Tax on Money Market Accounts: Interest, Reporting, and Strategies

How the IRS Taxes Money Market Account Interest

Interest earned on a money market account is treated as ordinary income by the Internal Revenue Service. That means it is taxed at your regular federal income tax rate, not the lower capital gains rate. The bank or brokerage issuing the account typically sends a Form 1099-INT if you earned $10 or more in interest during the year. You report that interest on Schedule B of your federal tax return and include it with your total taxable income.

Even if you do not receive a 1099-INT, you are still responsible for reporting all interest income. The IRS considers money market accounts to be deposit accounts, so the tax treatment is straightforward: what you earn is what you owe tax on.

Federal vs. State Tax Treatment of MMA Interest

At the federal level, money market interest is fully taxable. State treatment varies. Most states tax interest income the same way the federal government does, but a handful of states have no personal income tax or exempt interest income from out-of-state institutions. Residents of those states may owe nothing in state tax on their MMA earnings, though the rules differ depending on where the account is issued and where you file.

States With No Income Tax

• Alaska
• Florida
• Nevada
• South Dakota
• Tennessee
• Texas
• Washington
• Wyoming

Residents of states with income tax but no interest exemption, such as New York or California, will owe state tax on money market interest unless the account is held with a bank headquartered outside the state and the state does not require separate reporting.

Tax-Exempt Options: Municipal Money Market Funds

A standard money market account held at a bank is not tax-exempt. If you want to shelter interest from federal tax, the relevant vehicle is a municipal money market fund, which invests in short-term municipal debt. Interest from these funds is generally exempt from federal income tax and, if you live in the issuing state, may also be exempt from state and local tax.

This is a different product from a bank money market account, and the risk and liquidity profiles differ. Investors in high tax brackets sometimes prefer municipal options because the effective yield after taxes can exceed that of a taxable money market account.

Money Market Accounts vs. Money Market Funds: Tax Differences

Confusion between these two products is common. A bank money market account is a deposit account; a money market fund is a mutual fund. The tax forms you receive and the way the IRS classifies the income depend on which one you hold.

Penalties, Early Withdrawal, and Tax Implications

Money market accounts do not typically charge early withdrawal penalties the way certificates of deposit do. You can usually access your funds without a tax penalty. However, if you move funds from a money market account into a different investment and sell at a loss or gain, that transaction may trigger capital gains tax, which is separate from the ordinary income tax on the account's interest.

Strategies to Reduce Taxes on Money Market Earnings

• Hold your money market account in a tax-advantaged account, such as an IRA or 401(k), where interest grows tax-deferred or tax-free.
• Compare yields against municipal money market funds if you are in a high tax bracket and can accept the different risk profile.
• Track your interest income throughout the year so estimated tax payments are accurate and you avoid underpayment penalties.
• Consider the tax cost of moving money between a taxable money market account and other taxable investments, since realizing gains creates a taxable event.

Tax planning around a money market account is straightforward because the income is predictable and fully taxable at ordinary rates. The key decisions are where to hold the account and whether a tax-exempt alternative makes sense for your bracket and state of residence.