This calculator will show you how much interest you will earn over a given period of time, at any given interest rate, based on an initial investment plus a fixed monthly addition. The calculator compounds monthly and assumes deposits are made at the beginning of each month.

To use this calculator:

1. Fill in the Initial Investment, the Monthly Addition, Interest Rate, and Number of Years.
2. Click the Compute button.
3. The calculator will display the Future Value of the savings, and the amount of Interest Earned.