Payback Period Calculator
How long to recover an investment.
Enter your values
Enter the initial investment in $.
Enter the annual cash inflow in $.
Enter the discount rate in %.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Payback period
- 3.33 years
- In months
- 40
- Discounted payback
- 5 years
- Cash recovered in 5 years
- $90,000.00
Quick answer
Payback period is the time until cumulative cash flow turns positive — a quick liquidity screen rather than a profitability measure.
Payback = Investment ÷ Annual cash flow
At a glance
| What it does | How long to recover an investment. |
|---|---|
| Category | Business |
| Inputs needed | Initial investment, Annual cash inflow, Discount rate |
| Main output | Payback period |
| Formula | Payback = Investment ÷ Annual cash flow |
| Cost | Free — no sign-up, no download |
How to use the Payback Period Calculator
- 1Enter the upfront investment.
- 2Enter the annual cash it generates.
- 3Add a discount rate for the time-value version.
Inputs explained
- Initial investment($)
- Enter the initial investment in $.
- Annual cash inflow($)
- Enter the annual cash inflow in $.
- Discount rate(%)
- Enter the discount rate in %.
Worked example
Using the values the calculator loads with:
Inputs
- Initial investment60000 $
- Annual cash inflow18000 $
- Discount rate8 %
Results
- Payback period3.33 years
- In months40
- Discounted payback5 years
- Cash recovered in 5 years$90,000.00
Frequently asked questions
What is a good payback period?
Under 3 years for equipment, under 12 months for marketing spend.
Why use discounted payback?
It accounts for the fact that later cash is worth less today.
What do I need to enter into the Payback Period Calculator?
Just 3 values: initial investment, annual cash inflow, discount rate. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Payback Period Calculator work out the answer?
Payback period is the time until cumulative cash flow turns positive — a quick liquidity screen rather than a profitability measure. It applies the formula Payback = Investment ÷ Annual cash flow and shows the working so you can check each step by hand.
Is the Payback Period Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.