A VAT registration number is a unique identifier used by HMRC to track VAT-registered businesses in the UK.
For example:
If your VAT period ends on 31 March
Your deadline will usually be 7 May
This gives you one month and 7 days to submit and pay.
Most businesses submit VAT returns quarterly, but deadlines may vary depending on your accounting scheme.
It is important to check your specific VAT return dates.
What Is a VAT Registration Number?
A VAT registration number is a unique number assigned by HMRC to a VAT-registered business.
It is used to identify the business for VAT purposes and must be included on invoices and official documents.
What Does a UK VAT Number Look Like?
A UK VAT number typically consists of:
- The prefix “GB”
- Followed by 9 digits
Example:
GB123456789
Who Needs a VAT Registration Number?
Businesses need a VAT number if they:
- Are registered for VAT
- Exceed the VAT threshold
- Choose to register voluntarily
The number is issued after successful registration.
How to Find a VAT Registration Number in the UK
If you need to find a VAT registration number for a UK company, first check its invoices, receipts or website. You can also ask the business directly or use HMRC’s VAT number checking service to verify a number you already have.
You can find your VAT number:
- On your VAT registration certificate
- In your HMRC account
- On previous VAT returns
It should also appear on your invoices.
How to Check a VAT Number in the UK
You can check a VAT number by:
- Using official VAT checking tools
- Verifying details through HMRC systems
- Confirming the number matches the business
This helps ensure the number is valid.
Why Is a VAT Number Important?
A VAT number is important because:
- It confirms VAT registration
- It is required on invoices
- It allows businesses to reclaim VAT
It is essential for compliance.
What Happens If You Use an Incorrect VAT Number?
Using an incorrect VAT number can lead to:
- Invalid invoices
- VAT being reclaimed incorrectly
- Potential penalties
Accuracy is essential.
If you need to find a VAT registration number for a company in the UK, check its invoices, receipts or website first.
ou can also use HMRC’s VAT number checking service to verify that a VAT registration number is valid and matches the business.
How to Use a VAT Registration Number
Once your business is VAT registered, your VAT registration number is used to identify the business for VAT purposes. You should include it on VAT invoices and use it when dealing with HMRC about your VAT registration.
If you receive a VAT number from another UK business, check that the number is valid and that the business details match before relying on it for VAT purposes.
Common VAT Number Mistakes
Under Common VAT Number Mistakes, add these two paragraphs:
Common VAT number mistakes include entering the number incorrectly, using a VAT number that belongs to another business, or failing to check whether a number is valid.
Before relying on a VAT registration number, check that it is correct and that the associated business details match. This is particularly important when dealing with VAT invoices or reclaiming VAT.
Use a VAT Calculator with Your VAT Number
Using your VAT number correctly is essential when calculating VAT.
Use our VAT calculator to estimate VAT amounts for your transactions.
VAT Registration Number FAQs
What does a VAT number look like?
A standard UK VAT registration number usually consists of the letters “GB” followed by nine digits. For example: GB123456789.
Where can I find my VAT number?
You can find your VAT registration number on your VAT registration certificate, in your HMRC business tax account, and usually on VAT invoices issued by your business.
Can I check someone else’s VAT number?
Yes. You can check a UK business VAT number using HMRC’s VAT checking service to confirm whether the number is valid and whether the associated business details are correct.
You may also find these helpful:
VAT Return UK
VAT Calculator UK
VAT Registration UK
These guides can help you understand VAT returns and calculate VAT correctly for your business.
Disclaimer
This guide is for general information only. While every effort is made to ensure accuracy, we are an independent resource and not affiliated with HMRC. Always consult a qualified professional for financial decisions.