In the UK, anyone who registers for Self Assessment typically the self-employed, freelancers, or company directors—receives a Unique Taxpayer Reference (UTR) number from HMRC. This 10-digit number is essential for submitting tax returns and managing your financial records with HMRC.
But what happens when you misplace it or forget where you stored it? Whether you’re preparing your first tax return or need it for official financial documents, retrieving your UTR number is a vital step and fortunately, it’s easier than it might seem.
This blog offers a clear, structured guide on how to retrieve your UTR number including a step-by-step walkthrough to ensure you recover it quickly and securely.
What Is a UTR Number in the UK?
A UTR (Unique Taxpayer Reference) is a 10-digit number issued by HMRC to identify individuals and businesses required to file Self Assessment tax returns. It functions like a tax ID and is used to track your tax submissions, correspondence, and payments with HMRC.
If you’re self-employed, in a business partnership, or earning untaxed income, this number is essential for filing returns, checking tax calculations, and avoiding penalties. Without your UTR, HMRC can’t process your tax information accurately.
Where Can You Usually Find Your UTR Number in the UK?
If you’ve already registered for Self Assessment, your UTR number will be on several official documents sent by HMRC. These include the “Welcome to Self Assessment” letter (SA250), past tax returns, payment reminders, or any official correspondence related to your tax account.
Your UTR is also visible online if you have a personal tax account with HMRC. Simply log in and check under the Self Assessment section. The number is typically written as a 10-digit code like 1234567890 or spaced as 12345 67890.
How Can You Retrieve a Lost UTR Number Online in the UK?
If you’ve misplaced your UTR number, retrieving it online is the quickest and most convenient method. You’ll need to access your personal tax account via HMRC’s Government Gateway.
Once logged in, navigate to the Self Assessment section, where your UTR will be clearly displayed. This process only takes a few minutes if your login credentials are valid. HMRC ensures the system is secure, so only verified users can access personal tax information.
What Should You Do If You Can’t Access Your Online HMRC Account?
Many people lose access to their HMRC account due to forgotten login details or inactive email addresses. In this situation, start by using HMRC’s account recovery tools. You can reset your password or recover your user ID if your contact details are still valid.
If those methods don’t work, you may need to create a new Government Gateway ID or call HMRC’s support line for help. In some cases, a verification code will be sent by post to confirm your identity before access is restored.
Can You Retrieve Your UTR Number by Contacting HMRC Directly?
Yes, HMRC offers support over the phone for individuals who cannot access their UTR online. The Self Assessment helpline (0300 200 3310) is open Monday to Friday, from 8am to 6pm.
When you call, you’ll be asked to confirm personal information such as your full name, National Insurance number, and address. After successful identity verification, HMRC will send your UTR number by post to the registered address on their system. This usually arrives within 7 to 10 working days.
What If You’re Newly Self-Employed and Haven’t Received a UTR Yet?
When you register as self-employed with HMRC, a UTR is generated and sent by post within 10 working days (or 21 days if you live abroad). If more time has passed and you haven’t received it, first confirm that your address is correct in HMRC’s system.
You can do this by calling the helpline or checking your Government Gateway account if you’ve already created one. It’s important to sort this before your first Self Assessment deadline to avoid penalties.
Is It Possible to Retrieve a UTR Number Without a Government Gateway ID?
You can still retrieve your UTR number even if you don’t have access to your Government Gateway. By contacting HMRC by phone or post, and verifying your identity, they’ll post your UTR to your registered address.
If you prefer postal communication, write a letter to HMRC including your name, date of birth, National Insurance number, and current address, requesting your UTR number. Send it to:
HMRC Self AssessmentBX9 1AS
United Kingdom.
What Are the Common Issues People Face When Retrieving Their UTR Number?
There are a few common problems people run into when trying to retrieve their UTR:
Forgotten Login Details
Many users forget their Government Gateway ID or password. While recovery options exist, they require up-to-date contact details linked to your HMRC account.
Outdated Address or Contact Information
If HMRC sends your UTR to an old address, it can lead to delays or security concerns. Always keep your address updated via your online account or by notifying HMRC directly.
Misunderstanding the Process
Some individuals expect HMRC to email UTR numbers, but for security reasons, they never do. UTRs are only available online or sent by post to verified addresses.
How Can You Keep Your UTR Number Safe for Future Use?
Once you’ve retrieved your UTR number, it’s important to store it securely. Keep it in your official tax documents folder and consider saving it in a password-protected digital file or encrypted storage.
Avoid writing your UTR number on publicly accessible documents, like invoices or websites. It’s a personal identifier, and protecting it helps safeguard your identity and financial information.
How Do You Retrieve Your UTR Number Step by Step?
Here’s a practical, step-by-step guide to help you recover your UTR number efficiently:
Step 1: Log in to Your HMRC Account
Visit the HMRC Personal Tax Account and sign in using your Government Gateway credentials. Use recovery tools if you’ve forgotten your login.
Step 2: Go to the Self Assessment Section
Once inside, look for the “Self Assessment” tab or section. Click it to view your tax details and return status.
Step 3: Locate Your UTR Number
Your UTR number will appear at the top of the Self Assessment summary page. It’s usually in the format K1234567890 or 1234567890K.
Step 4: Save It Securely
Note it down or save it digitally in a secure place, such as a password manager or encrypted folder.
Step 5: If You Can’t Log In, Call HMRC
If you cannot access your account, call HMRC at 0300 200 3310. After verifying your identity, they will post your UTR to your registered address.
Step 6: Wait for Postal Delivery
After the call, your UTR will typically arrive within 7–10 working days.
This process ensures your UTR is securely retrieved without compromising your personal data.
Quick Comparison – Online vs Offline UTR Retrieval Options
| Retrieval Method | Time Frame | Best For | Requirements |
| Online via HMRC Portal | Immediate | Most users with active logins | Government Gateway credentials |
| Phone Call to HMRC | 7–10 working days | Users without online access | Personal identity verification |
| Written Postal Request | Up to 3 weeks | Offline users | Letter with personal details |
Conclusion
Whether you’re self-employed, freelancing, or running a small business, knowing how to retrieve your UTR number is essential. With the steps outlined above, you can regain access to your UTR quickly either through HMRC’s secure online portal or by speaking directly with a representative.
Taking care of this now ensures you’re ready for tax season and avoids unnecessary delays or penalties. Once retrieved, store your UTR securely so you’re never caught off guard again.
FAQs About Retrieving UTR Number
Can I get my UTR number immediately?
Yes, through your HMRC personal tax account. If you use offline methods, it will take up to 10 working days.
Is it safe to store my UTR number digitally?
Yes, as long as it’s in a secure location like a password manager or encrypted file.
Will HMRC email me my UTR number?
No. For security reasons, HMRC does not send UTR numbers by email.
Do I need a UTR number if I’m not self-employed?
Only if you are required to file a Self Assessment for other untaxed income.
Can my accountant find my UTR number for me?
If they’ve filed returns for you before, they might have it. But they can’t request it directly from HMRC.
What if I’ve moved and didn’t receive the UTR letter?
Update your address with HMRC and request the letter to be resent.
How long does it take to get a UTR after registering?
Usually within 10 working days in the UK, or 21 days if you’re abroad.