UK Stamp Duty Calculator 2025 — SDLT Land Tax
Find out exactly how much stamp duty land tax (SDLT) you will pay on any residential property or land purchase in England. Updated for April 2025 SDLT rates. Covers standard purchases, first-time buyer relief, second home surcharge, and buy-to-let properties. Stamp duty is calculated in bands — this calculator applies the correct rate to each portion automatically, so any UK resident can quickly work out their total SDLT liability before making an offer.
About This Calculator
UK Stamp Duty Calculator 2025 — SDLT Land Tax is designed specifically for UK businesses and individuals. All calculations use current 2025/26 rates and follow HMRC guidelines.
Completely free with no signup required. Results are instant and calculated in your browser — no data is sent to our servers. For significant financial decisions, consult a qualified UK accountant or financial adviser.
How to use this calculator
- 1Enter the residential property purchase price and select your buyer type — first-time buyer, next home (replacing your main residence), or additional property (buy-to-let or second home). This SDLT calculator applies the correct April 2025 rates automatically.
- 2Stamp duty land tax is calculated in bands — you'll pay each rate only on the portion of the price falling within that band, not on the full amount. This means a £300,000 purchase is taxed differently to a £600,000 one, even proportionally.
- 3Budget for residential property stamp duty before making an offer. On a £400,000 standard purchase, you'll pay £10,000 in SDLT. On a £400,000 buy-to-let, the 5% surcharge means you'll pay £20,000. First-time buyers pay £0 on properties up to £300,000.
Use alongside
Pair this tool with our other free calculators: Wales Land Transaction Tax Calculator 2026 — LTT, UK Mortgage Affordability Calculator — How Much Can I Borrow?, Mortgage Overpayment Calculator UK — See How Much You Save, Rent Affordability Calculator.
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Last updated: 1 April 2026 · Rates for 2025/26 tax year