Home / Guides / Limited Company vs Sole Trader: Full Tax Comparison 2026/27
The decision between a limited company and sole trader structure is not purely a tax question — though tax is the part most people focus on. Administrative burden, extraction strategy, retained profit flexibility, commercial considerations and long-term plans all form part of the answer. This guide gives an honest comparison across three profit levels, including the admin costs that affect the real-world outcome.
Last updated May 2026. Written by the LimitedCompanyTaxCalculator.co.uk editorial team and reviewed against current GOV.UK and HMRC guidance. Results are estimates for planning only and are not tax, accounting or financial advice.
As a sole trader, income tax and Class 4 NI are calculated directly on taxable profit. There is no legal separation between the individual and the business. If the profit is £60,000, the tax calculation starts from £60,000 after allowable expenses.
As a limited company director, the company pays corporation tax on its profit first (19–25% depending on profit level). The director then extracts income as a combination of salary and dividends. Salary is subject to income tax, employee NI and employer NI. Dividends are taxed at lower rates (10.75% basic, 35.75% higher) and are not subject to NI. The structural advantage arises because dividend tax rates are lower than income tax rates at equivalent levels, and NI does not apply to dividends.
Against this advantage, two costs reduce the real-world saving: the employer NI cost on the director salary, and the additional accountancy cost of running a limited company compared to filing a sole trader Self Assessment return. The net benefit depends critically on profit level, extraction strategy and accountancy fees.
Sole trader at £40,000 profit (England): income tax approximately £5,486, Class 4 NI approximately £1,646. Total tax: approximately £7,132. Take-home: approximately £32,868. Effective rate: approximately 17.8%.
Limited company: director takes £12,570 salary, employer NI £1,139. Company taxable profit: £40,000 − £12,570 − £1,139 = £26,291. Corporation tax at 19%: approximately £4,995. Post-tax profit for dividends: approximately £21,296. Director takes £21,296 as dividends. Total personal income: £33,866. Income tax on salary: £0. Dividend tax: £500 allowance, then £20,796 at 10.75% = £2,236. Total tax (corporation tax + employer NI + dividend tax): approximately £8,370. Personal take-home: approximately £31,630.
At £40,000 profit, the sole trader structure produces approximately £1,238 more in personal take-home than the limited company — before accounting for the additional accountancy cost of running a company (typically £1,000–£2,000 more per year). The limited company offers no financial advantage at this profit level when real costs are included. Administrative simplicity strongly favours the sole trader structure here.
Sole trader at £60,000 profit (England): income tax approximately £13,432, Class 4 NI approximately £2,457. Total tax: approximately £15,889. Take-home: approximately £44,111. Effective rate: approximately 26.5%.
Limited company: director takes £12,570 salary, employer NI £1,139. Company taxable profit: £60,000 − £12,570 − £1,139 = £46,291. Corporation tax at 19%: approximately £8,795. Post-tax profit for dividends: approximately £37,496. Director takes all as dividends. Personal income: £12,570 + £37,496 = £50,066. Dividend tax: £500 allowance, then £36,996 at 10.75% = £3,977. Total tax: approximately £13,911. Personal take-home: approximately £46,089.
The limited company produces approximately £1,978 more in personal take-home than the sole trader at £60,000 profit. Whether this outweighs the extra accountancy cost depends on individual circumstances — it is close to neutral for many directors. This is the profit range where the question genuinely starts to be worth analysing, particularly if not all profit needs to be extracted annually.
Sole trader at £100,000 profit (England): income tax approximately £29,432, Class 4 NI approximately £3,177. Total tax: approximately £32,609. Take-home: approximately £67,391. Effective rate: approximately 32.6%.
Limited company: director takes £12,570 salary, employer NI £1,139. Company taxable profit: approximately £86,291. Corporation tax at marginal relief rate (on £86,291): approximately £20,946. Post-tax profit for dividends: approximately £65,345. Director takes dividends of £37,700 (to stay in basic rate band). Total personal income: £50,270. Dividend tax approximately £3,997. Personal take-home: approximately £46,273. Retained in company: approximately £27,645.
If the director extracts all available profit as dividends, approximately £16,660 falls into the higher-rate dividend band at 35.75%, adding approximately £5,956 in dividend tax. Total personal take-home with full extraction: approximately £57,662. Combined total tax: approximately £42,338. This is approximately £9,729 higher than the sole trader total tax of £32,609. However, if the director only needs £46,273 in personal income and retains the remaining £27,645 in the company (already having paid 25% corporation tax on that amount), the effective total tax including the deferred personal extraction is significantly lower. The retained-profit flexibility is the key advantage at this level.
A sole trader's administrative requirements are straightforward: register with HMRC as self-employed, file an annual Self Assessment return, pay tax by the relevant deadlines, and keep business records. No Companies House filings, no company accounts, no payroll administration in most cases.
A limited company requires annual confirmation statements and company accounts filed at Companies House; a corporation tax return filed with HMRC; a PAYE payroll for the director salary; consistent separation of company and personal finances; and compliance with Companies House and HMRC filing deadlines simultaneously. The additional accountancy cost is typically £1,000–£2,000 per year compared to a straightforward sole trader arrangement.
Non-tax factors also weigh in. Some clients and public sector bodies require limited company status, removing the tax comparison as the deciding factor. A limited company may provide greater credibility with certain clients or lenders. Limited liability protects personal assets if the business faces claims — sole traders are personally liable. These factors can override the tax comparison at any profit level.
No. At lower profit levels (under approximately £50,000), the combined taxes for a limited company often exceed those of a sole trader when the actual extraction costs are modelled, and the administrative overhead further reduces the advantage. The limited company becomes genuinely more efficient at higher profits, particularly when some profit is retained rather than fully extracted.
As a rough guide, the tax saving from a limited company structure typically exceeds the additional accountancy cost at around £50,000–£60,000 in profit. Below that, the numbers are close and the extra admin often outweighs the saving. Above £70,000–£80,000, the tax advantage is clearer — particularly when not all profit needs to be extracted immediately.
Use SoleTraderTaxCalculator.co.uk for the sole trader result and this calculator for the limited company model. Enter the same underlying profit figure on both. Keep pension, other income and extraction level identical. Compare personal take-home and total tax at identical commercial inputs.
Yes. The practical steps involve registering a new company, potentially transferring contracts, setting up a PAYE payroll and ceasing sole trader activity. An accountant can plan the transition to minimise tax and administrative disruption, including managing any overlap in tax years during the transition period.
The limited company tax calculator turns this guidance into a concrete estimate for corporation tax, dividends and personal take-home, based on 2026/27 HMRC rates.