Mortgages Key Terms

5/1 Adjustable Rate Mortgage A 5/1 adjustable rate mortgage (ARM) or 5-year ARM is a mortgage loan where “5” is the number of years your initial interest rate will stay fixed. The “1” represents how often your interest rate will adjust after the initial five-year period ends. The most common fixed periods are 3, 5, 7, and 10 years and “1,” is the most common adjustment period. It’s important to carefully read the contract and ask questions if you’re considering an ARM. Learn more about how adjustable rates change (cfpb.gov/askcfpb/1949).