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HMRC self-employment registration

Register as self-employed,in 20 minutes.

Register as a UK sole trader with HMRC the right way. UTR (Unique Taxpayer Reference) issued, Class 2 National Insurance enrolment confirmed, and clear guidance on your obligations going forward. £49 one-off, including a chartered-accountant set-up call.

Is this for you?

Register as self-employedis the right fit if…

Yes — if this is you

  • You've recently started, or are about to start, working for yourself in the UK and need to register with HMRC.
  • You've had self-employed income for less than the 2024/25 tax year and need to register before the 5 October following deadline.
  • You want a chartered accountant to actually do it properly with you, not just send you a link to gov.uk.
  • You want to understand UTRs, NI classes, the £1,000 trading allowance and MTD ITSA scope before you start.

Probably not — if…

  • You're already self-employed and have a UTR — you don't need to re-register.
  • You're forming a limited company — see our LTD registration service (£199).
  • You earn under £1,000/year from self-employment (the trading allowance covers you — no registration needed).
  • You only need someone to file your first Self Assessment — see our Self Assessment service (£99).

Direct answer

How much does registering as self-employed cost?

Registering as self-employed with HMRC is free if you DIY at gov.uk. Accountants typically charge £30-£100 to handle it for you. Ailo Accounting charges £49, including a 20-minute call with a chartered accountant covering tax planning, NI classes, MTD scope and record-keeping.

HMRC self-employment registration is free — you can do it yourself at gov.uk through the CWF1 form (or Government Gateway). It takes about 30 minutes if you have everything to hand and know what you're doing. The reason to pay an accountant is twofold: (1) avoiding mistakes that haunt you later (wrong trading name, wrong start date, missed Class 2 NI enrolment, registering as a partnership when you're a sole trader), and (2) getting proper guidance on your tax obligations and the £1,000 trading allowance, payments on account, MTD ITSA and record-keeping. Our £49 includes a 20-minute set-up call with a chartered accountant covering all of this.

How it works

How we deliver this for you.

  1. 01

    Quick onboarding form

    We collect your details (name, address, NI number, trade description, start date) and any other income sources via a secure 5-minute form.

  2. 02

    We register you with HMRC

    We submit the CWF1 self-employment registration to HMRC. Your UTR (Unique Taxpayer Reference) is issued by post — usually within 10 working days, sometimes faster.

  3. 03

    Set-up call & calendar

    20-minute call with a chartered accountant: NI classes, payments on account, allowable expenses, MTD ITSA scope (if relevant), record-keeping software recommendations, Self Assessment timing. You leave knowing what's next.

Common questions

Answered, plainly.

You register with HMRC by submitting form CWF1 online via Government Gateway, or by phone (0300 200 3500). You'll need: your full name, address, National Insurance number, the date you started self-employed work, a description of what you do, and an estimate of your expected income. HMRC issues a Unique Taxpayer Reference (UTR) by post within ~10 working days. We handle this whole process as part of our £49 service, plus a 20-minute set-up call.

By 5 October following the end of the tax year you started self-employed activity. Example: if you started self-employed work in June 2025 (tax year 2025/26, which ended 5 April 2026), you must register by 5 October 2026. In practice, register immediately — your UTR arrives in ~10 working days and HMRC correspondence then routes correctly. Late registration triggers Failure to Notify penalties (up to 30% of the tax owed, sometimes higher).

No. The £1,000 trading allowance means you don't need to register or file Self Assessment if your total self-employed gross income is under £1,000 in a tax year. If it might cross £1,000, register anyway — you can always claim the allowance instead of expenses if it works out better.

Unique Taxpayer Reference — a 10-digit number HMRC issues when you register for Self Assessment. It identifies you in all HMRC dealings: Self Assessment, payments, agent authorisations, MTD. You keep the same UTR for life. HMRC issues it by post (not email) for security, usually within 10 working days.

Class 2 NI was £3.45/week for 2024/25, abolished as a flat-rate charge from 6 April 2024 but still accruing for state pension and benefits purposes for those with profits over the Small Profits Threshold (£6,725). Class 4 NI is 8% on profits between £12,570 and £50,270, and 2% above £50,270 (2024/25 rates). Both are calculated and paid via Self Assessment alongside income tax. We explain how this applies to your situation on the set-up call.

Not necessarily. You can trade under your own legal name (e.g. 'Sarah Khan'). If you want to use a different trading name (e.g. 'Khan Plumbing Services'), it doesn't need to be registered, but it must not be misleading (no 'limited', 'Ltd' etc.), and you must include your legal name and address on invoices and business documents. Some banks require evidence of a trading name to open a business account — we'll help you decide.

Rough guide: under £30,000 annual profit, sole trader is usually simpler and tax-equivalent or better. £30,000-£50,000, depends on dividend strategy — modelling helps. Over £50,000 profit, limited company is usually more tax-efficient AND offers liability protection. You can register as a sole trader now and switch to LTD later if your business grows — many do exactly that. We cover this on the set-up call.

Sales invoices and income records (every payment in), expense receipts (or digital records), bank statements, mileage logs if claiming vehicle expenses, a record of cash withdrawals/personal use. HMRC requires records kept for at least 5 years from the 31 January submission deadline (so for the 2025/26 tax year, until 31 January 2032). Under MTD ITSA from April 2026, in-scope sole traders must keep records digitally using MTD-compatible software.

MTD for Income Tax applies from 6 April 2026 to sole traders and landlords with qualifying gross income over £50,000 in the 2024/25 tax year. Newly registered sole traders won't have a 2024/25 baseline, so HMRC will write to you when you cross thresholds. The threshold drops to £30,000 in April 2027 and £20,000 in April 2028 — so most growing sole traders will be in scope within a few years. Our set-up call covers exactly when MTD will apply to you and how to be ready.

Anything 'wholly and exclusively' for the business, from the day you started: tools, equipment, business mileage, professional subscriptions, accounting fees, software, marketing, training that maintains existing skills, home-office costs (apportioned), insurance, stock. Pre-trading expenses incurred up to 7 years before the business started can also be claimed in the first tax year — useful if you bought equipment before officially registering.

Very common. You're still required to register as self-employed and submit a Self Assessment annually. Your PAYE income is reported on the same Self Assessment alongside your self-employed profit. National Insurance treats them separately (you can't be double-charged on the same income), and HMRC handles the tax calculation across both. We cover the dual-income scenario on the set-up call.

Last reviewed: 12 May 2026 · Reviewed by a chartered accountant at Ailo Accounting

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