Free UK Tax Tools

UK Tax Calculators and Financial Tools

Use Accensia’s free UK calculators to estimate take-home pay, compare salary and dividends, and understand potential tax outcomes. These tools are designed for employees, sole traders, freelancers, contractors and limited company directors.

Browse UK tax calculators

Choose a calculator below. Each tool includes a supporting guide to explain what the results mean and the assumptions used.

£

Salary to Net Calculator UK

Estimate take-home pay from an annual salary after Income Tax, National Insurance, pension and student loan deductions.

  • Annual and monthly take-home pay
  • PAYE deduction breakdown
  • Useful for employees and job planning
Open salary calculator →
Ltd

Salary vs Dividends Calculator

Compare different ways of taking income from a limited company using salary and dividends.

  • Salary and dividend comparison
  • Corporation tax estimate
  • Director take-home pay planning
Open dividend calculator →
CGT

Property CGT Calculator UK

Estimate potential Capital Gains Tax on a UK property disposal using purchase, sale and relief figures.

  • Property gain estimate
  • Allowance and relief prompts
  • Useful for planning and review
Open CGT calculator →
SE

Self-Employed Tax Calculator

A future calculator to estimate sole trader income tax, National Insurance and profit after allowable business expenses.

  • Sole trader profit estimate
  • Income tax and NI breakdown
  • Useful alongside expense tracking
Coming soon
VAT

VAT Registration Checker

A planned tool to help monitor taxable turnover and consider whether VAT registration may need reviewing.

  • Turnover monitoring prompts
  • VAT threshold awareness
  • Useful for growing businesses
Coming soon
VS

Limited Company vs Sole Trader Calculator

Compare the estimated tax and take-home pay of operating through a limited company or as a sole trader.

  • Limited company and sole trader comparison
  • Estimated tax and take-home breakdown
  • Useful when reviewing business structure
Open comparison calculator →
Free Downloads

Need spreadsheets as well as calculators?

Visit the Accensia templates hub to download free UK bookkeeping spreadsheets, including the self-employed expense tracker, mileage log, invoice tracker and VAT records checklist.

View Free Templates
Helpful Guides

Read the guides behind the numbers

Our articles explain common UK tax and bookkeeping topics in plain English, including tax bands, VAT, bookkeeping records, MTD and Self Assessment.

View Articles

How to use these tools

Enter your figures into the relevant calculator and review the estimated result. The calculators are designed to help you understand possible outcomes, not to provide a final tax calculation or personalised advice.

Who these calculators are for

These tools are mainly designed for UK employees, sole traders, freelancers, contractors, small business owners and limited company directors who want a clearer starting point for tax planning.

Important disclaimer

These calculators are provided for general guidance only and do not constitute tax, accounting, legal or financial advice. Results are estimates based on the information entered and simplified assumptions. Tax rules can change and your actual position may differ. Always seek professional advice where needed.