The primary amount of money borrowed in home mortgage is called the principal. The principal will vary according to the price of the property, and the amount the borrower has to make a down payment. Furthermore, the amount owed on home mortgages isn’t limited simply to the principal. It also includes the annually accrued interest. Therefore, in addition to paying off the principal home mortgage, the borrower also has to pay off the accruing interest. This is what makes having a mortgage a huge expense. Paying home mortgages begins firstly with paying off the interest first and then secondly, the principal.