You owe federal income tax on the interest your HYSA earns, and possibly state income tax too

Any interest your high yield savings account generates counts as taxable income. The IRS treats it the same way it treats interest from a regular savings account, a money market account, or a certificate of deposit. The difference is that a HYSA earns more interest, so you'll owe more tax on it — which is actually a good problem to have.

Your bank will send you a Form 1099-INT each January if your account earned $10 or more in interest during the previous year. You report that amount on your federal tax return. Some states also tax interest income, though a few do not. The tax is due when you file your return, typically by April 15.

The amount you owe depends on your tax bracket. If you're in the 22% federal bracket and earned $500 in interest, you'd owe roughly $110 in federal tax on that interest alone. State tax, where it applies, is additional.

Key Takeaways

  • Interest from a HYSA is taxable income and must be reported on your federal tax return using the Form 1099-INT your bank sends you.
  • You owe federal income tax at your marginal tax rate, and state income tax in most states, on all interest earned during the year.
  • Banks report interest of $10 or more on Form 1099-INT, but you must report any amount, even if you don't receive the form.
  • The tax is due when you file your return, not when the interest is deposited, so you may need to set aside money to cover it.
  • Tax-advantaged accounts like Roth IRAs and 529 plans can hold HYSAs without triggering tax on the interest, depending on the account type and rules.

How the IRS knows about your interest income

Your bank tracks every deposit of interest into your account and reports the total to the IRS on Form 1099-INT. The bank sends you a copy and files a copy with the IRS. The IRS then cross-checks your tax return against what the bank reported. If you don't report the interest, the IRS will notice the mismatch.

You must report interest even if you earned less than $10 and didn't receive a Form 1099-INT. The $10 threshold is only when the bank is required to send you the form — it doesn't mean you can ignore smaller amounts. Unreported interest, even $5, can trigger an audit or a penalty.

What your tax bracket means for HYSA interest

The tax you owe on HYSA interest depends on your marginal tax rate — the percentage bracket you fall into based on your total income for the year. If you earn $50,000 and your HYSA generates $1,000 in interest, that $1,000 is added to your $50,000, making your taxable income $51,000. The tax on that extra $1,000 is calculated at whatever rate applies to income in that range.

For 2024, federal tax brackets range from 10% to 37%. Most people fall into the 12% or 22% bracket. So if you're in the 22% bracket and earn $500 in HYSA interest, you'll owe about $110 in federal tax on that interest. If you're in the 12% bracket, you'd owe about $60.

State income tax rates vary widely. Some states have no income tax at all (Florida, Texas, Wyoming, and others). Some have a flat rate (Colorado at 4.4%, Illinois at 4.95%). Others use brackets similar to the federal system. You need to know your state's rate to estimate your total tax bill.

When you actually have to pay the tax

The tax on HYSA interest is not withheld automatically like payroll tax. Your bank deposits the interest into your account, and you keep it. When you file your tax return, you report the interest and calculate what you owe. The payment is due by April 15 of the following year (or the next business day if April 15 falls on a weekend).

This means you need to plan ahead. If you earned $2,000 in interest and you're in the 22% federal bracket plus a 5% state bracket, you'll owe roughly $540 in tax. If you spent that interest already, you'll need to find the money to pay the tax bill. Many people set aside a portion of their interest earnings in a separate account to cover the tax liability.

If you expect to owe a large amount, you can make quarterly estimated tax payments to the IRS using Form 1040-ES. This is common for self-employed people and retirees, but it also applies if your interest income is substantial enough that you'd owe more than $1,000 in tax.

How to reduce the tax on HYSA interest

You cannot avoid the tax, but you can reduce it by holding your HYSA inside a tax-advantaged account. A Roth IRA allows you to earn interest tax-free as long as you follow the account rules (you can't withdraw the money before age 59½ without penalties, with some exceptions). A 529 education savings plan also grows tax-free if the money is used for may have access to education expenses. Some employers offer Health Savings Accounts (HSAs), which allow tax-free growth if the money is used for medical costs.

These accounts have contribution limits and withdrawal rules, so they're not a fit for all savings. But if you're saving for retirement or education and you have room in these accounts, moving your HYSA there can eliminate the tax on interest.

For money you need to keep accessible and outside retirement accounts, there's no way to avoid the tax. You can only minimize it by keeping your overall income below a certain threshold (which is rarely practical) or by earning less interest (which defeats the purpose of a HYSA).

Reporting interest on your tax return

When you receive Form 1099-INT from your bank, it will show the total interest earned in box 1. You report this amount on Schedule B (Interest and Ordinary Dividends) if your interest income is more than $1,500, or directly on Form 1040 if it's $1,500 or less. The interest then flows to your Form 1040, where it's added to your other income.

If you have multiple HYSAs or savings accounts, each bank sends a separate Form 1099-INT. You add up all the interest from all the forms and report the total. Keep copies of all your 1099-INT forms with your tax records for at least three years in case the IRS asks questions.

If you made a mistake on a previous return and didn't report HYSA interest, you can file an amended return using Form 1040-X. It's better to correct it yourself than to wait for the IRS to catch it, because the IRS charges penalties and interest on unpaid tax.

State taxes on HYSA interest

Most states tax interest income the same way the federal government does. Nine states have no income tax at all: Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, Wyoming, and New Hampshire (which taxes only interest and dividends, not wages). If you live in one of these states, you owe only federal tax on your HYSA interest.

If you live in a state with income tax, you'll report your interest on your state return as well. Some states use the same Form 1099-INT that your bank sends to the IRS. Others require you to report it separately. Check your state's tax agency website or your state tax form instructions to see how to report interest income.

If you moved during the year, you may owe tax to two states. The state where you lived when the interest was earned typically gets the tax, but rules vary. This is especially important if you moved from a high-tax state to a no-tax state or vice versa.

Frequently Asked Questions

Do I have to report HYSA interest if I earned less than $10?

Yes. The $10 threshold only determines whether your bank must send you a Form 1099-INT. You are required to report all interest income, regardless of the amount. The IRS can cross-check your account statements, so unreported interest can trigger an audit.

Can I deduct HYSA interest as a loss on my taxes?

No. Interest income is taxable, but you cannot deduct it as a loss. You report the full amount as income. The only way to reduce the tax is to earn the interest inside a tax-advantaged account like a Roth IRA or 529 plan.

What if my bank didn't send me a Form 1099-INT but I earned interest?

You still must report the interest. Banks are only required to send the form if interest is $10 or more, but you owe tax on any amount. Check your account statements to find the total interest earned and report it on your return.

Does HYSA interest count toward my income for Social Security or Medicare purposes?

Yes. Interest income is counted as part of your total income, which can affect your Social Security tax (if you're still working and receiving benefits) and your Medicare premiums. Higher income can trigger higher Medicare Part B and Part D premiums.

What if I earned interest in a HYSA I opened late in the year?

You report the interest for the calendar year in which it was earned, even if you only had the account for a few months. If you opened the account in November and earned $50 in interest by December 31, you report that $50 on your next year's tax return.