To verify a VAT number is to confirm that a business is registered for VAT and that the number it gave you is valid and active. That matters for business transactions inside the EU, because you need a valid number on the other side before you can apply the 0% rate to a cross-border supply. In this article you can read why you check a VAT number, how to do it, and one limitation that catches people out.
Table of contents
Why verify a VAT number?
Checking that a VAT number is valid tells you that you are dealing with a registered business. That helps you with:
- Compliance: establishing that your counterparty is a taxable entity rather than a private individual.
- Cross-border trade: applying the 0% rate correctly on intra-Community supplies, which requires a valid number.
- Risk management: limiting your exposure to fraud and to invoices that will not hold up in an audit.
How do you look up a VAT number?
There are a few reliable, official routes:
- VIES, run by the European Commission: check free of charge whether a European VAT number is valid and active through the official VAT validation tool. Read more about how the EU’s VIES system works.
- The invoice itself: your supplier’s VAT number has to appear on every invoice, and it is often on the company website or in the footer of their terms.
- National sources: most countries publish how their VAT numbers are structured, which helps you spot a malformed number before you even validate it. For Dutch numbers, see the Dutch government business portal.
The limitation worth knowing
There is no public search engine that returns a company’s VAT number when you type in its name. VIES works the other way round: you supply a number and it tells you whether that number is valid, and in many cases which name and address it belongs to. So if you do not have the number yet, you get it from the invoice, from the contract or by asking your contact. That distinction explains most of the frustration around this topic, because people expect a directory and find a validator.
Rules and obligations
Businesses that pass a national turnover threshold have to register for VAT and file returns periodically, and they have to state their VAT number on invoices and other business documents. The threshold itself, and the filing frequency, differ per country, so treat the figures you find for one member state as that country’s rules rather than a European standard. Getting this right keeps your records transparent and keeps penalties off the table.
What to watch out for
- Validity and match: check that the number is valid and that the name and address it returns match the party you are actually dealing with.
- Currency of the data: a number that was valid last year can have been deregistered since, so recheck long-standing partners now and then.
- Keep the evidence: save the result of the check, because if the 0% rate is questioned later you will want to show what you verified and when.
The role of TriFact365
TriFact365 does not validate VAT numbers through VIES itself. What it does do is recognise the VAT number on your purchase invoices automatically and carry it into the booking proposal, so the right details are in your records from the start and there is less to retype and mistype. The validation step you then run in VIES or in your accounting package. Read how the route from receipt to journal entry works.
Frequently asked questions about verifying a VAT number
No. There is no public directory that returns a VAT number from a company name. You can validate a number you already have, and you get that number from the invoice, the contract or your contact.
In the European Commission’s VIES tool, free of charge. It confirms whether the number is valid and active, and often returns the registered name and address as well.
Yes. Save the result with the date, because if the 0% rate on a cross-border supply is questioned later, the check is part of your evidence.
VIES only covers EU member states. For countries outside the EU you use that country’s own tax authority or business register, and the format and availability differ per country.
Yes. TriFact365 reads the VAT number off your purchase invoices automatically and includes it in the booking proposal. Validating the number is a separate step, which you run in VIES or in your accounting package.
In closing
Verifying a VAT number takes seconds once you know where to do it and what the tool can and cannot tell you. Make it a standard step for new and foreign partners, keep the result on file, and you trade inside the EU on solid ground without surprises turning up in your records months later.
