Polish VAT number check
Check a Polish supplier's or customer's number against VIES, the European Commission's register. Below: the format, what it's called locally, and the mistakes that make a correct number fail.
Paste the number with or without the country prefix. Nothing you enter is stored.
The format
| Prefix | PL |
|---|---|
| After the prefix | 10 digits |
| Structure | One block of 10 digits. |
| Example | PL1234567890 |
You can paste the number with spaces, dots or dashes; the checker removes them.
What it's called
Numer identyfikacyjny VAT: in practice the NIP (tax identification number) with PL in front, often called NIP UE.
The Polish VAT number is the 10-digit NIP with the PL prefix.
Registered, but invalid in VIES?
Ordinary VAT registration isn't enough. A business must register as a VAT-UE taxpayer before its PL number is valid for EU supplies, purchases and services.
What trips people up
- Active on the White List but invalid in VIES usually means the business isn't registered as VAT-UE.
- For Polish domestic purchases, paying more than PLN 15,000 to an account that isn't on the White List can make you jointly liable for the supplier's VAT.
Other ways to check
Wykaz podatników VAT (the White List): Shows domestic VAT status and registered bank accounts, not VAT-UE status. For cross-border trade, the VIES result above is the one to keep with your VAT records.
Sources
Formats from the European Commission's VIES FAQ, checked 16 October 2026. Rules can change; the tax authority's own guidance wins.
Questions about Polish VAT numbers
What is the format of a Polish VAT number?
PL followed by 10 digits. Example: PL1234567890.
What is a Polish VAT number called?
Numer identyfikacyjny VAT: in practice the NIP (tax identification number) with PL in front, often called NIP UE. The Polish VAT number is the 10-digit NIP with the PL prefix.
Why would a correct Polish VAT number show as invalid in VIES?
Ordinary VAT registration isn't enough. A business must register as a VAT-UE taxpayer before its PL number is valid for EU supplies, purchases and services.