StampDutys.com is a free, independent website built to help UK homebuyers, landlords and property investors understand the taxes and costs involved in buying, owning and financing property — explained plainly, with no sign-up required.
StampDutys.com is a free, independent collection of UK property tax and mortgage calculators. The core of the site covers Stamp Duty Land Tax (SDLT) for England and Northern Ireland, Land Transaction Tax (LTT) for Wales, and Land and Buildings Transaction Tax (LBTT) for Scotland — so wherever in the UK you're buying, you can work out the tax due on your purchase.
Alongside the stamp duty calculators, the site also offers around 15 related mortgage and property-investment tools, covering things like mortgage repayments, affordability, overpayments, remortgaging, buy-to-let returns, rental yield, rent-vs-buy comparisons, conveyancing fees, capital gains tax on property, HMO yield, bridging loans, BRRR strategy, Section 24 landlord tax, and shared ownership. The full list is always available from the menu at the top of every page.
The calculators are built for anyone dealing with UK residential property: first-time buyers trying to budget for the total cost of a purchase, home movers working out what an additional-property surcharge will add to their bill, landlords and buy-to-let investors assessing yield and tax exposure, and property investors comparing financing options across different deals. Whether you're buying your first flat or managing a small portfolio, the tools are designed to give you a quick, clear estimate before you speak to a professional.
Every calculator on this site is based on publicly published rates, thresholds and rules from the relevant official source — HM Revenue & Customs (HMRC) for SDLT, Revenue Scotland for LBTT, the Welsh Revenue Authority for LTT, and gov.uk more broadly for related guidance. We aim to keep every figure up to date as rates and thresholds change, and we review the calculators periodically against the latest published guidance. That said, tax rules can change with little notice, and we'd always encourage you to double-check the current position for anything time-sensitive.
StampDutys.com is a guidance tool, not a regulated financial, legal or tax advice service. The figures you see are estimates intended to help you understand roughly what you might owe or what a deal might look like — they are not a substitute for a formal calculation or a professional opinion based on your full circumstances. Before making any decision about buying, selling, remortgaging or investing in property, please consult a qualified professional: a solicitor or licensed conveyancer for legal matters, an accountant or tax adviser for tax questions, and an independent financial adviser or mortgage broker for financing and investment decisions.
StampDutys.com is free to use and is funded by advertising, including Google AdSense. Adverts may appear alongside the calculators and articles on this site. We want to be upfront about this: the site earns revenue when adverts are displayed or clicked, and this funding is what allows us to keep every calculator free and available to everyone, with no account or payment required.
For more detail on how we handle your data, the limits of liability when using our calculators, and the full terms that apply to using this site, please see our Terms of Service and Privacy Policy. If you have a question we haven't answered, you can also get in touch via our Contact Us page.