Banking

Is CD Interest Taxable? What to Know Before Filing

Reviewed by Unpack Money Research Desk · Updated October 2026 · Our review process

Quick answer

Yes. Interest from a certificate of deposit is taxable as ordinary income in the year the bank credits it to your account — even if the CD hasn't matured and you haven't withdrawn a cent. Banks report it to you and the IRS on Form 1099-INT when it's $10 or more. There is no special 'CD tax rate'; it's taxed like wages, at your marginal income-tax rate.

The one-paragraph version

The tax rule that surprises CD holders is timing. Buy a 5-year CD and the interest it earns in year one is taxable in year one — the IRS doesn't wait for maturity. Each year, the bank credits interest, reports it on Form 1099-INT (for $10 or more), and you add it to your taxable income. On a multi-year CD, that means paying tax on money you can't touch without penalty.

The rate side is simple: CD interest is ordinary income, taxed at your marginal bracket like salary. A hypothetical $1,000 of CD interest costs a 22%-bracket filer about $220 in federal tax. (State treatment varies — most states follow the federal lead, but check yours.) These figures illustrate the mechanics; your actual tax depends on your total income.

How it's reported

Form 1099-INT arrives by January 31 showing interest credited the prior year in Box 1, and any early-withdrawal penalty you paid in Box 2. Report Box 1 as interest income; Box 2's penalty is deductible as an adjustment to income — meaning it reduces your taxable income even if you don't itemize.

Edge cases: if the CD is inside an IRA, the interest grows tax-deferred (traditional) or tax-free (Roth, qualified) — the 1099 still arrives but the tax treatment follows the account type. And U.S. Treasury interest is exempt from state tax, which is one reason some savers compare T-bills against CDs — but bank CD interest gets no state exemption.

Planning around the tax drag

For most savers the tax is just a haircut to account for, not a reason to avoid CDs: a hypothetical 4.50% CD nets about 3.51% after a 22% federal tax bite — still far ahead of a near-zero traditional savings account. Where planning matters is bunching: a large CD maturing in one year can push interest income — and possibly you — into a higher bracket, so staggering maturities across years (a side benefit of laddering) smooths the tax hit too.

One more planning note: because tax is due on credited interest annually, a long-term CD funded with money you'll need for the tax bill itself creates a small cash-flow wrinkle. Keep a modest buffer in savings rather than locking literally everything.

Common mistakes

The classic error is ignoring a 1099-INT because 'I didn't withdraw anything' — the IRS received its copy too, and matching notices follow. Another is forgetting small amounts under $10: banks aren't required to send the form, but the income is still legally reportable. And don't confuse the penalty deduction with a credit — it reduces taxable income, it doesn't reduce tax dollar-for-dollar.

What this means for you

CD interest is ordinary income, taxed each year it's credited — maturity doesn't defer it. Expect the 1099-INT, report every dollar, deduct any early-withdrawal penalty as an adjustment, and remember the after-tax yield is the number that actually matters when comparing accounts.

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