The Future Value of an Annuity Formula The future value calculation also has three variables: payment amounts, number of payment periods and interest rate. Formula Breakdown Here’s the formula ...

These regular payments are also considered an annuity in the broadest sense of the word. Here’s how to calculate the future value of an annuity. The formula is: (FV) = A x [ ( (1+i) n -1)/i] Where: ...