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5
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What is VIES the VAT Information Exchange System?

We take a closer look at the VAT Information Exchange System (VIES), the EU's VAT checker, to find out what it does.
European Union
VAT
Author
Jenny Longmuir
Last updated
2026-10-20
What is VIES the VAT Information Exchange System?
Table of content

Key takeaways

  1. VIES is an EU-wide VAT number checker that lets businesses verify if trading partners are VAT-registered for cross-border transactions.
  2. Valid VAT numbers mean no VAT is charged on intra-EU transactions, simplifying compliance and reducing paperwork.
  3. Using VIES is simple and free, but delays in national database updates can occasionally show valid numbers as invalid—when in doubt, confirm with the local tax office.

In short: VIES (the VAT Information Exchange System) is a European Commission tool. It checks whether a VAT number issued by an EU member state or Northern Ireland is valid. Businesses use VIES to confirm that trading partners are VAT-registered for cross-border trade. When both parties are registered, no VAT is applied to an intra-community transaction.

Put simply, VIES is a Value Added Tax (VAT) number checker service. It lets you find out if a company has completed its VAT registration. It also shows whether the company may do cross-border business within the European Union. VIES checks VAT numbers from each EU country. It gives an instant answer for any VAT number in the EU country you select.

EU flag with yellow stars on a blue background, waving on a flagpole.

What is VIES?

The VAT Information Exchange System (VIES) is an electronic system that validates the VAT identification numbers of businesses registered in the European Union. VIES is a crucial tool for businesses and individuals. It lets them check that VAT numbers are genuine and that they comply with EU VAT rules.

The European Union oversees VIES. It allows VAT information to flow smoothly between member states. This makes VIES an essential resource for anyone involved in cross-border trade within the EU.

What does the VIES VAT Information Exchange System do?

The VIES (VAT Information Exchange System) is a search engine run by the European Commission that lets EU Member States exchange tax data and information.

VIES was created to combat tax fraud, evasion, and avoidance. The VIES tool lets traders in the European Union automatically check the VAT numbers of customers in the EU. You should also check your own business's VAT number in VIES regularly. This makes sure your registration stays active and your details stay current.

VIES is essentially a VAT checker. It lets businesses in the European Union confirm online whether a customer has a valid VAT number from one of 27 EU countries.

Any business or person VAT registered in an EU member state must register with VIES. This applies if they carry out business, art, or professional activities there, or have a permanent establishment there. In most countries, VIES registration is automatic once you get your EU VAT number. There are some exceptions, including Germany, Italy, and Spain.

A major advantage of VIES is that it has cut paperwork and admin costs for businesses. For example, since VIES began, some 60 million fewer customs documents have been produced each year.

What are the benefits of using VIES?

Using the VAT Information Exchange System (VIES) offers businesses several key benefits:

  • Efficient VAT number validation: VIES lets you check quickly and easily whether a VAT number from any Member State or Northern Ireland is valid. This means you can confirm your trading partners’ VAT numbers without delay.
  • Reduced administrative burden: VIES makes validation simpler with a drop-down menu where you pick the Member State that issued the VAT number. This cuts the time and effort that VAT number validation takes.
  • Improved accuracy: VIES makes sure VAT numbers are accurate and up to date. This lowers the risk of errors or mismatches that could lead to compliance issues.
  • Enhanced compliance: When you check VAT numbers through VIES, you can make sure you meet your VAT obligations and avoid penalties. This proactive approach keeps operations running smoothly and builds trust with tax authorities.

How does the VIES VAT checker work?

The VIES VAT checker sends a customer's VAT number to the right national database, which confirms whether the number is valid. Here's why this matters. According to EU law, VAT on an intra-community transaction only needs to be paid in the buyer's country. An intra-community transaction is when one taxable business trades goods or services with another inside the EU.

With the VIES check system, suppliers can quickly and easily check the VAT numbers that buyers give them. VIES checks whether a VAT number is valid. It also checks that the number belongs to a specific trader name and address. So, no VAT is applied to an intra-community transaction if both buyer and supplier are listed in VIES. Both must also be registered as taxable persons in their home countries.

Screenshot of VAT Information Exchange System (VIES) webpage.

The VAT validation system checks a VAT number by sending the customer’s tax ID details through VIES. These details are sent securely to the customer’s national database. The database then decides if the VAT number is “valid” or “invalid.”

The United Kingdom has a similar system for checking the UK VAT registration number of a business. To check a UK VAT number, simply head over to the VAT information exchange system UK.

How do I use the VIES VAT number checker?

You use the VIES VAT number checker by entering a VAT number, picking the Member State, and clicking Verify. To find out if a VAT number is valid or invalid, go to the VIES VAT Validation Tool and follow the steps below.

  • Enter the VAT number you want to check.
  • Select the relevant Member State from the drop-down menu.
  • Click the Verify button.

If the response is ‘valid’, the VIES checker tool will show the EU VAT information. If the response is ‘invalid’, the VAT number you entered is not registered in the relevant national database. The VAT number may not exist, or it may not be activated for intra-EU transactions. Or the registration may not be final yet.

The UK VAT information checker works in much the same way. It confirms whether a business that claims to be UK VAT registered is ‘valid’ or ‘invalid’.

Bear in mind that changes in national VAT databases can take time to show up on VIES Europe and UK. If a VIES VAT number check shows as invalid and it’s not clear why, ask the customer to contact their local tax office.

Why should you use VIES?

The VAT Information Exchange System (VIES) is an invaluable tool for businesses and individuals who need to check that VAT numbers are genuine. VIES has some limits. But its benefits make it essential for anyone operating in the European Union. These include efficient VAT number validation, less admin, better accuracy, and stronger compliance.

A valid VAT number matters. When you use VIES to validate VAT numbers, you can meet your VAT obligations and avoid penalties. This builds trust and helps intra-community trade run smoothly.

Do you need help with your VAT compliance? Book a free call with one of our VAT experts to find bespoke solutions for your business, optimize your VAT costs, and reach millions of new potential customers.

How Taxually handles this

Taxually’s CrossTax handles VAT registration, VAT, OSS and IOSS returns and fiscal representation in the countries you sell into, and checks your sales data against 250+ validation rules before each filing. OneTax then pays every tax authority with one bulk payment in your chosen currency.

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Author
Jenny Longmuir
•
Copywriter
Jenny Longmuir is a content writer with experience in tax and fintech. At Taxually, she covers topics such as global tax compliance, digital reporting, and automation, helping businesses stay informed about the evolving regulatory landscape. Her work focuses on making complex financial and compliance information clear and accessible to a broad audience.
FAQ

Frequently asked questions

What is VIES and what does it do?

‍VIES (VAT Information Exchange System) is an EU-run online tool that allows businesses to verify if a VAT number is valid for cross-border transactions within the EU. It helps reduce fraud, simplify compliance, and cut down on administrative paperwork.

Who needs to use VIES?‍

Any EU-based business engaged in cross-border trade within the EU should use VIES to confirm whether their customers or suppliers are properly VAT-registered. It’s also useful for checking your own VAT number’s validity.

How do I use the VIES VAT checker?‍

Visit the VIES VAT Validation Tool, enter the VAT number, select the issuing Member State from the dropdown, and click "Verify." You’ll receive a response showing whether the number is valid or invalid.

What does it mean if a VAT number is marked ‘invalid’?‍

An ‘invalid’ result could mean the VAT number doesn't exist, hasn’t been activated for intra-EU transactions, or the registration is still being processed. If in doubt, ask the business to confirm their details or contact their local tax authority.

Are all VAT numbers in the EU automatically listed in VIES?‍

Most VAT numbers are listed automatically upon registration, but exceptions exist. Countries like Germany, Italy, and Spain may require additional steps before the number appears in VIES.

Can I check UK VAT numbers with VIES?‍

No. Since Brexit, UK VAT numbers are no longer listed in VIES. To validate a UK VAT number, use the UK Government’s VAT checker.

Is VIES free to use?‍

Yes, the VIES system is completely free to use and accessible to anyone online.

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