UK Self-Employed Tax Calculator
Estimate how much tax you’ll pay as a self-employed or freelancer in the UK for the 2026/27 tax year, including income tax and National Insurance.
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
About the Self-Employed Tax Calculator
Use this UK self-employed tax calculator to estimate your income tax, National Insurance and total tax bill for the 2026/27 tax year.
Our self-employed tax calculator helps freelancers, sole traders, and contractors estimate their annual tax bill including income tax and National Insurance contributions.
The calculator uses your annual profit to determine your income tax, Class 2 National Insurance, Class 4 National Insurance, and payments on account if applicable.
This tool is designed for self-employed individuals in England, Wales, and Northern Ireland operating as sole traders.