See exactly how much your CD could earn
Enter your deposit, advertised APY and term. Compare it with another rate to see how much choosing a better CD could add to your savings.
Your CD details
Estimated results
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See current CD offers from banks and credit unions available in your area.
Uses advertised APY
APY already reflects compounding, so the calculator avoids counting compounding twice.
No personal information
Your numbers stay in your browser. The calculator does not ask for account or identity information.
Built for comparisons
Compare a competitive rate with your current bank’s rate and see the estimated dollar difference.
How the CD calculator works
The calculator applies the advertised annual percentage yield to your deposit for the selected portion of a year. For a 12-month CD, a $25,000 deposit earning 4.25% APY would earn approximately $1,062.50 if the money remains deposited for the full term.
What this estimate does not include
- Early-withdrawal penalties
- Taxes on interest earnings
- Promotional requirements or membership fees
- Rate changes on variable-rate products
Common questions about CD earnings
How do you calculate CD interest?
Start with the deposit, the advertised APY and the length of the term. For a 12-month CD, a $10,000 deposit at 4.00% APY would earn about $400 if it stays in the account until maturity. Shorter terms earn a fraction of a full year, and the exact amount can vary slightly because institutions use different compounding and rounding methods.
Should I enter APY or APR?
Use the APY shown by the bank or credit union. APY includes the effect of compounding and is the standard number used to compare deposit accounts. If an institution gives you an APR instead, use the APY and APR calculator before estimating the earnings.
Does a higher APY always make a CD the better choice?
Not by itself. I would also check the term, minimum deposit, early-withdrawal penalty, eligibility rules and what happens when the CD matures. A slightly lower rate may be more practical if it gives you the timing or access you need.
What should I do after estimating the return?
Compare the result with current offers in your local market. If you open a CD, record its maturity date and grace period in the free CD Maturity Tracker so an automatic renewal does not catch you by surprise.
Important: Results are estimates for educational purposes and are not financial advice. Actual earnings can differ because of account terms, withdrawal timing, fees and rounding. Confirm the APY, maturity date and early-withdrawal penalty directly with the financial institution before opening an account.