VAT checker › Northern Ireland
Northern Irish VAT number check
Validate a Northern Ireland VAT number (UK VAT number (XI prefix)) live against VIES.
Northern Ireland in VIES: available
Northern Irish VAT number format
| Country prefix | XI |
|---|---|
| Format | XI + 9 or 12 digits |
| Example | XI123456789 |
| Local name | UK VAT number (XI prefix) |
| 7-day VIES uptime | 100.0% |
Under the Windsor Framework, Northern Ireland businesses trading goods with the EU use the XI prefix, which can be checked in VIES. GB numbers cannot.
What does a Northern Irish VAT number look like?
Northern Ireland VAT numbers have the format XI + 9 or 12 digits, for example XI123456789. Under the Windsor Framework, Northern Ireland businesses trading goods with the EU use the XI prefix, which can be checked in VIES. GB numbers cannot.
How do I check a Northern Irish VAT number?
Type the number including the XI prefix into the checker on this page. We validate the format, then query VIES, which forwards the request to the Northern Irish tax authority's database and returns whether the number is valid for intra-EU transactions.
What is the Northern Irish VAT number called locally?
In Northern Ireland it is called the UK VAT number (XI prefix).
Is the Northern Irish VIES service down?
At the last check the Northern Irish system was available. Uptime over the last 7 days: 100.0%.
Checking many Northern Irish customers?
Upload a CSV and get every result back with VIES consultation numbers for your audit file.
Bulk check