Sole Trader vs Limited Company: A 2026 Update to Our 2025 Guide

In January 2025 we published our guide to choosing between sole trader and limited company status. Eighteen months on, the underlying advice has not changed, but the numbers absolutely have. Three policy moves — the new 15% employer NIC rate, the £500 dividend allowance settling in, and Business Asset Disposal Relief stepping up — have squeezed the incorporation premium meaningfully.

If you read our 2025 piece and concluded that incorporation was an easy yes, the answer in 2026 is genuinely less clear. This update walks through what changed since January 2025, the refreshed worked example for an SME on £70,000 of profit, and the five questions Kent business owners should answer before changing structure either way.

What has changed since our January 2025 guide

Our 2025 piece was written before the April 2025 NIC overhaul had bedded in. Four policy moves — three of them post-dating that article — have together narrowed the gap between the two structures:

• Corporation tax rose for profits above £50,000 in April 2023, taking the headline rate to 25% and creating a 26.5% marginal band between £50,000 and £250,000.
• The dividend allowance fell from £2,000 in 2022/23 to £500 from April 2024.
• Dividend tax rates rose by 1.25 percentage points in 2022.
• Employer NIC rose to 15% with a much lower secondary threshold from April 2025, increasing the cost of paying a director’s salary.

The combined effect is that, on profits of around £50,000 to £80,000, the post-tax difference between operating as a sole trader and as a limited company has shrunk to a few thousand pounds a year. At lower profit levels the difference can disappear altogether once accountancy and compliance costs are taken into account.

The 2026 numbers, in round terms

Take an owner-managed business with profits of £70,000 a year, no other income, and no employees. The simplified comparison looks like this:

Sole trader

• Income tax and Class 4 NIC on £70,000 of trading profit comes to roughly £18,200, leaving about £51,800 of net income.

Limited company

• Director’s salary at the secondary NIC threshold of £5,000.
• Remaining profit of £65,000 taxed at the small-profits rate of 19%, giving a corporation tax bill of about £12,350.
• Net distributable profit of around £52,650, paid as dividends.
• Dividend tax on £52,650, after the £500 allowance and the unused personal allowance, totals roughly £3,800.
• Combined net income of approximately £54,000.

A difference of around £2,200 in favour of the limited company. Not negligible, but not the £6,000+ swing that was typical five years ago. Once you subtract higher accountancy and compliance costs of, say, £1,500 a year, you are looking at a marginal advantage.

Where incorporation still wins comfortably

1. Profits above £100,000. Once you reach the personal allowance taper, the ability to leave money inside the company at 19% or 25% rather than taking it out at 60% effective marginal rates is a significant planning tool.
2. Reinvesting profits into the business. If you are funding growth, equipment or hiring out of retained earnings, corporation tax at 19% or 25% beats personal income tax at 40% every day of the week.
3. Multiple shareholders. Splitting dividends with a spouse who has unused basic-rate band or personal allowance is still a legitimate, well-trodden planning route.
4. You want investor or staff option arrangements. EMI, EIS and SEIS only apply to companies. If venture capital, angel money or staff share schemes are on the horizon, you need to be incorporated.
5. You sell to large corporates or the public sector. Many large buyers will only contract with limited companies; some procurement frameworks require it.

Where staying as a sole trader makes sense

1. Profits under £30,000 a year. The tax saving is usually wiped out by accountancy fees and the admin overhead of running a company.
2. Lifestyle businesses with no growth ambition. Simpler is genuinely better. The sole trader regime has fewer moving parts and less risk of compliance penalties.
3. You draw out all the profits. If you take everything every year, the corporation tax + dividend tax route only narrowly beats the income tax route, and the gap may not justify the complexity.
4. You value privacy. Sole trader accounts are not on public record. Company accounts are.
5. You are unsure about the business itself. Incorporating, then dis-incorporating a few years later, is an avoidable headache. Trade for at least a year as a sole trader before incorporating.

Five questions to answer before you decide

1. What will my profit profile look like over the next three years, not just this one?
2. How much of that profit do I genuinely need to take out personally?
3. Do I have a spouse or business partner I can legitimately split income with?
4. Are external investors, staff equity or trade sale realistic prospects?
5. Can I cope with the additional compliance: corporation tax, payroll, P11Ds, statutory accounts, Confirmation Statements and the rest?

Honest answers to those five questions will get you 80% of the way to the right structure.

The MCC Partners view in 2026

The blanket advice to incorporate at the first sign of profit is dead. In 2026, the decision is genuinely client-specific, and that is no bad thing. Some businesses we have helped incorporate over the last twelve months would have been better staying as sole traders, and a handful of long-standing sole traders have crossed a profit threshold where incorporation is now obviously the right move.

The cost of getting it wrong is rarely catastrophic, but it can quietly leak thousands of pounds a year out of the back door of your business. A one-hour structuring review with a numbers-led adviser is the cheapest insurance you will ever buy.