Business calculators
Payback Period Calculator
Find how long an investment takes to pay for itself from its annual cash flow. Your inputs stay in this browser.
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What this calculator measures
Payback period answers a simple question: how long until an investment returns the money put into it? It does not measure profitability or rate of return — only the time to break even in cash terms.
This calculator assumes an equal cash flow every year, which fits investments with a level, predictable return.
Formula
Inputs and variables
- Initial investment
- Enter the money amount used by this formula.
- Annual cash flow
- Assumed equal every year.
How to use the calculator
- Choose a display currency when money fields are present.
- Enter values that cover the same period, scope, and currency.
- Review the result, formula, and worked example before using the estimate in a decision.
- Change one assumption at a time to understand what drives the result.
Worked example
- 1An investment of $50,000 returns $12,500 a year.
- 2$50,000 / $12,500 = 4 years, or 48 months.
How to interpret the result
A shorter payback period means capital is recovered sooner, which reduces exposure to risk, but it says nothing about what happens after payback or about the time value of money.
Common mistakes and limits
- Assuming level cash flows when they are not, using payback period as the only investment criterion, or ignoring what the investment continues to earn after the payback point.
Frequently asked questions
Does payback period account for the time value of money?
No. A discounted payback period would; this is the simple version.
What is a good payback period?
It depends on the industry, the investment's expected life, and your risk tolerance — there is no universal benchmark.
How is this different from IRR or NPV?
Payback period measures time to recover cost. IRR and NPV measure the rate of return and the value created, and both account for when cash arrives.