Free UK tax calculators for 2025/26
GoForma's suite of free UK tax calculators helps you estimate your tax position in seconds. Whether you're a contractor weighing inside vs outside IR35, a limited company director planning your salary-and-dividend split, a sole trader budgeting for January, or anyone working out a take-home from a gross salary - there's a calculator below for it. Every result is reviewed annually by ACCA and AAT qualified accountants against the live HMRC rates and allowances.
Which calculator do I need?
- Working out gross-to-net pay for any salary? Use the Salary calculator.
- Comparing contractor structures? Try the Take-home pay calculator (limited company vs sole trader vs umbrella).
- Inside or outside IR35? Run the IR35 quick assessment.
- Limited company director? Try the Corporation Tax calculator and the Dividend tax calculator.
- Sole trader budgeting for Self Assessment? Use the Self-employed tax calculator.
- Sole trader vs limited company decision? Use the Sole trader vs limited company calculator.
- VAT registration on the horizon? Check the VAT registration estimator and the Standard vs Flat-Rate VAT calculator.
- Capital Gains disposal? Use the Capital Gains Tax calculator.
How our calculators stay accurate
Every calculator is updated each tax year against the live HMRC rates for the current 2025/26 year, including the 18%/24% Capital Gains Tax bands, the 3,000 pound annual exempt amount, the 12,570 pound personal allowance, the 50,270 pound higher-rate threshold, the 100k-125,140 pound personal allowance taper, the 19%-25% Corporation Tax marginal-rate band, and the 500 pound dividend allowance.
Use a calculator, then talk to a real accountant
Calculators are great for working out the headline number - your take-home pay, your CGT, your Corporation Tax bill. They don't model the dozens of judgement calls that affect your actual tax position: which expenses to claim, when to invoice, whether to incorporate, when to take dividends versus leave profit in the company. Once you've used a calculator and have your baseline number, book a free 20-minute call with one of our qualified accountants to talk through your specific situation.
