Payback Period Calculator — Years to Recover Investment

Estimate simple payback years from initial investment and constant annual cash inflow. Sample: invest 10,000 with 2,500 per year → 4 years. Educational — not investment advice Calculate simple payback years with investment ÷ annual cash flow; example 10,000 / 2,500 → 4 years.

How it works

Enter the upfront investment and a constant annual inflow. Years = investment ÷ annual CF. For discounted payback use NPV-style tools.

Formula

Payback years = I0 / CF_annual. Notes:

Ignores time value of money and uneven cash flows.
Both inputs must be positive.
Not a profitability measure by itself.

Example

Example: I0=10000, CF=2500 → 10000/2500 = 4 years.

When to use it

Homework: simple payback drills.
Rough screen before NPV/IRR.
Contrast with discounted methods.

Frequently asked questions

Sample?

4 years for 10000 / 2500.

Discounted?

Not on this page — simple payback only.

Uneven CF?

Use a spreadsheet or NPV-style schedule.

Advice?

Educational only.

Important notice

Educational payback period only — not financial, tax, or investment advice.

References: Investopedia and standard textbook formulas.

Questions or feedback

Something unclear, broken, or missing? Draft a message below — we read every note about these tools.