Cd Interest Calculator
Calculate the maturity value and total interest earned on a Certificate of Deposit (CD) based on initial deposit, interest rate, term length, and compounding frequency.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the CD Interest Calculator
This calculator computes the maturity value of a Certificate of Deposit (CD) using the compound interest formula: A = P(1 + r/n)^(nt).
- Enter Initial Deposit ($) – The principal amount you invest (e.g., 10000). Must be a positive number.
- Enter Annual Interest Rate (%) – The yearly rate (e.g., 5.5 for 5.5%). Use decimals as needed.
- Enter Term Length – The duration of the CD. Input a positive integer (e.g., 12).
- Select Term Unit – Choose Months or Years to match your term length.
- Select Compounding Frequency – How often interest is compounded: Daily, Monthly, Quarterly, Semi-annually, or Annually.
- Click "Calculate" – The results show:
- Maturity Value – Total amount at the end of the term.
- Total Interest Earned – Interest gained (Maturity Value minus Deposit).
All inputs must be positive. If invalid, the field highlights red. Results display in USD, rounded to two decimals.
Previous Results
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Frequently Asked Questions
A CD is a savings product offered by banks that pays a fixed interest rate for a specified term. Funds are locked in until maturity, and early withdrawal may incur penalties.
CD interest is typically calculated using the compound interest formula: A = P(1 + r/n)^(nt), where P is the principal, r is the annual interest rate, n is the number of compounding periods per year, and t is the time in years.
Compounding frequency refers to how often interest is added to the principal. More frequent compounding (e.g., daily) results in higher returns compared to less frequent compounding (e.g., annually).
