For example, if interest on the CD is compounded monthly, divide the base percentage rate by 12 to find the periodic interest rate. Multiply the previous balance of the CD by the periodic interest rate and add the result to the previous balance to find the new balance of the CD.What is the average interest rate on a CD?
What is the typical interest rate on a CD? According to Bankrate’s most recent national survey of banks and thrifts, the average rate for a one-year CD is 0.15 percent. The average rate for a five-year CD is 0.28 percent.