UK Stamp Duty Calculator (SDLT)

Stamp Duty Land Tax (SDLT) on the rates that apply from 1 April 2025 is 0% on the first £125,000, 2% from £125,001-£250,000, 5% from £250,001-£925,000, 10% from £925,001-£1,500,000, and 12% above £1.5M. First-time buyers pay nothing up to £300,000 and 5% from £300,001-£500,000.

Note these thresholds tightened on 1 April 2025 — the £250,000 nil-rate band and the £625,000 first-time-buyer cap you may still see quoted elsewhere expired on 31 March 2025.

First-time buyers pay no SDLT on the first £300,000, then 5% on the portion from £300,001 to £500,000. Above £500,000 the relief is withdrawn completely — not tapered — so a first-time buyer at £510,000 pays the full standard rates on the whole price, which is a cliff edge worth knowing before you offer.

The relief is worth up to £8,750 against standard rates. These figures apply from 1 April 2025; the older £425,000 / £625,000 thresholds expired on 31 March 2025.

If you already own a property and buy another (buy-to-let, second home), you pay an additional 5% surcharge on top of standard SDLT rates (increased from 3% in October 2024). This applies to the entire purchase price.

SDLT must be paid within 14 days of completion. Your solicitor/conveyancer usually handles this.

Late payment incurs penalties and interest from HMRC.

No — Scotland has LBTT (Land and Buildings Transaction Tax) and Wales has LTT (Land Transaction Tax). Both have different rates and thresholds.

This calculator covers England and Northern Ireland only.