How do you automate invoice processing with Make?
Quick Answer: Invoice processing is automated in Make by triggering on new emails or uploaded PDFs, using OCR modules (e.g., Mindee, Docparser, Google Vision) to extract line items, routing data to accounting systems (QuickBooks, Xero, NetSuite) for record creation, and posting approval requests to Slack or email. A typical scenario runs 10-15 modules and processes invoices in 30-60 seconds.
Automating Invoice Processing with Make
Invoice processing automation reduces manual data entry, accelerates payment cycles, and improves audit trails. Make provides the orchestration layer; OCR services extract data; accounting tools receive structured output.
Workflow Overview
- Trigger: New email in a dedicated inbox ([email protected]) or new file in a Google Drive folder
- Download attachment: Gmail module downloads PDF
- OCR extraction: Mindee, Docparser, or Google Document AI extracts vendor, amount, line items, dates
- Validation: Router checks extracted fields for completeness
- Vendor lookup: Airtable or accounting system lookup confirms vendor exists
- Record creation: Create bill in QuickBooks or purchase order in NetSuite
- Approval request: Slack message or email to approver with extracted details
- Archive: Move original PDF to archived folder
OCR Module Options
Mindee Invoice API
- Purpose-built for invoices
- 50+ fields extracted
- $0.10-$0.25 per invoice
Docparser
- Template-based (rules per vendor)
- Strong on repeat vendors
- $39/month for 100 documents
Google Document AI
- General-purpose OCR with invoice processor
- Tight Google Cloud integration
- $0.10 per page (Invoice Parser)
Make Scenario Structure
Gmail (Watch Emails) → Filter (Has Attachment)
→ Gmail (Download Attachment)
→ Mindee (Extract Invoice Data)
→ Router
→ Path 1 (Valid): Airtable Find Vendor → QuickBooks Create Bill → Slack Message
→ Path 2 (Invalid): Slack Error Alert → Gmail Send Correction Request
Validation Rules
- Required fields: Vendor name, invoice number, total amount, due date
- Range check: Total amount within expected range for vendor
- Duplicate check: Search existing invoices by invoice number
- Tax validation: Tax matches expected rate
Approval Workflow
- Under $500: Auto-approve if vendor is known
- $500-$5,000: Approver gets Slack message with approve/reject buttons
- Over $5,000: Email to finance manager with full invoice attachment
Error Handling
Make supports error handlers on modules:
- OCR fails: Route to manual review queue in Airtable
- Vendor not found: Create new vendor record, flag for review
- Accounting system down: Retry 3 times, then alert on failure
Typical Results
- Processing time: 30-60 seconds per invoice end-to-end
- Cost: $0.15-$0.40 per invoice (Make operations + OCR)
- Accuracy: 95%+ for standard invoices with clear vendor templates
Scaling Considerations
- Make Core plan: 10,000 operations/month — sufficient for ~500 invoices/month
- Pro plan: 10,000 operations with prioritized execution
- For 1,000+ invoices/month, consider a dedicated AP automation tool (Bill.com, Stampli)
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