CD Calculator – Certificate of Deposit Returns & Best Rates
Calculate how much your Certificate of Deposit (CD) will earn with compound interest. Compare different terms, APY rates, and compounding frequencies to find the best CD for your savings goals.
$
%
mo
Your CD Returns
Final Balance
$10,512
Total Interest Earned
$512
Effective Annual Yield
5%
💡 CD Ladder Strategy
Instead of putting all your money in one CD, consider splitting it across multiple CDs with staggered maturity dates (e.g., 3-month, 6-month, 12-month). As each CD matures, reinvest at the current rate. This strategy gives you both higher returns and regular access to your funds — a smart way to hedge against rate changes.
Frequently Asked Questions
What is a Certificate of Deposit (CD)?
A CD is a savings account that holds a fixed amount of money for a fixed period of time (term). In return, the bank pays you a fixed interest rate — typically higher than a regular savings account. You cannot withdraw the money before the term ends without paying an early withdrawal penalty.
How is CD interest calculated?
CD interest uses compound interest: A = P(1 + r/n)^(n*t). Your money grows faster with more frequent compounding (daily > monthly > quarterly > annually). The APY already accounts for compounding, so higher APY with more frequent compounding yields the best return.
What is the difference between APY and APR?
APY (Annual Percentage Yield) accounts for compound interest. APR (Annual Percentage Rate) is the simple rate without compounding. Always compare CDs by APY — it shows the actual return you will earn in one year including compounding effects.
Related Calculators
More tools to help with your savings & interest planning
How to Use the CD Calculator
- Enter your initial deposit — the amount you plan to put in the CD.
- Enter the APY — this is the annual rate including compounding. Shop around: as of 2026, top CDs offer 4.5-5.5% APY.
- Choose your term length — longer terms typically offer higher rates but lock up your money.
- Select compounding frequency — daily compounding gives the highest return for the same APY.