Mortgage rates make biggest jump in 24 years. Here’s what’s behind it

& World Treasury bond yields spike. MDTSee More Deseret News Stories In SearchA home is constructed in Salt Lake City on Thursday, Oct. 1, 2026. 25%. The yield rate on 10-year Treasury notes is significant because it impacts interest rates on some of the biggest expenses for household budget managers, like mortgages, auto loans and credit cards.