A Qualified Mortgage is a type of loan with particular, more reliable qualities that make it more probable that you’ll be able to afford it. Before you take out a mortgage, a lender must make a good-faith attempt to evaluate your capacity to repay it. This is referred to as the “ability-to-repay” rule. If a lender lends you a Qualified Mortgage, it indicates the lender meets specific criteria and is presumed to have followed the ability-to-repay criterion.