How to Register as Self-Employed in the UK

Do You Need to Register as Self-Employed?

If you earn money outside of PAYE employment — from freelancing, selling services, driving for delivery platforms, or any other self-employed activity — you generally need to register as self-employed with HMRC once your income exceeds the trading allowance.

The key threshold: HMRC's trading allowance lets you earn up to £1,000 per tax year from self-employment (or other trading income) without needing to declare it or pay tax on it. Once your gross self-employment income exceeds £1,000 in a tax year, you need to register and submit a Self Assessment tax return.

Note: This guide is for informational purposes and reflects HMRC guidance as of the date shown. Tax rules can change. Always verify deadlines and thresholds at gov.uk/self-assessment before acting.

Step 1: Decide Your Business Structure

Most people starting out as freelancers or sole traders register as a sole trader. This is the simplest option:

• No company registration required
• You trade under your own name (or a business name)
• You are personally liable for business debts
• Income and expenses go on your Self Assessment tax return

The alternative — setting up a limited company — involves Companies House registration, a separate company bank account, and more complex accounting. It has tax advantages at higher income levels but adds overhead. Most beginners should start as a sole trader and reconsider once earnings are consistent.

Step 2: Create a Government Gateway Account

To register with HMRC, you need a Government Gateway account at www.gov.uk.

If you've ever filed a tax return, claimed tax credits, or accessed other HMRC services, you may already have one. Check your email for previous HMRC correspondence with a Government Gateway user ID.

If you don't have one:

1. Go to the HMRC online services login page
2. Select "Create sign-in details"
3. Provide your name, email address, and set a password
4. Verify your email address
5. Note your Government Gateway user ID — you'll need it repeatedly

Step 3: Register as Self-Employed

With your Government Gateway account set up:

1. Sign in at HMRC's online services
2. Navigate to "Self Assessment" and select "Register"
3. Complete the registration form — you'll need:
   • Your National Insurance number
   • Your date of birth
   • Your address
   • The nature of your self-employed work
   • The date you started self-employment

HMRC will send you a Unique Taxpayer Reference (UTR) by post, usually within 10 working days. This is a 10-digit number you'll use on all future tax correspondence and returns.

Step 4: Set Up for National Insurance

As a sole trader, you pay two types of National Insurance:

• Class 2 NIC: A flat rate (£3.45/week in 2024/25), paid if your profits exceed the Small Profits Threshold
• Class 4 NIC: A percentage of your profits above a threshold (currently 9% between the lower and upper profits limits, 2% above)

Class 2 and Class 4 NICs are calculated and paid through your Self Assessment return, not separately. You don't need to set up a separate direct debit.

Small Profits Threshold: If your self-employment profits are below this (£6,725 in 2024/25), you can choose whether to pay Class 2 NICs voluntarily to protect your National Insurance record for State Pension purposes.

Step 5: Understand Your Tax Deadlines

The UK tax year runs from 6 April to 5 April. Key deadlines:

Payment on account: HMRC usually requires you to pay your next year's estimated tax bill in advance (in two instalments) once your tax bill exceeds £1,000. This surprises many new self-employed people on their first January tax bill — budget for this.

What Records You Need to Keep

HMRC requires you to keep records of:

• All income (invoices, receipts, bank statements)
• All business expenses (receipts, bank statements)
• Business assets (equipment purchased for business use)

You must keep these records for at least 5 years after the 31 January submission deadline for the relevant tax year.

A simple spreadsheet works for most freelancers in the early stages. Free tools like Wave, or low-cost tools like FreeAgent (often free with certain business bank accounts), make this easier.

What You Can Claim as Business Expenses

Legitimate business expenses reduce your taxable profit. Common claimable expenses for freelancers:

• Professional subscriptions and software
• A portion of your home running costs if you work from home (using simplified expenses or actual costs)
• Equipment used for work (laptop, camera, microphone)
• Professional development and training directly related to your work
• Accountancy fees
• Business-specific insurance
• Marketing and advertising costs
• Travel to client meetings (not commuting)

Important: Personal expenses are not claimable. Mixed-use items (e.g. a laptop used for both work and personal use) can be proportionally claimed.

See HMRC's guidance on allowable expenses for the authoritative list.

Do You Need a Business Bank Account?

Legally, no — sole traders are not required to have a separate business bank account. However, mixing personal and business transactions in one account makes accounting significantly harder.

Several UK banks offer free business accounts for sole traders:

• Monzo Business — free tier, good integrations
• Starling Business — free, good accounting integrations
• ANNA Money — free tier with invoicing
• Tide — popular with freelancers

Using a dedicated business account (even a free one) makes your Self Assessment return much simpler.

When to Consider an Accountant

For most people earning under £30,000/year from self-employment, a simple spreadsheet and HMRC's free filing tools are sufficient. The cost of an accountant (typically £200–£600/year for a basic sole trader service) may not justify itself unless:

• Your financial situation is complex (income from multiple sources, investments, rental)
• You're considering incorporating to a limited company
• You've made errors on previous returns
• You simply prefer professional handling

Mid-tier accounting software like FreeAgent or QuickBooks can handle most of the complexity at lower cost than a full accountant.

Primary Sources

• GOV.UK: Set up as a sole trader
• GOV.UK: Self Assessment tax returns
• GOV.UK: Trading allowance
• GOV.UK: Expenses if you're self-employed
• GOV.UK: National Insurance if self-employed

Frequently Asked Questions

How quickly do I need to register after starting self-employment?

You must register by 5 October following the end of the tax year in which you started self-employment. For example, if you started self-employment in July 2025 (in the 2025/26 tax year), you must register by 5 October 2026. Registering sooner is sensible — HMRC can take several weeks to issue your UTR.

What happens if I don't register?

HMRC can issue penalties for late registration and late filing. The penalty system is date-based — the longer the delay, the larger the fine. Registering late is better than not registering at all.

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

Yes, very commonly. Many people have a PAYE job and also do freelance work. Your employer's PAYE system handles income tax on your employment income; Self Assessment handles the self-employment income. HMRC reconciles the two on your tax return.

Do I need to register for VAT?

Not until your taxable turnover exceeds £90,000 in a 12-month period. Below this threshold, VAT registration is optional (though voluntarily registering can have advantages in certain situations). Check the GOV.UK VAT guidance for current thresholds.

How do I pay tax if I earn inconsistently?

Self-employment income is taxed on an annual basis, so the annual total is what matters, not when individual payments arrived. Set aside a percentage of every invoice (a common guideline is 25–30% for a basic-rate taxpayer with moderate expenses) into a separate savings account specifically for tax, so you're not caught short in January.