How Freelancers File a UK Tax Return: 2026/27 Guide

A UK freelancer normally files Self Assessment when gross freelance income exceeds £1,000 in a tax year. Register with HMRC, keep complete income and expense records, calculate taxable profit and submit the return online by 31 January.

Are freelancers self-employed?

Many freelancers operate as sole traders, but “freelancer” is not a legal tax status. You can instead work through a limited company, partnership or umbrella company. Employment status depends on the real working arrangement, not the label in a contract.

When must a sole-trader freelancer file?

Gross trading income above £1,000 normally requires registration and a return. At or below £1,000, the trading allowance can provide full relief subject to restrictions, but a return can still be needed for another reason or to claim a loss.

Registration and deadlines

For freelance income arising in 2026/27, the normal online deadline is 31 January 2028.

Records to collect

• customer invoices and platform statements;
• bank, card and payment-processor records;
• receipts and supplier invoices;
• home-working, travel and mileage calculations;
• equipment and software purchases;
• CIS deduction statements where relevant;
• foreign income and tax evidence;
• P60 or P45 information from any employment;
• pension, Gift Aid and student-loan details.

Calculate freelance profit

Taxable profit is broadly business income less allowable expenses, capital allowances and reliefs. Drawings from the bank account do not affect profit. Cash basis is the default for many sole traders from 2024/25 unless traditional accounting is elected.

Common freelancer expenses

• software, cloud tools and web hosting;
• professional insurance and subscriptions;
• marketing and portfolio costs;
• accountancy and business legal fees;
• business phone and internet use;
• qualifying travel and accommodation;
• home-working costs;
• equipment through capital allowances where appropriate;
• subcontractor costs.

Ordinary clothing, client entertaining, private costs and fines are generally disallowed.

Trading allowance versus expenses

You can normally deduct the £1,000 trading allowance instead of actual expenses where eligible. Do not claim both. Actual expenses can be better where they exceed £1,000 or create a loss.

Income Tax and National Insurance

Freelance profit is combined with employment, pension, rental and other income. The standard Personal Allowance is £12,570 for 2026/27, subject to tapering above £100,000. Class 4 National Insurance applies separately to profits above the relevant threshold at 6% within the main band and 2% above it.

Payments on account

If enough tax is not collected at source and the qualifying liability exceeds £1,000, advance payments for the next year may be due on 31 January and 31 July. A first-year freelancer can therefore face the full first-year balance plus a 50% advance payment in January.

Working through platforms

Online marketplaces and payment processors can report seller information to HMRC under platform-reporting rules. Platform fees are normally recorded separately from gross customer income. Do not report only the net bank settlement.

Foreign clients and currency

Convert foreign invoices and expenses to sterling using a reasonable, consistent rate. UK VAT and place-of-supply rules can apply separately. Keep exchange-rate and foreign-tax evidence.

CIS freelancers

Construction subcontractors report gross income and CIS tax deducted. Reconcile every monthly statement. CIS deductions are credits against final tax and National Insurance; they are not a business expense.

Making Tax Digital

MTD for Income Tax begins from April 2026 above £50,000 qualifying gross income, April 2027 above £30,000 and April 2028 above £20,000. In-scope freelancers keep digital records and send quarterly updates using compatible software.

Filing checklist

1. Reconcile gross invoices and platform income.
2. Review allowable expenses and private use.
3. Choose trading allowance or actual expenses.
4. Complete self-employment pages and other income sections.
5. Check Class 4, student loans and payments on account.
6. Submit and retain the receipt.
7. Pay by the due date or contact HMRC early.

Official guidance

• GOV.UK: working for yourself
• HMRC: Self Assessment returns

This guide is general information. Status, foreign work and company arrangements can require advice.