CD Calculator — Certificate of Deposit
Calculate CD maturity value and interest. Principal, rate, term, compounding. APY shown.
Use the CD Calculator — Certificate of Deposit
Enter principal, annual rate, term in months, and compounding. Maturity value, interest, and APY are calculated.
CD inputs
Principal, rate, term in months, compounding.
Results
Maturity value
$10,408
Total interest
$408
APY (%)
4.08%
FV = P x (1 + r/n)^(n x t). Term in months to years.
How this calculator works
Maturity value uses compound interest: principal times (1 + rate/n) to the power of (n times years). n = compounding per year.
How to interpret your results
Maturity value is what you get at end of term. APY lets you compare CDs with different compounding.
Common mistakes to avoid
Using nominal rate without checking compounding; ignoring early withdrawal penalties; or assuming rate is locked beyond the term.
FAQs
What is a CD?▾
A certificate of deposit is a time deposit with a fixed rate and term. You earn interest until maturity.
Which inputs matter most?▾
Principal, annual rate, and term. Compounding frequency affects APY and maturity value slightly.
What assumptions does it make?▾
Fixed rate for the full term; no early withdrawal; compounding as selected.
How accurate are the results?▾
Math is exact for your inputs. Real CDs may have different compounding or fee rules.
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