Irene, Great question! Are you aware that with most lenders you can sign up to pay your mortgage in two installments monthly, rather than make one payment? The effect of this is that you pay the same amount, but it is like making 13 payments a year instead of 12. The net result is shaving appx. 6 years off a 30 year mortgage. This could be an option for you to more quickly amortize your loan without paying anything additional to principal. Hope that helps.