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 2018/19 tax year. Salary for period (£): The amount received before deductions. Country of residence England Northern Ireland Scotland Wales Frequency? Yearly Monthly Weekly The payment frequency Student Loan? Calculate Note: These calculations are only for illustrative purposes and are not a substitute for professional advice.