In principle, OSFI regulations require that when homeowners qualify for mortgages, they're qualifying at a rate of interest that is dramatically higher than what they're paying now. If, in fact, we're right and rates go up by about 200 basis points between now and, say, sometime next year or the end of this year, that is well within the qualifying rate that is used by banks and other financial organizations to figure out if households are going to be able to afford to continue paying or servicing their debt at a higher rate.
Evidence of meeting #14 for Finance in the 44th Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was inflation.
A video is available from Parliament.