The Federal Reserve is widely expected to raise interest rates for the first time in nearly three years, signaling a potential shift in its approach to tackling persistent inflation. However, economists and former officials agree that a single quarter-point increase is unlikely to be sufficient to curb price pressures, suggesting a series of hikes may be forthcoming.

Investors have priced in a rate increase at the Fed’s upcoming meeting, reflecting a consensus that borrowing costs have remained too low for too long. Richard Clarida, former vice-chair of the Fed and now a strategist at Pimco, indicated that additional hikes would likely follow the initial move, consistent with the central bank’s typical pattern of incremental tightening rather than isolated adjustments.

This stance complicates the political landscape as the Fed prepares to act less than two months before the U.S. midterm elections. Amid competing pressures, some administration figures, including Vice President JD Vance and Treasury Secretary Scott Bessent, have urged caution. They argue that recent inflation trends largely stem from supply shocks—such as global energy disruptions—that monetary policy may not effectively address, raising concerns about overtightening.

Since adopting the federal funds rate as its primary tool in the 1990s, the Fed has rarely implemented standalone rate increases, with the last one-off hike occurring in 1997. Fed officials, including current governor Christopher Waller, have emphasized that small, singular rate changes produce limited impact on inflation, reinforcing the likelihood of further tightening if the Fed decides to move.

Recent inflation data have complicated the Fed’s calculus. Although earlier months showed signs of easing as tariffs’ effects diminished, a report released just before the meeting revealed stronger-than-expected core consumer prices in August. Coupled with positive employment figures and rising oil prices linked to tensions in the Persian Gulf, the data have pushed markets toward anticipating multiple rate increases extending into next year.

Kevin Warsh, the newly appointed Fed chairman, has voiced skepticism about the Fed’s ability to finely tune the economy through incremental adjustments, arguing against relying on small changes to influence inflation significantly. Market pundits interpret this as a signal the Fed may pursue a more assertive tightening path rather than easing off after a modest initial hike.

The Fed faces the challenge of managing market expectations, which often extrapolate a first rate increase into a prolonged tightening cycle, potentially overshooting appropriate policy levels. While the Fed regularly releases quarterly economic projections, including its outlook for rates, Warsh has so far refrained from providing detailed forward guidance, preferring flexibility in decision-making. This reticence increases uncertainty among investors about the trajectory of interest rates.

Monetary policymakers remain divided on the outlook. San Francisco Fed President Mary Daly frames the choice as between two scenarios: one in which prior shocks dissipate and the current policy stance suffices, and another in which inflation broadens and requires more substantial rate hikes. The probability of the latter scenario has gained ground recently, suggesting the Fed may need to act more aggressively.

Conversely, officials like St. Louis Fed President Alberto Musalem argue for early, gradual increases to avoid harsher, more disruptive measures later. This viewpoint rests on concerns about ongoing inflationary pressures from factors such as elevated diesel prices, new tariffs, supply chain strains due to AI investment, and strong consumer demand supported by high equity valuations.

As the Fed convenes, its decision on September interest rates will not only reflect recent data but also its broader strategy to balance inflation control with economic growth, amid geopolitical uncertainties and political sensitivities ahead of the 2024 elections.