Simple & Discounted Payback Period Calculator
The simple payback period is the initial investment divided by the annual cash inflow, so a $30,000 investment returning $10,000 a year pays back in 3 years. Enter your figures to see the exact recovery time.
Payback Period
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How the Payback Period Works
Payback period answers how long until an investment returns its original cost. The simple method divides investment by average annual cash inflow, which is fast but ignores the time value of money and everything that happens after payback. The discounted method fixes half of that problem by discounting each year inflow at your required rate, then counting years until cumulative discounted cash flow turns positive. This calculator returns the simple payback figure; use the discounted method when the term is long or rates are high, because a 5-year payback at 10% is materially slower in present-value terms. Payback is a screening tool, not a full verdict. A short payback reduces risk and frees capital sooner, but a project with a slightly longer payback could still win on total NPV. Compare both before deciding. Use payback as a first filter to reject slow, risky projects, then compare the survivors on NPV and strategic fit before committing capital.
Formula Used
Simple Payback = Initial Investment / Annual Cash Inflow; Discounted Payback uses the present value of each year
Invest $30,000 and receive $10,000 per year. Simple payback = $30,000 / $10,000 = 3 years. At a 10% discount rate, the discounted payback stretches to about 3.8 years.
When to Use This Calculator
- Screening projects before a full NPV analysis.
- Judging how quickly equipment pays for itself.
- Comparing financing options with different terms.
Common Mistakes
- Ignoring the time value of money: Simple payback treats year-five cash the same as year-one cash, which overstates speed on long projects.
- Stopping at payback: Cash flows after the payback date can make a slower project more valuable overall; always check NPV too.
- Using average inflow when cash flows vary: For uneven flows, add each year until the running total covers the investment.
Frequently Asked Questions
How does discounted payback period account for the time value of money?
It discounts each year cash inflow at your required rate before accumulating it, so later dollars count for less. The payback point is where cumulative discounted cash flow turns positive. It is always equal to or longer than simple payback.
What is considered an ideal payback period for business investments?
Shorter is safer. Many small businesses target 2–3 years, while larger capital projects accept 5–7 years. The right threshold depends on your cost of capital and how much risk you can absorb if projections slip.
What is the difference between simple and discounted payback?
Simple payback divides investment by annual inflow and ignores timing. Discounted payback applies your discount rate to each year first. Use simple for a rough shortcut and discounted when rates are high or the horizon is long.
What is the simple payback period formula?
Divide the initial investment by the average annual cash inflow. A 30,000 investment returning 10,000 a year pays back in three years. It is quick but ignores the time value of money and any cash flow after the payback date.
What is the difference between simple and discounted payback?
Simple payback uses raw cash flows and ignores timing. Discounted payback applies your required return to each year before accumulating it, so the break-even point arrives later. Use discounted payback when rates are high or the horizon is long.
How This Page Is Reviewed
Written by the Recapflow Editorial Team and last reviewed . Every formula and worked example is cross-checked against the live calculator engine and a hand-worked example. This page is educational and does not replace professional financial, tax, or legal advice.