US Mortgage Market: 92% of Loans Remain Fixed-Rate

Fixed-rate mortgages represent 92% of all U.S. home loans. This dominance reflects the preference for predictable payments over the life of the debt. Adjustable-rate mortgages, or ARMs, account for the remaining 8% of the market. These products offer a lower initial rate that changes after a set period. The choice between the two depends on the borrower's planned duration of ownership.

ARMs are structured with a fixed introductory period followed by periodic adjustments. The initial rate is typically lower than the fixed-rate alternative. Rates adjust based on a benchmark index plus a lender margin. SOFR is the common benchmark used for these calculations. Lenders add a fixed margin, often between 2% and 3.5%, to determine the final rate.

ARM Structures Define Adjustment Timing

The market offers various ARM configurations. A 5/1 ARM keeps the rate fixed for five years before annual adjustments. A 10/6 ARM holds the rate for ten years with semi-annual adjustments. Other common structures include 3/1, 7/1, and 10/1 formats. The first number indicates the length of the initial fixed period. The second number shows the frequency of subsequent rate changes.

Rate caps limit how much the interest rate can rise. These caps apply to initial adjustments, subsequent changes, and the loan's lifetime. The specific caps vary by lender and loan product. Borrowers must review these limits to understand potential future payment increases. The margin added by the lender remains constant throughout the loan term.

Buyers Targeting Short-Term Ownership

ARMs suit buyers who plan to sell within a few years. These borrowers benefit from the low introductory rates. They exit the property before the first adjustment occurs. This strategy avoids the risk of rate increases. It also allows them to refinance or sell at a lower cost basis.

Investors also utilize ARMs for short-term holding strategies. They purchase properties to flip before adjustments take effect. Alternatively, they may rent out the home and raise rents to offset higher payments. This approach requires careful timing. The loan must align with the investor's exit strategy to remain profitable.

Market Data Shows Stable Adoption

Data from Mortgage Research Center shows consistent ARM usage. The 8% market share has remained stable despite fluctuations in interest rates. Fixed-rate loans continue to dominate the sector. The reliability of a single rate appeals to the majority of borrowers. ARMs remain a niche product for specific financial situations.

GN auto markets/housing reports track these trends daily. The data provides a clear view of borrower behavior. Fixed-rate preferences remain the norm in the U.S. housing market. Adjustable-rate options serve a specific subset of buyers. The 92% to 8% split highlights the strong preference for stability.