Employee vs Self-Employed Tax UK

Yes — UK income tax bands and rates are identical: 20% basic, 40% higher, 45% additional, with the same £12,570 Personal Allowance and £100,000 taper. The difference is in National Insurance, allowable expenses, and how the tax is collected.

Employees pay Class 1 NI: 8% from £12,570 to £50,270, 2% above. Employers pay a separate 15% Class 1 (secondary) on top, above a £5,000 threshold — this is a direct employer cost, not deducted from the employee's pay. Self-employed pay Class 2 (voluntary) for State Pension credits and Class 4: 6% from £12,570 to £50,270, 2% above. Self-employed Class 4 is materially lower than employee Class 1 — a £40k earner saves roughly £550/year on NI alone.

Yes. Self-employed taxpayers can deduct any cost that is "wholly and exclusively for the trade" — accountancy fees, business mileage, home office, phone, professional subscriptions, training, equipment via capital allowances. Employees are limited to a narrower set under section 336 ITEPA (necessarily incurred), and most home-office or commute costs are disallowed.

Yes. Self-employed people earning over the Small Profits Threshold (£7,105 for 2026-27) get automatic Class 2 NI credits for State Pension, with nothing to pay. Below that threshold, you can pay voluntary Class 2 (£3.65/week for 2026-27) to keep the qualifying year. Self-employed are not eligible for Statutory Sick Pay or Statutory Maternity Pay; they can claim Maternity Allowance via DWP instead.

Employees pay through PAYE every payday — tax is settled in real time. Self-employed file Self Assessment by 31 January and pay the bill by the same date, plus payments on account on 31 Jan and 31 July if liable. Cash-flow planning matters more for self-employed — many set aside ~25-30% of income for tax + NI.

Employees often have a workplace pension with employer contributions (minimum 3%) and auto-enrolment from age 22. Self-employed must arrange their own pension — personal pension or SIPP — and get tax relief at marginal rate via Self Assessment. The annual allowance is £60,000 for both.

In 2025-26 at £50,000 gross: an employee on PAYE keeps roughly £39,800 after tax and NI. A self-employed sole trader with the same £50,000 net profit (no expenses claimed beyond the personal trading allowance) keeps roughly £40,400 — about £600 more per year, mostly from the lower Class 4 NI. Add even modest deductible expenses and the gap widens.

Not for the tax bill alone any more. If you draw all your profit out, it is ahead only between roughly £60,500 and £60,500 of profit, and by under £1 a year — less than the extra accountancy cost in 2026-27 — Class 4 NI was cut to 6%, employer NI rose to 15% from a £5,000 secondary threshold, and dividend basic/higher rates rose to 10.75%/35.75% on 6 April 2026, and the three together wiped out the old "above ~£50,000 incorporate" rule of thumb. A limited company still makes sense if you can leave profit inside it at 19-25% Corporation Tax rather than extracting it, or for limited liability and client preference — against accountancy costs (£500-£1,500/year), Companies House filings, and IR35 risk if working for one client. Use our contractor comparison calculator for a side-by-side.