How to Calculate the Real Cost and ROI of AI for a Small Business

The real cost of AI includes software, implementation, integrations, training, review time, maintenance, security and process redesign. The real return includes time saved, errors reduced, faster response and increased capacity.
Start with the Current Process
Record task frequency, employee time, manager involvement, error rate, rework, customer delay and current software cost.
Count Every Cost
Include subscriptions, usage charges, connectors, data storage, setup, source cleanup, workflow construction, testing, documentation and training.
The article on preparing content for AI retrieval explains why information cleanup is often a significant implementation cost.
Measure Human Review
Include the time required to prepare input, check output, correct facts, obtain approval and move the result into the final system.
Add Ongoing Maintenance
Count source updates, failed-answer review, permission corrections, retesting, access management, policy revision and vendor review. NIST treats AI governance as an ongoing cycle. Read the NIST framework.
Calculate Benefit
Annual labor capacity equals time saved per task multiplied by tasks per year and loaded hourly labor cost. Also measure error reduction, faster response, overtime avoided and manager time recovered.
Calculate ROI
Net annual benefit equals annual financial benefit minus annual operating cost. ROI equals net benefit divided by total investment, multiplied by 100.
Use Conservative Assumptions
Create conservative, expected and optimistic scenarios. Do not count the same benefit twice.
The guide to choosing the first AI process helps identify projects that can be measured credibly.