Payback Period Calculator

For even annual cash flows, the payback period is the initial investment divided by the annual cash flow. For example, a 10,000 USD investment returning 2,500 USD a year pays back in 10,000 / 2,500 = 4 years. The result is shown in years and rounded to whole months.

It is the payback period after discounting each year's cash flow by your discount rate, so it reflects the time value of money. Because future cash is worth less today, the discounted payback is always equal to or longer than the simple payback. Set the discount rate to 0 to make the two match.

If the annual cash flow is zero or negative, the investment never pays back, so no finite period exists. With a positive cash flow but a very high discount rate, the discounted cash flows can also sum to less than the initial cost — in that case the discounted payback is shown as never recouped even though the simple payback is finite.

Use it as one input, not the whole decision. Payback period ignores any cash flows after the cost is recovered and, in its simple form, the time value of money. Pair it with measures like net present value or ROI, and treat these figures as planning estimates rather than professional financial advice.