Fed raises benchmark rate to 3.75%-4% as borrowing costs climb for consumers and businesses

The Federal Reserve announced on September 16 that its benchmark interest rate will now range between 3.75% and 4%, a 0.25-percentage-point increase aimed at curbing inflation that remains above the central bank’s 2% goal. The move is expected to raise borrowing costs across the economy, affecting mortgages, auto loans and credit-card debt, while sectors such as artificial-intelligence (AI) investment may feel only a modest impact.

In its statement, the Fed said inflation is still “elevated” but noted that productivity, investment and domestic spending remain strong. The committee argued that higher short-term rates will make borrowing more expensive and saving more attractive, thereby slowing demand and easing price pressures.

Economists highlighted that the rate hike comes as the housing market faces reduced affordability due to higher mortgage rates, and many small and traditional businesses confront higher financing costs linked to rising yields on long-term Treasury debt. On September 14, the yield on the 10-year Treasury surpassed 5% for the first time since 2023.

Despite the broader tightening, AI-related capital spending continues to expand rapidly, with more than half of recent equipment-investment growth attributed to AI infrastructure. Analysts suggest that the high expected returns from AI projects may insulate the sector from modest increases in borrowing costs.

The Fed’s decision also signals that further rate hikes could follow if inflation proves persistent, a prospect that would keep long-term rates elevated and influence both consumer behavior and government borrowing costs as the national debt exceeds $40 trillion.

"Restoring price stability is central to the Fed’s credibility," Fed Chairman Kevin Warsh said in August, reaffirming the commitment to bring annual inflation back to the 2% target.