Mortgage Refinance Rates September 2024 Usa. 5/1 arm refinance rates soar (+0.34%) the 5/1 arm refinance rate is 5.53%, up 34 basis points from last week's 5.19%. Take a home buyer who can afford to pay $2,200 a month in principal and interest.

Best for variety of refi types. That’s down from last month’s 6.19% and down from last year’s 6.95%.