CD Calculator
Calculate the maturity value and total interest on a Certificate of Deposit (CD) — a fixed deposit at a fixed rate, with compounding.
Inputs
Use APY if compounding is annual. For APR, set the right compounding frequency.
Maturity value
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Total interest
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Effective APY
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Average monthly interest
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About CD Calculator
APR vs APY
APR is the nominal rate. APY is the effective rate including compounding. A 4.50% APR compounded monthly is 4.594% APY. Banks usually advertise APY for CDs.
Early withdrawal
Pulling money out before maturity usually triggers a penalty — often 3 months interest for short-term CDs and 6+ months for longer ones. Plan terms carefully.
Laddering
A common strategy: split your deposit across CDs of different maturities (1, 2, 3, 4, 5 years). As each matures, reinvest into a new 5-year CD. Provides liquidity plus longer-term rates.