Skip to content
SnapFi

Single Sum (Lump Sum)

2 formulas

Single sum formulas calculate the future or present value of a one-time lump sum investment. These are the building blocks of time value of money — understanding how a single deposit grows with compound interest over time, or how to discount a future amount back to today's dollars.

FV of Lump Sum

Calculates the future value of a single present amount invested at a fixed annual interest rate.

FV=PV×(1+k)nFV = PV \times (1 + k)^n

Showing annual compounding

3 compounding options

PV of Lump Sum

Calculates the present value of a future amount discounted at an annual rate.

PV=FV×(1+k)−nPV = FV \times (1 + k)^{-n}

Showing annual compounding

3 compounding options