# Nearly 10% of borrowers switch to riskier mortgages as rates hit 7.12% ARM loans surge to highest share since 2024 as fixed rates soar, squeezing homebuyers. - **Source:** [US Top News and Analysis](https://brifing.si/source/635540e9-943e-450d-ae52-ae0bfe3b67eb) - **Published:** 2026-09-23 - **Topic:** [Finance](https://brifing.si/c/finance) - **Original article:** - **On Brifing:** https://brifing.si/s/f110b4bf-cc95-4190-ac54-7db5d3be9e2b ## Mortgage rates hit 2024 high The average 30-year fixed mortgage rate jumped to 7.12% last week, up 15 basis points from the previous week. This marks the highest level since early 2024, with points increasing to 0.73 for loans with 20% down payments. The spike comes as the Federal Reserve maintains its tight monetary policy stance to combat inflation, directly impacting housing affordability across markets. ## ARM share nearly triples Adjustable-rate mortgages accounted for 9.8% of applications, up from 8.4% the prior week and just 3% during pandemic-era lows. Borrowers are opting for 5/1 ARMs that offer rates a full percentage point lower than fixed loans. This shift reflects growing payment sensitivity as housing costs consume larger portions of household budgets amid persistent inflation. ## Purchase applications decline Mortgage applications for home purchases fell 1% weekly and 11% annually, while refinancing dropped 3% weekly and 62% year-over-year. The seasonal fall market is underperforming historical patterns as higher rates deter transactions. Real estate agents report significant buyer pullbacks, particularly among first-time purchasers facing stretched affordability. ## Historical rate comparison Current 30-year fixed rates stand 78 basis points higher than October 2023 levels. This dramatic year-over-year increase has effectively priced out marginal buyers, with the MBA's refinance index hitting its lowest point since February 2025. The rapid rate ascent follows the Fed's 525 basis points of hikes since March 2022. ## ARM mechanics explained Adjustable-rate mortgages typically fix initial rates for 5-10 years before resetting based on market indices. While offering short-term savings, they expose borrowers to future payment shocks. The current ARM surge resembles pre-2008 patterns, though today's underwriting standards remain stricter. Borrowers betting on future rate declines risk negative amortization. ## Oil prices impact rates Mortgage rates showed slight easing early this week as oil price declines lowered bond yields. This inverse relationship highlights how energy markets indirectly influence housing costs. However, the relief remains minimal compared to year-to-date increases, with the 10-year Treasury yield still elevated above 4.5%. ## Market segmentation effects The rate surge disproportionately impacts entry-level buyers, as conforming loan balances ($832,750 or less) face the steepest affordability challenges. Luxury markets show more resilience, with jumbo loan activity declining less sharply. This bifurcation could exacerbate existing inventory shortages at lower price tiers. ## Forward-looking implications The ARM share approaching 10% signals growing payment risk in the housing system. Should rates remain elevated through initial fixed periods, millions could face payment shocks simultaneously. Lenders are closely monitoring debt-to-income ratios, but sustained high rates may eventually pressure underwriting standards as volume declines persist. ## Sources covering this story - https://www.cnbc.com/2026/09/23/nearly-10percent-of-borrowers-opted-for-riskier-mortgages-last-week.html — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._