How to Calculate Cost Per Invoice: Swiss AP Team Case Study
Highlights the key finding that a 5-person AP team processing 120 invoices daily costs CHF 25 per invoice, with potential of 85% reduction.
Pigeon AI To calculate the cost per invoice for your Swiss AP team, we’ll use realistic, Switzerland-specific salary and operational cost data (as of 2025), combined with your volume of 120 invoices per working day.
Step-by-Step Calculation
1. Annual Labor Cost (5 AP Employees)
| Item | Amount (CHF) |
|---|---|
| Average gross salary (AP clerk in Switzerland) | 85,000 |
| Social charges (AHV/IV/ALV + pension + accident insurance ~32%) | 85,000 × 0.32 = 27,200 |
| Total cost per employee | 85,000 + 27,200 = 112,200 |
| 5 employees | 5 × 112,200 = 561,000 |
Source: Swiss Federal Statistical Office & industry benchmarks (2024–2025). AP clerks in Zurich/Geneva average CHF 80k–90k gross.
2. Annual Working Days in Switzerland
- ~220 working days/year (after holidays, sick leave, training)
- 5 employees × 220 days = 1,100 employee-days/year
3. Total Invoices Processed Annually
- 120 invoices/day × 220 days = 26,400 invoices/year
4. Labor Cost Per Invoice
Total labor cost per invoice = 561,000 / 26,400 = CHF 21.25 per invoice
5. Add Overhead & Operational Costs
| Cost Type | Annual Cost (CHF) | Per Invoice |
|---|---|---|
| Office space, IT, software licenses, management overhead | ~100,000 | 100,000 ÷ 26,400 = 3.79 |
| Total operational overhead | +3.79 |
Final Cost Per Invoice (Manual Process)
CHF 21.25 (labor)} + CHF 3.79 (overhead) = CHF 25.04 per invoice
Summary
| Metric | Value |
|---|---|
| Invoices per day | 120 |
| AP team size | 5 |
| Total annual cost | CHF 661,000 |
| Cost per invoice | CHF 25.04 |
Your current cost per invoice is approximately CHF 25.00
Automation Benchmark Comparison
| Process | Cost per Invoice |
|---|---|
| Manual (your current) | CHF 25.00 |
| Automated (OCR + workflow) | CHF 3.50 – 6.00 |
| Potential annual savings | CHF 500,000+ |
*With automation, you could reduce headcount or reallocate staff, cutting cost per invoice by 75–85%.*
Quick Win Recommendation:
Pilot automation on 30% of invoices (top 20 vendors). At CHF 5/invoice automated vs. CHF 25 manual, you’d save CHF 20 per invoice → CHF 158,000/year on just 7,920 invoices.
Image credit
Photo by Mary Rodriguez on Unsplash
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