From Inbox to Ledger. Automatically.
AI reads, extracts, matches, and posts invoices to your accounting platform — without manual data entry.
End-to-End Invoice Automation
Step 1: Capture
Invoices arrive through multiple channels — email attachments, supplier portals, scanned post, or direct uploads. The automation monitors all configured channels, identifies messages containing invoices, and pulls attachments into the processing pipeline. No forwarding, no downloading, no manual intake.
Step 2: Data Extraction
The AI reads each invoice and extracts structured data: supplier name, invoice number, dates, line items, amounts, VAT treatment, and bank details. It works across different formats — from well-formatted PDFs to scanned receipts — understanding invoice structure contextually, not by looking for data in fixed positions. Accuracy on recurring suppliers: 95–98%.
Step 3: Matching and Coding
Extracted data is matched against your existing records. Suppliers are matched to your supplier list (or flagged as new). Line items are coded to nominal accounts based on historical patterns. VAT treatment is applied based on configured rules. For PO-based businesses, invoices are matched against outstanding purchase orders with discrepancies flagged for investigation.
Step 4: Validation
Business rules check every invoice before it enters your accounting system — approved supplier, expected amount ranges, correct VAT treatment, duplicate detection, PO matching, and reasonable payment dates. Invoices that pass are queued for approval. Those that fail are flagged with a specific explanation.
Step 5: Approval and Posting
Validated invoices are presented for approval — individually or in batches. The approver sees extracted data alongside the original invoice image, reviews in seconds, and approves. Approved invoices post to Xero, QuickBooks, or your ERP automatically. Configurable approval hierarchies route to the right approver based on your rules.
Manual vs Automated Invoice Processing
| Metric | Manual Process | AI Automated |
|---|---|---|
| Time per invoice | 3–5 minutes | Under 10 seconds (+ approval) |
| 500 invoices per month | 25–42 hours | 2–3 hours (approval batches) |
| Data entry errors | 2–5% error rate | Under 1% after validation |
| Duplicate detection | Relies on memory/spreadsheets | Automatic, 100% coverage |
| Processing delay | Same day at best, often 2–3 days | Real-time as invoices arrive |
| PO matching | Manual cross-reference | Automatic with variance flagging |
Accounting Platforms We Connect
Xero
Bill creation, supplier matching, nominal coding, bank reconciliation prep
QuickBooks Online
Bill entry, vendor matching, category coding, approval workflows
Sage
Invoice posting, supplier management, nominal ledger integration
NetSuite
Purchase invoice processing, PO matching, approval routing
Microsoft Dynamics
AP automation, vendor management, three-way matching
Email (Outlook, Gmail)
Invoice capture from shared mailboxes and forwarded emails
Dext / Receipt Bank
Complementary integration for receipt-level processing
ERP Systems
Custom integrations for industry-specific ERPs via API
If your accounting platform isn’t listed here, it almost certainly has an API we can connect to. The AI Audit maps your specific financial systems and identifies the most effective integration approach.
What Automated Invoice Processing Won’t Solve
Supplier disputes
The automation captures and processes invoices accurately. If you disagree with a charge, negotiating with the supplier is still a human conversation. The automation can flag the discrepancy; it can’t resolve it.
Complex multi-entity accounting
If an invoice needs splitting across multiple entities, cost centres, or projects based on judgement rather than rules, that allocation decision needs a human. The automation can apply rule-based splits automatically but can’t make judgement calls about allocation.
Handwritten or severely damaged invoices
Badly scanned, handwritten, or physically damaged invoices may not extract reliably. These are flagged for manual processing. In practice, they typically represent less than 5% of invoice volume for most businesses.
First-time supplier setup
When a completely new supplier sends their first invoice, the automation extracts the data but can’t automatically match it to a supplier that doesn’t exist in your system yet. New supplier setup still requires a human step — but it’s a one-time task per supplier.
Typical Costs and ROI
| Monthly Invoice Volume | Typical Cost | Time Saving | Payback Period |
|---|---|---|---|
| Under 200 invoices/month | £2,000 – £4,000 | 10–15 hours/month | 3–5 months |
| 200–1,000 invoices/month | £4,000 – £8,000 | 30–60 hours/month | 2–3 months |
| 1,000–5,000 invoices/month | £8,000 – £15,000 | 80–150 hours/month | 1–2 months |
| 5,000+ invoices/month | £12,000 – £25,000 | 200+ hours/month | Under 2 months |
At higher volumes, the payback is almost immediate. A business processing 3,000 invoices per month at 4 minutes each is spending 200 hours — that’s more than one full-time equivalent devoted entirely to invoice data entry. The automation cost is a fraction of that annual salary, and it processes invoices 24/7 without holidays or sick days.
Ongoing costs: typically £30–£150/month for infrastructure depending on volume. No per-invoice fees.
Use the AI Savings Calculator for your specific numbers.
Frequently Asked Questions
Find Out How Much Invoice Processing Is Costing You
The AI Audit analyses your invoice volumes, supplier mix, and current workflow, then gives you exact time and cost savings from automation.
Book an Invoice Automation Audit