Not necessarily... It is actually profitable because the loans are often govt funded and the losses are offset by govt support of the lenders. Once the house, which was bought for $700k defaults and sells for $500k, the bank keeps the interest generated, the $500k it sold for and the tax break on the loss $200k. In all actuality, they can make money on a default.#2 - Still dont understand adjustable rate mortgages. Banks lose when people default on the loans. Why do they raise rates to the extent that people continue to default? Surely there is some actuarial bastard figuring out how to jack the rates up just enough to bleed people dry while still allowing them to stay in their home.