About Global Tax
An independent publisher of country-specific tax and financial calculators — starting with the United Kingdom.
Last updated
Global Tax builds accurate, transparent tax and money calculations for real-life decisions, localised by country, region and tax year. We start with the United Kingdom for tax year 2026/27, with Canada and Australia planned next.
What makes us different
- Every calculator shows its tax year, jurisdiction, formula, assumptions and official sources.
- Rules are versioned by tax year and covered by automated tests at every threshold.
- Your inputs stay in your browser — we do not collect the numbers you enter.
- Advertising never influences results and never sits between your inputs and your answer.
Contact and corrections
Questions, corrections or partnership enquiries: [email protected]. If you are reporting a possible error, please include the calculator, the inputs you used and the result you expected.
We cannot give personal tax advice. For your own tax affairs, contact HMRC or a qualified adviser. See our disclaimer.