LedgerLens · Accounting · Austria

AI that reads 40,000 invoices a month

Document AI that extracts, checks and books supplier invoices for a network of accounting firms.

Client
LedgerLens
Services
AI & Data, Strategy & Architecture
Timeline
9 weeks · 2025
Stack
Python, Claude, pgvector, FastAPI, Azure, dbt

The challenge

Accountants spent most of their month typing invoice data into bookkeeping software, with errors found only at year-end.

What we did

  1. Mapped the firms' workflows and picked the three steps where AI paid back fastest.
  2. Built extraction with confidence scores, so only unclear invoices go to a person.
  3. Connected results directly into the firms' bookkeeping software, hosted in the EU.

The results

83%Less manual data entry
99.1%Field accuracy after review
40kInvoices processed monthly
“Our people review now instead of typing. Month-end closes four days earlier.”
Managing Partner, LedgerLens
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