How to Check a UK VAT Number: Complete Guide

Industry News - 20th September 2023

If you need to verify the validity of a UK business’s VAT number, there are online tools available to simplify the process. In this comprehensive guide, we will explore how to check a UK VAT number, understand what VAT numbers are, and address common questions surrounding this essential aspect of business transactions.

What Are UK VAT Numbers?

Before we delve into the process of checking VAT numbers, let’s clarify what VAT numbers are. In the United Kingdom, a Value Added Tax (VAT) number is a unique identifier assigned to businesses that are registered for VAT purposes. It is crucial for businesses engaged in buying and selling goods and services, as VAT is a consumption tax levied at various stages of production or distribution.

The Importance of Checking VAT Numbers

Checking the validity of a VAT number is of paramount importance for several reasons:

Avoiding Fraud:

Verifying VAT numbers helps prevent fraudulent transactions, ensuring you’re dealing with a legitimate business entity.

Input Tax Recovery:

VAT-registered businesses can only claim back VAT on purchases made from other VAT-registered businesses. Accurate checks are essential to claim input tax recovery legitimately.

HMRC Compliance:

Ensuring that you’re transacting with VAT-registered suppliers or customers is vital for complying with HM Revenue and Customs (HMRC) regulations. Non-compliance can lead to penalties and legal issues.

How to Check a UK VAT Number

To verify a UK VAT number, follow these steps:

Step 1: Access the Online Service

Visit the official HMRC website’s VAT number checker at

Step 2: Enter the VAT Number

In the provided search box, enter the VAT number you want to verify.

Step 3: Validate the VAT Number

Click the “Check” button. The online service will validate the VAT number and provide you with the following information:

  • Validity: Confirmation if the VAT registration number is valid
  • Business Details: The name and address of the business associated with the VAT number

Step 4: Obtain a Certificate (Optional)

If you require proof of the validation, you can obtain a certificate from the online service. This certificate serves as valuable evidence in case you need to demonstrate your due diligence to HMRC.

Common Questions About UK VAT Numbers

Q1: Can I check the validity of a VAT number from any EU country?

Yes, you can. The European Commission offers an online service that allows taxpayers to verify the validity of VAT numbers from anywhere in the EU. Access this service at

Q2: How often should I check VAT numbers?

It’s a good practice to verify VAT numbers before entering into significant business transactions with new suppliers or customers. Regular checks can help you maintain compliance and reduce the risk of fraud.

Q3: What should I do if a VAT number is invalid?

If you discover that a VAT number is invalid, you should contact the business in question to address the issue. It’s essential to clarify the situation and avoid engaging in transactions with unregistered entities.

Checking the validity of a UK VAT number is a fundamental aspect of conducting business transactions. By following the steps outlined in this guide and staying informed about VAT regulations, you can protect your business from potential fraud and ensure compliance with HMRC requirements.

Contact Perrigo Consultants for Tax and Accounting Services

For expert tax and accounting-related services, including VAT compliance and consultation, consider reaching out to Perrigo Consultants. As chartered accountants and tax advisers, we have the expertise to guide your business through complex financial matters. Ensure your business’s financial health and compliance by partnering with Perrigo Consultants.

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