Yes, interest income is generally taxed as ordinary income. That means the interest your bank, broker, or bond issuer pays you gets stacked on top of your wages and taxed at your regular federal rate, which for 2026 runs from 10% to 37% depending on filing status and total taxable income.1Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 There is no preferential rate the way there is for qualified dividends or long-term capital gains. A few specific categories get carved out (Treasuries escape state tax, municipal bonds escape federal tax, and certain savings bonds used for education can escape both), but the default rule is ordinary rates.
What “Ordinary Income” Treatment Actually Means for You
Federal law treats interest credited to your account or received by you as fully taxable gross income.2eCFR. 26 CFR 1.61-7 – Interest Qualified dividends and long-term capital gains sit in a separate bucket with preferential rates of 0%, 15%, or 20%. Interest does not. A dollar of interest and a dollar of wages face the same marginal rate.
The practical effect is easy to underestimate. If you’re in the 24% bracket, a savings account paying 4% is really giving you closer to 3% after federal tax. Someone comparing a bond yield to a stock’s dividend yield without adjusting for that difference tends to overstate how attractive the bond looks.
Timing matters too. Interest becomes taxable in the year it’s available to you, not the year you decide to withdraw it. If your bank credits interest to your account in December, you owe tax on it for that year even if you don’t touch the money until March. The IRS calls this constructive receipt, and it catches people off guard with CDs and deferred-interest accounts.3eCFR. 26 CFR 1.451-2 – Constructive Receipt of Income
Which Interest Sources Are Taxed This Way
Ordinary-rate treatment applies to the interest most people actually earn. That includes:
- Savings accounts, checking accounts, and money market deposit accounts
- Certificates of deposit
- Credit union share account “dividends,” which the tax code classifies as interest even though the institution calls them dividends4Internal Revenue Service. Publication 550 – Investment Income and Expenses
- Corporate bond interest, whether from individual bonds or bond mutual funds
- Interest from private loans, including seller-financed mortgages and loans to family members
- Interest paid on a federal income tax refund5Internal Revenue Service. Topic No. 403 – Interest Received
Banks and brokers send you Form 1099-INT when they’ve paid you $10 or more during the year, but the threshold is a reporting rule, not a taxation rule.6Internal Revenue Service. About Form 1099-INT, Interest Income Amounts under $10 are still taxable. The IRS matches 1099 data against returns automatically, so leaving off even a small amount that a payer did report is one of the fastest ways to trigger a notice.
The Exceptions Worth Knowing
The exceptions are narrow, but they can meaningfully change your after-tax return.
Treasury Interest Is Federally Taxable, State-Exempt
Interest from Treasury bills, notes, and bonds is fully taxable at the federal level as ordinary income. What Treasuries offer is a state-level shield: federal law prohibits states from taxing obligations of the United States government.7Office of the Law Revision Counsel. 31 USC 3124 – Exemption From Taxation In a high-tax state, that exemption can raise the after-tax yield of a Treasury noticeably above a CD or corporate bond paying the same headline rate.
Series EE and Series I savings bonds follow the same pattern — federally taxable, state-exempt — with the added flexibility that you can defer reporting the interest until you redeem the bond or it matures.
Municipal Bond Interest Is Generally Federally Exempt
Interest from bonds issued by state and local governments is generally excluded from federal gross income.8Office of the Law Revision Counsel. 26 USC 103 – Interest on State and Local Bonds For a taxpayer in the 37% bracket, a 3.5% muni yield can beat a 5% corporate yield after tax. If the bond was issued by your own state or a locality within it, the interest is typically exempt from that state’s income tax as well. Interest on an out-of-state muni is usually subject to your state’s income tax.
One caveat: interest on certain private activity bonds can be treated as a preference item for the alternative minimum tax.9Municipal Securities Rulemaking Board. Tax Treatment The 2026 AMT exemption ($90,100 for single filers and $140,200 for joint filers) keeps most individuals clear, but higher-income investors should check whether a muni fund holds private activity bonds before assuming every distribution is fully tax-free.1Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
The Education Savings Bond Exclusion
Series EE and I bonds issued after 1989 can qualify for a full federal exclusion if you use the proceeds for qualified higher education expenses.10Office of the Law Revision Counsel. 26 USC 135 – Income From United States Savings Bonds Used to Pay Higher Education Tuition and Fees The bond owner must have been at least 24 years old when the bond was issued, and the expenses must be for the owner, a spouse, or a dependent.11TreasuryDirect. Using Bonds for Higher Education The exclusion phases out at higher incomes, married couples must file jointly, and you claim it on Form 8815. It’s one of the few ways to make interest income completely tax-free at both federal and state levels.
High Earners Face an Extra 3.8% on Top
Interest is investment income for purposes of the net investment income tax, which adds 3.8% on top of your ordinary rate when your modified adjusted gross income crosses these thresholds:12Office of the Law Revision Counsel. 26 USC 1411 – Imposition of Tax
- Married filing jointly: $250,000
- Single or head of household: $200,000
- Married filing separately: $125,000
These thresholds are not indexed for inflation, so more taxpayers cross them each year. The tax applies to the lesser of your net investment income or the amount your modified AGI exceeds the threshold. Taxable interest counts; tax-exempt muni interest does not.13Internal Revenue Service. Questions and Answers on the Net Investment Income Tax Someone in the 37% bracket with meaningful interest income can face an effective 40.8% federal rate on that interest, which shifts the math on munis versus taxable bonds considerably.
Where Interest Goes on Your Return
Taxable interest goes on Form 1040, line 2b. Tax-exempt interest from munis goes on line 2a. Reporting the tax-exempt piece doesn’t add to your tax, but the IRS still wants to see it, and it feeds into other calculations like the NIIT threshold and how much of your Social Security benefit becomes taxable.
If your taxable interest exceeds $1,500, you have to complete Schedule B.4Internal Revenue Service. Publication 550 – Investment Income and Expenses You also need Schedule B if you’re claiming the education savings bond exclusion or received interest as a nominee. Below $1,500 with no special conditions, you can report interest directly on Form 1040 and skip the schedule.14Internal Revenue Service. Instructions for Schedule B (Form 1040)
One deduction that’s easy to miss: if you cashed a CD early and paid a penalty, it shows up in Box 2 of your 1099-INT. You can deduct it as an adjustment to income whether or not you itemize, which directly reduces the amount of interest you’re taxed on.