Invoice processing automation for accounts payable
Invoices at the companies below arrived by email, supplier portal, EDI, fax and post, each supplier in its own layout. Reading every field, matching it to the purchase order and master data, and posting clean invoices straight to the ERP leaves the AP team with only the exceptions. One group cut turnaround from 14 working days to 36 hours.
How does invoice processing automation work?
Invoice processing automation takes supplier invoices from arrival to ERP posting, leaving people only the exceptions. It reads the header and every line with a confidence score per field, then checks them against the purchase order, goods receipt, contract prices and master data. Clean invoices post with the right G/L account, tax code and cost centre; low-confidence fields and mismatches go to a reviewer with the invoice image and the reason.
- A global FMCG group cut invoice turnaround from 14 working days to 36 hours on about 2.4 million supplier invoices a year.
- At the group, 67% of invoices post to the ledger with no human touch, across 22 languages and 14 currencies.
- An OEM manufacturer cut average handling time per invoice by 61%, and 95% of exceptions are handled automatically.
- A US telecom MVNO cut invoice errors by 95% and time per invoice by 70%, with 91% extraction accuracy within 10 weeks.
Invoice processing and AP, step by step
Capture invoices from every channel
Invoices arrive through a monitored mailbox, the supplier portal, EDI, fax and a central scanning hub, as PDFs, spreadsheets or scanned paper. At the FMCG group, email brings about 60% of volume, the supplier portal 25%, EDI from the largest suppliers 12% and uploads from regional finance teams 3%.
Read the header and every line
The header (invoice number, vendor, date, total, payment terms) and each line's description, quantity, unit price and total are read, every field with a confidence score. At the OEM manufacturer, OCR, a handwriting model trained on its own invoices and a language model that checks totals and tax codes run in turn.
Match to PO and master data
Each invoice is checked against ERP master data for vendor, cost centre, G/L account and tax code, then matched line by line to the purchase order and goods receipt within set tolerances. Non-PO invoices get their cost centre and account derived, and contracted suppliers are checked against contract prices.
Route approvals and exceptions
Approvals route by invoice type, with reminders and escalation for anything left waiting: at the MVNO, carrier invoices go to the carrier-relationship team and retail settlements to regional finance. Exceptions reach a reviewer on one screen with the invoice image, extracted fields, failure reason and a suggested fix.
Post, archive and flag duplicates
Approved invoices post to the ERP through its standard interfaces, at line level where cost accounting needs it, with rollback if a posting fails. Posted invoices are screened for duplicates and fraud patterns, such as changed payment details followed by an unusual amount, and archived under each jurisdiction's retention rules.
AP staff keep the cases that need judgement: ambiguous PO matches that need procurement, supplier disputes and suspected fraud. At the OEM manufacturer these are the 5% of invoices still handled by people, and the team's time moved to complex exceptions and supplier relationships. At the FMCG group, AP capacity moved to supplier-relationship management, master-data quality and cash-flow analytics.
Results from 3 deployments
Every figure below comes from the case study it links to.
OEM Manufacturer
Touchless SAP Vendor Invoice Posting
- 100K invoices indexed
- 100K+ vendor invoices indexed
- 75% productivity improvement
US Telecom MVNO
- $1.5M projected 3-year savings
- 70% time saved vs old process
- 24/7 around-the-clock processing
Global FMCG
Demand Forecasting + AP Automation
- 18% inventory reduction
- 8,000 SKUs forecasted
- 12% forecast MAPE (was 18%)
The accelerators behind it
Pre-built accelerators do the work, configured to your documents, rules and systems. Delivery took 10 to 32 weeks in the case studies above.
DocuMage →
Flagship IDP — OCR + ICR + LLM for any document type, replaces legacy OCR.
AP Automation →
Vendor onboarding to payment release with policy guardrails.
Workflow Automator →
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Anomaly Detector →
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Compliance Engine →
Continuous controls testing against regulatory frameworks.
Document processing ROI calculator
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Invoice processing and AP: the questions buyers ask
How fast is invoice processing once it's automated?
At a global FMCG group, average turnaround fell from 14 working days to 36 hours, 67% of invoices post with no human touch, and early-payment discount capture rose from 19% to 71% of available discounts. At a US telecom MVNO, invoices are processed around the clock instead of in working hours, and time per invoice fell 70%.
How accurate is it?
The US MVNO cut errors 95%, and extraction accuracy reached 91% within 10 weeks of deployment; its remaining defects are mostly genuinely ambiguous cases, which go to human review. Every field carries a confidence score, so uncertain values go to a person instead of posting. At the FMCG group, supplier disputes halved, mainly because mismatches are now caught at intake, not after posting.
Does it catch duplicate or fraudulent invoices?
Yes. At the OEM manufacturer, posted invoices are screened continuously with exact-match, fuzzy-match and statistical checks: the same vendor, amount and invoice date within tolerance, changed payment instructions followed by an unusual amount, and odd invoice sequences. Anything flagged goes to fraud review.
Does it work with our ERP?
Yes. At the OEM manufacturer and the FMCG group, invoices post through the ERP's standard inbound interfaces. At the FMCG group, the matching rules pull the purchase order, goods receipt and master data from the ERP, and every posting happens natively in it. At the MVNO, automation enters invoice data into the AP system around the clock.
Can it handle different supplier formats and languages?
Yes. The OEM manufacturer receives PDFs, spreadsheets, faxes and scanned paper, each supplier with its own layout. Its top 50 supplier formats cover about 80% of volume, and the long tail goes through general-format extraction. The FMCG group processes invoices in 22 languages and 14 currencies, and the MVNO's extraction model was tuned on its own carrier and supplier invoices.
Where does invoice data stay?
In each company's own environment. The OEM manufacturer's platform runs in its private cloud, connected to its existing ERP. The US MVNO's runs in its managed cloud with financial-data controls, and each invoice is archived with the retention period its state or locality requires. Every step, from arrival through approval, payment and archive, is logged for audit.
How long does a deployment take?
Delivery took 10 weeks at the US telecom MVNO, which reports a return on investment from its first day live and $1.5M in projected savings over 3 years. The OEM manufacturer took 22 weeks. At the FMCG group, AP automation ran alongside demand forecasting in a single 32-week programme.
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