Becoming a sole trader is the simplest way to start working for yourself in the UK. There is no company to set up and no separate legal entity, which is why many freelancers, tradespeople and online sellers begin this way. But simple does not mean there is nothing to do: you still have registration, record-keeping and tax responsibilities.
This guide explains the main steps in plain English. It is general information only, based on guidance from HMRC and GOV.UK as we understand it, and rules and thresholds change, so check the official pages or speak to a qualified accountant before acting. We are not licensed financial or tax advisers.
What being a sole trader means
A sole trader runs a business as an individual. You keep the profits after tax, but you are also personally responsible for any debts the business runs up. That is the main difference from a limited company, where the business is legally separate from you.
You can still use a trading name, hire people and work from home. You do not need to be full time either, since many people start with a side income alongside a job.
When you need to register
HMRC generally expects you to register for Self Assessment if you earn above a certain amount from self-employment in a tax year. There is a trading allowance that can cover small amounts of side income, but the exact figure and how it applies depends on your circumstances, so check the current GOV.UK guidance rather than relying on an old figure.
You usually need to register by the deadline that follows the end of the tax year in which you started trading. Registering late can mean penalties, so it is better to do it early. If you are unsure whether your income counts as trading, it is worth asking HMRC or an adviser.
How to register, step by step
First, gather your National Insurance number and personal details. Next, register for Self Assessment online through GOV.UK and choose the option for being self-employed. HMRC will then send a Unique Taxpayer Reference, often called a UTR, by post, and you will need it to file your return.
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You will also set up a Government Gateway account if you do not already have one, and activate it with the code sent to you. Keep the paperwork safe. Be careful with scam messages claiming to be from HMRC; our guide on spotting fake websites includes useful warning signs that apply here too.
Keep good records from day one
You must keep records of your income and expenses, and HMRC may ask to see them. Many sole traders use a simple spreadsheet, while others use accounting software. Either works, as long as you record every sale and every business cost along with the date and a receipt or invoice.
Open a separate bank account for the business if you can. It is not always a legal requirement for sole traders, but it makes your records far cleaner and saves hours at tax time. If you are unsure how to charge for your work, our article on pricing your services as a UK freelancer can help you plan.
Understand tax, National Insurance and deadlines
Sole traders pay Income Tax on their profits, not their turnover, and may pay National Insurance contributions depending on their level of profit. Tax is normally settled through the Self Assessment return, with a payment deadline in January and sometimes a second payment later in the year.
A common mistake is spending everything you earn and forgetting that a tax bill is coming. Many people set aside a portion of each payment in a separate savings pot. The right percentage depends on your profit and circumstances, so ask an accountant rather than copying a rule of thumb. Our note on the Self Assessment deadline has the key date to put in your diary.
VAT, insurance and other things to consider
If your taxable turnover passes the VAT registration threshold, you must register for VAT. The threshold is set by the government and can change, so check the current figure. You can also register voluntarily in some cases, although that brings extra admin.
Depending on your work, you might need public liability insurance, professional indemnity cover or permission from a local council. Some trades and activities need licences. Check what applies to your sector before you take on customers.
Is sole trader or limited company better?
There is no single right answer. Sole trader status is cheaper and easier at the start, with fewer filing requirements. A limited company offers limited liability and can look more established to some clients, but it brings more paperwork, accounts and filing duties.
Many people start as a sole trader and move to a company later if the business grows. An accountant can compare the figures for your situation, and it is usually worth a short paid conversation before you decide.
