HorizonUK Tax Solutions

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Stamp Duty (SDLT) Calculator

Work out the Stamp Duty Land Tax on a residential purchase in England or Northern Ireland for 2025/26, including first-time buyer relief and the additional-property and non-resident surcharges.

England & Northern Ireland, completions on or after 1 April 2025. Scotland (LBTT) and Wales (LTT) use different rates.

Stamp Duty (SDLT) due

£7,500

On £350,000 (2.14% effective rate)

Up to £125,000 (0%) on £125,000
£0
£125,001 to £250,000 (2%) on £125,000
£2,500
£250,001 to £925,000 (5%) on £100,000
£5,000
Total SDLT
£7,500

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How SDLT works in 2025/26

SDLT is a "slice" tax: each portion of the price is taxed at its own rate. From 1 April 2025 the standard residential bands are 0% to £125,000, 2% to £250,000, 5% to £925,000, 10% to £1.5m, and 12% above.

First-time buyers pay nothing up to £300,000 and 5% on the slice to £500,000, but the relief is lost entirely above £500,000. Buying an additional dwelling adds a 5% surcharge to every band, and non-UK residents add a further 2% on top.

Scotland (LBTT) and Wales (LTT) have their own separate systems.

Buying with a cross-border angle?

Non-resident status, additional properties and structuring can all change the bill. Book a free clarity call with a Chartered Tax Adviser.

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