SDLT calculator for investors.
Stamp duty on an investment purchase — including the non-residential rates that apply to commercial, mixed-use and 6+ dwellings in one transaction.
England rates. Residential assumes an additional property (the 5% surcharge applies). Mixed-use and 6+ dwellings use non-residential rates. For research — confirm with your solicitor.
SDLT questions, answered
What is the 6+ dwellings SDLT rule?
Buying six or more dwellings in a single transaction lets you use non-residential SDLT rates (0% to £150k, 2% to £250k, 5% above) instead of residential additional-property rates — often a substantial saving on blocks of flats and portfolios.
What SDLT rates apply to an additional property?
In England, an investor buying an additional residential property pays the standard bands plus a 5% surcharge: 5% to £125k, 7% to £250k, 10% to £925k, 15% to £1.5m and 17% above.
How is mixed-use property taxed?
A genuinely mixed-use purchase — for example a shop with flats above bought together — is taxed at non-residential rates on the whole price, including the residential part.
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