“Will this automation be worth it?” is the wrong question. The right question is: “What’s the minimum ROI this needs to deliver, and can we prove it before committing?”
Here’s the framework we use at NodiumLabs to answer that question with real numbers.
The Basic Formula
Annual Savings = (Hours Saved × Hourly Cost × 52) - Implementation Cost - Maintenance CostSimple enough. But the devil is in the details.
Step 1: Calculate True Hourly Cost
Your employee’s salary is not their hourly cost. Include:
- Base salary ÷ 2,080 hours
- Benefits (typically 20-30% of salary)
- Overhead (office space, equipment, management time)
- Opportunity cost (what else could they be doing?)
For most professional roles, true hourly cost is 1.5-2x the apparent rate.
Example: A $60K salary employee actually costs ~$90K/year loaded, or ~$43/hour.
Step 2: Measure Current State Accurately
Don’t estimate. Measure.
- Track actual time spent for 2-4 weeks
- Include all related tasks (setup, cleanup, error correction)
- Document error rates and their downstream costs
- Note volume variations (busy seasons, exceptions)
Common mistake: Measuring only the core task, ignoring the overhead that automation also eliminates.
Step 3: Project Realistic Automation Efficiency
Automation rarely eliminates 100% of manual work. Realistic expectations:
| Automation Type | Typical Efficiency Gain |
|---|---|
| Data entry | 80-95% |
| Report generation | 70-90% |
| Email routing/response | 50-80% |
| Document processing | 60-85% |
| Approval workflows | 40-70% |
The remaining percentage is supervision, exception handling, and edge cases.
Step 4: Include All Costs
Implementation costs:
- Development/configuration time
- Testing and validation
- Training
- Integration work
Ongoing costs:
- Maintenance (typically 15-20% of implementation annually)
- Monitoring
- Updates and improvements
A Real Example
Scenario: Invoice processing for a mid-size company
| Metric | Value |
|---|---|
| Invoices/month | 500 |
| Time per invoice | 12 minutes |
| Monthly hours | 100 hours |
| Loaded hourly cost | $45 |
| Monthly cost | $4,500 |
| Annual cost | $54,000 |
With automation (75% efficiency gain):
| Metric | Value |
|---|---|
| Manual hours remaining | 25/month |
| Annual manual cost | $13,500 |
| Implementation cost | $15,000 |
| Annual maintenance | $3,000 |
| Year 1 savings | $22,500 |
| Year 2+ savings | $37,500 |
| 3-year ROI | 6.5x |
The Go/No-Go Decision
We only proceed when:
- Projected ROI exceeds 3x in year one
- Payback period is under 6 months
- We can validate assumptions with a small pilot
If the numbers don’t work, we say so. There’s no shame in deciding not to automate something—that’s valuable information too.
Want us to run these numbers for your processes? Book an ROI assessment or use our ROI calculator to get a quick estimate.