Benefit 1 - Tax efficiency (the headline)
Limited companies pay Corporation Tax on profits (19-25% in 2026), then you extract profits via: - Small salary up to personal allowance (£12,570) - tax-free - Dividends up to band limits - taxed at 8.75% / 33.75% / 39.35% - Pension contributions - tax-deductible business expense
Comparison at £75,000 profit/equivalent:
| Structure | Net to you |
|---|---|
| PAYE employee | ~£54,000 |
| Sole trader | ~£53,500 |
| Limited Co (outside IR35) | ~£60,000-62,000 |
The £6-8k advantage at £75k comes from the dividend-rate vs employee-NI difference + pension capacity.
Benefit 2 - Personal liability protection
Sole traders are personally liable for business debts + litigation. The company structure puts a legal firewall between you + the business.
Practical implications: - If a client sues your business for £100k damages, only the company is liable (unless personal negligence) - Personal assets (home, savings) are protected - Business creditors can't pursue you personally (with some exceptions like personal guarantees)
This matters most for: - Consultancy with advice/deliverables clients rely on - Anything involving health/safety/financial outcomes - Larger contract values - Multi-employee operations
Benefit 3 - Pension capacity
A limited company can contribute up to £60,000/year into your pension as a tax-deductible business expense. This: - Reduces Corporation Tax by 19-25% of the contribution - Doesn't count as your income (no Income Tax or NI on the way in) - Compounds tax-free in pension until drawn
Compare to PAYE pension at higher-rate: - £10,000 PAYE pension contribution: £4,200 saved in tax + NI; £5,800 of net pay cost - £10,000 Limited company pension contribution: £2,500 saved in Corporation Tax; £7,500 net cost from company profits
For high earners considering a £100k+ career, this is the single largest tax-efficient saving structure available in UK personal finance.
Benefit 4 - Professional credibility
For B2B + corporate contracting work, a limited company is often: - Required by client procurement (many corporates won't engage sole traders for non-trivial contracts) - Trusted by clients evaluating supplier risk - Necessary for invoicing certain enterprise clients - Treated as a "real business" for VAT registration, insurance, contracts
The costs
- Setup: £12 Companies House + £50-150 formation agent (optional)
- Annual accountant: £80-200/month (£1,000-£2,400/year)
- Annual filings: Companies House (annual accounts + confirmation statement)
- VAT registration if turnover > £90,000 (mandatory)
- Business bank account (often free or ~£5-15/month)
- Time overhead: 1-3 hours/month for admin even with an accountant
Total ~£1,200-£3,000/year of admin + accountant cost.
Breakeven analysis
The £1,200-£2,400/year admin cost is recovered at: - £35,000-£45,000 of profit if tax-efficient pension is utilised - £45,000-£55,000 of profit if pure salary + dividend extraction - £55,000+ profit for clear net advantage after admin
Below £40k profit, sole trader is usually simpler + nets similar.
Above £60k profit, limited company is clearly more efficient.
When NOT to go limited
- Profit < £35k/year for foreseeable future
- Inside-IR35 contracting only (no outside-IR35 work)
- Hate admin / accounting (sole trader is simpler)
- Want simple tax - sole trader Self Assessment is straightforward
In short
UK limited company in 2026 offers 4 benefits: tax efficiency at £40k+ profit, personal liability protection, £60k/yr pension capacity, professional credibility. Costs ~£1,200-£2,400/year in admin. Breakeven typically around £45-55k profit. Clear advantage above £60k for outside-IR35 contractors + high earners.