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
£102,011.90
Monthly net income
£8,500.99
Weekly net income
£1,961.77
Quarterly set-aside
£33,994.05
Set aside £33,994.05 per quarter. Payment dates are typically 31 January and 31 July.

Full breakdown

Annual profit£170,000.00
Income tax£63,331.50
Class 4 NI£4,656.60
Student loan£0.00
Total deductions£67,988.10
Net income£102,011.90

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% £57,430.00 £25,843.50

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% £119,730.00 £2,394.60