Payback Period Calculator

Calculate how long it takes for an investment to recover its initial cost using equal yearly cash inflows or variable annual cash flows.

How to Use

  1. Enter the initial investment amount.
  2. Choose either equal annual cash inflow mode or variable cash flow mode.
  3. Fill in the expected cash inflows.
  4. Review the payback period, cumulative recovery, and Show Work section.
Investment Recovery View

Payback Snapshot

Track how quickly incoming cash recovers the original outlay.

Payback
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Recovered
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Remaining
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Status
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Recovery progress 0%
Formula
Payback = Initial Investment ÷ Annual Cash Inflow
Fractional Year
Used when recovery happens partway through a year.
Inputs & Settings

Use simple payback assumptions. This tool does not discount future cash flows.

Total upfront cost to recover.
Used only for display formatting.

Equal Annual Cash Inflow

Fast method for constant yearly returns
Expected yearly net cash inflow or savings.
Choose how to display the payback period.
Show Work (step-by-step)
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Show Work uses the selected mode and displays the recovery sequence clearly for verification.

Payback Period Formula

Quick answer: The simple payback period tells you how long it takes to recover the initial cost of an investment from its cash inflows.

  • Equal annual inflows: Payback Period = Initial Investment ÷ Annual Cash Inflow
  • Variable cash flows: Add each year’s inflow until cumulative cash flow reaches the initial investment.
  • Fractional year: Unrecovered Amount at Start of Final Year ÷ Cash Inflow During Final Year

This is a simple payback tool. It does not account for discount rate, inflation, or time value of money.

FAQ

What is a good payback period?

That depends on the project, risk, and your target return. Shorter payback periods are generally preferred because capital is recovered faster.

Does payback period include profit after recovery?

No. It only measures how long it takes to recover the initial investment. Cash flow after payback is not part of the payback period itself.

Does this account for interest or discount rate?

No. This tool calculates simple payback only. For discounted analysis, use NPV or discounted payback methods.

When should I use variable cash flows?

Use variable mode when yearly returns are not consistent, such as projects with ramp-up periods, maintenance changes, or seasonal income patterns.

Tool Info

Last updated:

Updates may include UI refinements, edge-case handling, and improved variable cash flow workflow support.