Limited Company vs Sole Trader UK: 7 Key Tax Differences in 2026

You have built something that works. The orders are steady, the diary is full, and one question keeps returning: should you stay a sole trader, or set up a limited company?

It’s one of the most common questions we hear from business owners across Chester, Wrexham and Warrington, and 2026 has genuinely changed the answer. A dividend tax rise in April, the arrival of Making Tax Digital for Income Tax, and frozen tax bands have all shifted where the “sweet spot” sits.

At Ellis & Co, we believe in being more than just accountants who crunch numbers at year-end. So let us break down the seven tax differences that actually matter, in plain English.

A quick overview

1. How your profits are taxed

This is the headline difference. As a sole trader, you and your business are the same legal person, so every pound of profit is charged to Income Tax: 20% on profits between £12,571 and £50,270, 40% up to £125,140, and 45% above that.

A limited company is a separate legal entity that pays Corporation Tax instead: 19% on profits up to £50,000, 25% on profits over £250,000, and an effective 26.5% on the slice in between (the “marginal relief” band). Crucially, that is the tax on company profit. So this means you’re then taxed again, personally, when you take money out.

2. National Insurance versus dividends

Sole traders pay Class 4 National Insurance at 6% on profits between £12,570 and £50,270, and 2% above. Mandatory Class 2 NIC was abolished from April 2024, so that flat weekly charge is gone.

Company directors usually take a small salary plus dividends. Dividends carry no National Insurance, which is where a lot of the historic savings came from. However, let’s see the next point as 2026 has trimmed it.

3. The dividend tax rise has moved the goalposts

From 6 April 2026, dividend tax rates rose by two percentage points: 10.75% for basic-rate taxpayers, 35.75% for higher-rate, and 39.35% for additional-rate. The tax-free dividend allowance stayed at just £500.

The practical effect is that the profit level where a company becomes more tax-efficient than sole trading has crept upward. So for many owners who draw most of what they earn, the break-even now sits broadly around the £50,000 profit mark rather than lower down. The exact figure depends on how much you leave in the business, so it’s worth modelling properly.

4. Tax-free allowances work differently

Both structures benefit from the £12,570 Personal Allowance. But a company owner also has the £500 dividend allowance and can, with planning, split income between a salary and dividends and even bring a spouse into the shareholding. Sole traders have far fewer levers. For them, profit is profit.

5. How losses are treated

Early-year losses are common, and the rules differ. A sole trader can often offset a trading loss against other personal income in the same or previous tax years, which can trigger a welcome tax refund. A company’s losses stay inside the company, carried back or forward against its own profits. For a brand-new venture expecting a slow first year, that distinction can be worth real money.

6. Making Tax Digital and the admin load

From April 2026, Making Tax Digital for Income Tax is mandatory for sole traders and landlords with qualifying income over £50,000 (falling to £30,000 in 2027 and £20,000 in 2028). That means digital records and quarterly updates to HMRC, the once-a-year cycle is ending. Limited companies are outside MTD for Income Tax and simply file a Corporation Tax return, though they carry their own filing duties at Companies House.

7. Privacy and public record

A sole trader’s finances stay between you and HMRC. A limited company files accounts and a confirmation statement at Companies House that anyone can view. Some owners value the credibility this brings. Others would rather keep the numbers private. It is a genuine trade-off, not just a tax point.

Should you switch? Let us do the maths

The honest answer is: it depends on your numbers. 

Before you incorporate, it’s worth running a side-by-side comparison of your take-home pay under each structure, factoring in the 2026 dividend rates and your MTD obligations. As mentioned by our director, John Farrell:

“There is no universally ‘right’ answer here. Only the right answer for your profit level, your plans and your appetite for admin. The businesses that get this decision right are the ones that model it properly before incorporating, rather than switching on a hunch and unpicking it later.”

With that in mind, at Ellis & Co, we do exactly that. We will model both routes, flag the break-even point for your specific profit level, and handle the switch cleanly if it makes sense. 

Get in touch with our team for a jargon-free chat.

About Ellis & Co

Ellis & Co is a leading firm of chartered accountants and business advisers specialising in accountancy & audit, bookkeeping, payroll, tax planning and business advisory services. We work with everyone from start-ups to established companies. With experienced teams in Chester, Warrington and Wrexham, we offer personalised solutions that help businesses succeed.

FAQs

Is a limited company always more tax-efficient than a sole trader?
No. After the April 2026 dividend tax rise, the advantage only appears once profits are high enough. So broadly around the £50,000 mark is when many owners draw most of their profit. Below that, the extra admin and costs often outweigh the savings.

Do sole traders have to follow Making Tax Digital in 2026?
Yes, if your qualifying income is over £50,000. From April 2026 you must keep digital records and send quarterly updates to HMRC. The threshold drops to £30,000 in April 2027 and £20,000 in April 2028.

How are dividends taxed in 2026/27?
The first £500 is tax-free. Above that, dividends are taxed at 10.75% (basic rate), 35.75% (higher rate) and 39.35% (additional rate). Each is about two points higher than in 2025/26.

Can I switch from sole trader to limited company later?
Absolutely. Many owners start as sole traders and incorporate once profits grow. The key is timing the switch around your figures and handling the transfer of assets and goodwill correctly, which is where an accountant helps.

Does a limited company protect me personally?
Generally yes. A company is a separate legal entity, so your liability is usually limited to what you have invested, unlike a sole trader whose personal assets are exposed. Personal guarantees on loans are an exception.