UK VAT Number HMRC Official Checker
Pricing
Pay per usage
UK VAT Number HMRC Official Checker
UK HMRC official VAT checker with offline Modulus 97 checksum validation, HMRC v2 OpenAPI integration, and consultation proof numbers at $0.005/check.
UK VAT Number HMRC Official Checker
Pricing
Pay per usage
UK HMRC official VAT checker with offline Modulus 97 checksum validation, HMRC v2 OpenAPI integration, and consultation proof numbers at $0.005/check.
9 or 12-digit UK VAT registration number (with or without 'GB' prefix or spaces, e.g. 'GB 220 4302 31', 'GB337440071', or '553557881').
Your own 9-digit UK VAT number to obtain a formal HMRC audit consultation proof reference number.
Optional list of UK VAT numbers (e.g. ['GB220430231', 'GB337440071']) for sequential verification.
[]Retrieve registered business trading name and structured address lines.
Optional user-supplied OAuth2 Bearer token for direct live HMRC v2 API production access. If omitted, uses Modulus 97 mathematical checksum verification and sandbox/public fallback.