How to Register as Self-Employed in the UK (2025)
Registering as self-employed is a big step to making your dreams of being your own boss a reality.
If you’ve been building your business so you can pave the way to full time self-employment, but feel a bit unsure where to start – I’ve got you.
This guide breaks it all down step by step, so you can get it done quickly and stress free.
No more Googling. No more overwhelm. Just a clear, step-by-step plan to start self-employment with confidence.
Download your FREE guide now and take the first step towards stress-free self-employment.
Friendly Disclaimer:
Whilst I am an accountant, I’m not your accountant. The information in this article is legally correct but it is for guidance and information purposes only. Everyone’s situation is different and unique so you’ll need to use your own best judgement when applying the advice that I give to your situation. If you are unsure or have a question be sure to contact a qualified professional because mistakes can result in penalties.
When to Register as Self-Employed in the UK
You’ll need to register with HMRC by 5 October following the end of the tax year (5 April) in which you started working for yourself or earned more than £1,000 under the trading income allowance.
For example:
- If you earned £2,000 during the tax year ending 5 April 2025, your deadline to register is 5 October 2025.
Tip:
The tax year in the UK runs from 6 April to 5 April each year. Mark your calendar to avoid missing deadlines!
What Is the £1,000 Trading Income Allowance?
The trading income allowance is a handy rule for anyone earning small amounts through self-employment.
It lets UK individuals earn up to £1,000 tax-free each tax year without needing to register as self employed or file a tax return to report it to HMRC.
This allowance is great if you’re testing a business idea or earning from a side hustle – you don’t have to use it though. For example if your expenses are more than £1,000 you might be better off registering and claiming them instead.
Looking for practical, no-nonsense guidance and support on your self-employment journey? The Self-Employed Club is here to help you with training, tools and support to launch and manage your solo business..without the overwhelm
How to Register as Self-Employed Online
Here’s what you need to do:
- Gather Your Information: Make sure you have your National Insurance Number and personal details ready.
- Go Online: Visit the HMRC website and register for Self-Assessment. You’ll create an account if you don’t already have one.
- Fill Out the Form: Follow the instructions to provide details about your business, including when you started trading.
- Get Your UTR Number: HMRC will send you a Unique Taxpayer Reference (UTR) number. Keep this safe—you’ll need it to file your tax returns.
- Set Up Your Records: Start tracking your income and expenses from day one to make tax time easier.
Tip:
A UTR number is a 10 digit number that HMC uses to identify you. It normally takes 15-21 days to get your UTR number, but you’ll find it quicker in the HMRC app. Once you have it, it means your registration is complete and you’re officially self-employed 🎉
FAQs: How to Register as Self-Employed in the UK (2025)
1. What Information Do You Need to Register as Self Employed?
You’ll need to share your personal details as well as information like your national insurance number, business start date and a brief description of what you do.
2. What is a Business Tax Account?
As part of the registration process, you’ll need to set up a business tax account on the .GOV website. You’ll need this to submit your application for self-employment, manage your business taxes and file tax returns online moving forward.
3. What If You Already have a Business Tax Account?
If you’ve been self-employed in the past you’ll be given the option to reactivate your old account.
4. What happens after I register as self-employed?
Once registered, HMRC will set up your Self-Assessment account, and you’ll receive a Unique Taxpayer Reference (UTR) number. You’ll then need to track your income and expenses, file a self-assessment tax return and pay any tax you owe.
5. Do I need a business bank account as a sole trader?
No, it’s not a legal requirement, but having a separate account for your business income and expenses makes it much easier to manage your finances.
6. What taxes do I need to pay as a self-employed person?
You’ll need to pay:
– Income Tax on your profits.
– National Insurance Contributions (NICs): Class 2 and/or Class 4 depending on your earnings.
– VAT: Only if your turnover exceeds £85,000 or you register voluntarily.
7. Can I claim expenses when I’m self-employed?
Yes, you can claim business expenses like office supplies, software subscriptions and travel costs, which reduce your taxable income.
9. Can I still register as self-employed if I’m working full-time?
Yes – many people start as self-employed alongside a full-time job. Just ensure you track your self-employed income separately and file a tax return.
What’s Next For Your Self Employed Journey?
A big congratulations—you’ve done it! 🎉You’re ready to launch your business and you’ve got all the business basics in place to start marketing and selling.
And don’t forget, you’re not alone in this journey! Join The Self-Employed Club for tips, tools, and a community of like-minded business owners who are cheering you on. Follow me on Instagram for daily inspiration, updates, and support as you grow your business.
Any Questions?
I’d love to help! If you have any questions about this topic, feel free to reach out on Instagram—I’m always happy to chat and support you on your self-employment journey!
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