What Is a Sole Trader? Plain English Guide
Quick answer
A sole trader is a person who runs a business on their own. There’s no legal separation between you and the business — you own it, you make the decisions, you keep the profits (after tax), and you’re personally responsible for any debts.
It’s the most common business structure in the UK — and the focus of our getting started guide. There are around 3.5 million sole traders in the country, ranging from plumbers and freelance designers to Etsy sellers and personal trainers.
How it works
Setting up as a sole trader means registering with HMRC for Self Assessment. That’s it. No Companies House registration. No formation documents. No share structure or articles of association. You fill in a form online, wait for your UTR number, and you’re in business.
Each year, you file a Self Assessment tax return (deadline: 31 January) reporting your business income and expenses. HMRC calculates your Income Tax and National Insurance. You pay the bill. The rest is yours.
Benefits of being a sole trader
It’s simple to set up. Registration takes about 10 minutes online and costs nothing. Compare that with forming a limited company: £12 filing fee, articles of association, a registered office, annual accounts filed at Companies House, and confirmation statements every year.
You keep all the profits. After paying Income Tax and National Insurance on your profits, the money is yours. No corporation tax, no dividend paperwork, no director’s salary to structure.
Bookkeeping is straightforward. You need to keep records of your income and expenses, but you don’t need to prepare formal company accounts. A simple accounting app connected to your business bank account handles most of it.
Your finances stay private. Unlike a limited company, sole traders don’t file public accounts at Companies House. Your turnover, profit, and business details aren’t on a public register.
Minimal ongoing admin. No annual accounts to file, no corporation tax return, no confirmation statement. Your only obligation to HMRC is one Self Assessment tax return per year (plus quarterly MTD submissions if your income is above the Making Tax Digital threshold).
Easy to close. If you stop trading, you tell HMRC and that’s it. No formal dissolution process, no striking off at Companies House.
The downsides
Unlimited liability. This is the big one. You and the business are legally the same. If your business owes money, creditors can come after your personal assets — savings, car, potentially even your home. This is why business insurance matters, even when it’s not legally required.
Tax efficiency has limits. Once you’re earning well above £50,000 in profit, a limited company structure can be more tax-efficient (through a combination of lower Corporation Tax and dividend income). Our sole trader vs limited company guide explains exactly where the crossover point is.
Harder to raise investment. Sole traders can’t sell shares in their business. If you need external investment, you’d typically need to incorporate as a limited company.
Less perceived credibility with some clients. Some larger companies and public sector organisations prefer to work with limited companies. This is less of an issue than it used to be — most clients don’t care about your business structure if you do good work — but it comes up occasionally in corporate contracting.
Who should be a sole trader?
Most people starting out on their own. Specifically:
- Freelancers and consultants — low risk, straightforward income
- Tradespeople — plumbers, electricians, builders, decorators
- Side hustlers — anyone earning extra income alongside a day job
- Online sellers — Etsy, eBay, Amazon sellers
- Service providers — tutors, cleaners, personal trainers, photographers
- Creative professionals — writers, designers, musicians
The general rule: start as a sole trader, switch to limited company only when the numbers justify it. For most sole traders earning under £40,000–£50,000 in profit, there’s no tax advantage to incorporating, and the extra admin isn’t worth it.
Sole trader vs other structures
| Sole Trader | Limited Company | Partnership | |
|---|---|---|---|
| Setup | 10 mins, free | £12+, more paperwork | Partnership agreement needed |
| Liability | Unlimited (personal) | Limited to company assets | Unlimited (shared) |
| Tax | Income Tax + NI on profits | Corporation Tax + personal tax on salary/dividends | Each partner taxed individually |
| Admin | One tax return/year | Annual accounts, corporation tax return, confirmation statement | Partnership tax return + individual returns |
| Privacy | Private | Public accounts | Private |
For a detailed comparison: Sole trader vs limited company — which is right for you?
Next step
If sole trader sounds right for you:
- Register with HMRC — free, 10 minutes, all online
- Choose a business name (or just use your own name)
- Open a business bank account — separates personal and business money
- Pick accounting software — handles your bookkeeping and tax return
Last updated: March 2026.