Self-Employed Tax Calculator UK (2026/27)

Estimate take-home profit after income tax and Class 4 National Insurance, with optional student loan deductions. Results update instantly and include a quarterly set-aside estimate for payments on account.

Updated for 2026/27 · Reviewed by James Whitfield · Methodology and assumptions

£

Results

Annual net income
£77,583.40
Monthly net income
£6,465.28
Weekly net income
£1,491.99
Quarterly set-aside
£22,708.30
Set aside £22,708.30 per quarter. Payment dates are typically 31 January and 31 July.

Full breakdown

Annual profit£123,000.00
Income tax£41,700.00
Class 4 NI£3,716.60
Student loan£0.00
Total deductions£45,416.60
Net income£77,583.40

Income tax by band

Band Rate Taxable amount Tax
Basic rate 20.0% £37,700.00 £7,540.00
Higher rate 40.0% £74,870.00 £29,948.00
Additional rate 45.0% £9,360.00 £4,212.00

Class 4 NI by band

Range Rate Profit in band NI
£12,570 to £50,270 6.0% £37,700.00 £2,262.00
Above £50,270 2.0% £72,730.00 £1,454.60