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CD Calculator Guide
See what a certificate of deposit (CD) will be worth at maturity. Enter your deposit, rate, term, and compounding frequency to find the final value, interest earned, and annual percentage yield (APY).
Maturity value = P(1 + r/n)^(nt). APY = (1 + r/n)^n − 1 shows the true yearly return once compounding is included.
How Much Will a CD Earn?
Multiply your deposit by one plus the periodic rate, compounded over the full term. For example, $10,000 in a 2-year CD at 4.5% compounded monthly grows to about $10,940, earning roughly $940.
APR vs APY
APR is the stated annual rate, while APY includes the effect of compounding and is slightly higher. When comparing CDs, APY is the number that reflects what you actually earn in a year.
These results are estimates for education and planning, not financial advice. Actual returns, rates, and terms vary — check with a qualified professional before making decisions.
Related: Compound Interest, Savings Goal, and Simple Interest.
Frequently Asked Questions
How much will my CD earn?
Enter your deposit, rate, term, and compounding frequency, and the calculator shows the maturity value and interest earned.
What is APY?
Annual percentage yield is the real yearly return once compounding is included, which is why it is a bit higher than the stated APR.
Is CD interest compounded?
Most CDs compound daily or monthly, and this calculator lets you choose the frequency to match your account.
What happens if I withdraw early?
Most CDs charge an early-withdrawal penalty, which this calculator does not include; check your CD's terms.
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