It’s my first time registering as self-employed!
If you haven’t registered as self-employed before, then follow these step-by-step instructions:
- Register online by creating a HMRC online account
- You’ll receive a user ID
- Log back into the HMRC online account, select “add a tax”, and then “Self Assessment”
- Select “Sole Trader” from the options: individual, sole trader, partnership, or trust
- Enter the date you started your self-employment
- Submit more details, including your National Insurance Number (here’s how to get one)
- Describe the work you do: “security guard”, “Uber driver”, “freelance designer”, etc
- Review and click “submit”
- You’ll get a letter with your Unique Taxpayer Reference (UTR) number by post
- You’ll also receive another letter within 10 working days with an activation code. You’ll need this code to activate your UTR
If you’ve sent a tax return before
The process is similar, but instead you will use the online CWF1 form.
Just use the same 10-digit unique taxpayer reference (UTR) number and HMRC login as last time.
If you work in the construction industry (CIS)
HMRC treats subcontractors working in construction (builders, painters, carpenters, etc.) differently.
Let HMRC know if you’re a construction worker and register for the Construction Industry Scheme (CIS). Construction workers who aren’t registered for CIS will pay 30% tax instead of 20%.
If you’re employed
There are some cases when employed people will also have to register as self-employed.
For example: If you’re employed but also have taxable income from self-employment, you’ll still need to register as self-employed. Although your employed wages are taxed through PAYE, you’ll still need to report this income on your tax return.
What to do after you’ve registered
Now you’ve successfully registered for Self Assessment, make sure you:
- Keep track of your invoices and receipts (just incase)
- Pay tax by completing a Self Assessment tax return by January 31st every year
- Pay Class 4 National Insurance contributions
- Register for VAT if you’re making £90,000 or more from self-employment
When registering for self-employment, you’re automatically enrolled into what is known as Payment on Accounts.
If you’re not quite sure how this works or why your first tax payment was 50% larger than expected, you can read more about this here or take a look below! For more details about how, when and why you need to register with HMRC as self-employed, check out our list of frequently asked questions and answers.

If you want to stop being self-employed
You will need to tell HMRC – here is how you do it. HMRC will still expect you to file a tax return otherwise.
Once you’re registered, you’re ready to file!
If you are unsure get your tax return sorted and filed by an accredited accountant such as Taxscouts. They’ll handle it all – no hassle and completely stress-free. Easy, online, and for a low, one-off fee.
(Please note we are not affiliated or associated with Taxscouts – other accountants are available.)
