundreds or thousands of bonds, so a single default doesn’t wreck the portfolio. ETFs trade on exchanges throughout the day, which makes them easier to move in and out of than the underlying bonds.
National muni funds hold issuers from many states; state-specific funds concentrate on a single state to preserve the triple-tax-exempt benefit for residents. If you live in a high-tax state, state-specific is often the better after-tax outcome. If you live in a no-income-tax state, or want broader diversification, a national fund fits better. Expense ratios on passively managed muni ETFs run roughly 0.05% to 0.10% annually.
Know the Risks Before You Buy
Municipal bonds are among the safer fixed-income holdings, but they are not risk-free.
Interest Rate Risk
Bond prices move opposite to interest rates. When rates rise, existing lower-coupon bonds lose market value. Hold to maturity and this doesn’t change the income you receive; sell early and you could get back less than you paid. Longer maturities are more sensitive to rate moves.
Credit Risk
Defaults do happen, especially with revenue bonds tied to a single project that underperforms. Check the credit rating before buying, and don’t treat “municipal” as a synonym for “guaranteed.”
Call Risk
Many munis are callable, meaning the issuer can redeem them early at a set price, often after ten years. Issuers call bonds when rates fall so they can refinance cheaper, which leaves you reinvesting at the new lower rates.14FINRA. Callable Bonds – Be Aware That Your Issuer May Come Calling Check the call date before you buy.
Liquidity Risk
The muni market is far less liquid than the stock market. Over a million individual bond issues are outstanding and many trade infrequently, so selling a small position early can mean accepting a weaker price. Funds and ETFs largely solve this.
Tax Reporting You Still Have to Do
Tax-exempt doesn’t mean invisible. Your broker or fund sends you a Form 1099-INT each year. Box 8 shows total tax-exempt interest, which you report on your return but don’t add to taxable income.15Internal Revenue Service. Form 1099-INT Box 9 reports interest from private activity bonds separately, which matters if the AMT applies to you.16Internal Revenue Service. Instructions for Forms 1099-INT and 1099-OID
The exemption applies only to interest. If you sell a muni for more than you paid, the gain is taxable. Hold more than a year and it’s a long-term capital gain; sell within a year and it’s ordinary income.
The De Minimis Rule on Discount Bonds
Buying a bond at a discount on the secondary market can change how the eventual gain is taxed. The threshold is 0.25% of face value times the full years remaining to maturity. For a $1,000 bond with eight years left, that’s $20 (0.25% × $1,000 × 8). Pay $981 or more and the gain at maturity is a capital gain. Pay $980 or less and the entire gain is taxed as ordinary income. Small detail, meaningful difference in after-tax return.