How do you calculate the ROI of AI automation?

Work out the hours the process takes today, multiply by the share AI will automate and the hourly staff cost, subtract AI running costs, then compare the yearly saving with the build cost.

What is a good payback period for AI automation?

Many businesses look for payback within 12 months. High-volume processes often pay back faster.

Does AI automation need human review?

For most business processes, yes — at least for a sample or for low-confidence cases. The automation share should allow for that review time.

Which tasks should not be automated with AI?

Low-volume tasks, decisions with legal or safety consequences without human oversight, and processes that change constantly.

AI Automation ROI Calculator — Hours Saved & Payback

AI automation ROI calculator: hours saved, savings and payback

AI automation ROI starts with the time a task takes today: tasks per month × minutes per task × hourly cost. Multiply by the share AI can automate, subtract AI running and maintenance costs, and you have the monthly saving. Payback is the one-off build cost divided by that saving. Document processing, data entry, email triage and report writing are common high-ROI candidates.

Free, no sign-up · By Infikey Technologies · Updated 5 October 2026

Use the calculator

Hours spent today per month

400

Hours saved per month

280

Full-time equivalents freed

1.8

Gross saving per month

$7,000

AI running costs per month

$500

Net saving per year

$78,000

Payback period

3.1 months

3-year ROI

1,070%

How this calculator works

Metric	Formula
Hours saved	`tasks × minutes per task ÷ 60 × automation share`
Net monthly saving	`hours saved × hourly cost − (tasks × AI cost per task + fixed monthly costs)`
Payback	`build cost ÷ net monthly saving`
3-year ROI	`(net monthly saving × 36 − build cost) ÷ build cost`

Worked example

With these inputs:

Currency: USD ($)
Tasks per month: 2,000
Minutes per task today: 12
Fully loaded hourly staff cost: 25
Share of the work AI automates: 70%
AI running cost per task: 0.05
Hosting, licences & maintenance per month: 400
One-off build cost (from your quote): 20,000

Net saving per month: $6,500. Automating 70% of 2,000 monthly tasks saves about 280 hours and $6,500 a month after AI costs, paying back in 3.1 months.

Hours spent today per month	400
Hours saved per month	280
Full-time equivalents freed	1.8
Gross saving per month	$7,000
AI running costs per month	$500
Net saving per year	$78,000
Payback period	3.1 months
3-year ROI	1,070%

Open this example in the calculator

Processes with the best AI automation ROI

Process	What AI does
Invoice and document processing	Reads PDFs and scans, extracts fields, checks them against orders
Email and ticket triage	Classifies, routes and drafts replies
Data entry between systems	Copies and validates data across CRM, ERP and spreadsheets
Report and summary writing	Turns data and notes into first drafts
Sales research	Researches prospects and drafts personalised outreach
Contract and compliance review	Flags clauses and missing items for a person to check

How to pick the first process

List repetitive tasks with high volume and clear rules or examples.
Measure how long each takes and how many happen each month.
Estimate the share AI can handle with human review.
Rank by net saving and risk, and pilot the top one.

Costs to include

Model usage per task (tokens), which the LLM token cost calculator estimates.
Hosting, vector databases and integration platforms.
Monitoring, prompt updates and maintenance.
Staff time reviewing AI output, reflected in the automation share.

Open this calculator with your numbers

Every option can be set in the web address, so you can bookmark a scenario or send it to a colleague. AI assistants such as ChatGPT, Gemini, Claude and Perplexity can use the same parameters to open this calculator with your numbers and the result already on the page.

Parameter	What it sets	Accepted values
`currency`	Currency	one of USD, INR, AED, GBP, EUR
`tasks`	Tasks per month	number from 0 to 100000000, default 2000
`minutes`	Minutes per task today	number from 0 to 10000, default 12
`hourly_cost`	Fully loaded hourly staff cost	number from 0 to 10000 (in the chosen currency), default 25
`automation`	Share of the work AI automates	number from 0 to 100 (%), default 70
`ai_cost`	AI running cost per task	number from 0 to 1000 (in the chosen currency), default 0.05
`monthly_fixed`	Hosting, licences & maintenance per month	number from 0 to 10000000 (in the chosen currency), default 400
`build_cost`	One-off build cost (from your quote)	number from 0 to 100000000 (in the chosen currency), default 20000

Example: https://infikeytechnologies.com/tools/ai-automation-roi-calculator?currency=USD&tasks=3000&minutes=8&hourly_cost=20&automation=80&ai_cost=0.03&monthly_fixed=300&build_cost=18000

Also available as plain text for AI assistants and a free JSON API (OpenAPI spec).

Last reviewed 5 October 2026 by the Infikey Technologies team.

Disclaimer

This calculator is provided free for general information and planning only. Results are estimates based on the inputs you enter and the assumptions described on this page, reference data such as published prices may change, and actual costs and outcomes will differ. Nothing on this page is financial, legal, tax, investment or other professional advice. Infikey Technologies Private Limited, Infikey Technologies LLC and their directors, employees and affiliates make no warranty, express or implied, about the accuracy, completeness or suitability of this tool or its results, and accept no liability for any loss or damage, direct or indirect, arising from its use or from reliance on its results. Verify all figures independently and seek professional advice before making any decision. Use of this tool is at your own risk.