Self-Employed Tax and NI Calculator (2026/27)

Work out the Income Tax and National Insurance you'll pay on your self-employed profits for 2026 to 2027, and what you'll take home.

UK, tax year 2026 to 2027 Free, no sign-up Runs in your browser
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Your take-home pay

— / year
  • Per month—
  • Total tax and NI—
  • Income Tax—
  • Class 4 National Insurance—
  • Personal Allowance—
  • Effective rate—

Class 2 National Insurance is treated as paid if your profits are £7,105 or more.

Tax and take-home at different profits

ProfitTax and NITake-homeEffective rate
Enter your numbers above to see this table.

How to use this calculator

  1. Enter your profit: what you earned from self-employment in the tax year, minus allowable business expenses.
  2. Choose where you live. Scotland has its own Income Tax bands; National Insurance is the same across the UK.

2026 to 2027 rates used

ItemEngland, Wales, NIScotland
Personal Allowance£12,570 (reduced by £1 for every £2 over £100,000)Same
Income Tax20% to £50,270; 40% to £125,140; 45% above19%, 20%, 21%, 42%, 45%, 48% (six bands)
Class 4 NI6% on profits £12,570 to £50,270; 2% aboveSame
Class 2 NITreated as paid at £7,105+ profit; voluntary £3.65 a week belowSame

How it's calculated

Personal Allowance = £12,570, less £1 for every £2 of profit over £100,000 Taxable income = profit − Personal Allowance Income Tax = taxable income through the 2026 to 2027 bands Class 4 NI = 6% × (profit between £12,570 and £50,270) + 2% × (profit above £50,270) Take-home = profit − Income Tax − Class 4 NI

Worked example

Priya is a self-employed designer in England with £45,000 profit in 2026 to 2027.

Taxable income = 45,000 − 12,570 = 32,430 Income Tax = 32,430 × 20% = 6,486.00 Class 4 NI = (45,000 − 12,570) × 6% = 1,945.80 Take-home = 45,000 − 6,486 − 1,945.80 = £36,568.20

Priya keeps £36,568.20, about £3,047 a month. If she lived in Scotland, her Income Tax would be £6,882.05 and her take-home £36,172.15.

What this calculator doesn't cover

  • Other income, such as a salary, savings interest, rental income or dividends.
  • Pension contributions, Gift Aid, Marriage Allowance and student loan repayments.
  • Tax years other than 2026 to 2027.

Frequently asked questions

When do I pay this tax?

Through Self Assessment. The tax for 2026 to 2027 is due by 31 January 2028, and you may also have to make payments on account towards it. Our payments on account calculator shows the dates and amounts.

Do I still pay Class 2 National Insurance?

Not usually. Since April 2024, self-employed people with profits of £7,105 or more (for 2026 to 2027) get Class 2 treated as paid. Below that, you can pay it voluntarily to protect your State Pension.

How much should I put aside for tax?

Use the effective rate above for this year's tax. In your first year, also plan for payments on account, which can mean paying up to one and a half years' tax in the same January.

Sources (2026 to 2027): Income Tax rates, Scottish Income Tax, self-employed National Insurance.

Keep going

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Disclaimer: results are estimates for planning only and are not tax, legal or financial advice. Rules and rates vary by country, state and personal situation. Check with a qualified accountant before making decisions. Read the full disclaimer.

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