Savings calculator
CD Calculator
Estimate a certificate of deposit maturity value using deposit amount, APY, and term length. Results exclude taxes, early-withdrawal penalties, and account-specific rules.
Last reviewed: June 10, 2026
Estimate CD maturity value
Formula
The calculator treats APY as an effective annual yield and prorates it across the selected term using deposit × (1 + APY)months / 12.
How to interpret the result
The maturity value is the estimated balance at the end of the selected term if the CD earns the APY you enter and remains open until maturity. The interest earned line separates the growth from the original deposit, which can help compare terms with different rates.
If two CDs have similar maturity values, review the details outside the calculator: early-withdrawal penalties, renewal behavior, minimum balance rules, deposit insurance limits, and whether the rate is fixed for the full term.
What this estimate excludes
The calculator does not estimate federal, state, or local taxes on interest. It also does not model promotional rate changes, brokered CD rules, callable CDs, or penalties for accessing money early. For laddering concepts, see the CD ladder basics guide.
Common CD comparison mistakes
- Comparing one CD's APY with another product's APR without converting terms.
- Ignoring early-withdrawal penalties when money may be needed before maturity.
- Assuming an automatically renewed CD will keep the same rate.
- Overlooking deposit insurance limits when placing large balances.
Related tools and guides
Compare money market APY growth with the money market calculator, review yield terminology in APR vs APY explained, or plan staged maturities with CD ladder basics.
FAQ
Does this include penalties?
No. Early withdrawal penalties are not included.
Is APY the same as APR?
No. See APR vs APY explained for details.
How to read this maturity estimate
Read maturity value and interest earned together. This page is most useful when it shows how term length and quoted APY change outcome before you compare penalties, renewal settings, and access limits that sit outside yield math.
Before acting, compare result with CD disclosure, APY quote, early-withdrawal penalty schedule, renewal terms, and deposit-insurance limits that apply to your institution. See How We Calculate and the Disclaimer for more context.
Method and verification trail
- Method used: Deposit is projected forward using entered APY over selected months as a simplified maturity estimate.
- Primary source type to verify: CD account disclosure, APY advertisement, fee and penalty schedule, and renewal notice.
- What to confirm in real documents: Whether APY is fixed for full term, whether interest compounds or credits differently, how early-withdrawal penalties are measured, and whether auto-renewal changes access or rate.
- Scope limit: This page does not fully model taxes, callable CDs, brokered CD terms, changing rates after maturity, or institution-specific insurance aggregation rules.
For site-wide methodology, review How We Calculate. For sourcing and corrections standards, review Editorial Policy.