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Toolbench

CD & APY calculator

Calculate Certificate of Deposit (CD) interest earnings, APY compounding, and final balance at maturity.

In your browser

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Top US CDs offer ~4.5%–5.2% APY
Total Interest Earned
Ending Balance at Maturity

Initial Principal
Average Interest / Month
Term Length

Annual Yield (APY)

FDIC and NCUA insured CDs guarantee your principal deposit and fixed return up to $250,000 per depositor. Early withdrawal penalties apply if cashed before maturity.

About this tool

Calculate the return on a Certificate of Deposit (CD) or high-yield savings account. Enter your deposit amount, term length from 6 months to 5 years, and annual percentage yield (APY) with daily or monthly compounding.

How to use it

  1. 1 Pick a CD term preset (6 months, 1 year, 2 years, etc.) or type custom months.
  2. 2 Enter your principal deposit amount in dollars ($).
  3. 3 Enter the bank APY % to see total interest earned and final balance at maturity.

Questions

What is the difference between APR and APY on a CD?

APR is the simple annual interest rate without compounding, whereas APY (Annual Percentage Yield) reflects the true annual return including compound interest.

Are CDs safe in the United States?

Yes. CDs from FDIC-insured banks or NCUA-insured credit unions are backed by the US federal government up to $250,000 per depositor, per institution.

Is my data uploaded?

No. This tool runs in your browser, so your text and files never reach our server.

Is this tool free?

Yes. It’s free to use with no sign-up and no limits for normal use.