The projected 1-year interest rate in the United States rose to 4.1% in the third quarter of 2026, up from 3.6% in the previous quarter. The move, captured in data updated on 16 September 2026, underscores a continued shift toward higher expected short-term borrowing costs compared with the second quarter of 2026.
The increase from 3.6% in Q2 2026 to 4.1% in Q3 2026 suggests that market participants or forecasters now anticipate a firmer interest rate environment over the coming year. This change in the 1-year projection highlights evolving expectations around monetary conditions and could influence funding costs, investment decisions, and portfolio allocations across U.S. financial markets.