CD Calculator

Estimate the value of a fixed-rate certificate of deposit held to maturity. Enter the advertised annual percentage yield (APY), which already reflects compounding.

Enter your values to see an estimate. Enter 0 for amounts that do not apply.

How this calculator works

Maturity value = deposit × (1 + APY / 100) raised to months / 12. Interest is maturity value minus your deposit. The APY is an annual effective yield, not a nominal rate divided by 12.

Worked example

A deposit of 10,000 at 5% APY for 12 months earns 500 and matures at 10,500 in the selected currency.

Assumptions and limits

Years are approximated as months / 12; actual bank day-count conventions can differ. Assumes a fixed APY and reinvested interest. Excludes taxes, early-withdrawal penalties and fees; it does not promise a rate or deposit protection.

How to choose your inputs

Use the deposit amount you can leave untouched until maturity and the APY shown for that exact certificate and term. APY already includes compounding; entering a nominal interest rate in its place changes the estimate. Match the entered term to the offer rather than using the advertised rate for a different maturity.

How to interpret your result

Compare the interest earned with the date you will need the money. A higher maturity value does not show whether an early withdrawal would erase the advantage. This model retains interest and approximates years from months; use the issuer’s actual maturity disclosure for dates, payout choices and penalties, and check deposit coverage separately.

Primary references

This educational estimate uses your inputs. It is not individualized financial, tax, insurance, or investment advice, a lender offer, approval decision, or a promise of future results.

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