Mortgage and refinance interest rates today, March 21, 2026: Jumping to a six-month high

Mortgage and refinance interest rates have risen to a six-month high as of March 21, 2026, potentially increasing borrowing costs for consumers and businesses, which could dampen housing market activity and overall consumer spending. This development may signal broader inflationary pressures or tightening monetary policy, but its impact depends on whether these rate hikes were already anticipated by the market. Higher rates could lead to reduced demand in real estate and related sectors, though macro headwinds like economic slowdowns might further complicate the outlook.