Skip to content

Cookies on Accounter

With your permission, Google Analytics measures visits to our public pages and Meta measures visits for our advertising. Essential storage always stays on. Change your mind any time with “Cookie settings” in the footer. Cookie policy

Accounter

Tax year 2026/27

UK income tax calculator 2026/27

For 2026/27, you pay no income tax on the first £12,570 of your income. On £40,000 of self-employed profit in England you pay £5,486.00 income tax and £1,645.80 Class 4 National Insurance, £7,131.80 in all (17.83% of your profit). Add your own employment, self-employed and property income below.

  • Free, no sign-up for the result
  • Scottish bands
  • Sources on GOV.UK

Rates last checked 12 October 2026 against GOV.UK

Enter profit after allowable expenses. Tax code 1257L. Dividends and savings interest are not included.

Income tax
£5,486.00
Class 4 National Insurance
£1,645.80
Effective rate
17.83%
Income tax and National Insurance for the year
ItemAmount
Total income£40,000.00
Personal allowance£12,570.00
Taxable income£27,430.00
Basic rate (20% of £27,430.00)£5,486.00
Income tax£5,486.00
Class 4 National Insurance£1,645.80
Total tax and National Insurance£7,131.80

Rates for the 2026/27 tax year from GOV.UK. Check HMRC guidance for your circumstances.

How the calculation works

  • One total, then the bands. Employment income, self-employed profit and property profit are added together. The personal allowance (£12,570 for tax code 1257L) comes off that total, and the rest is taxed band by band.
  • Class 4 National Insurance applies to self-employed profit only: 6% on profit between £12,570 and £50,270, and 2% above £50,270. It is separate from income tax and does not use the personal allowance.
  • Allowance taper: the personal allowance falls by £1 for every £2 of income above £100,000 and is nil from £125,140.
  • Scotland: Scottish taxpayers pay the six Scottish rates on this income. Class 4 National Insurance is the same everywhere in the UK.
  • Not included: dividend and savings income, Class 1 National Insurance on employment pay, Class 2, student loans, pension contributions, the trading and property allowances and other tax codes. Enter profit after allowable expenses.

This is an estimate for general information, not tax advice. To see what an employee takes home after Class 1 National Insurance, use the take-home pay calculator. Self-employed? Check the Self Assessment deadlines and whether Making Tax Digital applies to you.

Rates for 6 April 2026 to 5 April 2027

Last checked 12 October 2026.