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CD Calculator

Enter your deposit, APY and term to see what your CD is worth at maturity, the interest after federal tax, and how other terms compare.

CD calculator

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Balance at maturity

$10,410.00

Interest earned $410.00

Federal tax on interest (22%)
$90.20
Interest after federal tax
$319.80
Equivalent APR (monthly compounding)
4.025%

Same APY, other terms

3 months
$100.96
6 months
$202.94
12 months
$410.00
18 months
$621.26
24 months
$836.81
36 months
$1,281.12
60 months
$2,225.13

CD interest is taxed as ordinary income in the year it's credited, even if you don't withdraw it. State tax is not included.

Interest earned at 4.00% APY

Deposit6 mo1 yr2 yr5 yr
$5,000$99$200$408$1,083
$10,000$198$400$816$2,167
$25,000$495$1,000$2,040$5,416
$50,000$990$2,000$4,080$10,833
$100,000$1,980$4,000$8,160$21,665

APY (annual percentage yield) already includes compounding, so a CD at 4% APY grows exactly 4% in a year no matter how often interest is credited. Deposits at FDIC-insured banks and NCUA-insured credit unions are protected up to $250,000 per depositor, per institution, per ownership category. Withdrawing before maturity usually costs several months of interest.

Frequently asked questions

How much interest will $10,000 earn in a 1-year CD?

At 4% APY, $400. At 4.5% APY, $450. Interest is taxable as ordinary income in the year it's credited.

What's the difference between APY and APR?

APR is the simple annual rate; APY includes the effect of compounding. Banks quote APY on deposits, so use it to compare CDs.

Are CDs better than a high-yield savings account?

A CD locks in a rate for the term, which helps if rates fall; a savings account lets you withdraw anytime but its rate can change. CDs usually charge a penalty for early withdrawal.

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