Payback Period Calculator
Calculate Payback Period step by step: Payback = years before full recovery + unrecovered amount ÷ cash flow in the recovery year.
In short
Formula: Payback = years before full recovery + unrecovered amount ÷ cash flow in the recovery year.
What this calculator does
Calculate Payback Period step by step: Payback = years before full recovery + unrecovered amount ÷ cash flow in the recovery year. Worked example, questions and limitations included.
Use it to turn Currency (symbol only, never converted), Initial investment, Cash flow, year 1, Cash flow, year 2 (blank = none), and the other shown inputs into a checked result you can compare, copy, or rerun with different assumptions.
The page shows the formula, a numeric worked example, and the assumptions that affect this corporate finance calculation.
Inputs and what they mean
- Currency (symbol only, never converted)
- — choice value.
- Initial investment
- — number value.
- Cash flow, year 1
- — number value.
- Cash flow, year 2 (blank = none)
- — number value.
- Cash flow, year 3 (blank = none)
- — number value.
- Cash flow, year 4 (blank = none)
- — number value.
- Cash flow, year 5 (blank = none)
- — number value.
- Cash flow, year 6 (blank = none)
- — number value.
How to use it
- Enter each value in the unit shown next to the box (use the unit converter first if your numbers are in other units).
- Check the breakdown to see every intermediate step.
- Read the limitations before relying on the result.
Formula
Simple payback as defined in OpenStax Principles of Finance.
Assumes cash arrives evenly within the recovery year.
Ignores the time value of money and flows after payback — see discounted payback.
Payback = years before full recovery + unrecovered amount ÷ cash flow in the recovery year.
Inputs used: Currency (symbol only, never converted), Initial investment, Cash flow, year 1, Cash flow, year 2 (blank = none), Cash flow, year 3 (blank = none), Cash flow, year 4 (blank = none), Cash flow, year 5 (blank = none), Cash flow, year 6 (blank = none).
Worked example
A three-year project
- After 2 years: $8,000 recovered, $2,000 left.
- 2 + 2,000 ÷ 5,000 = 2.4 years.
Reading the result
The headline figure is the main answer. Any breakdown underneath shows the parts that make it up, so you can check the working and see what changes when you adjust an input.
Limitations and assumptions
- Ignores time value of money.
- Ignores cash flows after payback.
- Results are educational estimates built only from the figures you enter. They are not personalised investment, tax, legal or accounting advice. Rates, growth and discount assumptions are always yours to choose.
- The result depends on the values you enter for this payback period calculator; it does not supply missing rates, rules, prices, dates, or assumptions for you.
Common questions
Is a shorter payback always better?
Not necessarily — payback ignores everything after recovery. Check the formula, example, and limitations on this page before using the result for a real corporate finance decision.
Even cash flows?
Enter the same figure in each year; payback equals investment ÷ annual flow. Check the formula, example, and limitations on this page before using the result for a real corporate finance decision.
Is this investment advice?
No. It is a calculation of the figures you enter, not a recommendation to invest or not.
How do I use the Payback Period Calculator?
Enter the required values for Currency (symbol only, never converted), Initial investment, Cash flow, year 1, Cash flow, year 2 (blank = none), Cash flow, year 3 (blank = none), and the other fields shown. The calculator applies the formula on this page and shows the main result with any supporting breakdown so you can check the arithmetic.
What formula does the Payback Period Calculator use?
Payback = years before full recovery + unrecovered amount ÷ cash flow in the recovery year. The visible formula section above lists the calculation path and the edge cases the page handles, so the result can be checked without relying on the form alone.
Can the Payback Period Calculator be used for exact decisions?
Use it as a calculation aid, not as a substitute for checking the underlying rule, contract, policy, or professional advice that applies to your situation. When a result depends on local rules, personal details, prices, or dates, enter those values yourself and confirm them before acting.
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