Free Tool
Self-Employment Tax Calculator
Calculate your income tax, Class 2 and Class 4 National Insurance contributions, and take-home pay as a sole trader for the 2025/26 tax year.
Your Business
Based on 2025/26 tax rates. This calculator assumes self-employment is your only income. It does not account for student loans, pension contributions, or other adjustments. For personalised advice, please book a free consultation.
Tax Breakdown
Annual Take-Home Pay
£48,832
£4,069/month
Revenue£80,000
Expenses-£15,000
Taxable Profit£65,000
Personal Allowance£12,570
Income Tax-£13,432
Class 2 NI-£179
Class 4 NI-£2,557
Total Tax-£16,168
Effective Tax Rate24.9%
Profit Breakdown
Take-home Income Tax NI
2025/26 Self-Employment Tax Rates
| Tax | Details |
|---|---|
| Personal Allowance | £12,570 (0% tax) |
| Basic Rate | 20% on £12,571 — £50,270 |
| Higher Rate | 40% on £50,271 — £125,140 |
| Additional Rate | 45% over £125,140 |
| Class 2 NI | £3.45/week (£179.40/year) if profit over £12,570 |
| Class 4 NI (lower) | 6% on profits £12,570 — £50,270 |
| Class 4 NI (upper) | 2% on profits above £50,270 |
Should you incorporate?
Depending on your profit level, it may be more tax-efficient to operate through a limited company. Our advisors can compare both structures and help you decide the best route for your business.
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