Future Value Formula C 0 = Cash flow at initial point (Present value). r = Rate of return. n = number of periods. Future Value. The future value calculator can be used to determine future value, or FV, in financing. FV is simply what money is expected to be worth in the future. Typically, cash in a savings account or a hold in a bond purchase earns compound interest and so has a different value in the future. Future Value (FV) is a formula used in finance to calculate the value of a cash flow at a later date than originally received. This idea that an amount today is worth a different amount than at a future time is based on the time value of money.