Sole Trader vs Employed Take-Home Pay Calculator 2026/27

Take your total trading profit, deduct allowable business expenses to arrive at net profit, then apply the same Personal Allowance and income tax bands as an employee, plus Class 4 National Insurance (6% between £12,570 and £50,270, 2% above) instead of employee Class 1 NI. Unlike employees, sole traders pay their tax and NI via Self Assessment, usually in two payments on account plus a balancing payment.

Yes, at the main rate. Class 4 NI for the self-employed is 6% on profits between £12,570 and £50,270 (and 2% above), compared with 8% Class 1 NI for employees on the same band. There is also no employer NI equivalent for the self-employed, since there is no employer — a genuine structural saving compared with employment, though it is offset by the lack of employer pension contributions, statutory sick pay, and other employment protections.

Class 2 NI was abolished as a compulsory charge for most self-employed people from April 2024. Self-employed profits above the Small Profits Threshold (£7,105 for 2026/27) are treated as if Class 2 has been paid, for State Pension and contributory benefit purposes, without an actual charge. Below that threshold, voluntary Class 2 contributions of £3.65/week can still be paid to protect your National Insurance record.

Wholly and exclusively business expenses: stock and materials, business insurance, a proportion of home costs if working from home, business mileage (at HMRC's simplified 45p/25p per mile rates or actual costs), professional subscriptions, accountancy fees, and capital allowances on equipment and vehicles. Deducting these reduces net profit, and therefore the income tax and Class 4 NI due — this is the single biggest lever a sole trader has to reduce their tax bill legitimately.

If your Self Assessment tax bill is over £1,000 (and less than 80% of your tax was collected at source), you must make two Payments on Account toward next year's tax bill — 50% by 31 January and 50% by 31 July — in addition to any balancing payment for the year just ended. This front-loads cash flow significantly in your first year or two of self-employment, catching many new sole traders off guard.

At almost every profit level, because Class 4 NI (6%/2%) is lower than employee Class 1 NI (8%/2%) on the same band, and because there is no equivalent to the employer NI charge that an employer effectively bears (though this is a cost to the employer, not the employee, in the employed comparison). The gap in take-home terms is usually a few hundred pounds a year at typical income levels, widening slightly at higher profits.

No. A sole trader has no employer, so there is no statutory sick pay, no holiday pay, and no automatic pension contribution — any pension saving comes entirely from the sole trader's own pocket, with tax relief but no employer top-up. This is the trade-off against the modestly lower NI rate and the flexibility of self-employment.

It depends on profit level and how much is drawn out. At higher profit levels, operating through a limited company and paying yourself a low salary plus dividends can reduce overall tax and NI compared with sole trader status, because dividends are not subject to National Insurance at all. However, incorporation brings additional compliance costs (Companies House filing, corporation tax returns) and reduces flexibility, so the decision should be based on real numbers, not a rule of thumb.

VAT registration (compulsory above £90,000 taxable turnover) does not directly change income tax or Class 4 NI, since VAT is a tax on the business's sales, collected from customers and paid to HMRC — it is not part of the sole trader's own income. However, VAT registration adds administrative burden and can affect competitiveness against non-VAT-registered rivals, which indirectly affects achievable profit margins.