UK Limited Company vs Sole Trader Calculator
Compare take-home pay as a sole trader versus a limited company, using real 2026/27 Income Tax, National Insurance, Corporation Tax, and dividend tax rates.
Turnover minus allowable business expenses, before any personal tax.
Sole Trader vs Limited Company Take-Home
Sole Trader Take-Home
£32,868
Limited Company Take-Home
£31,633
Sole Trader
Limited Company
What Is the UK Limited Company vs Sole Trader Calculator?
Choosing between trading as a sole trader and forming a limited company is one of the first decisions most UK small business owners face. Sole trader profit is taxed once — through Income Tax and Class 4 National Insurance. A limited company's profit is effectively taxed twice — first as Corporation Tax on the company's profit, then again as dividend tax when that profit is paid out to you personally. This calculator compares take-home pay under both structures for the same amount of annual profit, using verified 2026/27 rates.
The conventional wisdom that a limited company is always more tax-efficient than sole trading dates back to when dividend tax rates were lower and Class 4 National Insurance was higher. Both of those have shifted: Class 4 has been cut to 6%, and dividend tax rates rose at the Autumn Budget 2025. This calculator uses the actual current rates rather than that older assumption, so the result may surprise you — see the worked examples below.
UK Limited Company vs Sole Trader Calculator Formula
Sole Trader Take-Home = Profit − Income Tax − Class 4 NI (6% / 2%)
Ltd Company Take-Home = Net Salary + (Dividends − Dividend Tax), Dividends from Profit After Corp. Tax
How Is the UK Limited Company vs Sole Trader Calculator Calculated?
Sole trader profit is taxed with the standard £12,570 Personal Allowance (tapered above £100,000 adjusted income) and 20% / 40% / 45% Income Tax bands, plus Class 4 National Insurance at 6% on profit between £12,570 and £50,270, and 2% above that — one tax layer, applied directly to the profit.
Limited company is modeled as a single-director company with no other employees, paying a director's salary at the £12,570 Personal Allowance (avoiding Employee NI and Income Tax on the salary itself, though Employer NI of 15% still applies above the £5,000 threshold since single-director companies don't qualify for the Employment Allowance). Remaining profit is taxed at Corporation Tax (19% up to £50,000, 25% above £250,000, with marginal relief between, giving an effective 26.5% marginal rate in that band), then the full remainder is assumed extracted as dividends in the same year and taxed at 2026/27 dividend rates (10.75% basic, 35.75% higher, 39.35% additional, after a £500 allowance) — a second tax layer on top of Corporation Tax.
UK Limited Company vs Sole Trader Calculator Example
£40,000 annual profit: sole trader take-home is £32,868 after Income Tax and Class 4 NI. Limited company take-home is £31,633 after Corporation Tax and dividend tax — sole trader comes out about £1,236 ahead.
£70,000 annual profit: sole trader take-home is £51,911, versus £51,043 as a limited company — sole trader ahead by about £869.
£130,000 annual profit, where the £100,000 Personal Allowance taper is active: sole trader take-home is £80,812, versus £78,973 as a limited company — sole trader ahead by about £1,839, with the gap widening as profit rises, since combined Corporation Tax and higher-rate dividend tax exceeds combined Income Tax and Class 4 NI once profits climb into higher bands on both sides.
How to Use the UK Limited Company vs Sole Trader Calculator
Step 1
Enter your expected annual business profit (turnover minus allowable expenses).
Step 2
Compare sole trader and limited company take-home pay side by side.
Step 3
Review the breakdown to see exactly how much each tax layer — Income Tax, Class 4 NI, Corporation Tax, dividend tax — contributes.
Step 4
Weigh the tax result alongside non-tax factors like limited liability protection and professional credibility before deciding.
Benefits
- Uses verified 2026/27 Income Tax, Class 4 National Insurance, Corporation Tax, and dividend tax rates, including the Autumn Budget 2025 dividend tax increase.
- Shows the full breakdown for both structures, not just a single take-home number.
- Applies the £100,000 Personal Allowance taper correctly on both sides for higher profit levels.
- Challenges outdated assumptions about limited company tax efficiency with current, calculated figures.
- Free, instant, and runs entirely in your browser.
Common UK Limited Company vs Sole Trader Calculator Scenarios
Scenario 1
Deciding whether to incorporate a growing sole trader business.
Scenario 2
Understanding whether a limited company is still the tax-efficient choice it used to be under current rates.
Scenario 3
Explaining the double taxation mechanics of Corporation Tax plus dividend tax to a client or accountant.
Scenario 4
Comparing structures before registering a new business with HMRC or Companies House.
Scenario 5
Revisiting an existing limited company structure after a dividend tax or Corporation Tax rate change.
Understanding Your Result
This calculator often shows sole trader ahead on pure take-home pay under 2026/27 rates — a real reversal of older conventional wisdom, driven by the 2025 dividend tax increase and the lower 6% Class 4 rate. That doesn't mean a limited company is a bad choice: it offers limited liability protection (personal assets are generally separated from business debts), can appear more credible to some clients, and allows more flexible profit retention and extraction timing across tax years — none of which this calculator prices in.
The gap also isn't fixed — it depends heavily on the assumptions used here (a single director, full same-year dividend extraction, no pension contributions from the company). Strategies like employer pension contributions paid directly from company profit, or splitting income across two directors, can meaningfully change a limited company's result and are common ways accountants improve on this baseline.
Tips
- Employer pension contributions paid directly from company profit are a company expense before Corporation Tax and aren't personally taxed on the way in — this is one of the most common ways limited company owners close or reverse the gap shown here, and isn't modeled in this baseline calculation.
- A limited company can retain profit across tax years rather than extracting it all immediately, which this calculator doesn't model but can meaningfully affect real-world outcomes.
- Two directors (for example, spouses) can each draw a salary and dividend allowance, which changes the numbers substantially compared to this calculator's single-director baseline.
- Limited liability protection has real value beyond tax — sole traders are personally liable for business debts in a way limited company directors generally aren't.
- Revisit this comparison whenever Corporation Tax, dividend tax, or Class 4 National Insurance rates change, since the historic pattern (limited company usually wins) has reversed under current rates.
Common Mistakes
- Assuming a limited company is automatically more tax-efficient without checking current rates — this calculator shows that assumption often no longer holds.
- Not accounting for Corporation Tax at all when comparing gross company revenue to sole trader take-home.
- Ignoring non-tax factors like limited liability protection, which can outweigh a modest take-home pay difference.
- Forgetting that this baseline doesn't model pension contributions, profit retention, or multi-director structures, all of which commonly change the real-world result for a limited company.
- Switching structures purely for a small tax difference without accounting for the extra accounting, filing, and compliance costs a limited company carries.
Frequently Asked Questions
Is a limited company still more tax-efficient than a sole trader?
Not always, and often not at all under 2026/27 rates in this calculator's baseline scenario — the combination of Corporation Tax plus increased dividend tax can exceed sole trader Income Tax plus the now-lower 6% Class 4 National Insurance rate, especially as profits rise. Strategies like employer pension contributions can change this.
Why did the comparison change from what I might have heard before?
Two rate changes moved this: Class 4 National Insurance was cut from 9% to 6% over recent years, and dividend tax rates rose at the Autumn Budget 2025 (basic rate from 8.75% to 10.75%, higher rate from 33.75% to 35.75%). Together, these narrowed or reversed the traditional limited company advantage.
What non-tax factors should I consider besides take-home pay?
Limited liability protection (separating personal assets from business debts), perceived credibility with some clients, and more flexible profit extraction timing across tax years are all real limited company advantages this calculator doesn't price in.
Does this calculator account for pension contributions from the company?
No — this is a deliberate baseline simplification. Employer pension contributions paid directly from company profit before Corporation Tax are one of the most effective ways limited company owners improve on this result, and aren't modeled here.
Why does the limited company model use a £12,570 director salary?
It's a widely used baseline for single-director companies — high enough to build a qualifying National Insurance year and use the full Personal Allowance, while avoiding Employee NI and Income Tax on the salary itself.
What if I have two directors, like a husband-and-wife company?
This calculator models a single director only — two directors could each draw a salary and dividend allowance, which meaningfully changes the limited company result compared to this baseline and isn't modeled here.
Does this apply to Scotland's Income Tax bands?
No — this uses the England, Wales, and Northern Ireland Income Tax bands. National Insurance, Corporation Tax, and dividend tax rates are the same UK-wide regardless of which Income Tax bands apply.
What accounting and compliance costs come with a limited company that a sole trader doesn't have?
Limited companies must file annual accounts and a Company Tax Return with HMRC and Companies House, generally requiring more formal bookkeeping and often professional accountancy support — sole traders only file a simpler Self Assessment return.
Does this calculator model retaining profit in the company instead of extracting it all?
No — it assumes full extraction as dividends in the same tax year for a clean comparison. Retaining profit changes the timing of dividend tax but not the underlying Corporation Tax liability, which is due regardless of extraction timing.
Is this the same comparison as the IR35 calculator?
It's related but different — the UK Contractor IR35 Take-Home Calculator compares a limited company taxed inside IR35 (as deemed employment) against outside IR35 (this calculator's limited company model). This calculator instead compares that same limited company model against genuine sole trader self-employment.
Should I switch from sole trader to limited company based on this alone?
No — use this as one input among several, alongside liability protection, client expectations, and compliance costs, and speak to a qualified accountant before changing your business structure.
Can I share this comparison as an image?
Yes — tap Share and, on supported devices, your result is shared as a branded image card, not just a text link.
References
Important Information
This calculator provides estimates for informational purposes only and is not tax, legal, or financial advice. Uses confirmed 2026/27 HMRC Income Tax, National Insurance, Corporation Tax, and dividend tax rates (England/Wales/Northern Ireland); models a single-director limited company with full same-year dividend extraction and no pension contributions, as a simplifying baseline. Confirm your specific situation with HMRC or a qualified accountant before choosing a business structure.
Last updated: August 2026