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Sole Trader vs Limited Company Checker
One of the first questions every UK small business faces — and there's no single right answer. Answer five quick questions and this tool weighs up the trade-offs and gives you a leaning. It's a starting point for a proper chat with an accountant, not a replacement for one.
Based on your answers — a leaning, not a verdict.
What pushed it this way:
Sole trader
- Simplest to set up — register with HMRC and you're going
- Least admin: one Self Assessment tax return a year
- Your details and accounts stay private
- Full control, keep all the profit after tax
- Cheaper to run — often no accountant needed
- No limited liability — your personal assets are exposed
- Can be less tax-efficient once profits climb
- Harder to bring in investment or business partners
- Some larger clients prefer to deal with a Ltd
Limited company
- Limited liability — personal assets are protected*
- Often more tax-efficient at higher profits (salary + dividends)
- Easier to bring in shareholders, staff or investment
- A "Ltd" can look more established to bigger clients
- Company name is protected once registered
- More admin: annual accounts, confirmation statement, Corporation Tax
- Directors' names and accounts are on the public register
- Usually needs an accountant — an ongoing cost
- Money in the company isn't automatically yours to spend
*Limited liability doesn't cover personal guarantees, fraud or negligence — get proper advice on where you actually stand.
This is general guidance, not accounting or legal advice. Tax thresholds, allowances and company rules change regularly, and the right structure depends on your full circumstances. This is exactly the kind of decision worth 30 minutes with a qualified accountant — they'll often save you more than they cost. Confirm anything here with them before you act.
Should I be a sole trader or a limited company?
There's no universal right answer — it depends on your profit, your appetite for risk, how much admin you can stomach and where you want the business to go. As a rough rule of thumb, many people start as a sole trader for simplicity and switch to a limited company later, often once profits are consistently in the tens of thousands or they want the protection of limited liability. This checker weighs those factors up and gives you a leaning to take to an accountant, not a final decision.
Is a limited company more tax-efficient?
It can be, particularly once profits are broadly in the £30,000–£50,000+ range, because a company can pay you through a mix of salary and dividends that is sometimes taxed more favourably than sole-trader income. But it isn't automatic — the savings depend on how much you take out, current tax rates and your wider situation, and they can be eaten up by the extra accountant and admin costs. The only way to know for your numbers is to run both scenarios with an accountant.
What are the downsides of a limited company?
More admin and cost, mainly. A company has to file annual accounts and a confirmation statement at Companies House, submit a Corporation Tax return, and usually run payroll if you pay yourself a salary — most people use an accountant to handle it, which is an ongoing expense. Your company's accounts and the directors' names also go on the public register, so there's less privacy than as a sole trader. Money the company earns isn't automatically yours to spend either; you have to pay it out properly.
Does this tool store my details?
No. Everything you type stays in your browser and is used only to work out the leaning on screen. Nothing is uploaded, saved or sent anywhere, and there's no sign-up. Refresh the page and it's gone.
Please note: this tool gives a guide or estimate only. It may not be 100% accurate and is not professional advice — always check the figures before you rely on them. Rates, thresholds, allowances and rules can change without notice and may be out of date by the time you use this tool. Verify against HMRC / GOV.UK or your accountant before acting. This checker gives a general leaning to discuss with a professional — it is not accounting, tax or legal advice, and it does not account for your full circumstances.
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