UK Self-Employed National Insurance (NICs) & Tax Calculator
Estimate UK sole trader net profits, income tax, and Class 4 National Insurance.
UK Self-Employed Tax & NICs Calculator
Plan sole trader income tax and Class 4 National Insurance contributions (NICs) on business profits.
Business Profits
Deduction Details
What is the UK Self-Employed National Insurance (NICs) & Tax Calculator?
Calculate UK self-employed taxes. Estimates income tax and Class 4 National Insurance contributions (NICs) on sole trader profits.
How Does the UK Self-Employed National Insurance (NICs) & Tax Calculator Work?
1. Input annual business profits. 2. View net business income, income tax, and Class 4 NICs deductions.
Formula & Calculation Method
Applies Personal Allowance (£12,570). Computes income tax bands (20%, 40%, 45%) and Class 4 NICs (6% on profits up to £50,270; 2% above that).
Example Calculation
Profits £45,000. Personal allowance = £12,570. Taxable profits = £32,430. Income Tax = £6,486. Class 4 NICs = 6% on (£45k - £12,570) = £1,946. Net income = £36,568.
Frequently Asked Questions
Applies Personal Allowance (£12,570). Computes income tax bands (20%, 40%, 45%) and Class 4 NICs (6% on profits up to £50,270; 2% above that).
Disclaimer: This tool is provided for informational and calculation purposes. Output values are estimates based on standard user inputs.