Stamp duty land tax calculator Calculate the stamp duty charged for the purchase of property in England, Wales and Northern Ireland. The tax calculated does not include the higher rates of SDLT which applies to purchases of additional residential properties from 1 April 2016. These calculations are for the 2017/18 tax year. Gross Pay (£): The amount received before deductions. Tax Payable In: England Scotland Is this pay weekly, or monthly? Weekly Monthly The payment frequency Tax code: The numeric element of the tax code. Please select an additional Tax Code (if applicable): None BR K D0 D1 NT Calculate Note: These calculations are only for illustrative purposes and are not a substitute for professional advice.