In the UK tax system, every individual or business with a tax obligation is assigned a Unique Taxpayer Reference (UTR) number, which allows HM Revenue and Customs (HMRC) to accurately track your tax records and link them to the correct taxpayer.
Consider UTR as your identification number in the tax system (UK). Regardless of your designation, if you are running a business, self-employed, or any other person who must submit a self-assessment tax return, you must understand the UTR. In this blog, we will cover the role of a UTR number in clear terms and outline the most reliable ways to find yours.
UTR Number
A Unique Taxpayer Reference (UTR) consists of ten digits issued to a person or entity with a tax liability in the UK. To identify your tax system, a UTR serves as a unique number assigned by HMRC. This is a fixed number assigned for life and is important for various tax matters, such as handling financial affairs and filing tax returns.

Why is the UTR Number Important?
The UTR number is important for compliance with UK tax regulations. It allows HMRC to accurately record, monitor, and process your tax information.
Here are the key points that identify its significance:
Filing Tax Returns
A company and a self-assessment tax return cannot be made without having the Unique Taxpayer Reference Number. It’s counted as the most important and popular use.
Making Payments and Receiving Refunds
HM Revenue and Customs (HMRC) can readily verify account balances, including tax payments and refunds, using the UTR number.
Registering for Other Scheme
Having a UTR number is required to submit to other taxation systems. They may include PAYE submissions, VAT registration, or the Construction Industry Scheme.
Official Identification
UTR is important for playing the long-term identity for a corporation (a partnership or limited company) or as a separate individual. HM Revenue and Customs use this UTR number to ensure track records are accurate and handled professionally.
Avoiding Penalties
To free yourself from the tax penalties, you should not get rid of the necessary UTR number. When you cannot use it when filing a return, it becomes a major cause of fines, processing delays, and other criminal penalties.
Working with Professionals
Economic advisors and certified accountants require a UTR number to behave as your agent for dealing with HMRC issues.
How to Find your UTR Number?
If you have already gotten a Unique Taxpayer Reference but are uncertain about it, here is how you can locate it:
From HMRC Online Account
On HM Revenue and Customs, when you sign in to your account, all the details about the taxation are displayed in the self-assessment part. You can find your UTR number from there. However, HMRC provides help, as you can set a request reminder.
On Your Old Tax Returns
Your UTR number appears on any self-assessment tax returns you have previously submitted, including paper returns or digital copies.
On Correspondence from HMRC
Finding your UTR is easy from any HM Revenue and Customs communication. You can obtain it from any correspondence, such as mail, letters, or notices regarding tax reminders. Verify your UTR by communicating with them.

Ask Your Accountant or Tax Adviser
If you work with an accountant or tax adviser, they will usually have your UTR on file and can securely confirm it.
Conclusion
A UTR number is a vital part of the UK tax system, acting as your permanent identifier with HMRC. One can’t ignore the heavy fines and penalties that you have to pay if your income is not aligned with the UK taxation system. Keeping your UTR secure and accessible helps prevent delays and penalties while facilitating the management of your tax affairs. If you are unsure about your UTR or how it applies to your situation, professional accountancy advice can help ensure everything is handled correctly.