At what profit level should I incorporate to a limited company?

The break-even is roughly £40,000-£60,000 of profit, depending on extraction strategy. Below that, sole trader is usually simpler and similarly tax-efficient. Above £70,000, Ltd Co typically saves £2,000-£8,000/year primarily through lower corporation tax (19% vs 20%+8% personal) and tax-efficient dividend extraction. Add employer pension contributions to widen the advantage further.

Is a limited company always more tax-efficient than sole trader?

No. Below ~£40,000 profit it’s usually break-even or slightly worse after extra accountancy costs (£600-£2,500/year). It’s also worse if you must take every penny of profit personally each year, your work is "inside IR35", or your spouse doesn’t work and can’t share dividends. The advantage grows with profit level and ability to retain or salary-sacrifice into pension.

Can I switch from sole trader to limited company?

Yes - common transition. Steps: form the Ltd Co at Companies House; transfer the business as a going concern (potential tax considerations, get advice); register for corporation tax; open business bank account; move customers/contracts to the new entity. Many do this at the start of a tax year for clean accounting. The reverse switch (Ltd Co back to sole trader) is also possible but more procedural - involves striking off the company.

Sole trader vs limited company UK 2026/27

Last reviewed by the UK Tax Drag editorial team · 12 May 2026 · How we review · Next review due 12 November 2026 · See what changed · Report an error

6-minute read

For UK 2026/27: sole trader is usually best below ~£40,000 profit (simpler, similar tax, less admin). Limited company typically saves £1,500-£6,000+ per year above ~£60,000 profit, primarily through corporation tax (19%) being lower than personal tax (20%+8% NI), and tax-efficient extraction via dividends (£500 allowance at 0%, then 8.75%/33.75%/39.35%). Critical caveats: IR35 risk if your work resembles employment; extra admin cost (£500-£2,000/year accountancy); and the £60,000 profit threshold can be lower or higher depending on whether you need all the profit personally each year.

The break-even chart

Net take-home after all UK tax: sole trader vs Ltd Co (full extraction)

Net annual take-home after income tax, NI (sole trader) or corporation tax + dividend tax (Ltd Co with optimal £12,570 salary + dividends). Assumes 2026/27 rates, no Scottish bands, no employment allowance, single director, full extraction.

Sole trader - the simple option

You are the business. Profits flow directly to you and are taxed as personal income (20%/40%/45% income tax + 6%/2% Class 4 NI).

Pros	Cons
Simple registration via SA1	No legal separation - personal liability for debts
One annual tax return (until MTD ITSA)	Tax rate hits 42% at £50,270 profit
Free to operate (no Companies House fees)	No way to defer tax by retaining profits
No dividend tax to consider	Personal credit affected by business performance
Pension contributions get personal tax relief	Selling the business is harder

Limited company - the structure for higher earners

The company is a separate legal entity. Profits face corporation tax first (19% small profits / up to 25% main rate). You extract via salary + dividends, with personal tax on the extracted amounts.

Pros	Cons
Lower headline tax rates above £40-50k profit	£12-£50/year Companies House filing fee + admin
Limited liability for shareholders	Annual accounts + corporation tax return + Self Assessment
Can retain profits in company at 19% CT	Accountancy typically £600-£2,500/year
Spousal share splitting (if genuine)	IR35 risk if work resembles employment
Employer pension contributions deductible	Director loans / overdrawn DLA can trigger S455 tax
Sale of company often more tax-efficient (BADR at 10%)	Dividend tax rates have risen sharply since 2022

The break-even maths - 2026/27

£50,000 profit comparison

Sole trader:

Profit: £50,000
Income tax: £7,486 (basic-rate on £37,700)
Class 4 NI: £2,257 (6% on £37,700)
Total tax: £9,743
Net: £40,257

Limited company (£12,570 salary + £37,430 dividends):

Profit before salary: £50,000
Salary £12,570 (no employee NI below threshold; employer NI ~£478 if Employment Allowance not available)
Pre-tax profit after salary: £37,430 - 478 = £36,952
Corporation tax 19%: £7,021
Dividend pool: £29,931
Dividend tax: £500 at 0%, £29,431 at 8.75% = £2,575
Total tax (CT + Div + Employer NI): £10,074
Net: £39,926

At £50,000 profit, sole trader is roughly £330/year better. The £600+ extra accountancy cost for Ltd Co makes it materially worse. Stay sole trader.

£80,000 profit comparison

Sole trader:

Profit: £80,000
Income tax: £19,432
Class 4 NI: £2,851 (6% × £37,700 + 2% × £29,730)
Total: £22,283
Net: £57,717

Limited company (£12,570 salary + £67,430 dividends, with pension contribution):

Salary: £12,570; pension employer contribution: £15,000 (reduces CT)
Pre-tax profit after salary + pension: £80,000 - 12,570 - 15,000 - 478 = £51,952
Corporation tax: £51,952 × 26.5% marginal = £13,767
Dividend pool: £38,185
Dividend tax: £500 at 0%, £37,200 at 8.75%, £485 at 33.75% = £3,419
Total tax: £17,664 + pension £15k in retirement pot
Personal cash: £47,336 + £15k tax-deferred pension

At £80,000 profit, Ltd Co with pension extraction is roughly £4,600/year better on cash + £15,000 deferred wealth in pension. Strong case to incorporate.

When sole trader STAYS better even at higher incomes

You need every penny of profit personally each year - no scope to retain in company
Your spouse does not work and you cannot share dividends
Your industry is high IR35 risk and HMRC scrutiny is intense
You hate admin / would not properly maintain Companies House compliance
Your business is wound down within 2-3 years - incorporation costs may not amortise

The IR35 dimension - why some contractors avoid Ltd Co entirely

IR35 changes the mathsIf your contract work falls "inside IR35" (assessed as disguised employment), most of the Ltd Co tax advantages disappear. You pay deemed-employment income tax + NI on most of the contract value. For inside-IR35 contractors, sole trader or umbrella is usually simpler than Ltd Co with no tax advantage. Use our IR35 employment status checker if uncertain.

The decision framework

Profit under £30,000Sole trader. Below the basic-rate band, the Ltd Co advantages disappear entirely. Don’t add admin cost without clear benefit.

Profit £30,000-£50,000Usually sole trader. Ltd Co is only worth it if you can split dividends with a spouse or retain a meaningful portion in the company at 19% CT.

Profit £50,000-£70,000The break-even zone. Ltd Co can save £500-£2,000/year on full extraction, more if pension contributions or spousal dividends are used. Worth running personal numbers carefully.

Profit £70,000-£150,000Ltd Co usually wins by £2,000-£8,000/year. Combine with employer pension contributions for maximum tax efficiency.

Profit £150,000+Ltd Co almost certainly wins. Additional rate dividend tax (39.35%) is still below additional-rate income tax (45%) once CT savings are factored in. Pension and salary-sacrifice tools are stronger inside a company.

Compare scenarios precisely

The dividend vs salary calculator models the optimal extraction at any profit level, accounting for corporation tax, dividend tax and personal allowances.

Open the dividend vs salary calculator

Sources and references

Corporation tax rates from gov.uk Corporation Tax. Dividend tax rates from gov.uk tax on dividends. Class 4 NI from gov.uk Class 4 NI. IR35 rules from gov.uk IR35. Companies House fees from Companies House.

UK Tax Drag is educational and not regulated financial, tax, legal or business advice - see the disclaimer for the full position. Always verify current rates and rules at the original government sources before acting.

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Sole trader vs limited company - UK 2026/27