Stamp Duty Calculator
SDLT (England & Northern Ireland), LBTT (Scotland), LTT (Wales). Residential, mixed-use, and commercial property.
First-Time Buyer relief and the additional-property surcharge do not apply to commercial / non-residential property.
Also available on iPhone
Stamp Duty Atlas runs on iPhone too — same calculator, same privacy-first design, same rates verified against HMRC, Revenue Scotland, and the Welsh Revenue Authority. No tracking, no data collected, runs entirely on your device.
Coming to the App Store
About
Stamp Duty Atlas estimates UK property transaction taxes — Stamp Duty Land Tax (SDLT) for England and Northern Ireland, Land and Buildings Transaction Tax (LBTT) for Scotland, and Land Transaction Tax (LTT) for Wales. It covers residential, mixed-use, and commercial property, with rate tables verified against HMRC, Revenue Scotland, and the Welsh Revenue Authority.
The same calculator is also available as a free iOS app on the App Store, designed to run entirely on your device with no backend, no account, no advertising, and no third-party tracking.
Reference Use Only
Stamp Duty Atlas provides numerical estimates for reference only.
It is not tax, legal, or financial advice. No duty of care is assumed by the developer in respect of any user.
Do not rely on its output without independent verification by a qualified solicitor, conveyancer, accountant, or directly with HMRC, Revenue Scotland, or the Welsh Revenue Authority before completing any property transaction.
To the maximum extent permitted by law, the developer accepts no liability for any loss arising from use of the calculator. Nothing in this notice limits liability for fraud or for death or personal injury caused by negligence.
Privacy
The Stamp Duty Atlas web calculator runs entirely in your browser. No property prices, calculations, or personal data are sent to any server — every calculation happens on your device.
This site does not use cookies, third-party analytics, advertising, or tracking identifiers. Your browser may make standard requests to load the page, but no data about your use of the calculator is recorded or transmitted.
The iOS app version of Stamp Duty Atlas similarly collects no personal data. Apple may collect standard App Analytics and crash diagnostics in connection with apps installed from the App Store; this is governed by Apple's own privacy practices, not by us — see Apple's Privacy Policy.
You have rights under the UK General Data Protection Regulation (UK GDPR) and the Data Protection Act 2018 in respect of any personal data we process. As we do not process any personal data directly, those rights are exercised primarily against Apple in respect of App Store analytics. Should you wish to contact us about anything in this notice, write to privacy@stampdutyatlas.com. You may also complain to the Information Commissioner's Office at ico.org.uk.
Terms of Use
Use of the Stamp Duty Atlas calculator (web or iOS app) is subject to the following terms. By using the calculator, you confirm that you have read, understood, and accepted them.
- The calculator provides numerical estimates only.
- It is not tax, legal, or financial advice, and no duty of care is assumed by the developer.
- You must not rely on the calculator's output without independent verification.
- To the maximum extent permitted by law, the developer accepts no liability for loss arising from your use of the calculator or reliance on its output.
- Nothing limits liability for fraud or for death or personal injury caused by negligence.
- Governing law: England & Wales.
A formal Terms of Use document drafted by an SRA-regulated UK solicitor is in preparation. This page will be updated when it is published.
Support
For questions, bug reports, or feedback about Stamp Duty Atlas:
Email: support@stampdutyatlas.com
We aim to acknowledge support enquiries within 5 working days and to provide a substantive response within 20 working days.
If your enquiry concerns a specific property transaction, please remember that we cannot give tax, legal, or financial advice — we can only address questions about the calculator itself. Specific transaction advice should be sought from a qualified solicitor, conveyancer, accountant, or directly from HMRC, Revenue Scotland, or the Welsh Revenue Authority.
Sources & Attribution
Rate tables in Stamp Duty Atlas are drawn from data published by:
- HM Revenue & Customs — gov.uk/stamp-duty-land-tax
- Revenue Scotland — revenue.scot
- Welsh Revenue Authority — gov.wales
This source data is published under the Open Government Licence v3.0 and is reused with attribution.
Rates are current as of April 2026. UK tax rates change at every Spring Statement, Autumn Budget, and at each Scottish and Welsh budget.