UK VAT Number Checker

Verify any UK VAT number against HMRC's official database. See the registered business name, address, and Companies House record.

How This Tool Works

Enter a UK VAT number and we run two levels of verification: checksum validation using the official Modulus 97 algorithm, then HMRC live verification to confirm the number is actively registered.

What Is a UK VAT Number?

A UK VAT number is a unique 9-digit identifier assigned by HMRC to businesses registered for Value Added Tax. It follows the format GB followed by 9 digits.