This is a quite common myth that is factually wrong. It's the main way for a private wealth advisors to talk somebody into a unecessary mortage. The interest r

This is a quite common myth that is factually wrong. It's the main way for a private wealth advisors to talk somebody into a unecessary mortage. The interest rate on mortages is always higher compared to the interest rate on leverage for stock (by using the stock itself as collateral). You can get close to the yield on swiss confederation bonds if you buy well priced, leveraged ETFs. Obviously that interest rate is as stable if not more stable than the interest rates on mortages. Please DO NOT buy stocks with money from a mortage. you're just giving up at least 1% yield.