What TaxFly is
TaxFly is a free, independent UK tax reference. It publishes calculators, step-by-step checks, decision tools and plain-English guides that help employees, the self-employed, landlords, company directors and pensioners work out what they owe, what they may be missing, and which option costs them least. The public calculators and guides are free to use. An account unlocks features such as itemised check findings; see what is free.
Who runs it
TaxFly is owned and operated by Radiant Vibes Ltd, a private limited company registered in England and Wales under company number 17082185, with its registered office at Unit 50 New Lydenburg Street, London, England, SE7 8NE. You can check the company's details on the Companies House register.
We are an independent publisher. We are not HMRC, and we are not affiliated with or endorsed by any government department.
How our figures are built
Every rate, band, allowance and threshold comes from the official source: HMRC and GOV.UK for the UK, Revenue Scotland and the Scottish Government for Scottish income tax and LBTT, and the Welsh Revenue Authority for Land Transaction Tax. UK tax differs by nation, so we apply the rules for where you live rather than assuming England.
Our tools use published tax rates and explicit assumptions. Automated tests compare the shared tax functions with hand-worked examples and check selected calculator results against the shared functions. This helps catch errors, but it does not guarantee that every tool models every circumstance. Our how we calculate page sets out the method and the sources in full.
Keeping it current
Tax changes at every Budget and at the start of each tax year on 6 April. These changes are triggers for checking affected figures. Where a completed review is recorded, the page identifies the reviewer and date. The current tax year is 2026/27. Our editorial standards explain how guides are written, checked and updated, and what happens when we find a mistake.
Corrections
If you think a figure, rule or explanation is wrong, please tell us which page it is on and what you expected to see. Our corrections policy explains how to report a problem and how material changes and completed reviews are recorded.
How we are funded
TaxFly is paid for by advertising and by commission on some labelled partner links, such as accounting software. That is what keeps it free. No company can pay to change our figures, to be ranked higher or to be recommended, and a tool always shows every option it considered rather than just one. The details are in our affiliate disclosure.
What TaxFly is not
TaxFly gives general information and estimates, not personal tax, financial or legal advice, and we are not authorised by the Financial Conduct Authority to give regulated advice. For decisions that matter, check with HMRC or speak to a qualified accountant or tax adviser. See our disclaimer and terms of service.
Who writes and maintains TaxFly
Guides carry the author assigned in our editorial records. Calculator bylines identify the contributor or editorial team responsible for the page. Each links to a profile, so you can see that contributor's background and the work attributed to them.
Meet the authors and reviewers. Authorship and review are different: a byline does not mean a qualified adviser has reviewed the page. A completed review is shown separately, with its date and any review note. Our editorial standards explain these labels.
Contact the publisher
For editorial questions or corrections, email hello@taxfly.co.uk. Our contact page covers complaints and data requests. We cannot access your HMRC account and do not need your National Insurance number or UTR.
