Cd CalculatorCd Calculator guide
How CDs Work
A certificate of deposit, or CD, is a deposit account that typically offers a fixed APY for a fixed term. The tradeoff is simple: more rate certainty, less access to cash before maturity.
What a certificate of deposit is
A CD is commonly used when a saver can set money aside for a defined period. In exchange, the account may offer a stated APY that is fixed for that term, subject to the institution’s account agreement.
CD terms and APY
The term is the time your money is assumed to stay in the CD, such as 6, 12, 24 or 60 months. APY means annual percentage yield and reflects compounding over one year, which is why it is useful for comparing deposit products.
CD maturity and renewal choices
At maturity, the institution may allow a grace period to withdraw funds, renew the CD or move the money elsewhere. Automatic renewal terms can matter because a renewed CD may have a different APY or term.
Early withdrawal risk
Many CDs charge a penalty if funds are withdrawn before maturity. That penalty may reduce interest earned and, depending on the account terms, may reduce principal if the penalty exceeds accrued interest.
FDIC insurance basics
Many bank CDs are FDIC insured when issued by an FDIC-insured institution and kept within applicable ownership and coverage limits. Coverage depends on the institution and account ownership category, not on this calculator.
How to estimate a CD before opening one
Estimate the maturity balance, interest earned and date range before comparing official offers. Then verify the APY, term, minimum deposit, penalty rules, renewal policy and insurance coverage with the institution.
Related calculator
Use the CD Calculator to turn these concepts into an estimate. Enter deposit amount, APY and term to estimate maturity value and interest earned.
Source context: review the Consumer Financial Protection Bureau explanation at consumerfinance.gov and FDIC deposit insurance information at fdic.gov.
This calculator provides estimates for educational purposes only. It is not a bank quote, tax advice, legal advice or personalized financial advice. Actual earnings and penalties depend on the financial institution's terms, compounding method, dates, taxes and rounding.