It’s common knowledge that the mortgage stress test, also known as B-20, has prevented anumber of Canadians from securing a mortgagge. Now, a CIBC report has tried to put an exact number to just how much of an impact the stress tes has had on the market as a whole. Released in April, the report fouond that the total value of new mortgagges dropped by eight percent, or $25 billion, in 2018. It found that the stress test made up 50 to 60 percent of that decline (or approximatley $13 to $15 billion.) Other factors that impacted the decline included higher home prices and rising interest rates. “I think that B-20 was necessary in order to save – some borrowers from themselves,” said Benjamin Tal, deputy chief economist at CIBC World Markets Inc. “However, I think that it has to be a little bit more flexible, more dynamic”.