Ltd vs sole trader: the 2026 decision, properly explained

Short answer: incorporate when the tax saving, the liability protection, or the commercial credibility is worth more to you than the extra admin and cost. For a lot of people that threshold arrives somewhere in the £30,000–£50,000 profit range — but profit alone is a poor way to decide, and plenty of profitable businesses are right to stay unincorporated.

Anyone who gives you a single magic number is guessing. Here is the actual decision.

The four things that genuinely differ

1. Liability

As a sole trader, you and the business are the same legal person. Business debts are your debts. If a supplier isn't paid or a claim lands, your personal assets are exposed.

A limited company is a separate legal person. Its debts are its own, and your risk is generally limited to what you have put in.

Two honest caveats. Directors can still be personally liable where they act wrongfully or trade while insolvent. And banks and landlords routinely ask small-company directors for personal guarantees, which sign the protection away for that particular debt.

If you carry real risk — physical work, holding client money, large supplier credit, any kind of professional liability — this factor alone can decide it, regardless of tax.

2. Tax

The structures are genuinely different, not just differently rated.

A sole trader pays Income Tax and National Insurance on all business profit, whether or not it is drawn out.

A limited company pays Corporation Tax on its profit. You then decide how to extract it — usually a modest salary plus dividends — and pay personal tax on what you take. Profit left in the company is not taxed personally until it is drawn.

That last point is the one most comparisons miss. If you need every penny of profit to live on, the gap narrows sharply. If you can leave money in the business — to reinvest, to smooth income across years, or to build a reserve — incorporation has room to work.

The rates, as they stand:

Corporation Tax is 19% on profits up to £50,000, 25% on profits over £250,000, with Marginal Relief tapering between the two. Those thresholds are reduced proportionately if you have associated companies or a short accounting period — a detail that catches people running two or three companies.

On extraction, the dividend allowance is £500 a year, and dividends above it are taxed at 10.75% (basic rate), 35.75% (higher rate) and 39.35% (additional rate) for 2026/27. Note that the basic and higher dividend rates have risen — comparisons written even a year ago will understate the tax on extraction, which is exactly the sort of stale figure that makes an incorporation decision look better on paper than it is.

Sole trader profits are taxed at ordinary Income Tax rates with National Insurance on top. The comparison that matters is therefore not "Corporation Tax vs Income Tax" — it is total tax on the money you actually take out, against total tax on the profit you make.

3. Admin and cost

This is where incorporation charges you.

The confirmation statement and Companies House fees above were checked against GOV.UK on the date shown at the top of this page.

4. Credibility

Uncomfortable but real: some customers won't contract with an unincorporated supplier. Larger companies, public sector buyers and some agencies have procurement rules that require it. Certain sectors treat "Ltd" as table stakes.

If you're being told you can't be onboarded as a sole trader, that ends the debate on its own.

What people get wrong

"I'll incorporate and pay less tax." Sometimes true, sometimes not, and it depends heavily on how much profit you actually need to withdraw. Run the numbers on your real drawings, not on profit.

"A limited company protects everything." Not once you've signed a personal guarantee for the lease and the overdraft, which most small-company directors do.

"It's just a bit more paperwork." It is a different regime with statutory deadlines and automatic penalties. Manageable — but only if you actually keep on top of it.

"I can undo it easily." Closing a company is more involved than stopping sole trading, and if there are retained profits the tax treatment on winding up needs thought before you start, not after.

Stay a sole trader if…

You're testing an idea, profits are modest, you withdraw everything you earn, your risk is low, and no customer is asking you to incorporate. Simplicity has real value and there is no prize for premature structure.

Incorporate if…

Profits are comfortably beyond what you need to live on, you're carrying genuine liability, customers require it, you plan to bring in a partner or investor, or you want to build something that can be sold. Companies can issue shares. Sole traders cannot.

The honest summary

Most of the value in this decision comes from being clear about how much you'll actually draw and what risk you're carrying. Get those two right and the answer usually becomes obvious. Get them wrong and no amount of tax modelling helps.

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