Is Savings Interest Taxable? IRS Rules, Reporting, and State Tax

Yes, savings interest is taxable. The IRS treats interest earned in a savings account as ordinary income, meaning it gets added to your wages and other earnings and taxed at your marginal rate, which runs from 10 percent to 37 percent for 2026.¹ You owe tax on every dollar of interest the account earns, even the small amounts that never trigger a form from your bank.²

How the IRS Taxes the Interest

Federal law defines gross income broadly and names interest as one of its components.³ Unlike long-term capital gains, savings interest gets no preferential rate. It sits in the same pile as your paycheck.

For 2026, the federal brackets for a single filer are:¹

10% on taxable income up to $12,400
12% on $12,401 to $50,400
22% on $50,401 to $105,700
24% on $105,701 to $201,775
32% on $201,776 to $256,225
35% on $256,226 to $640,600
37% above $640,600

The interest gets taxed at whatever bracket your top slice of income already falls into. Someone in the 22 percent bracket earning $800 in savings interest owes about $176 in federal tax on it.

If your modified adjusted gross income exceeds $200,000 (single) or $250,000 (married filing jointly), a separate 3.8 percent Net Investment Income Tax applies on top of your ordinary rate, and savings and CD interest counts.⁴ The surtax hits the lesser of your net investment income or the amount by which your income exceeds the threshold.⁵ Well above the threshold, the effective federal rate on that interest can reach 40.8 percent.

When the Interest Becomes Taxable

Interest is taxable the moment your bank credits it, not when you withdraw it. This is the constructive receipt rule: if the money is available to you, the IRS treats it as received.⁶ A savings account that posts interest monthly generates twelve separate taxable events during the year.

The same rule applies to CDs. If your bank credits interest monthly on a two-year CD, you owe tax on it each year as it posts, even while the principal is locked up. U.S. savings bonds are the main exception, discussed below.

Which of Your Accounts Produce Taxable Interest

Any account that pays you for keeping money on deposit produces taxable interest:

Traditional, high-yield, and online savings accounts
Certificates of deposit, taxed each year as interest is credited
Money market accounts, taxed the same way as a savings account

Series EE and I savings bonds work differently. You can choose to report the interest each year as it accrues, or defer reporting until you cash the bond or it matures, whichever comes first.⁷ Most people defer, which means decades of interest can land on a single return. Savings bond interest is subject to federal income tax but exempt from state and local tax. If the proceeds go to qualified higher education expenses, the interest may be excluded from federal tax entirely, subject to income phase-outs and issuance rules.⁸

Interest That Escapes Federal Tax

Some interest doesn’t hit the taxable side of the return. Municipal bonds issued by state and local governments generally pay interest that is exempt from federal income tax.² You still report it on line 2a of Form 1040, but reporting doesn’t make it taxable.⁹

U.S. Treasury bills, notes, and bonds work in reverse: fully taxable federally, exempt from state and local tax. In a high-tax state, that distinction can meaningfully improve your after-tax return compared to a bank savings account paying the same rate.

Accounts Where Interest Grows Sheltered

Several account types let interest compound without an annual tax bill, in exchange for locking the money to a specific purpose.

Interest inside a traditional IRA isn’t taxed the year it’s credited. You pay income tax when you take withdrawals in retirement.¹⁰ Roth IRAs go further: you contribute after-tax money, interest grows tax-free, and qualified withdrawals after age 59½ (with the account open at least five years) come out federally tax-free.

Health savings account interest isn’t taxed as long as the money eventually goes to qualified medical expenses.¹¹ Contributions are deductible and qualified withdrawals are tax-free, though you need a high-deductible health plan to be eligible.

Earnings inside a 529 plan, including interest, are not subject to federal tax when withdrawn for qualified education expenses.¹² Contributions aren’t federally deductible, but many states offer their own deduction or credit.

Reporting the Interest on Your Return

Your bank or credit union sends Form 1099-INT if it paid you $10 or more in interest during the year. Box 1 shows the total taxable interest.¹³ The bank sends the IRS a copy at the same time, so the agency already knows the number before you file.

Earn less than $10 at a given institution and you won’t get a form, but you still owe the tax and still have to include it on your return.² This is where people slip up. The IRS matching system compares what banks report against what you file, and small gaps generate automated notices.

Once your total taxable interest for the year exceeds $1,500, you must file Schedule B of Form 1040, which lists each source separately.¹⁴

Backup Withholding

Banks are sometimes required to withhold 24 percent of your interest and send it to the IRS. This usually happens when you haven’t given the bank a valid taxpayer identification number, or when the IRS has notified the bank that you previously underreported interest.¹⁵ The withheld amount appears on your 1099-INT and counts as a tax payment when you file.

The Early Withdrawal Penalty Deduction on CDs

If you break a CD before it matures, the bank typically charges a penalty, often several months’ worth of interest. That penalty is deductible as an adjustment to income on Schedule 1 of Form 1040 (Line 18), which reduces your taxable income whether or not you itemize. The penalty amount usually appears on your 1099-INT or 1099-OID.

Estimated Tax Payments on Interest Income

Savings interest has no tax withheld automatically unless backup withholding applies. If your interest is large enough that you’ll owe $1,000 or more in total tax beyond what your job’s withholding covers, the IRS expects quarterly estimated payments.¹⁶ You can generally avoid an underpayment penalty by paying at least 90 percent of the current-year tax or 100 percent of last year’s tax through withholding and estimated payments combined. For most people with a regular paycheck and moderate interest income, bumping up W-4 withholding is simpler than mailing quarterly checks.

What Happens If You Don’t Report It

Because banks file 1099-INTs directly with the IRS, unreported interest is among the easiest omissions for the matching system to catch. A mismatch typically generates a CP2000 notice proposing additional tax plus interest on the unpaid amount.

If the underreporting is large enough to count as a substantial understatement, the IRS can add an accuracy-related penalty equal to 20 percent of the underpayment.¹⁷ For a few hundred dollars of missed interest, the penalty math is modest. Combined with interest on the overdue balance, even small omissions grow into avoidable bills.

State Tax on Savings Interest

Most states with an income tax treat savings interest as ordinary income, the same way the federal government does. Rates run from zero in states with no income tax to more than 13 percent at the top end, so your combined burden on interest can be well above the federal rate alone. One point worth keeping in mind: interest from U.S. Treasury securities and savings bonds is exempt from state and local income tax in every state, which can give Treasuries a real edge over a bank savings account on an after-tax basis.⁷

1
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
2
Internal Revenue Service. Topic No. 403, Interest Received
3
Office of the Law Revision Counsel. 26 USC 61 – Gross Income Defined
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Office of the Law Revision Counsel. 26 USC 1411 – Imposition of Tax
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Internal Revenue Service. Net Investment Income Tax
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eCFR. 26 CFR 1.451-2 – Constructive Receipt of Income
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TreasuryDirect. Tax Information for EE and I Bonds
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Internal Revenue Service. Exclusion of Interest From Series EE and I US Savings Bonds Issued After 1989
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Internal Revenue Service. Instructions for Schedule B (Form 1040)
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Internal Revenue Service. Traditional IRAs
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Internal Revenue Service. Publication 969 (2025), Health Savings Accounts and Other Tax-Favored Health Plans
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Internal Revenue Service. 529 Plans: Questions and Answers
13
Internal Revenue Service. Instructions for Forms 1099-INT and 1099-OID
14
Internal Revenue Service. About Schedule B (Form 1040), Interest and Ordinary Dividends
15
Internal Revenue Service. Backup Withholding
16
Internal Revenue Service. Estimated Taxes
17
Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments