To buy municipal bonds, open a brokerage account that supports fixed-income trading, fund it, and either subscribe to a new issue through the underwriter or purchase an existing bond on the secondary market through your broker. Individual municipal bonds typically sell in $5,000 par-value increments, and the interest they pay is generally exempt from federal income tax under Section 103 of the Internal Revenue Code, and often from state and local tax when you buy bonds issued in your home state.1Office of the Law Revision Counsel. 26 USC 103 – Interest on State and Local Bonds The steps below walk through how the purchase actually works.
Open a Brokerage Account That Trades Bonds
You need an account at a firm that handles fixed-income trades. Full-service brokerages assign you a bond specialist who can help you shop for specific maturities, credit ratings, or geographic regions. Discount brokerages charge less and expect you to run the searches yourself through an online bond inventory. Both work. The choice matters because dealer markups and commissions differ between platforms, and those costs eat directly into your yield.
Fund the account with enough cash for the purchase plus transaction costs. Most municipal bonds carry a minimum denomination of $5,000 par value, and you buy in multiples of that amount.2FINRA. Municipal Securities Building a reasonably diversified portfolio of individual bonds often takes $50,000 to $100,000 or more. If that’s beyond what you want to commit, a municipal bond fund is worth considering instead (more on that below).
Choose Where to Buy: Primary or Secondary Market
Municipal bonds trade in two arenas, and the difference affects both price and availability.
Primary Market
The primary market is where a state, city, or other government entity first sells a new bond issue to raise money. Investment banks form underwriting groups that buy the whole issue and then offer the bonds to the public. To get in, watch your brokerage firm’s new-issue calendar or check with its fixed-income desk. You can also monitor upcoming offerings through the Electronic Municipal Market Access system (EMMA), a free platform run by the Municipal Securities Rulemaking Board (MSRB) that serves as the central repository for municipal bond data and documents.3Municipal Securities Rulemaking Board. Electronic Municipal Market Access (EMMA) Website
Primary-market pricing is uniform. Every buyer in the initial offering pays the same price, so there’s no dealer markup to negotiate.
Secondary Market
The secondary market is where investors trade bonds that have already been issued. Municipal bonds don’t trade on a centralized exchange like stocks do. Broker-dealers keep their own inventories and facilitate trades, which means price transparency is lower and transaction costs vary more than you might expect.
To shop the secondary market, browse your brokerage firm’s online bond inventory or ask a fixed-income specialist to run a search. EMMA displays recent trade prices for the specific CUSIP you’re considering, and checking those prices before you place an order gives you a benchmark for what dealers are actually paying and charging.
Know the Two Main Types Before You Shop
Municipal debt comes in two main flavors, and they carry very different risk profiles.
General obligation (GO) bonds are backed by the issuer’s full taxing power. A city that issues GO bonds can raise property taxes, sales taxes, or other levies to make the payments. That broad revenue base makes GO bonds relatively safe, and they tend to carry higher credit ratings.
Revenue bonds are backed only by income from a specific project or facility, like toll roads, hospitals, or water utilities. If the project underperforms, bondholders absorb the shortfall. Revenue bonds carry more credit risk and usually pay slightly higher yields to compensate. Revenue bonds also account for the vast majority of the municipal defaults that do occur, so the security pledge deserves a hard look before you commit.
Read the Official Statement and Check the CUSIP
Federal rules require the underwriter to obtain an Official Statement from the issuer and make it available to buyers.4eCFR. 17 CFR 240.15c2-12 – Municipal Securities Disclosure Dealers must then deliver it to customers who purchase the bonds.5Municipal Securities Rulemaking Board. Rule G-32 Disclosures in Connection With Primary Offerings The Official Statement is the municipal equivalent of a corporate prospectus. It lays out the bond’s terms, the issuer’s financial condition, the source of repayment, and the risks.
Focus on four things:
- Security pledge: whether the bond is a general obligation or revenue bond, and what specific revenues or taxes back it.
- Call provisions: whether the issuer can redeem the bond early, and on what terms.
- Credit rating: the current rating from agencies like Moody’s or S&P Global.
- Use of proceeds: what the borrowed money will fund, which affects both credit risk and tax status.
Every municipal security is assigned a unique nine-character CUSIP number. You’ll use it to look the bond up on EMMA and to place your trade order.6Municipal Securities Rulemaking Board. About CUSIP Numbers
Place the Trade
Once you’ve picked a bond, submit the order through your brokerage platform. You’ll specify the CUSIP, the quantity in multiples of $5,000 par value, and the order type. A market order buys at the best available current price. A limit order caps the price you’re willing to pay, which is worth considering given the municipal market’s lower liquidity: prices can shift between the quote you see and the moment your order executes.
Your dealer has a legal obligation to seek the most favorable price for you. MSRB Rule G-18 requires reasonable diligence to find the best market for the security, considering liquidity, trade size, and available quotes.7Municipal Securities Rulemaking Board. Rule G-18 Best Execution Reasonable diligence isn’t a guarantee of the absolute best price; it means the dealer can’t ignore obviously better markets or route your trade carelessly.
After execution, the trade settles on a “regular way” basis: the first business day after the trade date (T+1). Cash changes hands and ownership transfers on that settlement date.8Municipal Securities Rulemaking Board. Rule G-15 Confirmation, Clearance, Settlement and Other Uniform Practice Requirements With Respect to Transactions With Customers
Understand What You’ll Actually Pay
Your brokerage firm must send a written trade confirmation at or before the completion of the transaction, showing the price, yield, CUSIP, trade date, and time of execution.8Municipal Securities Rulemaking Board. Rule G-15 Confirmation, Clearance, Settlement and Other Uniform Practice Requirements With Respect to Transactions With Customers Keep it. That confirmation is your legal record of the purchase, and you’ll need it for tax reporting.
Two costs surprise first-time buyers.
The first is accrued interest. Municipal bonds pay interest semiannually.9Municipal Securities Rulemaking Board. Interest Payments When you buy a bond between coupon dates, you owe the seller the interest that has built up since the last payment. Accrued interest is calculated using a 360-day year convention and is added to your purchase price at settlement.10FINRA. Accrued Interest Calculator You get that money back at the next coupon payment, but your upfront outlay is higher than the quoted price.
The second is dealer compensation. When a dealer sells you a bond out of its own inventory (a principal trade), the price includes a markup over what the dealer paid. Since May 2018, dealers must disclose that markup on your confirmation for same-day principal trades with retail customers.11Municipal Securities Rulemaking Board. Mark-up Disclosure and Trading in the Municipal Bond Market If the dealer acts as your agent instead, you’ll see a separate commission. Total transaction cost for a typical retail trade runs roughly 0.5% to 0.75% of the bond’s value, though it can exceed 1% on smaller or less liquid issues.
Tax Outcomes Worth Knowing Before You Buy
The core benefit is straightforward. Interest on most municipal bonds is excluded from federal gross income.1Office of the Law Revision Counsel. 26 USC 103 – Interest on State and Local Bonds In most states, interest on bonds issued in your own state is also exempt from state and local income tax. That “triple tax-free” status is why high-income investors in places like California and New York concentrate on in-state bonds. Bonds issued in other states are generally taxable at the state level.
A few situations complicate the tax picture.
Private Activity Bonds and the AMT
Interest on certain private activity bonds, which fund projects with significant private-sector use like airports or industrial facilities, counts as income for purposes of the Alternative Minimum Tax. For 2026, the AMT exemption is $90,100 for single filers and $140,200 for married couples filing jointly.12Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 If your income puts you in AMT range, private activity bond interest could trigger extra tax. Check whether the bond is flagged as AMT-subject before buying. Your broker’s platform or EMMA should indicate this.
Market Discount
If you buy a bond on the secondary market at a discount from face value, the IRS may treat part of the eventual profit as ordinary income rather than capital gain. The rule applies when the discount exceeds one-quarter of 1% of the face value multiplied by the number of full years to maturity. Below that threshold, the entire gain qualifies as capital gain. Above it, the accrued market discount portion is taxed as ordinary income when you sell or when the bond matures.13Internal Revenue Service. Publication 550 (2025) – Investment Income and Expenses
Social Security Benefits
Tax-exempt municipal bond interest doesn’t count toward federal adjusted gross income, but it does count toward the “combined income” formula that determines whether your Social Security benefits are taxable. If your combined income (AGI plus tax-exempt interest plus half your Social Security benefits) exceeds $25,000 for a single filer or $32,000 for a married couple filing jointly, up to 85% of your Social Security benefits can be taxed.14Social Security Administration. Must I Pay Taxes on Social Security Benefits? A large muni portfolio can push you over those thresholds even though the interest itself stays federally tax-free.
Watch the Call Provisions
Most municipal bonds include call provisions that let the issuer repay early. The most common is an optional call, which typically becomes available 10 years after issuance. On or after that date, the issuer can redeem some or all of the outstanding bonds at a specified price plus accrued interest.15Municipal Securities Rulemaking Board. Refundings and Redemption Provisions
Issuers call bonds when interest rates fall so they can refinance cheaper. That’s good for the issuer and bad for you: your bond gets redeemed just as yields drop, and you have to reinvest at lower rates. Always check the yield-to-call alongside the yield-to-maturity. If you pay a premium for a bond and it gets called early, your actual return can come in well below what the quoted yield-to-maturity suggested. The Official Statement and your broker’s platform list the call dates and prices.
Municipal Bond Funds as an Alternative
Buying individual bonds gives you control over credit quality, maturity, and state-specific tax benefits, but it takes capital and research. Municipal bond mutual funds and ETFs offer a different trade-off.
A single fund can hold hundreds of bonds, giving you diversification that’s impractical to replicate on your own without a substantial portfolio. Bond ETFs trade on exchanges throughout the day, providing liquidity that individual municipal bonds lack. The cost is an ongoing expense ratio. Bond ETFs average around 0.29% annually, and municipal bond mutual funds tend to run higher.
The drawback of funds is that you lose the ability to hold a bond to maturity and guarantee return of principal. A fund’s share price fluctuates with interest rates and market conditions, so you could sell at a loss even if the underlying bonds are all performing. You also lose some state-tax control, because a national municipal bond fund holds bonds from many states, and only the portion from your home state would qualify for your state’s income tax exemption.
For investors with less than $50,000 to allocate, funds are often the more practical choice. For larger portfolios, individual bonds offer more predictable income and tax outcomes.
After You Buy
Once the bonds show up in your account, check in on them periodically. Watch for credit rating changes from Moody’s or S&P Global. A downgrade can reduce your bond’s market value and signals rising default risk. EMMA publishes continuing disclosure filings from issuers, including annual financial reports and notices of material events like missed payments or rating changes.16Municipal Securities Rulemaking Board. How Can EMMA Help You Monitor or Manage Bonds
Keep an eye on call notices too. If your bond is called, you’ll receive the redemption price and need to decide how to reinvest. Missing a call notice doesn’t cost you money (the issuer deposits the redemption amount regardless), but it can leave cash sitting idle in your account longer than necessary.