Use this app to determine a savings plan in one of two ways: by computing how much will be accumulated by saving a particular amount each month over a given time horizon, or by computing how much must be saved each month over a given time horizon to accumulate to a particular future amount.

Monthly amounts invested will be compounded into the future (or discounted to the present) at one-twelfth the annual interest rate.

Make small changes in the amounts or interest rates and see how much they influence the results. The magic of compound interest over the long haul really makes a difference.