Sole Trader vs Limited Company UK — Tax Comparison

Sole Trader vs Limited Company: Tax Comparison

As a sole trader, you pay income tax and Class 4 National Insurance directly on your business profits. The combined effective tax rate increases as profits rise, from 20 per cent at the basic rate to 42 per cent at the higher rate when income tax and NI are combined. A limited company pays corporation tax on its profits, currently 19 per cent for profits up to 50,000 pounds and 25 per cent for profits over 250,000, with marginal relief between these thresholds.

The director of a limited company can extract money through a combination of salary and dividends. By paying a salary at the NI threshold and taking the rest as dividends, the effective tax rate is typically lower than sole trader taxation for profits above approximately 30,000 to 40,000 pounds per year. However, the exact crossover point depends on individual circumstances including other income, personal allowance usage and dividend tax rates.

Beyond Tax: Practical Differences

A sole trader is the simplest business structure with minimal paperwork. You register with HMRC, file an annual self-assessment tax return and keep basic records of income and expenses. There is no public filing requirement and you can use your business profits freely. The downside is unlimited personal liability, meaning your personal assets including your home are at risk if the business incurs debts or legal claims it cannot pay.

A limited company is a separate legal entity from its director and shareholders. This provides limited liability protection, meaning the company’s debts are the company’s responsibility, not yours personally, subject to certain exceptions such as personal guarantees. However, you must file annual accounts at Companies House, maintain statutory registers, submit corporation tax returns and payroll returns and comply with company law requirements. This additional administration typically costs 500 to 2,000 pounds per year in accountancy fees.

Which Structure Is Right for You?

For businesses with modest profits below 30,000 pounds, the simplicity of sole trader status often outweighs the marginal tax savings of a limited company. As profits grow above this level, the tax benefits of a limited company become increasingly significant and usually justify the additional costs and complexity. If you work in a field where personal liability is a concern, or your clients require you to have limited company status, that may override the tax considerations.

Estimate your tax as a sole trader with our freelance tax calculator, or value your business using the business valuation calculator. For setting up a business, visit GOV.UK.