"What's the ROI?" It's the first question every CFO asks about AI-powered workflows. And most companies get it wrong–not because math is hard, but because they use the wrong inputs. This guide shows you how to calculate the ROI of intelligent systems, including the costs most companies miss.
The ROI Formula
At its simplest, the ROI of process optimisation is:
ROI = (Current Costs - Automation Costs) / Automation Costs
Simple formula, but the devil is in measuring the inputs correctly
The problem isn't the formula–it's that companies underestimate current costs and underestimate implementation costs. Working with business process automation services can help you get accurate cost projections. Let's fix both.
Step 1: Calculate True Current Costs
Most companies look at salary and call it a day. Here is what to include in the loaded seat cost:
Direct Labor Costs
| Item | Calculation | Note |
|---|---|---|
| Base salary of automated roles | + employer costs | Use payroll and benefits records |
| Number of FTEs affected | × FTE count | Full or partial role? |
| Hours spent on automatable tasks | × hourly rate | For partial automation |
Indirect Labor Costs
| Item | Calculation | Note |
|---|---|---|
| Management time supervising | × manager rate | Use observed time |
| Training and onboarding | ÷ tenure | Amortize over expected stay |
| Recruiting and hiring | × turnover rate | Higher turnover = higher cost |
Error and Quality Costs
| Item | Calculation | Note |
|---|---|---|
| Error rate × cost per error | × frequency | Include downstream impact |
| Rework and correction time | × hourly rate | Use observed time |
| Customer impact of errors | × churn cost | If customer-facing |
Opportunity Costs
| Item | Calculation | Note |
|---|---|---|
| Delayed work due to capacity | × value | What isn't getting done? |
| Slower response times | × customer value | Speed matters for revenue |
| Scale limitations | × growth rate | Can't grow if bottlenecked |
Use Actual Inputs
Add benefits, employer costs, software, management time, recruiting, and turnover using your own records. See our full breakdown.
Step 2: Calculate Automation Costs
Automation isn't free. Here's what to budget:
| Phase | Description | Typical Range | Note |
|---|---|---|---|
| Implementation | Initial build and deployment | Fixed-price setup | Scoped on a 20-minute call |
| Integration | Connecting to existing systems | Scope dependent | Based on the systems involved |
| Training/Change | Organizational preparation | Scope dependent | Based on rollout needs |
| Monthly Operations | Ongoing automation costs | Monthly retainer | Scoped to the deployed work |
| Maintenance | Updates, fixes, improvements | Defined in scope | Included where specified |
Key point: Compare apples to apples. If you're comparing against employee annual cost, include automation Year 1 total (implementation + 12 months operating). Year 2+ only has operating costs.
Step 3: Run the Numbers
Use your own loaded seat costs and the scoped deployment quote in the formula above. Leverwork prices each deployment as a fixed-price setup plus a monthly retainer, scoped on a 20-minute call. Your 20-minute assessment estimates the figures for your roles.
Common ROI Calculation Mistakes
Using salary instead of true cost
Salary alone omits benefits, employer costs, tools, management, recruiting, and turnover. Use the loaded seat cost from your own records.
Ignoring quality improvements
Measure the current error rate, correction time, and downstream impact, then use the same definitions after deployment.
Forgetting ongoing costs
Comparing implementation cost to annual salary is wrong. Include operating costs for an apples-to-apples comparison.
Only counting Year 1
Use the same time period for current operations and automation costs, and keep implementation costs visible.
When ROI Isn't the Only Factor
Sometimes process optimisation makes sense even with modest ROI:
- Scalability: Can't hire fast enough? AI-powered workflows remove bottlenecks.
- Quality requirements: Define the required accuracy, review path, and evidence standard.
- Speed requirements: Need instant response? That's AI agent territory.
- Risk reduction: Compliance, security, or operational risks may justify streamlined operations even at cost parity.
ROI is the primary metric, but not the only one. Consider the strategic value alongside the financial return.
The Key Insight
Most AI workflow ROI calculations are wrong because they undercount current costs. Use true employee cost (not salary), include quality/error costs, and factor in opportunity costs. The result is only useful when every input uses the same time period and scope.
The Bottom Line
AI process optimisation ROI is measurable when you use true costs, include all factors, and compare the same scope over the same time period.
Want estimated figures for your roles? Our seat-cost calculator uses realistic assumptions, or book a free 20-minute assessment for a detailed analysis.