Hi Product Hunt! I built this after seeing how often invoice fraud is just a changed IBAN on an otherwise normal-looking invoice. Each number can be valid on its own, but a German supplier asking to be paid into a Lithuanian account should be a hold. The checker validates the IBAN (checksum, country, bank code), checks EU/UK VAT (optionally live against VIES), and compares the countries to give pay / review / hold with plain reasons. It's free with no signup. If you want this on every invoice automatically, there's a free n8n template that pulls invoices from Gmail into Sheets, an AP Invoice Triage Pro template ($69), and an API on RapidAPI with 100 free calls a month. Honest limits: it can't tell you who owns an account, only whether the details are consistent. Feedback very welcome. -- Mohamed

Free IBAN & VAT Checker

Check a supplier's IBAN and VAT before you pay

Check a supplier's IBAN and VAT before you pay