Payback Period Calculator
Find when annual cash benefits recover an initial investment.
Result
Payback period: 3.25 yearsEstimate
Simple payback ignores the time value of money and every cash flow after recovery. Use NPV to include both.
- Payback in years
- 3.25Estimate
- Zero when the entered horizon does not recover the investment.
- First recovery year
- 4Estimate
- Benefits in entered horizon
- $26,000.00Estimate
- Amount still unrecovered
- $0.00Estimate
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Results are arithmetic estimates based on the assumptions you enter, not accounting, tax, investment or lending advice. Forecasts can be wrong and important decisions should be checked with a qualified adviser. Read the full disclaimer
How to use the Payback Period Calculator
- Enter the investment paid before the project starts.
- Add each expected annual net cash benefit in chronological order.
- Use the result as a recovery-time measure, then check NPV for time value.
When the original cost comes back
Payback accumulates annual cash benefits until their total reaches the initial investment. Whole years before that point are counted in full. If recovery happens partway through the next year, the remaining amount is divided by that year’s benefit.
payback = full years before recovery + unrecovered amount ÷ recovery-year benefitFor a 20,000 investment, benefits of 4,000, 6,000 and 8,000 leave 2,000 unrecovered after year three. An 8,000 fourth-year benefit covers that in one quarter of a year, giving 3.25 years.
A deliberately limited decision measure
Simple payback gives the same weight to money in year one and year ten. It also ignores every benefit after the investment has been recovered. A project with a short payback can therefore create less total value than a slower project.
Use NPV to discount the full timeline. This calculator remains useful when recovery time itself matters, provided the annual benefits are credible and the limitations remain visible.
With your numbers
- Annual benefits are accumulated against $20,000.00 without discounting
- Recovery occurs in year 4, at 3.25 years
- Benefits across the full entered horizon total $26,000.00
Quick reference
Simple payback ignores the time value of money and every cash flow after recovery. Use NPV to include both.
| Example | Payback period |
|---|---|
| Recovery during year four | 3.25 years |
| Exact recovery after two years | 2.00 years |
| Not recovered in three years | Not recovered |
| Recovery in first year | 0.50 years |
| Uneven five-year benefits | 4.32 years |
| Zero first-year benefit | 1.80 years |
Common questions about the Payback Period Calculator
- How is a partial year calculated?
- The unrecovered amount at the start of the recovery year is divided by that year’s benefit. This assumes the benefit arrives evenly through that year.
- Why does payback ignore later benefits?
- That is the definition of simple payback: it stops when the initial cost is recovered. NPV includes the full entered timeline.
- What does not recovered mean?
- The benefits entered for the available years do not add up to the initial investment. The remaining amount is shown separately.