---
title: "NAV Online Számla automatic cross-check"
description: "Via the NAV M2M API the automation pulls the official XML for the invoice by tax number and invoice number, compares totals, VAT and dates with the PDF, checks "
canonical: https://aifelhasznalas.hu/en/workflows/invoices-receivables/nav-online-invoice-check
language: en
publisher: AI Felhasználás
updated: 2026-09-19
---

# NAV Online Számla automatic cross-check

Category: Invoice processing, verification and receivables


Via the NAV M2M API the automation pulls the official XML for the invoice by tax number and invoice number, compares totals, VAT and dates with the PDF, checks that the issuer exists and its tax number is not suspended or on the tax-debtor list, and alerts finance on any discrepancy.

## How it works

1. Query NAV by tax number and invoice number
2. Compare with extracted data
3. Taxpayer status check and alert

Tools: NAV Online Számla M2M, n8n

Source: AI Automation Market Report and Practical Guide (2025–2026)