What is cost per invoice and how is it benchmarked?
Cost per invoice is the fully loaded average cost to process one supplier invoice through the accounts payable function, from receipt to payment. It includes labour costs (AP staff time), technology costs (software licences, scanning), exception handling, payment processing, and overhead allocation. Industry benchmarks range from USD 2-5 for best-in-class automated operations to USD 15-30 for highly manual operations.
What costs are included in the cost per invoice calculation?
Cost per invoice components: (1) Labour: AP clerk time for data entry, coding, matching, exception handling, supplier queries; (2) Management: supervisor and controller review time; (3) Technology: AP software licences, OCR tools, scanning hardware (amortized per invoice); (4) Postage and document management: mail receipt, filing, storage; (5) Exception handling: time spent resolving disputes, chasing missing POs, contacting suppliers; (6) Payment processing: bank fees, payment run preparation; (7) Overhead: office space, IT infrastructure allocated to AP. Best-in-class operations reduce costs by eliminating manual steps through e-invoicing and automation.
Frequently Asked Questions
- How does e-invoicing reduce cost per invoice?
- E-invoicing reduces cost per invoice by: (1) Eliminating manual data entry (structured XML data is machine-read directly); (2) Reducing OCR processing costs (no scanning or OCR for structured e-invoices); (3) Increasing STP rate (fewer exceptions requiring manual intervention); (4) Reducing dispute rate (structured data and validation reduce invoice errors); (5) Enabling faster approval cycles (automated matching and routing); (6) Reducing postage and document management costs. Studies show e-invoicing reduces cost per invoice by 60-80 percent compared to paper processes.
- What is the typical cost per invoice for an SME versus a large enterprise?
- SMEs without dedicated AP automation typically incur USD 12-25 per invoice due to manual processing, low volume (no economies of scale), and limited technology investment. Large enterprises with high automation achieve USD 3-8 per invoice. Best-in-class large organizations with full e-invoicing and STP achieve USD 1.5-3 per invoice. The cost differential between manual and automated processing provides the primary ROI justification for AP automation investments.
Related Concepts
- What is invoice cycle time and how is it measured?
- What is straight-through processing in accounts payable?
- What is dynamic discounting and how does it relate to invoice processing?
- What is DSO (Days Sales Outstanding) and how is it measured?
- What is DPO (Days Payable Outstanding) and how does it relate to invoice management?