Compare 2026 ARM vs fixed-rate mortgage rates: 5/1 ARM at 6.33% vs 30-year fixed at 6.58% per FRED—see which loan saves money today.
As of July 28, 2026, the spread between fixed-rate and adjustable-rate mortgages is narrower than in recent years, yet still meaningful. FRED data released July 23 show the 30-year fixed-rate mortgage at 6.58 percent, the 15-year fixed at 5.96 percent, and the 10-year Treasury yield at 4.69 percent, producing a mortgage-to-Treasury spread of 1.89 percentage points. Those benchmarks set the stage for the ARM versus fixed-rate decision facing borrowers today.
Market snapshots from Bankrate and U.S. Bank confirm that introductory ARM rates remain below fixed-rate pricing. The following table aggregates the most recent national averages:
| Product | Interest Rate | APR |
|---|---|---|
| 3/1 ARM | 5.76 % | 6.57 % |
| 5/1 ARM | 6.33 % | 6.22 % |
| 7/1 ARM | 5.96 % | 6.50 % |
| 10/1 ARM | 6.21 % | 6.43 % |
| 30-Year Fixed | 6.62 % | 6.70 % |
The 5/1 ARM, the most popular hybrid product, carries an introductory rate 0.29 percentage points below the 30-year fixed. On a $400,000 loan, that difference equals roughly $1,160 in annual interest savings during the first five years.
Every ARM is governed by three caps: the initial adjustment cap, the periodic cap, and the lifetime cap. Standard 5/1 structures limit the first reset to 2 percentage points above the start rate, subsequent annual moves to 2 points, and lifetime increases to 5 points. Using the 6.33 percent 5/1 rate above, the maximum rate a borrower could face after year five is 11.33 percent—well above today’s 30-year fixed, but contractually bounded.
The reset index for most ARMs is the one-year SOFR; the margin added to that index averages 2.75–3.00 percentage points. Because SOFR has remained below 4.70 percent in 2026, current margins keep the fully indexed rate competitive with fixed-rate pricing. Borrowers who plan to move or refinance before the first reset avoid the risk entirely.
Data from multiple lenders indicate that ARMs now appeal to two borrower profiles. First, households expecting to relocate within five to seven years can capture the lower teaser rate without exposure to later resets. Second, buyers in high-cost metros such as Seattle and Boston—where median home values exceed $750,000—use the payment reduction to qualify for larger loan amounts under current debt-to-income guidelines.
Conversely, buyers who intend to occupy the property beyond year seven, or who place a premium on payment certainty, continue to favor the 30-year fixed. The 0.29-point spread is modest by historical standards, so the insurance value of a locked rate remains attractive if rates rise faster than forward curves predict.
For homeowners already holding a 30-year fixed above 7 percent, refinancing into a 5/1 ARM at 6.33 percent produces immediate cash-flow relief. Using a break-even calculator at HomeRates.ai, a borrower saving $110 per month would recover typical refinance costs of $4,800 in roughly 44 months—well inside the fixed-rate period of the ARM.
On July 28, 2026, a 5/1 ARM priced at 6.33 percent offers measurable savings versus the 6.58 percent 30-year fixed for buyers who can exit or refinance before year five. For longer horizons or maximum payment certainty, the fixed-rate mortgage remains the lower-risk choice. Run live scenarios at HomeRates.ai to quantify the trade-offs against your specific timeline and risk tolerance.
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