About stampdutycalc.uk

stampdutycalc.uk is a free set of calculators for property transaction taxes across the UK — SDLT in England and Northern Ireland, LBTT in Scotland, and LTT in Wales. It was built by Umesh Jyani, a full-stack developer, because most online calculators show a single total without explaining how the bands add up.

When you are budgeting for a purchase, the band breakdown matters. A £295,000 home does not attract 5% on the full price — most of it sits in lower bands. We show every slice, every rate, and how first-time buyer relief or surcharges change the figure.

Why this site exists

Property tax rules are published clearly on gov.uk and the devolved authority sites, but they are scattered across guidance pages and easy to misread under time pressure. We built one place where the maths is transparent: enter a price, toggle what applies to you, and see the full calculation with links back to the official sources.

We also publish worked examples at common price points — from £200,000 through to £500,000 and beyond — so you can compare scenarios without re-entering numbers.

What we do

We run free stamp duty calculators for England, Scotland, and Wales. Each one uses progressive band logic matching the official tax authorities, with toggles for first-time buyer relief, additional property surcharges, and non-UK resident charges where they apply.

We write guides that explain how these taxes actually work — with real numbers, not vague generalities. No financial advice, no lead generation, no conveyancing referrals. Just the maths, clearly laid out.

What we don't do

We're not solicitors, tax advisers, or mortgage brokers. Our calculators are for guidance and planning purposes. Your actual tax liability depends on your specific circumstances, and you should always confirm figures with your conveyancer before exchanging contracts.

We don't sell your data or charge for anything on this site.

Keeping rates current

Tax rates change — usually in autumn budgets. We update our calculators when official rates change and note the source date on every page. If you spot a discrepancy between our figures and the official guidance, please let us know.