Basics | Oct 2, 2025

Fixed-Rate vs. Adjustable-Rate Mortgages

Basics

Fixed-rate mortgages (FRMs) and adjustable-rate mortgages (ARMs) represent two primary types of home loans available to borrowers, each with distinct features that appeal to different financial situations and preferences.

Fixed-Rate Mortgages (FRMs):

  • Interest Rate: Remains constant throughout the life of the loan.
  • Loan Term: Commonly 15, 20, or 30 years.
  • Monthly Payments: Consistent payments, providing predictability and ease of budgeting.
  • Best For: Borrowers planning to stay in their homes long-term and who prefer stability in their monthly payments.
  • Drawbacks: Typically start with higher interest rates compared to ARMs, potentially leading to higher initial monthly payments.

Adjustable-Rate Mortgages (ARMs):

  • Interest Rate: Variable, with an initial fixed-rate period followed by periodic adjustments. For example, a 5/1 ARM means the rate is fixed for the first 5 years and then adjusts annually.
  • Index and Margin: Adjustments are based on an index plus a margin determined by the lender.
  • Monthly Payments: Can vary and potentially increase significantly after the initial fixed-rate period.
  • Best For: Borrowers who plan to move or refinance before the adjustment period or anticipate a rise in income.
  • Drawbacks: Less stability; payments may significantly increase after the initial period, which can be risky if market rates rise.

Key Considerations:

  • For FRMs, evaluate the long-term cost against your stability and budget priorities.
  • For ARMs, assess your risk tolerance and future financial outlook to handle potential increases in payments.
  • Understand the terms of the ARM, including how frequently rates adjust, caps on adjustments, and what the new payment may become.
  • Consider both current economic conditions and personal financial goals when deciding between fixed or adjustable terms.
  • Consider consulting a financial advisor to evaluate personal circumstances and long-term goals.