Homebuyers braving the hot U.S. housing market have run headlong into a striking transition. The average interest rate for a 30-year fixed mortgage jumped from around 3.2% at the beginning of 2022 to 5.3% in mid-May, the highest level since 2009. This rise was sparked by the Federal Reserve's commitment to raise the federal funds rate — a key benchmark for short-term interest rates — to help control the highest inflation in decades.