> That is because overwhelmingly your just giving your mortgage company an interest free loan due to the fact that they apply the over-payment to the final paym

> That is because overwhelmingly your just giving your mortgage company an interest free loan due to the fact that they apply the over-payment to the final payments and don't adjust the amortization schedule. I'm pretty sure this is NOT how it works with my mortgage company (BofA) I make principle-only payments that reduce the principle, which immediately affects the amount of my monthly check that goes toward principle/interest.