VAT Numbers — How to Find, Get, and Check One

Understanding VAT numbers

A VAT number identifies a business registered to charge and report value-added tax. It helps tax offices track VAT and lets businesses apply the right tax rules to sales. For firms trading across European Union borders, the right number can affect the VAT due on a sale.

A registered VAT number is not the same as a company registration number. The company number identifies a legal business on a national register. The VAT number identifies that business for tax records. A company number and VAT number may both appear on business papers, but they serve different purposes.

Whether you need to register depends on local rules, your sales, and the work you do. Some cross-border sales can create a duty to register even when local sales are low. Check the rules for each country where you sell or hold stock.

• VAT numbers link businesses to VAT records and returns.
• Formats vary, but many start with a country code.
• Registration rules depend on the country and type of sale.

The number can shape how a sale is taxed.

How to obtain a VAT number

To get a business VAT number, apply to the tax office in the country where registration is needed. A UK business applies through HM Revenue & Customs, often called HMRC. An EU business applies through its national tax office. A firm trading in several countries may need more than one VAT registration.

First, check whether your sales or business activity trigger registration. Thresholds and rules differ by country. Cross-border sales, distance sales, and goods held in another country can raise extra duties. Ask the tax office or a tax adviser if your case is not clear.

A VAT number application often asks for basic business and trade details. The exact forms and proof vary. You may need to provide:

• Your legal business name and registered address.
• Your company number, if your country issues one.
• A short account of your goods, services, and expected sales.
• Business or bank records requested by the tax office.

After approval, keep the notice that confirms your number and start date. Do not charge VAT before your registration begins, unless local rules allow it. Applying for a VAT number does not mean approval is automatic.

There is no single EU-wide application form.

Finding and checking VAT numbers

Where can I find my VAT number? Start with the tax office approval letter or your online tax account. It may also appear on VAT returns and sales invoices. If you still cannot find it, ask the tax office that handled your registration.

People also ask, “where do I find my VAT number?” or “where is my VAT number?” The answer is usually in your registration records, not a company register. A company search may show your company number, but it may not show your VAT number. If you have never registered, you may not have one.

To find a supplier’s EU VAT number, ask for it on an invoice or check the supplier’s business records. Then use the European Commission’s VIES VAT number checker. VIES checks national records and reports whether a number is valid for EU VAT purposes. A result can be unavailable if a national system is down, so try again later.

To verify a UK VAT number, use the government’s UK VAT number checker. The HMRC VAT number checker can confirm whether a number is registered. Save the result and date with the sale record, especially for a large order.

A valid result does not always prove that the number belongs to the supplier named on the invoice. Check the business name and address as well. For higher-risk sales, ask the supplier to confirm any mismatch in writing.

Check the number, not just its shape.

VAT number formats by country

Each country sets its own VAT number format. Many use a country code followed by digits or letters, but length and pattern vary. A sample VAT number can help you spot the country prefix. It cannot show that a real business is registered.

Common prefixes include EL for Greece, IT for Italy, ES for Spain, and NL for the Netherlands. Ireland uses IE, Portugal uses PT, and Poland uses PL. Sweden uses SE, Finland uses FI, Latvia uses LV, and Romania uses RO. These codes can guide a VAT number lookup, but a live check is still needed.

Country	Common prefix	What to check
Greece	EL	Check the full VAT number with VIES.
Italy	IT	Confirm the number and business details.
Spain	ES	Formats can vary by entity type.
Netherlands	NL	Check the full number and supplier details.
United Kingdom	GB	Use the UK checker for current status.

A VAT number length is not a safe test by itself. Do not rely on a VAT number generator to create a number for real trade. A fake VAT number can lead to tax and invoice problems. Check the number with the official service instead.

Northern Ireland has special rules for some EU goods trade. Its VAT numbers may use the XI prefix for those transactions. Check the rules that apply to the goods and sale at hand.

India does not use the EU VAT system. It uses GST, a goods and services tax, with its own registration number. A US company also does not have a VAT number for US sales, though it may need VAT registration when trading abroad.

Why VAT numbers matter in business

A VAT number helps a business show its tax status on invoices and VAT returns. It can also help decide whether a cross-border sale needs VAT, and which country’s rules apply. The right treatment depends on the goods or service, the buyer, and the place of supply.

For many business sales in the EU, the buyer’s valid number helps support a reverse-charge treatment. This means the buyer reports VAT instead of the seller charging it. The rule does not apply to every sale, so check the case before issuing an invoice.

Tax ID vs VAT number is a common point of confusion. A tax ID may identify a person or business for several tax duties. A VAT number is for VAT registration and reporting. An EORI number is different again. It identifies a business for customs work, so an EORI is not the same as a VAT number.

Errors can delay payment, lead to a rejected invoice, or cause a tax review. Check the buyer’s details before billing and keep proof of any validity check. Good records make it easier to explain why you used a given VAT treatment.

Common VAT number mistakes

One mistake is treating a company number as a VAT number. Another is assuming that a number is genuine because its prefix and length look right. A search result or sample number cannot confirm current registration.

Businesses also make mistakes when they copy a number with missing digits or use an old one. Check each character against the source record. If the official checker shows no result, ask the supplier to confirm the number and try again later.

Do not put a VAT number on an invoice before registration starts. Do not use a supplier’s number as your own. If you are unsure whether you need to register, ask your local tax office before the first sale that may trigger a duty.

Keep the evidence with your tax records.