Interest only jumbo mortgages are limited to adjustable rate mortgage (arm) programs and can be fixed for a full 5, 7, or 10 years. This interest only period is generally 10 years after which time your payment reverts to a principal and interest payment amortized over the remaining term of the loan.
Interest Only Jumbo Mortgages Interest-only jumbo mortgages are useful loan options if you prefer to keep your monthly payments low and want the flexibility to invest the savings or to make larger, irregular payments to principal on your own schedule. If you choose to make interest-only payments, your interest rate is fixed for a period of 5, 7, or 10 years.