Sole Trader vs Limited Company in 2026/27: Fresh Tax Comparison

Deciding between sole trader and limited company status is one of the most consequential choices you will make as a self-employed person in the UK. The tax treatment differs significantly, and the gap has widened since corporation tax was reformed in April 2023. This guide cuts through the noise with real numbers for 2026/27.

The Basic Tax Position

Sole Trader

As a sole trader, all profits are yours — but so is all the tax. You pay:

• Income tax on profits above your personal allowance (£12,570): 20% basic rate, 40% higher rate above £50,270, 45% additional rate above £125,140
• Class 2 NI: £3.45 per week (£179.40/year) — a flat-rate charge for most self-employed people
• Class 4 NI: 6% on profits between £12,570 and £50,270, then 2% above

So at £60,000 profit, a sole trader pays roughly:

• Income tax: £(60,000 − 12,570) × 20% = £9,486, plus £(60,000 − 50,270) × 40% = £3,892 → £13,378
• Class 4 NI: (£50,270 − £12,570) × 6% = £2,262, plus (£60,000 − £50,270) × 2% = £195 → £2,457
• Class 2 NI: £179
• Total tax/NI: ~£16,014 (26.7% effective rate on £60,000)

Limited Company

A limited company pays corporation tax on profits, and you as director extract money via salary and dividends.

• Corporation tax: 19% on profits up to £50,000; 25% above £250,000; marginal rate of 26.5% between £50k and £250k
• Director salary: £12,570 (no income tax, no employee NI, minimal employer NI — covered by Employment Allowance if eligible)
• Dividends: taxed at 8.75% (basic rate), 33.75% (higher rate), 39.35% (additional rate); £500 tax-free dividend allowance in 2026/27

At £60,000 company profit, the typical extraction strategy:

1. Pay salary of £12,570 → corporation tax base reduced to £47,430
2. Corporation tax at 19%: £9,012
3. Remaining profit after CT: £47,430 − £9,012 = £38,418 available for dividend
4. Dividend income: £12,570 (salary) + £38,418 (dividend) = £50,988 total — stays within basic rate band
5. Dividend tax: (£38,418 − £500 allowance) × 8.75% = £3,322
6. Total tax: £9,012 + £3,322 = £12,334 (20.6% effective rate)

Saving versus sole trader at £60,000: approximately £3,680 — before accountancy costs.

Break-Even Analysis

The tax saving grows with income, but so does the complexity. Here is a simplified comparison at key profit levels (assuming director takes salary of £12,570 plus dividends, no Employment Allowance, accountant cost £2,000/year):

Figures are illustrative. Individual circumstances vary.

The break-even point generally sits around £35,000–£40,000 net profit. Below that, the accountancy overhead eats the tax saving and then some.

The Admin Reality of Going Limited

A limited company is a separate legal entity from you. That means:

1. Companies House registration: £50 one-off (online)
2. Annual confirmation statement: £34/year (online)
3. Statutory accounts: must be filed with Companies House annually
4. Corporation tax return (CT600): filed with HMRC
5. Payroll (PAYE): required if paying yourself a salary; RTI submissions to HMRC each month
6. VAT returns: if registered
7. Director's loan account: careful bookkeeping required if you ever take money informally

Most owner-directors use an accountant for all of the above. Quality accountancy for a single-director company costs £1,500–£2,500/year. Some online accountants (e.g. Crunch, Gorilla Accounting) offer packages from £100–£150/month.

When Sole Trader Wins

Going limited is not always the right call. Sole trader status may be preferable when:

• Profits are below ~£35,000: the simplicity advantage outweighs the tax saving
• You are building a business that reinvests all profit: there is no cash to extract, so dividend planning is academic
• Your business has significant losses: sole trader losses can offset other personal income more straightforwardly
• Clients prefer simplicity: some SME clients find sole trader invoicing administratively easier
• IR35 risk is low: if you are a consultant working with one client closely, staying as a sole trader removes IR35 exposure entirely

When Limited Company Wins

Switch to limited company when:

• Profits exceed £35,000–£40,000 consistently
• You want to retain profits in the company and draw them over multiple tax years (income smoothing)
• Liability protection matters: your personal assets are shielded from business debts (with caveats around personal guarantees)
• You are pitching for larger corporate contracts where limited company status signals credibility
• Employer pension contributions: a company can contribute to your pension as a deductible business expense, reducing corporation tax

National Insurance: A Critical Difference

Many guides understate the NI advantage of a limited company. As a sole trader at £60,000:

• Class 4 NI alone costs £2,457/year
• Class 2 adds another £179/year

Dividends from a limited company carry no NI liability for either employer or employee. This is a significant structural advantage at higher profit levels, and one that HMRC has been watching for years — but it remains fully legal as at 2026/27.

Switching: Practical Steps

If you decide to incorporate, the process is straightforward:

1. Register the company at Companies House (£50 online, usually same-day)
2. Open a business bank account in the company name
3. Register the company for corporation tax within 3 months of starting to trade
4. Register for PAYE if you will pay yourself a salary
5. Transfer any business assets to the company (take advice on Capital Gains Tax implications)
6. Notify your clients that invoices will now come from the new company

Your sole trader business does not automatically transfer — you will need to novate contracts where necessary.

Summary

The choice between sole trader and limited company is ultimately a numbers game tempered by your personal tolerance for administration. At profits below £35,000, keep things simple. Above £40,000 and rising, the limited company structure typically saves meaningful amounts of tax — but only if you engage a competent accountant and maintain proper records.

Run the numbers for your own situation before making any decision.