Mortgage Calculators Find out your potential borrowing, costs, affordability and more with our helpful mortgage Calculators How much can I borrow? Find out how much you could borrow on a mortgage. What property can I afford? Find out what house price you could afford. How much stamp duty will I pay? Find out how much stamp duty you'll pay on your home purchase. How much can I borrow on a Buy to Let? Find out how much rental income you'll need for your Buy to Let mortgage. How much can I borrow on a Remortgage? Find out how much you could borrow with a remortgage.