Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

Pros/cons of borrowing money using a mortgage loan and investing it in a low-fee index fund?
Well for a start funds don't pay interest.  If you pick an income-paying fund (as opposed to one that automatically reinvests any income for you) you will receive periodic income based on the dividends paid by the underlying stocks, but it won't be the steady predictable interest payment you might get from a savings account or fixed-rate security. This income is not guaranteed and will vary based on the performance of the companies making up the fund. It's also quite likely that the income by itself won't cover the interest on your mortgage.  The gains from stock market investment come from a mixture of dividends and capital growth (i.e. the increase in the price of the shares).  So you may have to sell units now and again or cover part of the interest payments from other income. You're basically betting that the after-tax returns from the fund will be greater than the mortgage interest rate you're paying.   3 facts: If you're comfortable with these 3 facts, go for it. If they're going to keep you awake at night, you might not want to take the risk.