What Is a UTR Number?

UTR stands for Unique Tax Reference, a 10 digit code assigned to you and you alone. Your UTR exists entirely for tax management. It cannot be used as any other form of identification.

Do You Need a UTR Number?

Yes, you do need a UTR number. Every single piece of correspondence you receive from HMRC, and every self-assessment tax return you file, is assigned to your UTR number.

All this data is stored on the HMRC database, which means it’s incredibly easy for both HMRC and yourself to review historical information and submit new data.

Without a UTR number, it would be easy for things to get mismatched and lost. UTR numbers ensure the stability of financial information with HMRC, in a country with around 5 million working people, and a further 4 million small businesses.

With more than 9 million unique entities paying self-assessment tax every year, the Government has a lot to manage. HMRC needs a way to separate and monitor them all, and you need a way of making sure you can keep track of your tax return responsibilities and records.

How Do I Get a UTR Number?

Acquiring your UTR number is very simple. All you have to do is register as a self-employed worker. Once registered, you are supplied with documents containing your UTR number. If you want to get your UTR number without registering as self-employed, you need to contact HMRC directly to get your reference number. You can either do this by phone or post. Keep in mind this requires personal information to be shared, just as it does when you register for HMRC as a self-employed worker.

How Do I Get a UTR Number for a Limited Company?

Just as an individual can owe tax, so can a limited company. That tax comes in the form of National Insurance payments, Corporation Tax, VAT, and other tax variables. To ensure the right payments are made to HMRC, a business needs a unique taxpayer number.

When you set up a limited company, you’ll need to register with Companies House. This process involves the provision of several details to enable formation. After this process is completed, you will receive all the relevant information pertaining to your company’s registration, and this includes its UTR number.

How Long Does It Take to Get a UTR Number from HMRC?

Whether you register for self-assessment tax or as a limited company, your UTR number is provided to you following the completion of the registration process. Access to your UTR number will be immediate once your application is processed.

If you are attempting to obtain your UTR number without registering for self-assessment tax, the process can take longer as there is no automation involved. It will likely require several points of contact with HMRC.

How Do I Find My UTR Number?

If you’ve already registered for self-assessment tax, you’ll have a UTR number as it’s an essential part of tax returns. To find a lost UTR number, you can check in two places:

  • Online — Your UTR can be found on the HMRC web portal. All you have to do is sign in to access it.
  • Paper — Most documents relating to self-assessment tax will contain your UTR number. Locate the document and you’ll locate your UTR number.

Can I Change My UTR Number?

Once a UTR number is assigned, it cannot be changed — and you don’t need to change it. A UTR number is similar to a National Insurance number; it is your unique identifier. Even if you de-register for self-employment and then register again later, it will remain the same.

There is only one exception to this rule. If you file for private bankruptcy, you will be assigned a new UTR number.

Looking for advice on getting a UTR number because you are interested in starting your own business and being your own boss? Work with Mint Formations today to register your company name and we’ll help you get started on your self-employment journey!

Want to register your UK limited company today?


Raj co-founded Mint Formations with business partner Andy Tree in 2017. Mint formations is established to nurture small UK businesses and enable exciting new opportunities for quick growth. As a successful entrepreneur, Raj knows how to start and run a business. He currently resides as a board member of seven successful companies across the world. He is best known for founding Integra Global Solutions, specialists in robotics, automation, and business process optimisation.

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