Calculators Mortgage Amount Number of years to repay Interest Rate % Mortgage Type RepaymentInterest Only Please note: This calculation is a guide to how much your monthly repayments would be. The exact amount may vary from this amount depending on your lender's terms. Property Purchase Price Is this a buy-to-let or second home? Are you a first-time buyer? Your calculation Please note: This calculator is provided as a guide only on how much stamp duty land tax you will need to pay in England and Northern Ireland. It assumes that the property is freehold and for residential purposes.