Self-Employed Tax Calculator
This calculator estimates an individual's UK tax on self-employment profits. It is not a limited-company or full tax-return calculator.
Your self-employment
Income Tax rates are devolved to Scotland. National Insurance and the Trading Allowance are the same across the UK.
All self-employment income before business expenses.
Business costs you expect to claim against this income.
Income taxed separately from your self-employment profit — for example PAYE salary or a taxable pension.
About this calculation
Calculator scope, assumptions and official sources.
Self-employment tax guide
Turnover versus profit
Turnover is everything the business invoiced or received. Profit is what is left after allowable business costs, and it is profit — not turnover — that is taxed. The money sitting in your business account is not a guide either: it still contains the tax you owe, and it may be missing costs you have incurred but not yet paid. Work from your figures for the year, not from the balance today.
Figures are estimates and may differ from your Self Assessment calculation. This is not tax, legal or financial advice.
Employed as well as self-employed? Open the Income Tax Calculator. Negotiating a salaried role on a take-home target? Open the Net to Gross Salary Calculator. Thinking about a limited company? Open the Director Salary and Dividend Calculator.
Related guides
- Self Assessment Payments on Account ExplainedWhen payments on account apply, how January and July bills are built, and what a first Self Assessment year means.Read guide
- Trading Allowance ExplainedWhen sole traders can use the £1,000 Trading Allowance instead of deducting actual expenses.Read guide
- National Insurance for Sole TradersClass 4 and Class 2 National Insurance for the self-employed — thresholds, rates and how they appear on your bill.Read guide
- Allowable Expenses for Sole TradersWhat counts as an allowable business expense, and when the Trading Allowance is better.Read guide
- Registering as Self-EmployedWhen and how to register for Self Assessment as a sole trader, and what happens in your first year.Read guide