What is Unique Taxpayer Reference Number?

UTR Number or Unique Taxpayer Reference Number is the series of digits that connects you to Her Majesty's Revenue & Customs (HMRC) and is a unique set of 10 numerals, for example 1234567890, allocated automatically by HMRC for both individuals and entities that fall under tax payment section. It at times has a letter "K" at the end. You will automatically get your UTR number when you register for self-assessment or set up a limited company and is persona and private to the party it is allocated to. Format and digits of UTR, once issued remains in the same format forever.

UTR Number

It is thus a distinct/unique code that is allocated by HMRC to an individual or a company to manage their tax obligations. One can find his UTR number on your previous tax returns and on documentations issued by HMRC like Tax Return (SA100), a notice to complete a tax return (SA316), Welcome to Self-Assessment (SA250) or a statement of account. Depending on the type of document issued the reference number may be printed next to the headings "Tax Reference", "UTR" or "Official Use".

HMRC Tax Return
HMRC Tax Return

Purpose of UTR Number – Why Do You Need UTR Number?

UTR number links you with HMRC for things related to your tax obligations. You will need it under certain circumstances, for instance:

  1. While registering for Self-Assessment Tax Return – In case you have submitted your Self-Assessment tax return without a valid UTR, then firstly it will not go through and secondly you have to pay late filing penalties with interest on it.
  2. Construction Industry Scheme (CIS) – You would need to register under CIS if you are working for a contractor and if you are:2. Construction Industry Scheme (CIS) – You would need to register under CIS if you are working for a contractor and if you are:
    • Self-Employed
    • Own a limited company
    • A partner in a partnership/trust
  3. If you are working with an accountant or anyone else who is helping you with your financial affairs.
  4. For payment of Corporation Tax – Corporation tax should be paid electronically within 9 months and 1 day after the end of each accounting period. The tax return should be submitted online no later than 12 months after the end of each accounting period and you will need your UTR number to complete this task.

When to Register for UTR Number :

Your UTR is the number that identifies you and HMRC links it with everything that you do and your tax arrangements. You will receive UTR number automatically once you register for your Self-Assessment Tax Return with HMRC, however you need to notify HMRC that you are self-employed for it to issue you one. In case HMRC discover that you are operating as a self-employed without notifying them or rather without registering for a UTR number, they can charge with you with heavy fines and in worst case, with a criminal prosecution as well.

So, if you do not want to run from post to pillar at thirteenth hour of your deadline getting over, register for Self-Assessment Tax Return well in advance.

As per HMRC officials, deadline to file your Self-Assessment Tax Return is 31st January and they can take up to 6 weeks to issue your UTR Number so you must register with HMRC latest by 20th December in order to be on safe side of the deadline. In case, if you miss the deadline, you may end up paying late filing penalty fees as heavy as £1600.

UTR Number

For any general enquiries, you can reach out to HMRC Helpline numbers during their working days.

Telephone:   0300 200 3310

Outside UK:   +44 161 931 9070

Opening times:
8am to 8pm, Monday to Friday
8am to 4pm Saturday
9am to 5pm Sunday

Closed bank holidays, Easter Sunday, Christmas Day, Boxing Day and New Year's Day

What All Do You Need to Register For UTR Number:

You will need to have the following information in hand to register for Self-Assessment Tax Return and be allocated a UTR Number:-

  1. Full Name, as per your ID Proof
  2. Present Residential Address
  3. National Insurance Number
  4. Date of Birth
  5. Telephone Number
  6. Email Address
  7. Type and Nature of your business
  8. Date when you started as Self-Employed
  9. Business Address i.e. Registered Office Address
  10. Business Telephone Number.

To register for Self-Assessment with the HMRC, you need to fill up HMRC SA1 form and send the signed copy of it to the address mentioned on the form. It will take approx 6-8 weeks for you to receive your UTR number and activation code. Once you receive your activation code, you would require to activate your registration with HMRC within 28 days of receiving the code. You would need your activation code and UTR number to login to the HMRC website for further steps. Once logged in, you can navigate through various services listed on the HMRC website and select/choose the one which suits your requirement.

HMRC Online Services

In case you missed the date i.e. if you start the activation process on 29th day of receiving the activation code, you have to start the entire process all over again starting from filling up SA1 form.

Apart from applying online, there are two more ways through which you can register with HMRC as Self-Employed, which are:

  1. You can apply to HMRC on paper by filling CWF1 form. You would require National Insurance Number as well before you start with the process.

    Self Employment

  2. You can call on the Newly Self-Employed Helpline number which is 0845 9154 515.

The process of applying for UTR number is free of charge and can be availed by anyone. It is important to have your UTR number and it is equally important to keep it safely because you would need it for filing Self-Assessment Tax Payments and returns, for payment of Corporation Tax etc. If you lose your UTR number, you have to go through series of steps and identity validation checks before you have it and in this process you might miss your tax payment and filing deadlines.

Applying For UTR Number For Your Private Limited Company:

Like individuals, Private Limited Company also has Unique Transaction Reference Number which is personal and private to them and comprises of 10 digits and can be found on HMRC official documents for example CT603, Notice to deliver a company tax return form etc.

When you form a company (Private Limited), you have to incorporate it under Companies House ( in charge of all incorporated companies in UK), which will in return inform to HMRC. You don't need to inform to contact HMRC at this point of time.

Once incorporated with the Companies House, HMRC will send its first official letter i.e. Form CT41G at your registered office address with its UTR Number. Till such time you receive UTR number of your company, you cannot register with HMRC for payment of Corporation Tax.

HMRC Online Services

After your UTR number is received, you will need it in future for:

  1. Any correspondence with HMRC about Corporation Tax.
  2. Using HMRC commercial software for sending Company Tax Return.

Once you have received your company's UTR number, you must contact HMRC to register as "Active For Corporation Tax" with following information:

  1. Date when you started trading with your business.
  2. Name of the company and its registration number (CRN).
  3. Main address where business activities are conducted.
  4. Type of business activities which will be carried out.
  5. Date when your annual accounts will be made up to.

Based on above information, HMRC will work out your accounting period and deadlines for paying corporation tax and filing tax returns.

Can You Use Your UTR Number As Your Company's UTR Number:

Perosnal UTR Number is different from company's UTR number because as soon as you incorporate your business with Companies House, it becomes a separate legal entity and two entities cannot have same UTR number.Individual UTR number can only be used by you to pay/file your Self-Assessment Tax Returns, to pay income tax and NIC on your personal income.

UTR Number

What If I Have Lost MY UTR Number ?

Your UTR number is used by HMRC to identify you and your tax records and you would need to have this number to pay your Self-Assessment Tax Returns or Corporation Tax on time and within deadline. While there are certain other factors which can prevent you to do so, losing your UTR number will have a major consequence.

Before you start approaching concerned authorities for retreiving your UTR number, you can try looking for it on various documents/correspondence received from HMRC, including:

  1. Tax Return – Form SA100
  2. Notice to complete a tax return – Form SA316
  3. Statement of Account
  4. Welcome to Self-Assessment Letter (SA250)
  5. Payment Reminders

Lost UTR Number

Depending on the forms you have used, you can find your UTR number mentioned next to these headings:

  1. Tax Reference
  2. UTR
  3. Official Use

So, you have ransacked your place trying to find one of the above mentioned documents and realize that you have lost your UTR number.In this case, your best option is to contact HMRC directly on their Helpline Number 0300 200 3310 or you can contact your local tax office. Officer at local tax office would require certain information related to your tax history for him to send you the reminder of your UTR number.

HMRC Helpline Number

After contacting HMRC you have to go through their series of validation checks and once your identity is comfirmed, they will send your UTR number to you by post in 7 working days. So in case you are already running behind deadline of tax filing, you have to pay late filing penalties along with due taxes.

As they say, there is bright side to everything. In this case to save yourself from the hassle of remembering your UTR number, you can appoint an agent/accountant who does this for you and acts on your behalf when it comes to your tax affairs. However, in case, if he looses your UTR number, he would need a formal authorization letter from you to contact HMRC for your lost UTR number and thus he has to go through same validation checks by HMRC for his identity validation. HMRC will take 7 days to send your UTR number in this case as well.


So you have started your venture and are done with all legal and official formalities and documentations. Now comes the major task of keeping a track of all major and minor deadlines and safe custody of your tax related documents with your UTR and other important details.

You can very well do this all by yourself, however keeping a thorough track of accounting guidelines, changing taxation policies and most importantly of deadlines is an uphill task and as they say in your business do what you love and outsource the rest.

It needs no mention that outsourcing has its own benefits and when you get an opportunity to hire services of a firm as reliable as DNS Accountants, it only double up the already existing benefits.Started in year 2002, DNS Accountants are not only a trusted brand but also have years of domain knowledge. They provide accounting and taxation services to self-employed individuals and to owner managed businesses. Their clients vouch for their professionalism and their guidance in making right decisions about the business and keeping a thorough track of all major as well as minor deadlines so that you file your accounts, tax payments and returns well ahead of declared deadlines. Their expert team of Chartered Accountants(CAs) and ACAs have made the otherwise tedious task of keeping pace with the ever-changing government policies and rules easy. They are specialist of taxation and bookkeeping services that helps proprietor oversaw business to deal with their records and duty commitments. The firm has a solid reputation of supporting individuals with lost UTR number and national insurance number. DNS Accountants takes responsibility of entire taxation and accounting need of the business and their services comes at a very nominal price. Apart from the taxation, you can utilize them for accounting, financial records management as well.

Click here for Review

(Overall Score 4.0 /5 Based on 1205 rating)

Related Post

Capital Gains Tax on gold and silver investments in UKCapital Gains Tax on gold and silver investments in UK
Tax on currency trading or Forex gains or binary optionsTax on currency trading or Forex gains or binary options
Stamp Duty Reduction for First Time BuyerStamp Duty Reduction for First Time Buyer
Selling on Amazon UK - Tax Implications & Accounting MistakesSelling on Amazon UK - Tax Implications & Accounting Mistakes
First Time Home Buyers in UK - An Essential GuideFirst Time Home Buyers in UK - An Essential Guide
DNS Accountants Accountants and Advisors Award Winning Accountants

Trending pages

DNS Associates British Accountancy Award
Vouched For DNS Associaes

Other Locations

DNS Accountants Blog

HMRC Offices

Share this post