2025/26 Tax Year
UK Self-Employment Tax Calculator
Calculate your income tax, National Insurance, and how much to set aside each month. Free, instant, no sign-up required.
Your Details
£
Total income from self-employment before expenses
£
Allowable business expenses (equipment, travel, subscriptions, etc.)
Your Tax Summary
Taxable Profit£45,000.00
Personal Allowance£12,570.00
Income Tax£6,486.00
National Insurance (Class 4)£1,945.80
Total Tax£8,431.80
Net Income (after tax)£36,568.20
Effective Tax Rate18.7%
Income Tax Breakdown
Personal Allowance (0%)
£12,570.00£0.00
Basic Rate (20%)
£32,430.00£6,486.00
Higher Rate (40%)
£0.00£0.00
Additional Rate (45%)
£0.00£0.00
National Insurance
£12,570 – £50,270 (6%)£1,945.80
Total NI£1,945.80
Class 2 NI abolished from April 2024
Set Aside & Payments
£702.65
set aside per month
Payment on Account (each)£4,215.90
31 January
1st payment
31 July
2nd payment
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