CD Calculator
This CD calculator shows what your certificate of deposit will be worth at maturity. Enter your deposit, the APY and the term — because a CD rate is fixed for the whole term, your return is known the day you open it.
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Show year-by-year breakdown
| Period | Added | Interest | Balance |
|---|
Formula: standard compound-interest math. Figures are estimates, not financial advice.
How a CD works (with a worked example)
A certificate of deposit locks in a fixed rate for a set term. You can’t add money after opening, but the rate is guaranteed — so your return is known the day you open it.
Worked example. Deposit $10,000 into a 3-year CD at a 4.25% APY. Held to maturity, it grows to about $11,357 — roughly $1,357 in interest. Nothing you do changes that number: unlike a savings account, the rate can’t drop mid-term. The trade-off is access — pull the money out early and you typically forfeit several months of interest.
The table below compares what a $10,000 deposit earns at different APYs and terms, so you can shop rates before you lock in.
| APY | 1-year term | 3-year term | 5-year term |
|---|---|---|---|
| 4.00% | $400 | $1,270 | $2,210 |
| 4.50% | $460 | $1,440 | $2,520 |
| 5.00% | $510 | $1,615 | $2,835 |
Estimated interest on a $10,000 deposit, held to maturity. Use your CD’s exact APY for a precise figure.