To calculate the total return on a certificate of deposit, you need four pieces of information: the certificate's value, the interest rate, the certificate's term, and the frequency and method of calculating the return.
Steps
A simple example for a fixed-rate, non-compound certificate is: certificate value × annual interest rate × number of years, taking into account the bank's method and payment frequency.
If the product is tiered, variable, or compound, you must calculate each period according to its specific conditions; do not multiply a single rate by the number of years and consider the result final.
The figures, fees and limits in this answer vary by bank and change over time — confirm them with your bank or the official source before acting.