How the savings and ROI are calculated
Automation saves the time people spend on the parts of a process that a tool can do. The calculator turns that time into money and compares it with what the automation costs:
Hours saved per month = runs per month × minutes per run ÷ 60
× % of the process that can be automated
Gross annual savings = hours saved per month × 12 × cost per hour
Net annual savings = gross annual savings − tool cost per month × 12
First-year cost = implementation cost + tool cost per month × 12
First-year ROI = (gross annual savings − first-year cost) ÷ first-year cost
Payback period = implementation cost ÷ net monthly savingsIf the tool costs more each month than the time it saves, the investment never pays back. If there are no costs at all, the ROI is not defined and the calculator says so.
Worked example
An accounts payable team processes 800 invoices a month. Each one takes 6 minutes of manual work (download, data entry, matching with the purchase order). The team costs $35.00 per hour, and a tool can handle about 80% of the work; the rest are exceptions that still need a person. The tool costs $300.00 per month, and setting it up costs $5,000.
- Hours saved per month: 800 × 6 ÷ 60 × 0.80 = 64 hours (768 hours a year)
- Gross savings: 64 × $35.00 = $2,240 a month, or $26,880 a year
- Tool cost: $300.00 × 12 = $3,600 a year
- Net annual savings: $23,280
- First-year cost: $5,000 + $3,600 = $8,600
- First-year ROI: 213%
- Payback period: 2.6 months ($5,000 ÷ $1,940 of net savings per month)
Amounts are rounded exactly as the calculator shows them; each step uses the unrounded values.
How the share you automate changes the result
With the same invoice volume and costs, this is how the result changes depending on how much of the process the tool can actually handle:
| Share automated | Net annual savings | First-year ROI | Payback period |
|---|---|---|---|
| 25% | $4,800 | -2% | 12.5 months |
| 50% | $13,200 | 95% | 4.5 months |
| 75% | $21,600 | 193% | 2.8 months |
| 100% | $30,000 | 291% | 2 months |
At 25%, the process still saves money every month, but not enough to cover the implementation within the first year. Being realistic about the automatable share matters more than any other input.
Tips to get a better return
- Start with high-volume, rule-based processes. Data entry, approvals, reconciliations and notifications usually pay back fastest.
- Measure the current time first. Time a few real runs instead of guessing; small errors in minutes per run multiply quickly.
- Fix the process before automating it. Automating unnecessary steps only makes them faster, not useful.
- Run a pilot. Automate one team or one document type first and confirm the savings before scaling up.
- Plan for exceptions and maintenance. Assign an owner, monitor failures and budget time for changes in the systems you connect.
- Decide what to do with the hours saved. The savings are real only if that time goes to higher-value work.
What this estimate does not include
Benefits that are harder to price are not included: fewer errors, faster response times, better compliance and happier teams. Neither are some costs: ongoing maintenance, handling of exceptions and training, unless you add them to the tool’s monthly cost. Use the result to compare options and set priorities, not as a guaranteed figure.
Frequently asked questions
How is the ROI of automation calculated?
First-year ROI is the gross annual savings minus the first-year cost, divided by the first-year cost. Gross savings are the hours saved per year multiplied by the employee's hourly cost; the first-year cost is the one-time implementation plus twelve months of the tool.
Why does the ROI only cover the first year?
The first year is when the implementation cost is paid, so it is the most conservative view. From the second year on, you only pay for the tool, so the return is usually much higher. The net annual savings figure shows that recurring, year-two view.
What if I don't know what share of the process can be automated?
Start by listing the steps of the process and marking the ones that follow fixed rules, such as copying data between systems, validating fields or sending notifications. Steps that need judgment or handle exceptions usually stay manual. If in doubt, use a conservative value such as 50% and compare scenarios.
What costs are often forgotten?
Maintenance when systems or rules change, the time spent handling cases the automation cannot solve, training, and the extra cost of higher usage tiers of the tool. Add them to the monthly tool cost if you can estimate them.
Is the data I enter stored anywhere?
No. All calculations run in your browser. Values only leave your device if you use the share button, which puts them in the link you copy.