Free investor tool

Stamp Duty Calculator

Estimate Stamp Duty Land Tax for a purchase in England or Northern Ireland, with residential, commercial and mixed-use options.

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Purchase tax assumptions

Automatic SDLT estimates cover England and Northern Ireland using rates effective from 1 April 2025, checked on 12 October 2026. Residential surcharges, first-time buyer relief and the special corporate rate depend on the selections you make. This tool does not decide whether you qualify for a relief.

New-lease rent tax, linked transactions, trusts, shared ownership and unusual reliefs are not modelled. For Scotland (LBTT), Wales (LTT), or a transaction outside this scope, obtain the appropriate tax calculation from your adviser. All costs should include any applicable VAT.

Official sources: Residential SDLT · Commercial and mixed-use SDLT · Company purchases · Non-resident purchases.

Illustrative estimates only. Valuations, lender terms and your actual tax position require independent checks. Projected returns are estimates, not guarantees.

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