Payback period · constant cash flow

Payback period · constant cash flow: use initial investment, net inflow per period. Review the formula, worked example and calculation steps.

Inputs

Use the units shown

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RESULT
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Formula & explanation
Payback periods = initial investment / net inflow per period

Variables & units

Initial investment
currency · minimum 0, maximum 1000000000000
Net inflow per period
currency · minimum 0.01, maximum 1000000000000

Worked example

10,000 initial cost and 2,500 net inflow each year gives 4 years.

Assumptions

Undiscounted constant cash flow with fractional-period interpolation. Excludes cash flows after payback.

Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.

Practice with an example

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