Freelancing in the UK as a Migrant: Tax, Invoicing, and Getting Paid (2026)

Freelancing looks like an obvious way to earn extra income or work flexibly after moving to the UK. For many migrants, though, the first real question isn’t about tax — it’s whether their visa allows it at all. This guide covers both: the immigration reality, and then the tax, invoicing and payment mechanics once you’ve confirmed you’re clear to freelance.

Does Your Visa Allow Self-Employment?

UK immigration law treats self-employment very differently from employment, and the rules vary sharply by visa type:

• Skilled Worker visa — self-employment is generally not permitted, even as supplementary work alongside your sponsored job. Supplementary work must be structured as employment with another employer, not freelancing.
• Student visa — freelance and self-employed work is generally not permitted.
• Graduate visa — freelance work may be possible, but eligibility should be confirmed rather than assumed.
• Spouse, family, and dependant visas — often permit self-employment, but this depends on the specific visa and should be checked against your own conditions.
• Indefinite Leave to Remain and Settled Status — no restriction on self-employment.

If you’re unsure, check the conditions listed on your visa or UKVI account directly, or speak to an immigration adviser before taking on any client work — this is genuinely worth confirming in writing rather than assuming.

Registering as Self-Employed with HMRC

Once you’ve confirmed you’re permitted to freelance, you need to register for Self Assessment with HMRC. The deadline is 5 October following the end of the tax year in which you started trading — for example, if you start freelancing in June 2026, you must register by 5 October 2027. Registering late can trigger a penalty even if you file and pay on time once you do register, so it’s worth doing this as soon as you start earning rather than waiting.

Income Tax and National Insurance on Freelance Income

As a self-employed freelancer, you pay Income Tax on your profits — your total freelance income minus allowable business expenses — at the same rates as employees: 20% basic rate, 40% higher rate, and 45% additional rate, above your £12,570 tax-free Personal Allowance.

You’ll also pay Class 4 National Insurance on profits: 6% on profits between £12,570 and £50,270, and 2% above that. Mandatory Class 2 National Insurance was abolished in April 2024 — if your profits are above the Small Profits Threshold (£7,105 for 2026/27), you’re automatically credited for benefits without paying anything extra. If your profits are below that threshold, you can choose to pay voluntary Class 2 contributions to protect your entitlement to the State Pension and other contributory benefits.

Both Income Tax and National Insurance are calculated together on your Self Assessment return, due online by 31 January following the end of the tax year, with any tax owed paid by the same date.

Do You Need to Register for VAT?

VAT registration becomes mandatory once your taxable turnover exceeds £90,000 in any rolling 12-month period. Below that threshold, registration is voluntary — some freelancers register anyway if their clients are VAT-registered businesses that can reclaim the VAT, or if they have significant VAT on their own business expenses to reclaim.

Invoicing Clients Correctly

There’s no single mandatory invoice format for non-VAT-registered freelancers, but a professional invoice should always include:

• Your name or business name, and contact details
• A unique invoice number
• The invoice date and the date the work was completed
• A clear description of the work or goods provided
• The amount due, and your payment terms (for example, “due within 14 days”)
• Your bank details for payment

If you register for VAT, invoices to VAT-registered clients must also show your VAT registration number, the VAT rate applied, and the VAT amount separately from the net total.

Getting Paid and Chasing Late Payments

Unlike employment, freelancing puts the responsibility for getting paid entirely on you. Setting clear payment terms upfront, invoicing promptly, and following up on overdue invoices are all part of the job. UK law (the Late Payment of Commercial Debts legislation) allows you to charge statutory interest and a fixed compensation fee on overdue business-to-business invoices, which is worth knowing even if you rarely need to use it. Keeping a simple record of every invoice sent, paid, and outstanding makes both cash flow and your eventual tax return much easier to manage.

For a broader look at getting paid as a freelancer in the UK, including payment platforms and setting rates, see our guide on getting paid as a freelancer, and our roundup of the best freelance platforms in the UK covers where to find client work.

Common Mistakes to Avoid

• Freelancing on a visa that doesn’t permit it — the single most serious mistake, since it’s an immigration issue, not just a tax one.
• Registering with HMRC late — do it as soon as you start earning, not close to the 5 October deadline.
• Confusing turnover with profit — tax and National Insurance are calculated on profit after allowable expenses, not on your total invoiced amount.
• Not setting aside money for tax — since nothing is deducted automatically as it would be through PAYE, it’s easy to spend what should be set aside for your January tax bill.

Frequently Asked Questions