How to Register as a Sole Trader with HMRC UK: Step by Step 2026
Setting up as a sole trader in the UK is one of the quickest and cheapest ways to start your own business. This guide walks you through exactly how to register with HM Revenue and Customs (HMRC) in 2026, from start to finish. The whole process takes about 15 minutes, costs nothing, and you can do it entirely online.
We’ll cover what you need to prepare, the exact steps to follow on the HMRC website, common mistakes to avoid, and answers to questions you might have. This covers precisely how to get yourself registered and ready to trade legally.
What You Need First
Before you register, gather these items. You won’t need all of them immediately, but having them ready makes the process smoother.
- Your National Insurance number (on your National Insurance card or payslip)
- Your date of birth
- Your postcode and full address
- Details of your business activity (what you’ll be doing)
- Your business start date
- A UK bank account in your name (you’ll need this eventually)
- Your Government Gateway user ID and password (or you’ll create one during registration)
You’ll also want to think about your business name. It doesn’t need to be registered at Companies House like a limited company, but you should check it’s not already taken as a trademark and isn’t too similar to established businesses in your field.
Make sure you’re actually eligible to be a sole trader. You can’t be one if you’re under 16, and certain professions have different rules. Most people running their own business, though, can become a sole trader without any issues.
Step-by-Step Registration Process
Step 1: Check Your Employment Status
Before you register, confirm you’re genuinely self-employed. HMRC has strict rules about this. If you’re leaving a job and starting your own thing, you’re likely self-employed. If you’re working for someone else but they’re calling you self-employed to dodge taxes, that’s not legitimate.
Use the HMRC Employment Status Indicator tool on GOV.UK if you’re unsure. It’s free and takes about five minutes. Answer honestly about how you’ll work, and you’ll get a status indicator to guide you.
If you’re truly self-employed, you can move forward to registration. If you’re employed but doing side work, you might need to register for Self Assessment anyway, but your status matters for tax purposes.
Step 2: Create or Access Your Government Gateway Account
You’ll need a Government Gateway account to register with HMRC online. Most people don’t have one already, so you’ll create it during the registration process. If you’ve used any government online services before, you might already have one.
Go to the main GOV.UK website and look for the “Register as a sole trader” tool. You’ll see a blue button labeled “Start now.” Click it. The system will check if you already have a Government Gateway account.
If you don’t have one, click “Create a new account” and follow the prompts. You’ll enter your email address, create a password, and set up two-factor authentication (this means you’ll get a code sent to your phone or email when you log in). This takes about two minutes.
Step 3: Log Into Your Government Gateway Account
Once your account is created, you’ll log in automatically. You’ll need your email address and password. HMRC will send you a verification code to prove it’s really you. Check your email (including spam) and enter the code. You might get a code sent to your phone instead, depending on how you set up two-factor authentication.
You’re now in the HMRC self-assessment registration service. You’ll see a page that says “Register for Self Assessment as a sole trader.” This is exactly where you want to be.
Step 4: Tell HMRC About Your Business
The system now asks you a series of straightforward questions. Answer them carefully because you can’t easily change them afterward. Here’s what they’ll ask:
- Your full name as it appears on official documents
- Your date of birth
- Your National Insurance number
- Your address (make sure it’s current)
- Whether you live in the UK
These questions are simple. Just match what’s on your National Insurance card or passport. Don’t use nicknames or shortened versions of your name.
Step 5: Enter Your Business Details
Now the form gets to what matters. You’ll enter information about your business. The key fields are:
- Your business name (can be your own name or a trading name, like “Sarah’s Cleaning Services”)
- What your business does (your trade description)
- When your business started (the date you began working or plan to begin)
- Whether you expect to make more than £1,000 in turnover in the first year
For your business name, you can just use your own name if you want. That’s perfectly legal and means you’re a sole trader trading under your personal name. If you want a business name (like “Digital Marketing Pro”), you can use that instead. You don’t need to register it anywhere special.
For the trade description, be honest and specific. “Plumber,” “Freelance Writer,” “Personal Training,” or “Web Design” are all fine. This helps HMRC understand what your business does and affects how they categorize your tax records.
Your start date matters. Use the date you actually started or plan to start trading. If you’ve already been working for clients, use the date of your first payment or first client contact.
Step 6: Choose Your Accounting Period
HMRC asks when you want your tax year to end. For most sole traders starting out, the default option works fine. You can choose April 5th (the standard UK tax year end) or pick a different date that suits your business.
If you’re in a seasonal business (like summer camps or Christmas shopping support), you might want your year to end at a quiet time. That makes accounting easier. For most people, though, April 5th is standard and simplest.
You can change this later if needed, so don’t stress about getting it perfect. Pick one and move on.
Step 7: Review Everything
Before you submit, the system shows you a summary of all the information you’ve entered. Read through it carefully. Check your name, address, business name, and start date are all correct.
If something’s wrong, you can go back and change it. The system has a “Back” button or you can select “Change” next to any field. Don’t skip this step. Wrong information now means hassle later when you submit tax returns.
Step 8: Complete Your Registration
Once everything looks right, click the button labeled “Submit” or “Confirm and send.” The exact wording might vary slightly, but it’ll be obvious which button to click. Your browser might show a confirmation message.
You’re now registered as a sole trader with HMRC. Congratulations. The system will show you a confirmation page with a reference number. Screenshot this or write it down. You’ll get a confirmation email within a few minutes to the email address you used for your Government Gateway account.
Step 9: Wait for Your Unique Taxpayer Reference
HMRC usually sends your Unique Taxpayer Reference (UTR) within a few days to two weeks. This is a ten-digit number that’s yours alone. You’ll need it for everything from here on, so keep it safe.
The UTR comes by post to your address. You might also see it in your Government Gateway account if you log back in. Don’t panic if you don’t get it immediately. HMRC sometimes takes a while during busy periods.
What Happens After Registration
Registration only gets you started. You’ve told HMRC you exist as a sole trader, but you still have obligations.
You must keep records of all your income and expenses. This is a legal requirement. You don’t need fancy accounting software. A spreadsheet works. Just track what you earn and what you spend on your business.
You’ll need to file a Self Assessment tax return each year. HMRC will send you a notice to file by post. The deadline is usually January 31st after the end of the tax year. Miss this and you face penalties.
If you’re making money, you’ll owe income tax and possibly National Insurance contributions. The amount depends on how much you earn. You might also need to register for VAT if your turnover goes above £85,000 per year (2024-25 threshold).
Open a business bank account soon after registering. It makes accounting easier and looks professional. Some banks require your UTR number, so wait until you have it if you want. You can start trading before you get it, though.
Common Mistakes People Make
People rush through registration and make errors that cause problems later. Here are the most common ones.
Using the wrong name. If you register under “Bob Smith” but your National Insurance is under “Robert Smith,” there’ll be mismatches. Always use the exact name that appears on your National Insurance documentation.
Getting your start date wrong. Don’t use a date you haven’t actually started yet. If you claim you started on January 1st but you’re only registering in March, HMRC will question why there’s a three-month gap. Use the actual date you started working or making money.
Leaving out important business details. If you describe your business vaguely (like “consulting”), HMRC might ask for clarification. Be specific enough that anyone reading it understands what you do, but you don’t need a paragraph. Three to five words is usually fine.
Registering when you’re not ready. Some people register but never actually start trading. That’s fine legally, but if you’re registered and not filing returns on time later, it creates problems. Only register when you’re genuinely about to start or have already started earning money.
Not keeping the confirmation reference. Write down or screenshot the reference number you get on the confirmation page. This helps HMRC find your application if there are questions. You might never need it, but it’s worth having.
Using a business name that’s already trademarked. It’s not illegal, but it’s unwise. Check the UK Intellectual Property Office website before you commit to a trading name. It only takes a few minutes and saves potential problems.
Troubleshooting Common Problems
I can’t access the Government Gateway registration page. The site sometimes has brief outages. Try again in an hour. Make sure you’re on the official GOV.UK site by typing it directly into your browser rather than clicking a link. Scams sometimes create fake government pages.
I’ve forgotten my Government Gateway password. Go to the login page and click “Forgotten your password?” Follow the prompts. You’ll verify your identity and create a new one. This usually takes five minutes.
I started my business before I knew I needed to register. No problem. Use your actual start date when you register, not today’s date. HMRC won’t penalize you for registering slightly late if it’s only been a few months. If it’s been years, you have a bigger problem, but you should still register immediately.
My confirmation email never arrived. Check your spam folder. If it’s genuinely not there after three days, log back into your Government Gateway account. You can see your registration status there. If it shows registered, you’re fine. You can still use your account to file returns even if you never get the email.
I registered but haven’t received my UTR. Wait at least two weeks before worrying. If you’ve waited more than three weeks, contact the HMRC Self Assessment helpline on 0300 200 3310 (UK) or +44 135 535 9022 (from abroad). They can check your status. You don’t need the UTR to start working, but you’ll need it to file your first tax return.
The system says I’m already registered. You might have registered before and forgotten. Try logging into your Government Gateway account and clicking “View your registration.” It’ll show your details. If you genuinely think there’s an error, contact HMRC. They can sort it out.
Questions People Ask
How much does it cost to register as a sole trader?
Nothing. Registration itself is completely free. You don’t pay HMRC anything to become a sole trader. However, you will eventually owe income tax on your profits, and you might want to use accounting software (some free, some paid) to track your finances. But the registration process costs zero pounds.
How long does registration take after I submit?
The online form takes about 10 to 15 minutes to fill out. Processing usually takes a few days to two weeks. You’ll get a confirmation immediately when you submit, and within a few days you’ll receive your Unique Taxpayer Reference in the post. You can start trading the moment you submit, even if you haven’t received your UTR yet.
Can I register as a sole trader if I’m not a UK citizen?
Yes, as long as you have the right to work in the UK. You’ll need a National Insurance number, which you can get if you’re eligible to work here. The registration process doesn’t care about your citizenship, only that you can legally work in the country. If you’re unsure about your status, check the UK government’s “Right to Work” guidance first.
What if I want to trade under a different name than my own?
You can. That’s called a “trading name” or “business name.” You can still register as a sole trader and use whatever name you want. For example, your name might be “John Williams” but you trade as “JW’s Plumbing Services.” Just put your trading name in the business name field during registration. You don’t need to register it anywhere official like you would with a limited company. You do need to mention your real name on invoices, though.
Conclusion
Registering as a sole trader with HMRC in 2026 is straightforward if you follow these steps. The whole process is free, takes about 15 minutes, and you can do it entirely online from your home.
The key is to enter your details accurately the first time. Double-check your name matches your National Insurance documentation, use your genuine business start date, and describe what you do clearly. Once you’ve submitted, you’ll get confirmation immediately and your UTR within a few weeks.
From that point, your job is to keep proper records, file your tax return on time, and pay what you owe. It’s manageable, especially if you set up simple systems from the start. You’re now a legitimate, legal business owner. That’s worth the 15 minutes of registration.