Whether you possibly can afford the repayments – This is the largest factor to assume about when you’re hoping to take out a mortgage to make some improvements at home. Work out whether or not you’ll be ready to match the repayments into your finances with the help of our loan calculator. The APR is the total price of borrowing, as a share of the quantity you owe, over a year. The APR is calculated from the annual price of curiosity plus any upfront charges.