In Canada there is the "Smith Maneuver" which involves a Home Equity Line of Credit (HELOC) where you borrow against your equity and invest it, and write off th

In Canada there is the "Smith Maneuver" which involves a Home Equity Line of Credit (HELOC) where you borrow against your equity and invest it, and write off the interest payment on the HELOC. So technically you're using low-cost mortgage lending (2.15% rates are possible) to invest and get 5-7% returns on average, plus writing off the interest payments.