Mortgage Rates Just Took Their Biggest Jump in Over a Year

Investopedia Markets News (all except PF) · Sep 17, 2026

For sale signs are posted in front of condominiums for sale in July in Los Angeles, California. Mortgage rates rose this week to their highest since early 2025.Credit: Justin Sullivan / Getty ImagesWhat You Need to KnowMortgage rates jumped this week to their highest in more than a year and a half, following 10-year Treasury yields spiking in recent weeks.Rates near 7% could further slow a housing market already freezing up because of high prices and borrowing costs.Where rates go next likely depends on whether the Iran war eases, lowering fuel prices, or worsens, stoking inflation…