Fixed-rate vs. adjustable-rate mortgages: What's the difference?
USA Today
Last updated: September 7, 2026
This article compares fixed-rate mortgages (FRMs) and adjustable-rate mortgages (ARMs) to help homebuyers understand their differences. It outlines how each loan type functions, their distinct payment structures, associated risks, and guides readers in selecting the most suitable option for their homeownership aspirations.
- Fixed-Rate Mortgages (FRMs): With an FRM, the interest rate remains constant for the entire loan term, typically 15 or 30 years. This predictability ensures that the principal and interest portion of the monthly payment never changes, offering stability and ease of budgeting. FRMs are often preferred by buyers who plan to stay in their homes for an extended period and value payment certainty.
- Adjustable-Rate Mortgages (ARMs): ARMs feature an interest rate that is fixed for an initial period, usually five, seven, or ten years, after which it adjusts periodically based on market conditions. Initially, ARM rates are often lower than FRM rates, potentially leading to lower initial monthly payments. However, after the fixed period, payments can increase or decrease, introducing payment uncertainty and risk.
- Payment Differences: The primary difference lies in payment stability. FRMs offer consistent monthly payments, while ARMs can experience fluctuations after the initial fixed-rate period, impacting affordability.
- Risks: The main risk with ARMs is the potential for rising interest rates, which would increase monthly payments and overall cost. FRMs, while offering payment stability, may mean a higher initial interest rate compared to an ARM.
- Choosing the Right Loan: Buyers who prioritize budget predictability and long-term homeownership may find FRMs more suitable. Those comfortable with potential payment changes and who anticipate moving or refinancing before the rate adjusts might consider an ARM for its lower initial rates.
