FinanceReviewed Methodology
CD Calculator
A CD calculator helps you estimate certificate of deposit growth by using deposit amount, APY, term length, and compounding frequency assumptions.
FinanceReviewed by Editorial Finance Review
Quick answer
CD growth depends on APY, term length, and compounding schedule.
What this tells you
- •CD growth depends on APY, term length, and compounding schedule.
- •This calculator estimates ending balance at maturity.
- •Results do not include penalties or taxes.
How to Use
- 1Enter deposit amount.
- 2Enter APY and term in months.
- 3Choose compounding frequency.
- 4Calculate to view estimated maturity balance and interest earned.
How It Works
Formula
Ending balance = Deposit x (1 + APY/compounds)^periodsThe calculator applies compound interest for the selected term and compounding frequency.
Calculation note: values are processed in the order shown above, using the current input units.
Worked Examples
CD maturity estimate
Deposit$10,000
A P Y4.8%
Term24 months
ResultShows estimated maturity balance and interest earned
Longer terms and higher APY generally increase projected CD earnings.
Common mistakes
- Confusing APR with APY
- Ignoring potential early withdrawal penalties
- Assuming future CD renewal rates stay the same
Limitations
This estimate assumes fixed APY and compounding through the full term. It does not account for taxes, fees, or early withdrawal penalties.
Frequently Asked Questions
It estimates ending CD balance and interest earned at maturity based on fixed assumptions.
No. Penalties vary by institution and are not modeled in this estimate.
Rates are set by the institution and can vary by product and term.