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Payback Period Calculator — result sheet
Estimate simple and discounted payback from an initial investment and ordered annual cash flows.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Accumulate annual cash flows until the investment is recovered; discounted flow = cash flow / (1 + rate)^year.
Both simple and discounted payback are shown so the time-value-of-money assumption is visible rather than hidden in one result.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Initial investment — minimum 0; maximum 1000000000000000
- Annual cash flows — Enter one cash flow per year, separated by commas or spaces.
- Discount rate — %; minimum 0; maximum 100
Worked example
| Input | Value |
|---|---|
| Initial investment | 100000 |
| Annual cash flows | 30000, 30000, 30000, 30000, 30000 |
| Discount rate | 10 |
The calculator reports the fractional year when simple and discounted cumulative cash flow recovers the investment.
Assumptions and limits
- Cash flows occur at the end of each numbered year and are entered in chronological order.
- Taxes, reinvestment, terminal value, financing, and cash-flow timing within a year are excluded.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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