How do you calculate Capex ROI payback?

Subtract annual support cost from annual savings to get net savings, then divide the investment by that figure. With a $25,000 investment, $18,000 savings and $2,500 support, net savings are $15,500 and payback is $25,000 / $15,500 = 1.61 years.

What is a good payback period for manufacturing capex?

Most plants want machine and automation capex to pay back inside 2-3 years; energy and safety projects are often allowed 3-5 years. The 1.61-year payback in the example would clear almost any internal hurdle.

Why subtract support cost instead of using gross savings?

A machine that saves $18,000 but costs $2,500/yr in maintenance, spares, and software licensing only nets $15,500. Ignoring that overstates ROI and makes high-upkeep equipment look better than it is.

What is the five-year net value in this calculator?

It is net annual savings times five, minus the original investment: $15,500 x 5 - $25,000 = $52,500. It shows the cumulative cash the asset returns over a typical equipment evaluation window.

Payback period vs ROI percentage, which should I use?

Payback (years) is fastest for screening and is what most shop-floor capex forms ask for. A full ROI percentage or IRR matters when projects compete on multi-year cash flows or when discounting is required.

Does a 1.6-year payback mean the project is approved?

It clears the financial gate, but approval also weighs available capital, downtime to install, training, and strategic fit. Payback ranks projects; it doesn't make the final call alone.

Manufacturing Project Portfolio & Capex calculator

Capex ROI Calculator

Capex ROI tells a plant or operations leader how fast a capital purchase, a new CNC, a robotic cell, a vision-inspection rig, pays for itself once you net out the recurring cost of keeping it running. It is the number controllers and CFOs anchor on when ranking competing equipment requests against a fixed capital budget. By subtracting annual support cost from gross savings before dividing into the investment, it avoids the classic trap of overstating returns on a machine that is cheap to buy but expensive to own. Engineers and continuous-improvement teams use it to justify automation, energy retrofits, and tooling upgrades in language finance will sign off on.

What this calculator does

Estimate capex roi for manufacturing project portfolio and capex using production-ready inputs so teams can screen a capital project before a detailed business case.
Use it when capex roi in manufacturing project portfolio and capex is being compared against another manufacturing project portfolio and capex project for the same budget.
It computes the simple payback period in years by dividing the capital investment by net annual savings (gross savings minus annual support cost).

Formula used

Net annual capex roi savings = annual capex roi savings - annual capex roi support cost
Capex roi payback period = capex roi investment ÷ net annual savings
Five-year ROI = five-year net value ÷ investment × 100

Inputs explained

Equipment / capex investment:
Annual savings from the capex:
Annual maintenance & support cost:

How to use the result

Use it early in a capex request to screen equipment and automation projects before building a full discounted-cash-flow model.
Simple payback ignores the time value of money, salvage value, ramp-up time, and savings that grow or decay over the asset's life, so it favors short-horizon projects.

Common questions

How do you calculate Capex ROI payback? Subtract annual support cost from annual savings to get net savings, then divide the investment by that figure. With a $25,000 investment, $18,000 savings and $2,500 support, net savings are $15,500 and payback is $25,000 / $15,500 = 1.61 years.
What is a good payback period for manufacturing capex? Most plants want machine and automation capex to pay back inside 2-3 years; energy and safety projects are often allowed 3-5 years. The 1.61-year payback in the example would clear almost any internal hurdle.
Why subtract support cost instead of using gross savings? A machine that saves $18,000 but costs $2,500/yr in maintenance, spares, and software licensing only nets $15,500. Ignoring that overstates ROI and makes high-upkeep equipment look better than it is.
What is the five-year net value in this calculator? It is net annual savings times five, minus the original investment: $15,500 x 5 - $25,000 = $52,500. It shows the cumulative cash the asset returns over a typical equipment evaluation window.
Payback period vs ROI percentage, which should I use? Payback (years) is fastest for screening and is what most shop-floor capex forms ask for. A full ROI percentage or IRR matters when projects compete on multi-year cash flows or when discounting is required.

Last reviewed 2026-08-12.