How do I find my UTR number in the UK

How do I find my UTR number in the UK?

If you are self-employed, a sole trader, a landlord, a company director, a freelancer, a partner in a business partnership, or anyone who needs to file a Self Assessment tax return, you may be asked for your UTR number. UTR stands for Unique Taxpayer Reference. It is a tax reference issued by HMRC and is used to identify your personal Self Assessment record or, in the case of a limited company, the company’s tax record.

The quickest way to find your UTR number in the UK is to check your HMRC online account, the HMRC app, previous Self Assessment tax returns, HMRC letters, payment reminders, notices to file a tax return, or your original Self Assessment registration letter. If you run a limited company, the company UTR is usually shown on Corporation Tax letters sent by HMRC to the company’s registered office address. If you cannot find it anywhere, you can contact HMRC, but they will need to confirm your identity before helping you.

A UTR is usually 10 digits long. In some places, it may be shown with an extra letter at the end, but the main part people usually need is the 10-digit reference. It may appear on documents as “UTR”, “Unique Taxpayer Reference”, “tax reference”, or “Self Assessment reference”. Because the wording can vary, it is easy to miss, especially if you are looking through older letters or downloaded tax documents.

What is a UTR number?

A UTR number is a unique reference that HMRC uses to identify a taxpayer. For individuals, it is mainly linked to Self Assessment. For companies, it is linked to Corporation Tax. The number helps HMRC match tax returns, payments, records, and correspondence to the right person or business.

You normally receive a UTR after registering for Self Assessment or after setting up a limited company. Sole traders, freelancers, landlords, and people with untaxed income often need one because they may have to submit a Self Assessment tax return. Limited companies receive a company UTR from HMRC after incorporation, and that UTR is used for Corporation Tax matters.

Your UTR is not the same as your National Insurance number, VAT number, company registration number, PAYE reference, or Government Gateway user ID. These are all different identifiers used for different purposes. A National Insurance number identifies you for personal tax and benefits records. A VAT number is only issued if you are VAT registered. A company registration number is issued by Companies House when a company is incorporated. A Government Gateway user ID is used to sign in to online services. Your UTR is specifically a tax reference used by HMRC.

Where can I find my personal UTR number?

If you are an individual, sole trader, freelancer, landlord, or someone filing a Self Assessment tax return, you should first check your HMRC online account. Sign in to your Personal Tax Account using your Government Gateway details and look for the Self Assessment section. If your account is linked correctly and you have already been issued a UTR, it should be visible there.

You can also check the HMRC app. The app can show your tax details, including your UTR if one has been issued to you. This is often one of the fastest options because you can access it from your phone without searching through old letters or paperwork.

If you prefer to search through documents, look for your UTR on previous Self Assessment tax returns, tax calculations, statements of account, payment reminders, notices to file a return, and any Self Assessment welcome letters from HMRC. It may also appear on older HMRC correspondence relating to tax returns or payments.

A useful place to check is your original Self Assessment registration letter. Many people receive a letter after registering, and the UTR is usually included. If you registered years ago, you may have filed it away with your tax records, scanned it into a cloud folder, or given a copy to your accountant.

Where can I find my company UTR number?

If you run a limited company, the company has its own UTR. This is different from your personal UTR. Even if you are the only director and shareholder, your company is a separate legal entity, so it has its own tax reference for Corporation Tax.

The company UTR is usually shown on HMRC Corporation Tax letters. These letters are normally sent to the company’s registered office address after the company is formed. If you used an accountant, formation agent, or virtual office address when setting up the company, check whether the letter was sent there.

You may find the company UTR on Corporation Tax reminders, notices to deliver a Company Tax Return, statements, or other HMRC letters addressed to the company. It will not be the same as your Companies House company number. Your company number is public and appears on the Companies House register, but your company UTR is a private HMRC reference and should be handled carefully.

If your company was recently incorporated and you have not received the UTR yet, check that the registered office address is correct. If the company was set up by a formation agent, the first HMRC letters may have gone to the registered office used during incorporation.

How to find your UTR number online

To find your personal UTR online, sign in to your HMRC Personal Tax Account. Use the Government Gateway user ID and password linked to your tax account. Once signed in, look for Self Assessment. If you are registered and your account is properly connected, your UTR should appear in that area.

If you use the HMRC app, sign in and check the Self Assessment or tax details section. The app is often the simplest route for people who have already set up online access. It can save time because you do not need to wait for a letter or call HMRC.

If you cannot see Self Assessment in your online account, it may mean your Self Assessment account is not linked to your Government Gateway profile, you have not registered yet, or you are using the wrong sign-in details. Some people have more than one Government Gateway user ID, especially if they created separate accounts for personal tax, business tax, VAT, PAYE, or a previous business.

If you have multiple Government Gateway accounts, try to work out which one was used when you registered for Self Assessment. Search your email inbox for messages from Government Gateway or HMRC, and check whether you saved the user ID in a password manager. If you still cannot access the right account, you may need to recover your sign-in details or contact HMRC for help.

How to find your UTR number on HMRC letters

Many people find their UTR faster by checking HMRC letters rather than trying to recover online sign-in details. Look for letters about Self Assessment, tax returns, tax payments, penalties, statements of account, or reminders. The UTR is usually near the top of the letter, often close to your name, address, and the date.

For personal Self Assessment, the UTR may appear on a “notice to file a tax return”, a statement showing tax due, a payment reminder, or your original registration confirmation. It may be labelled as a tax reference or Self Assessment reference rather than clearly saying UTR.

For a limited company, check Corporation Tax letters. The company UTR is usually shown on official HMRC company tax correspondence. Make sure the letter is addressed to the company, not to you personally. This matters because a personal UTR and company UTR are not interchangeable.

If you keep digital records, search your computer, email, cloud storage, or document management system for terms such as “UTR”, “Self Assessment”, “tax reference”, “HMRC”, “SA250”, “Corporation Tax”, or “notice to file”. If you use an accountant, they may have a copy of the relevant HMRC letter or tax return in their client portal.

Can I find my UTR number on a tax return?

Yes, if you have submitted a Self Assessment tax return before, your UTR should appear on the return or related filing documents. If you downloaded a copy of your tax return from HMRC software, accounting software, or your accountant’s portal, open the PDF and check the first pages. The UTR is often displayed near your personal details.

You may also find it on tax calculations, statements of account, and payment summaries. If an accountant submitted your tax return, ask them for a copy of the return or confirmation page. They should be able to tell you the UTR they used for your Self Assessment record.

However, take care if you have both personal and company tax records. A director may have a personal Self Assessment UTR and a company UTR. These are different references used for different tax accounts. If you are filing a personal tax return, use your personal UTR. If you are dealing with Corporation Tax for a company, use the company UTR.

Can I find my UTR number on an invoice?

In most cases, your UTR number should not be needed on your customer invoices. A standard UK invoice usually includes details such as your business name, address, invoice number, invoice date, description of goods or services, amounts charged, payment terms, and bank details. If you are VAT registered, your VAT invoices also need your VAT registration number and VAT information. Your UTR is a private tax reference, not a normal invoice detail.

Some clients, agencies, or construction industry contractors may ask for your UTR to verify your tax status, set you up as a supplier, or deal with Construction Industry Scheme matters. Even then, it is usually better to provide it through a secure onboarding form or direct communication rather than placing it on every invoice.

If you use Invoice24, you can create professional invoices without needing to display your UTR unnecessarily. Invoice24 helps you include the details that normally belong on an invoice, such as your business information, customer details, invoice numbers, line items, totals, payment terms, and notes. Keeping your invoicing clean and consistent makes it easier to match income to your tax records when it is time to complete your Self Assessment or send information to your accountant.

What should I do if I have lost my UTR number?

If you have lost your UTR number, start with the quickest options: your HMRC online account, the HMRC app, and your old HMRC letters. These are usually faster than contacting HMRC. Check both paper and digital records, including emails, downloads, accounting folders, and accountant portals.

If you still cannot find it, contact HMRC. They will need to verify your identity before giving help. For security reasons, HMRC may not simply read the UTR out without checks, and in some situations they may send information by post to the address they hold for you or your company.

If your address has changed, make sure HMRC has the correct details. An old address can delay access to important tax information. This is especially important for limited companies, where letters may go to the registered office address rather than your home or trading address.

If you use an accountant, ask them as well. Accountants often keep the UTR in their tax software or client records because they need it to file returns, submit authorisations, or communicate with HMRC. Make sure you are asking for the right UTR: personal Self Assessment, partnership, or company Corporation Tax.

What if I do not have a UTR number yet?

If you do not have a UTR yet, you may need to register for Self Assessment or, if you have set up a limited company, wait for HMRC to issue the company UTR. Individuals usually receive a UTR after registering for Self Assessment. Limited companies usually receive a company UTR after incorporation.

You may need to register for Self Assessment if you are self-employed as a sole trader, have untaxed income, receive rental income, earn money from freelance work, have certain investment income, are a partner in a business partnership, or otherwise need to file a tax return. Not everyone needs Self Assessment, so it is sensible to check your situation before registering.

If you are newly self-employed, you normally register with HMRC as a sole trader for Self Assessment. After registration, HMRC issues a UTR. You then use that UTR to file your tax return, make payments, and manage Self Assessment correspondence.

If you form a limited company, HMRC should send the company UTR to the company’s registered office. You will use it for Corporation Tax, not for your personal Self Assessment tax return. If you are also required to file a personal Self Assessment tax return as a director or because of other income, you may have a separate personal UTR as well.

How long does it take to get a UTR number?

After registering for Self Assessment, HMRC usually sends your UTR by post. It commonly takes around a couple of weeks, and it can take longer if you are overseas or if HMRC needs more information. Because it is sent by post, you should not leave registration until the last minute before a filing deadline.

If you need to file a tax return, keep in mind that getting the UTR is only one part of the process. You also need enough time to gather income records, expenses, invoices, bank statements, pension information, employment income details, and any other relevant tax documents. If you are using software or an accountant, you may also need time to set up authorisation and online access.

Invoice24 can help with the record-keeping side by keeping your invoices organised throughout the year. When your invoice numbers, customer records, dates, totals, and payment statuses are easy to review, preparing your Self Assessment figures becomes much less stressful. Even if you use an accountant, clear invoice records can reduce back-and-forth questions and help them understand your income more quickly.

Is my UTR number the same as my National Insurance number?

No, your UTR is not the same as your National Insurance number. Your National Insurance number is a personal identifier used for tax, National Insurance contributions, benefits, and state pension records. Your UTR is a separate HMRC tax reference used mainly for Self Assessment or company tax records.

A National Insurance number is made up of letters and numbers, while a UTR is usually 10 digits. You may need both when dealing with HMRC, but they are not interchangeable. For example, when registering for Self Assessment, HMRC may use your National Insurance number to identify you, but once your Self Assessment record is created, your UTR is used for tax return filing and payments.

It is also not the same as your Government Gateway user ID. Your Government Gateway user ID helps you sign in to online services. Your UTR identifies your tax record. You can lose access to one without losing the other, which is why some people can have a UTR but still need to recover their online login details.

Is my UTR number the same as my VAT number?

No, your UTR is different from your VAT number. A VAT number is issued when a business registers for VAT. It appears on VAT invoices and is used for VAT returns. A UTR is issued by HMRC for Self Assessment or company tax purposes and is generally not something you put on ordinary invoices.

If you are VAT registered, your invoices normally need to show your VAT registration number and the required VAT information. Invoice24 can help you produce invoices with the right structure, including invoice numbers, customer details, line items, tax information, totals, and payment details. Your UTR, however, should usually remain part of your private tax records unless a specific organisation legitimately asks for it.

Some new business owners confuse the two because both come from HMRC and both relate to tax. The simplest way to remember the difference is this: your VAT number is for VAT invoices and VAT returns, while your UTR is for Self Assessment, Corporation Tax, and HMRC tax identification.

Do sole traders need a UTR number?

Yes, sole traders usually need a UTR if they are registered for Self Assessment. When you work for yourself, HMRC needs a way to identify your tax record, process your tax return, and match payments to your account. Your UTR is the reference used for this.

As a sole trader, you may need to include your UTR when filing your Self Assessment tax return, speaking to HMRC, authorising an accountant, or making certain tax payments. You do not usually need to print it on invoices to customers. Instead, your invoices should clearly show your trading name or business name, your address, the customer’s details, a unique invoice number, the date, what you supplied, how much is due, and how the customer should pay.

Using Invoice24 can make this easier because it gives you a simple way to create and organise invoices from the start. Instead of making a new invoice from scratch each time, you can keep your invoice format consistent, save customer information, track what has been paid, and keep records that help you calculate business income.

Do freelancers need a UTR number?

Freelancers often need a UTR because freelance income is commonly reported through Self Assessment. If your freelance income is taxable and not fully taxed at source, HMRC may require you to register and file a tax return.

Your UTR is important when submitting your tax return or dealing with HMRC, but it is not usually part of your public-facing freelance brand. Clients normally need your invoice details, payment terms, and any VAT information if you are VAT registered. They do not usually need your UTR unless there is a specific tax onboarding reason.

For freelancers, good invoicing habits are just as important as finding your UTR. Use clear invoice numbers, accurate dates, proper descriptions, and consistent payment terms. Invoice24 is designed for this kind of workflow, helping freelancers send invoices, keep customer details in order, and track outstanding payments. When tax season arrives, your invoices can help show what you earned and when you earned it.

Do landlords need a UTR number?

Landlords may need a UTR if they have to file a Self Assessment tax return to report rental income. If you already have a UTR from previous Self Assessment registration, you should use that same personal UTR for your Self Assessment record. You do not normally get a different personal UTR just because you start receiving rental income.

If you cannot find your UTR, check your Personal Tax Account, HMRC app, previous tax returns, property income tax documents, and HMRC letters. If an accountant has previously prepared your property income pages, they may also have the UTR on file.

Landlords should keep accurate records of rent received, allowable expenses, mortgage interest information, agent fees, repairs, insurance, and other property-related documents. While Invoice24 is especially useful for invoicing customers and clients, the same principle applies: organised records make tax reporting easier and reduce the chance of missing important figures.

Do partnerships need a UTR number?

Business partnerships can have a partnership UTR, and individual partners may also have their own personal UTRs. The partnership UTR is used for the partnership tax return. Each partner’s personal UTR is used for their own Self Assessment tax return.

This is a common source of confusion. If you are asked for a UTR, check whether the request is about the partnership or about you personally. A partnership tax return needs the partnership reference. Your own tax return needs your personal reference. Using the wrong one can cause delays or mismatched records.

If you are part of a partnership, keep copies of partnership registration documents, HMRC letters, tax return submissions, profit-sharing records, and invoices. Invoice24 can help the business create consistent invoices and maintain clear sales records, which can then support the partnership accounts and tax return process.

Should I share my UTR number?

You should treat your UTR as sensitive tax information. It is not as secret as a password, but it is still a private reference connected to your HMRC record. Share it only when there is a legitimate reason, such as with HMRC, your accountant, tax adviser, business partner, authorised agent, or an organisation that genuinely needs it for tax verification.

Be careful if someone asks for your UTR unexpectedly by email, text, or phone. Scammers may pretend to be HMRC, a client, or a business service provider. Do not send your UTR together with other personal information unless you are confident the request is genuine.

It is also sensible not to place your UTR on your website, public documents, or standard invoices. If a client asks for it, ask why they need it and provide it through a secure channel if the request is legitimate. For normal invoicing, use your business details, invoice number, amounts, and payment information instead.

Why a client might ask for your UTR number

A client may ask for your UTR if they are setting you up as a supplier, checking your self-employed status, or dealing with tax reporting requirements. In construction, contractors may ask subcontractors for a UTR because it can be relevant to Construction Industry Scheme verification. Agencies may also ask for tax details when onboarding freelancers or contractors.

However, having a UTR does not automatically prove that someone is genuinely self-employed for every legal or tax purpose. Employment status depends on the working relationship, control, substitution, mutuality of obligation, financial risk, and other factors. A UTR simply shows that HMRC has issued a tax reference.

If you are a freelancer or sole trader, it is useful to keep your UTR stored securely so you can provide it when genuinely needed. At the same time, keep your invoices professional and focused on the information clients actually need to pay you. Invoice24 helps with that by making invoice creation simple, clear, and organised.

How to keep your UTR and tax records organised

Once you find your UTR, store it somewhere secure and easy to access. You might keep it in a password manager, secure business records folder, encrypted notes app, or accountant’s client portal. Avoid saving it in a random email draft, public cloud folder, or unprotected spreadsheet.

It is also a good idea to save copies of key HMRC documents, including your Self Assessment registration letter, notices to file, tax return submissions, payment confirmations, and statements. Name the files clearly so you can find them again. For example, you could use file names such as “HMRC Self Assessment UTR letter”, “Tax return 2025-26”, or “Corporation Tax UTR letter”.

Your invoices should be just as organised. Keep a clear sequence of invoice numbers and make sure every invoice has a date, customer, description, amount, and payment status. Invoice24 helps you create, manage, and track invoices in one place, which means you are less likely to lose records when preparing your accounts or answering questions from your accountant.

Common mistakes when looking for a UTR number

One common mistake is looking for the wrong number. People often confuse their UTR with their National Insurance number, VAT number, PAYE reference, company number, or Government Gateway user ID. If the number is not 10 digits, it may not be the UTR you need.

Another mistake is using a company UTR for a personal tax return, or a personal UTR for Corporation Tax. If you run a limited company, keep your personal and company tax records separate. The company’s UTR belongs to the company, while your personal UTR belongs to you as an individual taxpayer.

A third mistake is assuming that a UTR appears on every business document. It usually does not. You may not find it on ordinary customer invoices, bank statements, Companies House records, or VAT certificates. The best places to check are HMRC tax accounts, HMRC letters, tax returns, and official tax correspondence.

Another common issue is using the wrong online account. If you have more than one Government Gateway ID, you might sign in and think your UTR is missing, when in reality you are in a different account. Check old emails, saved login details, or accountant records to work out which login is connected to Self Assessment.

What if my UTR number is not recognised?

If your UTR is not recognised by an online service, check that you entered it correctly. A UTR is usually 10 digits, and a simple typing error can cause a mismatch. Remove spaces unless the form specifically allows them, and make sure you have not entered your National Insurance number, VAT number, or company number by mistake.

If you copied the UTR from a letter, check whether the document was personal, company, or partnership correspondence. You may be using the wrong tax reference for the service you are trying to access.

If the UTR still is not recognised, your online account may not be linked correctly, the tax service may not be activated, or HMRC’s records may need updating. You may need to sign in to the correct Government Gateway account, add Self Assessment to your account, recover old login details, or contact HMRC for support.

Can an accountant find my UTR number?

If you have used an accountant before, they may already have your UTR. Accountants need UTRs to file Self Assessment tax returns, company tax returns, partnership returns, and authorisation requests. They may have it saved in their tax software, engagement records, or previous submission documents.

Ask your accountant whether they hold your personal UTR, company UTR, partnership UTR, or all of them. Be clear about which one you need. For example, if you are completing your own Self Assessment return, ask for your personal UTR. If you are setting up Corporation Tax access for a limited company, ask for the company UTR.

Even if your accountant has your UTR, it is still sensible to keep your own secure copy. You may need it when changing accountants, registering for software, contacting HMRC, applying for finance, or checking your own tax account.

How Invoice24 can help once you have your UTR

Finding your UTR is only one part of staying organised as a UK freelancer, sole trader, landlord, contractor, or small business owner. Once you know your tax reference, the next challenge is keeping accurate income records so your tax return is easier to prepare.

Invoice24 is a free invoice app designed to help you create professional invoices quickly. You can use it to add your business details, enter customer information, describe the products or services supplied, set invoice dates and due dates, include payment terms, and keep track of what has been invoiced. This makes it easier to see your income and follow up on unpaid invoices.

For Self Assessment, clear invoice records can save a lot of time. Instead of searching through emails, messages, and bank transactions at the end of the tax year, you can refer to your organised invoice history. This can help you calculate turnover, identify unpaid invoices, answer accountant questions, and reduce the stress of preparing your return.

Invoice24 also helps keep your invoices consistent. Consistency matters because confusing invoice numbers, missing dates, or unclear descriptions can create problems later. A well-organised invoice system makes your business look professional to clients and makes your own records easier to understand.

Do I need my UTR before sending invoices?

You do not normally need to wait for your UTR before sending invoices to clients. If you have started trading, you can usually invoice customers using your business name, address, invoice number, date, description, amount, and payment details. If you are VAT registered, you should include the required VAT information. Your UTR is not normally required on the invoice itself.

However, you should not ignore Self Assessment registration. If you are self-employed or have taxable untaxed income, you may need to register with HMRC and obtain a UTR in time to file your tax return. Sending invoices and getting paid means you should also be thinking about records, tax deadlines, and business organisation from the beginning.

Using Invoice24 from your first invoice can help you avoid messy records later. You can create invoices properly, keep track of clients, and build a reliable record of your sales. When your UTR arrives and it is time to deal with your tax return, you will already have a cleaner record of your income.

UTR number checklist

If you are trying to find your UTR number today, start by checking your HMRC Personal Tax Account and the HMRC app. Then search your HMRC letters, previous Self Assessment tax returns, notices to file, statements, and payment reminders. If you run a limited company, check Corporation Tax letters sent to the company’s registered office. If an accountant has helped you before, ask them which UTRs they hold for you.

Make sure you are looking for the right reference. A personal UTR is for your individual Self Assessment record. A company UTR is for Corporation Tax. A partnership UTR is for the partnership tax return. A VAT number, National Insurance number, company number, and Government Gateway ID are all different.

If you cannot find the UTR, contact HMRC and be ready to verify your identity. If you do not have one yet, register for the relevant tax service and allow enough time for HMRC to issue it. Once you have found it, store it securely and keep your tax records organised.

Final thoughts

Your UTR number is an important part of dealing with HMRC in the UK, especially if you file a Self Assessment tax return or run a limited company. The easiest places to find it are your HMRC online account, the HMRC app, old HMRC letters, previous tax returns, and official tax documents. If you have a limited company, remember that the company UTR is separate from your personal UTR.

Although your UTR is important, it is not usually something you need to put on invoices. For invoicing, focus on clear customer details, invoice numbers, dates, descriptions, payment terms, amounts, and VAT details if applicable. Invoice24 gives you the tools to create and manage those invoices for free, helping you stay organised throughout the year.

Once you find your UTR, keep it safe, keep your HMRC documents together, and maintain accurate invoice records. Good organisation makes tax returns easier, reduces stress around deadlines, and helps you run your business with more confidence.