Self-assessment tax return made simple. Learn how UK sole traders & freelancers can file on time and avoid HMRC penalties.
Filing your self-assessment tax return in the UK can feel overwhelming — especially if you’re a freelancer, sole trader, or small business owner. Miss the deadline, and HMRC can charge penalties. Do it wrong, and you may pay more tax than you need to.
At AH Accountancy, we help businesses across the UK make tax time simple. Here’s our step-by-step guide to help you get started.
1. Do You Need to File a Self-Assessment?
You must file a self-assessment if you:
Are self-employed (sole trader)
Earn over £1,000 in untaxed income (e.g., freelance work, side hustle)
Are a partner in a business partnership
Have income from property, savings, or investments
2. Register with HMRC
If this is your first time:
Register online with HMRC for self-assessment.
You’ll receive a Unique Taxpayer Reference (UTR) by post.
Allow up to 10 working days for activation.
3. Collect Your Records
You’ll need:
Income details (invoices, sales)
Expenses (receipts, bills)
P60/P45 if employed alongside self-employment
Bank statements for verification
Tip: Keep your business and personal finances separate — it saves time and stress.
4. Claim Allowable Expenses
Common expenses include:
Home office costs (proportion of rent, utilities, internet)
Travel & mileage
Business insurance
Professional subscriptions
Office supplies
Not sure what to claim? That’s where an accountant can save you money.
5. File Online Before the Deadline
Key dates:
5 October – register for self-assessment
31 January – online tax return & payment deadline
Always aim to file early. It helps you plan for your bill and avoid last-minute rush.
6. Pay Your Tax
Once submitted, HMRC will calculate:
Income Tax
National Insurance
Any payments on account (if applicable)
7. Get Professional Help
Even if you use software, an accountant ensures:
You claim everything legally possible
Avoid mistakes that cause fines
Save time and stress
At AH Accountancy, we offer affordable self-assessment services across the UK — with free initial advice.
Need help filing your self-assessment?
📞 07723 554927 | 💬 Chat on WhatsApp
Or visit: www.ah-accountancy.co.uk
