I specifically asked my guide this when we were in the process of financing. We were told that as long as it is not paid off within the first year of the loan there is no fee/penalty, and therefore going for the 7 yr loan (it had the same interest rate as the 3, 5, and 10 yr) because it had a low monthly payment amount and I could pay whatever extra amount I wished per month extra toward the principal with no penalty and the option on just paying the regular payment amount if for whatever reason a month came along that bills were tight (Christmas bills, spending $ for DVC trips, etc). It has worked out well for me so far, I have been paying approx $100-200 extra per month for a year and a half now and have enjoyed the flexability in how much extra to pay a month to get it paid off faster.