XI VAT format
Northern Ireland VAT number check
Check a Northern Ireland VAT number against VIES and confirm whether it is currently reported as valid for intra-EU transactions.
Expected format
A typical Northern Ireland VAT ID looks like XI123456789. You can paste the full number with the XI prefix or select Northern Ireland in the checker.
XI is used for Northern Ireland VAT under the post-Brexit rules.
What VIES can return
- Valid: the VAT number is currently confirmed for intra-EU transactions.
- Invalid: VIES did not confirm the number as valid at the time of the check.
- Unavailable: VIES or the national VAT registry did not reply.