Do I Need to Register as Self-Employed? £1,000 Rule (2026/27)

If you've started earning money on the side — whether freelancing, selling online, or offering services — you might be wondering whether you need to register as self-employed (sometimes called registering as a sole trader) with HMRC. The answer depends on how much you earn and how regularly you do it — and for most people, the deciding figure is the £1,000 trading allowance.

Do You Need to Register as Self-Employed?

You don't need to register as self-employed if your total trading income is £1,000 or less per tax year (2025/26 and 2026/27). This is called the trading allowance, and it means occasional small earnings are tax-free without any paperwork.

If you earn more than £1,000, you'll need to register for Self Assessment and file a tax return.

The £1,000 figure is your gross trading income — the total you receive before taking off any expenses — not your profit. For example, if Sarah earns £1,400 from dog walking in 2025/26 and spends £500 on equipment and travel, her profit is £900, but she still needs to register because her income is over £1,000.

Coming from April 2027: the government announced at the October 2026 Budget that the trading allowance — and the Self Assessment reporting threshold for trading income — will rise from £1,000 to £3,000 from 6 April 2027 (the 2027/28 tax year onwards), subject to legislation. The £1,000 limit still applies to 2025/26 and 2026/27, so if you started earning more than £1,000 this tax year, the 5 October 2027 registration deadline still applies to you.

What Counts as Self-Employment?

HMRC considers you to be "trading" (and therefore self-employed) if you regularly do any of the following to make a profit:

Sell goods or services
Make items to sell
Sell items online, at car boot sales, or markets
Earn commission from sales
Provide services for payment (consulting, tutoring, design work, etc.)

Key indicators of self-employment:

You're responsible for the success or failure of your work
You have multiple clients or customers
You decide when, where, and how you work
You provide your own equipment
You fix any unsatisfactory work in your own time
You charge a fixed price for your work
You can make a profit or loss

When You Don't Need to Register

You don't need to register for Self Assessment if all of the following apply:

Your trading income is £1,000 or less in the tax year
You have no other reason to file a tax return (like rental income or capital gains)
You're not in a partnership

Examples of income that might fall under the £1,000 allowance:

Occasional babysitting or pet-sitting
Selling handmade crafts at a few markets per year
One-off freelance projects
Hiring out personal equipment like tools or cameras

Even if you don't need to register, it's a good idea to keep records of your income in case HMRC ever asks.

When You Do Need to Register

You need to register for Self Assessment and tell HMRC you're self-employed if:

Your trading income is more than £1,000 in the tax year
You're a partner in a business partnership (whatever the income)
You have other income that requires a tax return (see below)

You may also choose to register even with trading income of £1,000 or less if:

You made a loss and want to claim it — for example, to set against future profits
Your profits are below the Small Profits Threshold (£6,845 in 2025/26) and you want to pay voluntary Class 2 National Insurance (£3.50 a week in 2025/26) to protect your State Pension record

Other Reasons You Might Need to File a Tax Return

Self-employment isn't the only trigger. You may also need to register for Self Assessment if, for example:

You have untaxed income over £2,500 (such as tips or commission not taxed through PAYE) — below £2,500, HMRC can usually collect the tax through your tax code instead
You have rental income over the £1,000 property allowance
You or your partner receive Child Benefit and either of you has adjusted net income over £60,000 (the High Income Child Benefit Charge applies between £60,000 and £80,000 from 2024/25). Some employees can now pay this charge through their PAYE tax code instead
You have capital gains to report

Having income over £150,000 taxed through PAYE is no longer, by itself, a reason to file — that rule was removed from the 2023/24 tax year onwards.

Registering for Self Assessment vs Registering as Self-Employed

These sound similar but aren't quite the same thing. Being self-employed means you need to file a Self Assessment return and have your National Insurance record set up for self-employment. Other people only need to file a return — for example, because of rental income, untaxed income or capital gains.

In September 2026, HMRC launched an improved online Self Assessment registration service for individuals, which works through your Personal Tax Account (you can sign in with Government Gateway or GOV.UK One Login). It pre-fills details HMRC already holds and lets you save and come back later. When you register, make sure you say you're self-employed, so your National Insurance record is set up correctly.

The paper-style forms still exist: CWF1 for self-employed people and SA1 for non-business reasons. Agents registering a client continue to use these.

Once registered as self-employed, you'll pay:

Class 4 National Insurance through your Self Assessment return — 6% on profits between £12,570 and £50,270, and 2% above £50,270 (2025/26) — and
Class 2 National Insurance, which since April 2024 is treated as paid automatically once your profits reach the Small Profits Threshold (£6,845 in 2025/26) — so most self-employed people no longer pay it separately. Below that threshold, paying it is voluntary.

The £1,000 Trading Allowance Explained

The trading allowance is a £1,000 tax-free allowance for casual or occasional trading income in the UK (2025/26 and 2026/27). If your income exceeds this threshold, it gives you two options:

Option 1: Use the allowance as a deduction Deduct £1,000 from your trading income instead of your actual expenses. This is simpler if your expenses are low.

Option 2: Claim actual expenses Deduct your real business expenses from your income. This is better if your expenses exceed £1,000.

You cannot use both — it's one or the other for each tax year.

Important: The trading allowance doesn't apply if your income comes from:

A company you control (or someone connected to you controls)
A partnership you're involved in
Your employer or your spouse's employer

When to Register: The 5 October Deadline

If you need to register, you should do so by 5 October following the end of the tax year in which you became self-employed.

When you started	Registration deadline
Between 6 April 2024 and 5 April 2025	5 October 2025
Between 6 April 2025 and 5 April 2026	5 October 2026
Between 6 April 2026 and 5 April 2027	5 October 2027

The deadline for anyone who started in the 2025/26 tax year was 5 October 2026. If you missed it, it's still worth registering as soon as possible — your 2025/26 return and any tax owed are due by 31 January 2027 (or 31 October 2026 for a paper return).

Making Tax Digital for Income Tax

From 6 April 2026, Making Tax Digital for Income Tax (MTD ITSA) is mandatory for self-employed individuals and landlords with qualifying income above £50,000. Qualifying income is your combined gross self-employment and property income, and HMRC checks it using your return from two years earlier:

MTD start date	Qualifying income over	Based on your return for
6 April 2026	£50,000	2024/25
6 April 2027	£30,000	2025/26
6 April 2028	£20,000	2026/27

If MTD applies to you, you'll need to:

Use HMRC-compatible software to keep digital records
Send quarterly income and expense updates to HMRC
Submit a final declaration instead of the traditional Self Assessment tax return

MTD doesn't change whether you need to register as self-employed — it changes how you report once registered. If your income is below the current MTD threshold, you can continue filing through Self Assessment as before.

What Happens If You Don't Register?

If you should have registered but didn't, HMRC can:

Charge a failure to notify penalty — a percentage of the tax that was unpaid because you didn't register
Charge interest on any unpaid tax
Open a compliance check into your tax affairs

For a non-deliberate failure, the penalty can be up to 30% of the unpaid tax. It can be reduced to 0% if you tell HMRC yourself within 12 months of the tax being due, but the minimum rises to 10% or more if you disclose later or only after HMRC contacts you. Deliberate failures carry higher penalties.

If you register late but pay all the tax owed by 31 January following the end of the tax year, there's usually no failure to notify penalty, because no tax is left unpaid. Separate late filing and late payment penalties can still apply if your return or payment is late.

How to Check If You Need to Register

HMRC provides a free online tool to help you decide:

Go to Check if you need to send a Self Assessment tax return
Answer questions about your income and circumstances
Get a clear answer on whether you need to register

The tool takes about 5 minutes and covers all types of income, not just self-employment.

Self-Employment vs Hobby

HMRC looks at your intention and behaviour to decide if you're running a business or pursuing a hobby:

Business (taxable)	Hobby (usually not taxable)
Regular sales with profit motive	Occasional sales, no profit focus
Organised record-keeping	Casual, irregular activity
Marketing and promotion	Sharing with friends/family
Reinvesting profits	Personal enjoyment primary goal

If you're genuinely just doing something for fun without trying to make a profit, it's probably a hobby. But if you're actively trying to earn money and doing it regularly, HMRC will likely consider it a business.

Next Steps

If you've determined you need to register:

Gather your information — You'll need your National Insurance number and details about your self-employment
Sign in to your Personal Tax Account using Government Gateway or GOV.UK One Login (you can create an account if you don't have one)
Register online through HMRC's Self Assessment registration service — see our step-by-step guide to registering for Self Assessment
Receive your UTR — With the online service, HMRC says your Unique Taxpayer Reference should appear in your online account within 72 hours. If you register by post or through an agent, it can take up to around 15 days. Find out more in what is a UTR number.

Frequently Asked Questions

What if I earn just over £1,000 — is it worth registering?

Yes, you need to register if your trading income exceeds £1,000. However, you can use the £1,000 trading allowance as a deduction instead of claiming expenses, which keeps things simple if your costs are low.

Can I be self-employed and employed at the same time?

Yes. Many people have a regular job and run a side business. You'd pay tax through PAYE on your employment income and through Self Assessment on your self-employment income.

How long does the registration process take?

Registering online usually takes around 15 minutes. Through HMRC's online registration service, your UTR (Unique Taxpayer Reference) should appear in your online account within 72 hours. Paper and agent registrations can take up to around 15 days, so it's worth registering well before you need to file.

Do I need to register if I sell things occasionally on eBay or Etsy?

If your total trading income is £1,000 or less per tax year, you don't need to register. If it exceeds £1,000, or you're selling regularly with the intention of making a profit, registration is likely needed.

How do I get a UTR number if I'm self-employed?

You get a UTR (Unique Taxpayer Reference) automatically when you register for Self Assessment as self-employed through HMRC's online service. With HMRC's online registration service, the 10-digit number should appear in your online account within 72 hours; paper or agent registrations can take up to around 15 days by post. You can't apply for a UTR separately — registering is how you get one.

This guide is for informational purposes only and does not constitute tax, legal, or financial advice. Tax rules change frequently. Always verify current requirements on GOV.UK or consult a qualified accountant for your specific situation.

Official Sources

Working for yourself - GOV.UK
Register for Self Assessment - GOV.UK
Tax-free allowances on property and trading income - GOV.UK
Check if you need to send a Self Assessment tax return - GOV.UK
Check if you're eligible for Making Tax Digital for Income Tax - GOV.UK
Improved Self Assessment registration service launched - GOV.UK
Rates and allowances: National Insurance contributions - GOV.UK
Compliance checks: penalties for failure to notify (CC/FS11) - GOV.UK
Income Tax: increasing the trading allowance - GOV.UK