US economic growth decelerated sharply in the second quarter, expanding at just 1.5% annually compared to 2.1% in Q1. The slowdown caught economists off guard, signaling potential headwinds for consumer spending and business investment heading into the second half of the year.

The weaker-than-expected performance raises fresh questions about the resilience of the labor market and inflation trajectory. A sustained period of slower growth could influence Federal Reserve decisions on interest rates, particularly if inflation pressures ease but economic momentum continues to fade. Markets will watch closely for revisions to Q2 data and forward guidance from Fed officials.

Consumer spending, which typically drives roughly 70% of US GDP, likely softened during the quarter. Rising borrowing costs from the Fed's rate-hiking campaign appear to be dampening both household purchasing power and business capital expenditures. Wage growth, while still solid in absolute terms, has lagged inflation for many workers, pressuring discretionary spending.

The deceleration also reflects ongoing uncertainties around credit market stress, banking sector stability, and global economic conditions. Trade tensions and supply chain vulnerabilities continue to weigh on manufacturing output. Meanwhile, the housing market remains constrained by elevated mortgage rates that have priced out marginal buyers.

Recession risks, though not imminent, have returned to investor conversations. A string of quarterly results below trend growth could eventually trigger broader economic contraction if consumption continues to cool faster than anticipated. Job losses and weakening wage dynamics would compound the slowdown.

The data lands as inflation shows some signs of moderating from 2022 peaks, giving the Fed potential room to pause or slow its rate increases. But policymakers face a delicate balancing act. Too much tightening risks pushing the economy into recession; too little could allow price pressures to re-accelerate. Q2's surprise slowdown suggests that balance may already be shifting unfavorably.