About Stamp Duty Calculator

Stamp duty in the UK is not one tax but three. England and Northern Ireland use Stamp Duty Land Tax, Scotland uses Land and Buildings Transaction Tax, and Wales uses Land Transaction Tax. Each has its own bands, thresholds and surcharges, and each changes on its own timetable. Getting a calculation right means tracking all three and the reliefs that sit on top of them.

Every rate and threshold we publish is taken from the primary source. For England and Northern Ireland that means HMRC, for Scotland it means Revenue Scotland, and for Wales it means the Welsh Revenue Authority. When a Budget, a rate change or a new relief is announced, we update the affected calculators and guides and note the date the change takes effect, so you can see whether a figure applies to your completion date.

Our tools account for the situations that trip buyers up most often: first-time buyer relief and where it tapers out, the higher rates for additional properties, purchases made through a limited company, non-resident surcharges, multiple dwellings and mixed-use property. Where a situation is genuinely complex, such as linked transactions or partial reliefs, we tell you plainly that professional advice is worth taking rather than relying on an estimate.

We treat accuracy as something to be maintained, not assumed. If you ever spot a figure that looks wrong, please tell us on the contact page and we will check it against the official guidance.

The core calculators, guides and comparison tables on this site will always stay free. That has not changed. What has changed is how we keep the lights on behind the scenes.

Running the site has real costs. Servers and infrastructure, keeping rates and guidance current across England, Scotland, Wales and Northern Ireland, and paying the writers and specialists who research our content all add up. To sustain that work we have introduced two things.

First, an optional paid plan for people who want advanced tools, saved calculations and planning features beyond the free tier. Everything on the free tier stays free.

Second, we have started showing a small number of ads. We have been deliberate about placement so they do not get in the way of the calculators or the reading experience. No interstitials, no autoplay video, no covering the result. If you spot an ad that feels intrusive, please tell us on the contact page and we will review it.

The goal is simple. Keep the free tier genuinely useful, pay the people who make the content accurate, and keep the site here for the long run.