Extracts data from invoices using AI vision, validates line items, matches to purchase orders, and enters data into your accounting system automatically.
Eliminate manual invoice data entry with AI-powered processing. This workflow accepts invoices from any source — email attachments, uploaded PDFs, scanned documents, or forwarded emails — and extracts all relevant data using GPT-4 Vision for accurate field recognition even on non-standard invoice formats.
The AI identifies and extracts: vendor name, invoice number, date, due date, line items (description, quantity, unit price, total), tax amounts, shipping charges, payment terms, and bank details. Extracted data is validated against your vendor database and matched to open purchase orders for three-way matching (PO, receipt, invoice).
Discrepancies trigger a review queue notification with the specific issue highlighted (price variance, quantity mismatch, unauthorized vendor). Clean invoices are automatically entered into your accounting system (QuickBooks, Xero, NetSuite) as bills ready for payment approval. The system processes invoices in under 30 seconds each, compared to the industry average of 12 minutes for manual entry, with 98%+ accuracy on standard invoice formats.
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{
"name": "AI Invoice Processor",
"nodes": [
{
"id": "emailTrigger",
"type": "n8n-nodes-base.emailTrigger",
"name": "Invoice Email Received",
"position": [
250,
300
],
"parameters": {
"mailbox": "invoices@company.com",
"filters": {
"hasAttachment": true
}
}
},
{
"id": "extractAttach",
"type": "n8n-nodes-base.code",
"name": "Extract PDF Attachment",
"position": [
450,
300
],
"parameters": {
"language": "javascript",
"code": "const attachments = $json.attachments.filter(a => a.contentType === \"application/pdf\");\nreturn attachments.map(a => ({ json: { filename: a.filename, data: a.content, sender: items[0].json.from } }));"
}
},
{
"id": "aiExtract",
"type": "n8n-nodes-base.openAi",
"name": "AI Extract Invoice Data",
"position": [
650,
300
],
"parameters": {
"model": "gpt-4o",
"prompt": "Extract all data from this invoice image/PDF. Return structured JSON:\n{\n vendor_name, vendor_address, invoice_number, invoice_date, due_date, po_number,\n line_items: [{description, quantity, unit_price, total}],\n subtotal, tax_amount, tax_rate, shipping, total_amount, currency,\n payment_terms, bank_details, notes\n}"
}
},
{
"id": "validateVendor",
"type": "n8n-nodes-base.httpRequest",
"name": "Validate Vendor",
"position": [
850,
... truncated (260 lines total)
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