Sole Trader vs Limited Company 2026: When to Switch

Whether to operate as a sole trader or through a limited company is one of the most common questions for freelancers and consultants starting out — and one of the most frequently over-complicated.

The financial crossover point sits at roughly £35,000–£40,000 of annual profit. Below that, the tax saving from a limited company structure often does not cover the added cost of running one. Above it, the gap between what you keep as a sole trader versus a director typically widens fast enough to make the switch worthwhile.

The core difference: how you're taxed

As a sole trader, all your business profit is treated as personal income. You pay income tax and National Insurance directly on everything you earn above the personal allowance. There's no distinction between what the business makes and what you take home.

As a limited company director, the company pays corporation tax on its profits first. You then draw money out of the company as a combination of salary and dividends — both of which are taxed more favourably than sole trader income at the same level.

Side-by-side tax comparison at key profit levels

These figures assume the director takes a £12,570 salary and draws the rest as dividends, with no employer pension contributions. Your specific numbers will vary — use the Salary vs Dividend Calculator for a personalised breakdown.

The costs of running a limited company

The tax saving doesn't arrive free. A limited company costs more to run than a sole trader setup:

• Accountant fees: £800–£1,500/year for a basic one-person limited company (sole trader accountancy: £300–£600)
• Companies House filing: £13/year for the confirmation statement
• Payroll software or processing: £0–£200/year
• Corporation tax return preparation: Often included in accountant fee, but check

At £25,000 profit, a £600 tax saving minus £700 in additional accountancy costs means you're worse off. At £40,000, a £2,300 saving minus £700 extra cost leaves a genuine £1,600 advantage. The breakeven is typically around £32,000–£38,000 depending on your accountant.

Beyond tax: the other reasons to switch

Tax isn't the only consideration. A limited company also gives you:

• Limited liability — your personal assets are protected if the company incurs debts or is sued. As a sole trader, your personal finances are directly exposed.
• More credible to larger clients — many enterprise and public sector clients will only contract with limited companies
• Easier to bring in investors or co-directors later
• Pension efficiency — employer pension contributions from your company are tax-deductible, making retirement saving significantly more tax-efficient

Golden nugget: the liability argument often matters more than the tax argument

If you work in any field where professional liability is a real risk — consulting, tech, financial advice, construction, healthcare — the limited liability protection of a company structure is worth having at almost any profit level. One client dispute that escalates to a legal claim can cost more than a decade of tax savings. Sole trader insurance helps but doesn't cover everything. Limited liability is structural protection that insurance can't replicate.

When a sole trader structure is still the right choice

Not everyone should switch. Sole trader is simpler and often better if:

• Your profit is consistently below £35,000 and you don't expect significant growth
• Your work is short-term or you're testing a business idea — setting up and closing a limited company takes time and cost
• You're employed elsewhere and this is secondary income — mixing salary, dividends, and self-employment income adds complexity
• You're close to retirement and won't benefit from long-term compounding of the tax saving

How to make the switch

Switching from sole trader to limited company involves: incorporating the company at Companies House (online, £50, takes 24 hours), opening a business bank account, registering for PAYE as a director, and notifying HMRC that your self-employment has ceased. Your accountant can handle most of this — ask for a formal incorporation as part of their onboarding process. The transition tax year requires filing both a self-assessment return and a corporation tax return.