Validate many UK VAT numbers at once.
Updated 2026-06-30 · Official source: gov.uk · Live data from HMRC
Paste up to 100 VAT numbers, one per line.
VAT number format & decoder
Decode a GB VAT number digit by digit and verify the mod-97 checksum — no sign-up.
Find a VAT number by company name
Search Companies House for a business, then confirm its VAT number with HMRC.
