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CD Calculator

Calculate what a certificate of deposit will be worth at maturity from the deposit, APY and term. Switch to an interest rate with compounding. Free.

Loan term
yrmo
Maturity value
$10,450.00
Interest earned
$450.00
Effective annual rate
4.5%

APY, rate and what you'll earn

US banks quote CDs by their annual percentage yield (APY), which already includes compounding. That makes the maths simple: a 10,000 CD at 4.50% APY for one year is worth 10,450 at maturity. For other terms, the balance grows by the APY for each year, including part years. If you only know the interest rate (APR), untick the APY box and choose how often the bank compounds, usually daily or monthly. CDs are FDIC-insured up to 250,000 per depositor, per bank.

How to use it

  1. 1

    Enter the deposit

    How much you'll put in the CD.

  2. 2

    Add the APY and term

    The CD's APY and its term in years and months.

  3. 3

    See the maturity value

    And the interest you'll earn before tax.

Frequently asked questions

What's the difference between APY and APR?

APR is the yearly interest rate before compounding; APY includes compounding. 4.40% compounded daily is about a 4.50% APY.

What happens if I withdraw early?

Most CDs charge an early withdrawal penalty, often several months of interest. No-penalty CDs exist but usually pay less.

Is CD interest taxable?

Yes, as ordinary income in the year it's credited, even if you don't withdraw it. The bank sends a 1099-INT.

Is anything sent to a server?

No. Everything is calculated in your browser, and nothing you type is stored or sent anywhere.

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