Yes, you must report all savings account interest as income on your federal tax return

The IRS treats interest earned in a savings account the same way it treats wages or salary—as taxable income. Your bank will send you a Form 1099-INT each January if you earned $10 or more in interest during the previous year. Even if your bank does not send the form, you still owe tax on the interest. The amount is usually small, but the reporting requirement is absolute.

The threshold of $10 is a reporting threshold, not a tax threshold. If you earned $5 in interest, your bank will not send you a 1099-INT, but you still report that $5 on your return. The IRS expects you to add up all interest from all accounts and include it in your taxable income.

State income tax rules vary. Some states do not tax interest income at all, while others tax it at the same rate as federal income. Check your state's tax authority website to learn what applies where you live.

Key Takeaways

  • All savings account interest must be reported on your federal tax return, regardless of the amount.
  • Your bank sends Form 1099-INT if you earned $10 or more in interest during the year, but you report interest even if the form is not sent.
  • Interest is taxed as ordinary income at your regular tax rate, not at a special rate.
  • State tax treatment of interest varies by location, so verify the rules in your state.
  • You report interest on Schedule 1 (Form 1040) or on the interest income line of your tax return, depending on your filing method.

Where interest income appears on your tax return

If you file Form 1040 (the standard federal income tax return), interest income goes on Schedule 1, Part I, line 8. If you use tax software, the program will ask you directly about interest income and place it in the correct spot automatically. The line is labeled "Interest" and is one of the first income categories on the form.

Add up interest from all sources—savings accounts, money market accounts, certificates of deposit (CDs), and any other accounts that paid you interest during the year. Report the total on that single line. You do not need to list each account separately unless the IRS asks you to.

If you received a 1099-INT, attach a copy to your return or keep it with your records. The bank sends a copy to the IRS as well, so the IRS already knows about the income. Reporting it yourself prevents a mismatch that could trigger an audit notice.

How interest income affects your tax bill

Interest is taxed at your marginal tax rate—the rate that applies to your highest dollar of income. If you are in the 12% tax bracket, each dollar of interest adds roughly 12 cents to your federal tax bill (before credits or deductions reduce it). If you are in the 22% bracket, it adds roughly 22 cents per dollar.

The actual impact depends on your total income, filing status, and whether you claim the standard deduction or itemize. A tax software program or a tax professional can show you the exact effect on your return. In most cases, the amount is modest—$5 in interest might add $0.60 to $1.10 to your tax bill—but it still counts.

Interest income also affects whether you owe the Net Investment Income Tax, a 3.8% additional tax that applies if your modified adjusted gross income exceeds certain thresholds ($200,000 for single filers, $250,000 for married filing jointly). Most people with modest savings do not reach this threshold, but it is worth knowing about if you have substantial investment income.

What happens if you do not report interest income

The IRS receives a copy of every 1099-INT your bank sends. Their computers match the forms to your return automatically. If you do not report interest that appears on a 1099-INT, the IRS will notice the discrepancy and send you a notice of underreported income, usually within a year or two of filing.

You will owe the unpaid tax plus interest on that amount (currently around 8% per year). If the IRS determines the underreporting was negligent rather than intentional, you may also owe a 20% accuracy-related penalty on top of the tax and interest. If it was intentional, the penalty can be much higher.

The simplest approach is to report the interest when you file. The amount is almost always small enough that it is not worth the risk of an audit notice and penalties.

Interest from different account types

All interest is reported the same way, regardless of where it comes from. A high-yield savings account, a traditional savings account, a money market account, and a CD all generate interest that must be reported on Schedule 1, line 8. Some accounts pay interest monthly, others quarterly or annually—the frequency does not matter. You report the total interest earned during the calendar year.

If you closed an account during the year, the bank includes all interest earned up to the closing date on the 1099-INT. If you opened an account late in the year and earned a small amount of interest, that amount still goes on your return.

Joint accounts work the same way. If you and another person own an account together, the bank reports the full interest on a single 1099-INT. You and the other owner must decide how to split the income for tax purposes—usually 50-50, but sometimes based on who contributed the funds. Report your share on your return.

Keeping records and organizing your forms

Keep all 1099-INT forms you receive until at least three years after you file your return. The IRS can audit a return up to three years after filing, and you may need to show the forms as proof of the interest you reported. If you file electronically, you do not attach the forms to your return, but you must keep them for your records.

If you have multiple savings accounts at different banks, you will receive multiple 1099-INT forms. Add up the interest from all of them and report the total on Schedule 1, line 8. You do not file separate schedules for each account.

If a bank fails to send you a 1099-INT but you know you earned interest, contact the bank and ask for a copy. If the bank cannot locate the form, ask for a written statement of the interest earned. You can then report that amount on your return even without the official form.

Frequently Asked Questions

What if I earned less than $10 in interest?

Your bank will not send a 1099-INT, but you still report the interest on your tax return. The $10 threshold is only for the bank's reporting requirement, not for your tax obligation. Add up all interest from all accounts and report the total, even if it is $2 or $5.

Do I report interest if I am claimed as a dependent?

Yes. Being claimed as a dependent does not change your obligation to report interest income. You file your own return and report the interest on it. Your parent or guardian cannot claim your interest income on their return instead of yours.

Can I deduct the taxes I paid on interest income?

No. Interest income is added to your taxable income, and you pay tax on it at your regular rate. You cannot deduct the tax you owe on that interest. However, if you paid estimated taxes or had taxes withheld from other income, those payments reduce your overall tax bill.

What if my bank sent me a 1099-INT with the wrong amount?

Contact the bank when ready and ask for a corrected form. The bank will issue a corrected 1099-INT (marked as a correction) and send a copy to the IRS. Report the corrected amount on your return. If you already filed, you may need to file an amended return if the difference is significant.

Does interest from a savings account count toward the standard deduction?

No. Interest income is added to your adjusted gross income, but it does not reduce the standard deduction. The standard deduction is a fixed amount based on your age and filing status. Interest income increases your taxable income, which is separate from the deduction.