Sole trader vs limited company: Which structure is right for you in 2026?

The short answer

Sole trader or limited company? If your profits sit below roughly £40,000 to £50,000 and you value simplicity, staying a sole trader is usually the right call. Above that level, a limited company tends to make more financial sense, because you can control how and when you take money out.

That crossover is not a hard rule. Liability, how you plan to grow, whether you work through agencies and how much admin you can tolerate all move the line. The rest of this guide walks through the sole trader and limited company pros and cons in turn.

How each is taxed

A sole trader pays Income Tax and Class 4 National Insurance on all profits in the year they arise, whether or not the money is taken out of the business. There is one Self Assessment return, and the tax follows the usual personal bands.

A limited company pays Corporation Tax on its profits first, at 19% up to £50,000 of profit and up to 25% above that. You then choose how to pay yourself, typically a small salary plus dividends, and dividends are taxed at their own, lower rates. That two-step structure is the main limited company tax advantage, and it grows as profits rise.

The sole trader vs limited company calculator below shows the tax difference at your profit level, using real 2026/27 rates.

Liability and risk

One of the main limited company benefits is separation. As a sole trader, you and the business are legally the same person, so if the business owes money or gets sued, your personal assets are on the line. A limited company is a separate legal entity, so in most situations your risk is limited to what you put into it.

For low-risk service work that difference may not matter much, which is one of the sole trader pros and cons worth being honest about. If you take on contracts with real financial exposure, hold stock, employ people or sign leases, limited liability starts to earn its keep.

Admin and running costs

Here are the limited company pros and cons in practical terms. A sole trader keeps records and files one Self Assessment return a year, and pays Class 4 sole trader national insurance on profits. A limited company files annual accounts and a Corporation Tax return, a confirmation statement, payroll submissions if you take a salary, and the directors’ own Self Assessment returns on top.

That extra admin is real, but it is also exactly the work an accountant absorbs for a fixed monthly fee. For most clients the limited company tax advantages above the crossover comfortably outweigh the extra running cost. Use our instant estimate tool to see what each setup would cost with us. No hidden fees.

Sole trader to limited company: when switching makes sense

The usual trigger for going from sole trader to limited company is sustained profit growth: once profits sit comfortably above the crossover and look like staying there, incorporation starts paying for itself every year. Other triggers are a client or agency that insists on a limited company, something our contractor accountancy service sees every week, taking on staff, or wanting to leave profit in the business to fund growth.

Timing matters. Going from sole trader to limited company near the start of a tax year is usually cleaner, and the transfer of any assets and ongoing contracts needs doing properly. We handle the incorporation end to end, including the HMRC registrations.

How to decide

Start with three questions. Are profits consistently above the crossover? Would limited liability genuinely protect you? And are you happy to run a slightly more formal setup in exchange for the limited company tax advantages?

If the answers point in different directions, the right move depends on the detail of your income and plans, and that is a conversation rather than a formula. It is the conversation we have most weeks as a startup accountant, and we’ll give you a straight recommendation either way. Unsure how this applies to you? Get in touch.