Self-Employed Tax Calculator UK (2025/26)

Estimate take-home profit after income tax, Class 2 NI, Class 4 NI and optional student loan deductions. Results update instantly and include a quarterly set-aside estimate for payments on account.

Updated for 2025/26 · Reviewed by James Whitfield · Methodology and assumptions

£

Results

Annual net income
£34,168.80
Monthly net income
£2,847.40
Weekly net income
£657.09
Quarterly set-aside
£3,915.60
Set aside £3,915.60 per quarter. Payment dates are typically 31 January and 31 July.

Full breakdown

Annual profit£42,000.00
Income tax£5,886.00
Class 2 NI£179.40
Class 4 NI£1,765.80
Student loan£0.00
Total deductions£7,831.20
Net income£34,168.80

Income tax by band

Band Rate Taxable amount Tax
Basic rate 20.0% £29,430.00 £5,886.00
Higher rate 40.0% £0.00 £0.00
Additional rate 45.0% £0.00 £0.00

Class 4 NI by band

Range Rate Profit in band NI
£12,570 to £50,270 6.0% £29,430.00 £1,765.80
Above £50,270 2.0% £0.00 £0.00