Automation ROI Planner
Calculate payback period and ROI for an automation investment from its labor, quality, and throughput benefits, net of new maintenance cost.
Sensitivity to benefit estimate
| Scenario | Net benefit | Payback | Strategy |
|---|---|---|---|
| Benefit -20% | $51,000 | 3.92 years | Go |
| Benefit -10% | $58,000 | 3.45 years | Go |
| Base case | $65,000 | 3.08 years | Go |
| Benefit +10% | $72,000 | 2.78 years | Go |
| Benefit +20% | $79,000 | 2.53 years | Go |
Continue Analysis
Based on your results, these related decisions are available.
Resources
How this works
This engine screens an automation investment on simple payback and return on investment over its useful life. Labor savings, quality savings, and throughput gains (valued at a contribution margin per unit) are combined into a net annual benefit after subtracting any new ongoing maintenance cost the automation itself introduces. Payback is the automation cost divided by that net benefit; ROI compares the total benefit over the asset's life against the upfront cost.
A positive net benefit does not automatically mean the investment is worthwhile: if payback takes longer than the asset's own useful life, the investment never actually pays for itself, and this engine flags that case as "no go" rather than "marginal."
Assumptions
- Annual benefits and maintenance cost are constant across the useful life
- Throughput gains are valued at a constant contribution margin per unit
- No ramp-up period; full benefit is assumed from year one
Limitations
- Does not model financing, taxes, or depreciation
- Does not model a benefit ramp-up curve, common for automation projects with a learning period
- Screens one investment at a time; does not rank competing automation projects against each other
Sources
Payback and ROI calculations follow Blank and Tarquin, Engineering Economy (8th edition). The labor, quality, and throughput benefit framework follows Boothroyd, Dewhurst, and Knight, Product Design for Manufacture and Assembly (3rd edition).
Worked example
A $200,000 automation cell with an 8-year life saves $60,000 a year in labor and $10,000 a year in quality cost, against $5,000 a year in new maintenance. Net annual benefit is $65,000, so payback is about 3.1 years and the ROI over the 8-year life is 160%, landing in the "go" range. If the same cell only saved $30,000 a year in labor with no quality benefit, payback would stretch past 22 years, well beyond any reasonable useful life, and the recommendation would flip to "no go" even though the benefit is still technically positive every year.
Common use cases
- Justifying a robotic cell, cobot, or automated material handling investment
- Screening a scanning, sortation, or warehouse automation system
- Comparing an automation investment against the repair, replace, or expansion alternatives it would replace
- Building the capital case to present to a budget owner
Frequently asked
- What savings categories does this include beyond labor?
- Labor cost, a capacity change if automation increases throughput, and improvement value from quality or reliability gains are all counted, not labor savings alone.
- How is payback different from ROI here?
- Payback is the time to recover the investment; ROI is the return relative to the investment size over a stated horizon. A fast payback and a modest ROI, or the reverse, are both possible outcomes worth seeing separately.
- Does this account for the labor that automation displaces?
- The labor-cost input should reflect the net change, including any redeployment rather than elimination; entering a raw headcount-times-wage figure without that context can overstate savings.
- What if the automation only partially replaces a manual process?
- Enter the capacity change and labor savings that reflect the partial scope only; a partial-automation case should not be priced as if it fully replaced the process.