- – Adjustable Rate Mortgage 10/1 ARM – the rate is fixed for a period of 10 years after which in the 11th year the loan becomes an adjustable rate mortgage (ARM). The adjustable rate is tied to the 1-year treasury index and is added to a pre-determined margin (usually between 2.25-3.0%) to arrive at your new monthly rate.
10/1 Adjustable Rate Mortgage – PenFed Credit Union – 10/1 ARMs – Offer available for purchases and refinances. The initial rate can change after 10 years by no more than 5 percentage points up or down. After the initial rate change, the rate will adjust annually by no more than 2 percentage points up or down, never to exceed 5 percentage points above the initial rate.