Free UK Tax Calculators
Instant, accurate 2026/27 results for salary, dividends, pension contributions, tax codes and more. Every tool includes plain-English explanations and worked examples — not just a number.
Free calculators and checkers for employees and self-employed people. Every tool includes plain-English explanations, worked examples, and links to our guides — not just a widget.
Salary calculator
Take-home pay after Income Tax, NI, pension, and student loan — with worked examples and FAQs.
Compare salaries
Two scenarios side by side — job offers, pension changes, or Scotland vs England.
Self-employed
Class 2, Class 4, and income tax on profit, plus payments on account explained.
Tax code checker
Decode your HMRC tax code and see when to contact HMRC to fix it.
Payslip checker
Understand every line on your payslip — gross pay, tax, NI, pension and net pay, with a worked example.
Why is my tax high?
Emergency codes, second jobs, benefits in kind — every common cause with fixes.
SA deadlines
Every Self Assessment deadline with countdowns, checklists, and email reminders.
Dividend tax calculator
Calculate dividend tax by band for 2026/27 — enter salary and dividend income to see your liability.
Pension contribution calculator
See the real cost of pension contributions after tax relief and NI savings across all three contribution methods.
Stamp Duty calculator
Calculate SDLT for standard buyers, first-time buyers and second home / buy-to-let purchases.
Capital Gains Tax calculator
CGT on shares and property for 2026/27 — with the £3,000 annual exempt amount and correct band rates.
Rental income calculator
Tax on buy-to-let income including Section 24 mortgage interest restriction for higher-rate landlords.
Prefer reading first?
Our tools sit alongside detailed guides on payslips, tax codes, pensions, and refunds. If you are new to UK payroll tax, start with understanding your payslip or the emergency tax code guide.
Browse all guides