Self-Employed Tax Calculator
Calculate your tax bill as a freelancer or self-employed for the 2025/26 tax year.
Total income minus allowable business expenses
Results
Due 31 Jan & 31 Jul (50% each)
Tax Breakdown
Key Deadlines
31 Jan
File & Pay
31 Jul
2nd Payment
Updated for 2025/2026
UK tax year
Based on HMRC rates
Official tax bands
Estimates only
Not financial advice
About the Self-Employed Tax Calculator
Our self-employed tax calculator helps freelancers, sole traders, and contractors estimate their annual tax bill including income tax and National Insurance contributions. Understanding your tax liability is essential for effective cash flow management and avoiding unexpected bills at the end of the tax year.
The calculator uses your annual profit (total income minus allowable business expenses) to determine your income tax across all bands, Class 2 National Insurance (a flat weekly rate), and Class 4 National Insurance (calculated as a percentage of your profits). It also estimates your payments on account if applicable.
This tool is designed for self-employed individuals in England, Wales, and Northern Ireland operating as sole traders. If you operate through a limited company, you should use our dividend tax calculator instead. Always consult with an accountant for complex situations involving multiple income sources or international work.