Sole Trader vs Limited Company: Which Structure Is Right for You

The Two Main Options

When starting a business in the UK, most people choose between two structures: sole trader or limited company. Each has different implications for tax, personal liability, administration, and how the outside world perceives you.

There is no universally "better" option — the right choice depends on your income level, risk tolerance, and business goals.

Sole Trader

What It Means

You and your business are legally the same entity. You register with HMRC for Self Assessment, pay income tax and National Insurance on your profits, and keep all profits after tax.

Tax Treatment

• Profits taxed as personal income (20%, 40%, or 45%)
• Class 2 NI: £3.45 per week (above Small Profits Threshold)
• Class 4 NI: 6% on profits £12,570-£50,270, 2% above
• Personal Allowance: £12,570

Advantages

• Simple to set up — register with HMRC online in minutes
• Minimal admin — no company accounts to file, no Companies House obligations
• Privacy — your business accounts are not publicly available
• Lower costs — no accountancy fees for company accounts and compliance
• Full control — all decisions are yours
• Easy to close — simply inform HMRC

Disadvantages

• Unlimited personal liability — you are personally responsible for all business debts
• Higher tax at higher incomes — income tax rates (40%, 45%) can exceed company tax rates
• Perceived as less credible — some clients prefer dealing with limited companies
• No tax-efficient profit extraction — all profit is taxed as income

Limited Company

What It Means

Your business is a separate legal entity registered with Companies House. The company pays Corporation Tax on its profits, and you extract profits through a combination of salary and dividends.

Tax Treatment

• Corporation Tax on company profits: 25%
• Director's salary: subject to income tax and NI
• Dividends: taxed at 8.75% (basic), 33.75% (higher), 39.35% (additional), after £1,000 allowance
• Employer pension contributions: Corporation Tax deductible, no NI

Advantages

• Limited liability — your personal assets are protected from business debts
• Tax efficiency at higher incomes — the salary plus dividends strategy can save significant tax
• Professional image — "Ltd" after your name can increase credibility
• Pension contributions — employer contributions are very tax-efficient
• Flexibility — retain profits in the company for reinvestment

Disadvantages

• More admin — annual accounts, confirmation statement, Corporation Tax return
• Higher costs — accountancy fees typically £1,000-£3,000 per year
• Less privacy — company accounts are publicly filed
• More complex — director's responsibilities, payroll, dividend paperwork
• IR35 risk — if you work for one main client, HMRC may challenge your company structure

Tax Comparison: Worked Examples

At £30,000 Profit

Sole trader: Tax approximately £3,486 + NI approximately £1,226 = £4,712

Limited company: Corporation Tax £7,500, salary £12,570 (no tax/NI), dividends £10,000 (tax £787), total approximately £8,287 — worse than sole trader due to fixed costs and lower profit.

At £50,000 Profit

Sole trader: Tax approximately £7,486 + NI approximately £2,426 = £9,912

Limited company: Corporation Tax £12,500, salary £12,570, dividends £24,930, personal tax on dividends approximately £2,094, total approximately £9,594 — similar, slight company advantage.

At £80,000 Profit

Sole trader: Tax approximately £19,432 + NI approximately £3,226 = £22,658

Limited company: Corporation Tax £20,000, salary £12,570, dividends £47,430, personal tax approximately £6,269, total approximately £18,769 — company saves approximately £3,889.

The crossover point where limited company becomes more tax-efficient is typically around £40,000-£50,000 of profit, depending on your specific circumstances.

Other Considerations

IR35

If you operate through a limited company but work for a single client in a manner resembling employment, HMRC may apply IR35 rules, taxing you as if you were an employee. This removes most of the company tax advantages.

Mortgages

Some mortgage lenders prefer sole trader income (which is straightforward) over limited company income (salary plus dividends can be harder to evidence).

Growth Plans

If you plan to take on investment, issue shares, or eventually sell the business, a limited company is more suitable.

Industry Norms

In some industries (IT contracting, consultancy), limited companies are expected. In others (trades, creative freelancing), sole trader is the norm.

How Accounted Helps

Accounted is designed for sole traders, helping you stay on top of your finances from day one. If your income grows to the point where incorporation makes sense, your well-organised records make the transition smoother.

Explore our pricing plans.

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Choose the right structure for where you are — and where you are going. Sign up for Accounted and let Penny keep your sole trader finances in perfect order.