To make money on interest rate speculation you need to second guess the fixed rates set by the institutions. For example, to make/save money on a fixed rate mortgage I need to second guess the lender's fixed rate and assume that I can figure out that they are wrong and that my prediction of the future is more accurate. This is effectively gambling. Since this thread was originally posted in the Mortgages & Home Buying forum I assume that the context is primarily in relation to mortgages. I see no logical reason why anybody can or should base mortgage selection decisions on speculation about future interest rate fluctuations. But I'm just a clown so what would I know...