VIES: how to verify an EU VAT number
How to check an EU VAT number on VIES, keep evidence of the result and react when the number comes back invalid.
Expert note: This article was written by our chartered accountancy firm. Information is current as of 2026. For a personalised review of your situation, contact us.
VIES: how to verify an EU VAT number
Updated March 2026 - VIES is the EU system used to verify whether a VAT number is valid for intra-EU transactions. It is a search tool connected to national databases, not a standalone EU database.
Why it matters
You should validate the number, keep evidence of the result and store it with the invoice and transaction file.
See also VAT returns, e-commerce VAT obligations and multiple VAT rates on one invoice.
If the number appears invalid
Possible reasons include:
- ▸a typo
- ▸the number is not yet activated for EU transactions
- ▸a database update delay
- ▸a genuine invalid status
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Conclusion
The good practice is not only to check the number, but to keep the evidence and integrate it into your VAT process.
Do you invoice or buy often within the EU?
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Article written by Samuel HAYOT
Chartered Accountant, registered with the Institute of Chartered Accountants.
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