The problem is, who knows when/if rates will rise?  Perhaps 0.25 - 0.50 in the first six months of 2018?  Really?  Nice crystal ball BoC.  I don't think the economy is as rosy as they think it is.  Wage growth and standard of living for many is stagnant at best.  One of the big concerns though is HELOCs.  While most car loans and mortgages are likely "locked-in" to a low interest rate, many HELOCs are $100,000+ and are based on Prime + ?.  If that starts rising then some over-extended borrowers might start to feel the pinch.