A useful AI business case shows what improved, what it cost and how much of the benefit became a financial result.
- Define an accepted outcome
- Include review and operating costs
- Separate capacity from cash
Define the work you are measuring
Choose a workflow with a clear start and accepted finish. A prepared proposal, completed service request or reviewed record gives you a unit to compare. Record the measurement period, eligible volume, staff effort, elapsed time and quality standard. Use comparable work before and after the change. If the request mix or staffing changes, record that too. A faster result on an easier task does not establish an improvement for the original workload.
Count the effort after the AI responds
Measure preparation, review, corrections, retries and exceptions, including work that happens outside the AI tool. A quick draft can still take substantial effort to finish. Released hours = accepted workflow volume × (baseline staff minutes per outcome − current staff minutes per outcome) ÷ 60. Include unsuccessful attempts in the current effort allocated to completed outcomes. Track elapsed turnaround separately: reducing waiting time can help the customer without releasing the same number of staff hours.
Keep capacity and cash separate
Released hours create capacity for other work. An estimated capacity value can be calculated as released hours × the relevant loaded hourly labour cost. Label it as an estimate and explain how much of that time the team can use productively. Cash savings require an actual reduction in spending. Additional sales should be assessed through attributable contribution margin after related costs. Do not add capacity value to financial benefits when the same hours already produced the recorded savings or margin.
Use the full cost for the same period
Include implementation, integration, licences, model usage, training, maintenance, evaluation and support. Keep review and correction effort visible in the operating comparison, and avoid counting it again if it is already included in another cost line. Distinguish one-time setup from recurring expenses. Net financial benefit = realized cost reductions + attributable incremental contribution margin − incremental project costs. Financial ROI (%) = net financial benefit ÷ incremental project costs × 100. A zero cost denominator makes that percentage undefined. Keep estimated capacity value outside this financial ROI calculation.
Make adoption visible in the estimate
Use the volume that actually went through the workflow when reporting measured results. If you forecast from the total eligible workload, state the expected adoption level and apply it once. Show what happens when uptake, review time or useful volume is lower than expected. Keep forecasts beside measured results with clear labels. A department-wide estimate should not silently assume that every employee will use the tool for every eligible task.
Give the result an owner
Have the operating owner validate completed work and finance review the financial assumptions. Ask where released time went and whether the quality standard held. Note other changes that may explain the result. End the review with a decision: continue, adjust the workflow, expand the scope or stop. A useful measurement record lets the next reviewer understand both the calculation and the work behind it.
Keep three kinds
of value distinct
Use the same reporting period and explain the evidence behind each line. Avoid counting the same benefit twice.
| Value | Evidence to look for | How to report it |
|---|---|---|
| Released capacity | Accepted work requires less total staff effort, including checking and corrections. | Hours released. Any labour-cost valuation is an estimate of capacity value. |
| Cash savings | Actual spending decreases and the reduction can be connected to the change. | Verified cost reductions, with the period and source recorded. |
| Additional margin | Evidence connects additional sales to the change, after the related costs. | Attributable incremental contribution margin, with assumptions stated. |
Further reading
Related guidance from the organizations below.
