Calculate Your Stamp Duty Tax with Our Free SDLT Calculator
Our Stamp Duty Land Tax (SDLT) calculator helps you estimate the tax you'll pay when purchasing a property in England or Northern Ireland. Simply enter your property price and buyer status to see your instant tax liability based on current HMRC rates for the 2026/27 tax year.
How to use: UK Stamp Duty Calculator 2026/27 – SDLT Tax Estimator
Stamp Duty Land Tax (SDLT) is a tax payable on property purchases in England and Northern Ireland, administered by HMRC. Understanding your potential tax bill is crucial when budgeting for a property purchase, as stamp duty can add thousands of pounds to your overall costs. The rates you'll pay depend on the property price, your buyer status, and whether you already own residential property.
The standard SDLT rates for 2026/27 are: 0% on the first £125,000, 2% from £125,001 to £250,000, 5% from £250,001 to £925,000, 10% from £925,001 to £1.5 million, and 12% on amounts exceeding £1.5 million. First-time buyers benefit from a 0% rate on the first £300,000 for properties up to £500,000. If you're purchasing an additional property, a 5% surcharge applies on top of the standard rates. Use our calculator to see your exact liability across these tax bands.
Common mistakes include forgetting that additional property surcharges apply if you own any other residential properties, underestimating costs by not including your full purchase price, and missing first-time buyer relief eligibility. Remember that SDLT must be paid to HMRC before completion, and your solicitor or conveyancer will typically handle this. Always verify current rates with HMRC before exchange, as thresholds can change annually.