Payback Period Calculator

Calculate how many years it takes an investment's cash flows to recover the initial cost.

⏱ Updated: 17 Sep 2026

Calculator

Free payback period calculator: find how many years it takes an investment's cash flows to recover the initial cost.

Payback Period
years
The cash flows entered never recover the initial investment.

Enter an initial investment and a cash flow for each following period to calculate the payback period.

How to Use the Payback Period Calculator

Set the initial investment, then add a cash flow for each year with Add Year — the payback point is found the moment cumulative cash flow crosses the investment, including the fractional year in between.

Payback period asks the simplest possible investment question: how long until the cash coming back equals the cash that went out? No discounting, no time-value adjustment — just running cash flows against the initial cost until they cross.

Enter the upfront investment and the cash flow expected in each following period. This calculator adds them up period by period and finds the exact point — including a fractional year — where the cumulative total first reaches the original investment. If the cash flows entered never add up to the investment, it says so rather than guessing at a number.

Payback period is popular for its simplicity, but it ignores everything that happens after the payback point and ignores the time value of money entirely — two flows with an identical payback period can have very different total returns. IRR and NPV account for what this metric deliberately leaves out.