Payback Period Calculator
Calculate how long it takes to recover an investment from its cash flows.
Assumptions used in this calculation
- Constant, undiscounted annual cash flow: Assumes the same cash flow recurs every year and does not discount future cash flows to present value, unlike NPV or IRR.
About this calculator
Before committing capital to equipment, a project, or a piece of machinery, a natural risk check is how long it takes before that investment actually pays for itself in cash generated, since a longer payback period ties up capital longer and exposes it to more uncertainty. This calculator takes the initial investment amount and an expected constant annual cash flow, then divides one by the other to find the payback period in years — the point at which cumulative cash inflows equal the original outlay. It's a much faster gut-check than building a full cash-flow schedule, and it's widely used alongside more complex measures like NPV or IRR as a simple risk filter: two investments with similar returns but very different payback periods carry meaningfully different risk profiles, since the one with the shorter payback returns your capital sooner and is less exposed to long-run uncertainty.
Worked example
₹1,00,000 investment, ₹25,000/year cash flow
Result: Payback period = 4 years
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