The Fed cut from 5.5% to 3.75% — what that one rate actually moves across the economy

The number that anchored global markets for most of 2025 barely moved, and that was the story. After raising its policy rate to a two-decade high of 5.25%–5.50% by the summer of 2023, the Federal Reserve began cutting in September 2024 with an outsized half-point move, trimmed twice more before year-end to 4.25%–4.50%, and then waited. Through five straight meetings in the first half of 2025 it held, watching to see how tariffs and a cooling labor market would feed into inflation. Only late in the year did it resume, cutting at three meetings in a row to land at 3.50%–3.75%, where it still sat in early 2026.

One rate, set by a committee, drives how the entire market prices itself. Understanding why is most of CFA Level I monetary policy.

The Fed sets one rate — the rest is downstream

The Federal Reserve does not set mortgage rates, corporate-bond yields, or the rate on a car loan. It targets a single thing: the federal funds rate, the rate banks charge each other to borrow reserves overnight. Its main day-to-day tool is open market operations. Buying government securities injects reserves and pushes the rate down (expansionary); selling them drains reserves and pushes it up (contractionary). Everything else the policy rate affects, it affects indirectly.

How one rate moves an economy

The curriculum calls this the transmission mechanism, and it runs through several channels at once:

• Short rates move first and directly, because the policy rate is the overnight cost of money.
• Long rates follow, because a 10-year yield is built from expected future short rates plus a term premium; when the Fed signals a path, long rates re-price.
• Bank lending gets cheaper to fund, so more credit flows to households and businesses.
• Asset prices rise as a lower discount rate lifts bond and equity valuations, a wealth effect that feeds consumption.
• The exchange rate tends to weaken, since lower domestic rates make the currency less attractive, which helps exporters and nudges up import prices.
• Expectations shift on the central bank's forward guidance alone, before a single new loan is made.

A cut, in other words, pulls several levers at once, pushing toward more spending, more investment, and higher risk-asset prices.

Why the Fed spent 2025 waiting

This is what explains the pause. Monetary policy works with a lag. The curriculum breaks it into recognition, decision, implementation, and impact, and the impact lag alone typically runs 6 to 24 months. A rate the Fed sets today mostly affects the economy a year or more from now.

That forces the central bank to set policy for the economy it expects rather than the one in the latest data. While the effect of a new tariff regime on prices was still uncertain, holding was a rational response, not indecision: the Fed was acting ahead of conditions that had not fully arrived. Cut too soon and you can re-ignite inflation a year out; cut too late and you deepen a slowdown you can no longer reverse in time.

What it means for the exam

Economics is worth 8–12% of the Level I exam, and monetary policy is its spine. Know the tools and their direction — buying securities and lowering the policy rate are expansionary; selling and raising are contractionary. Know the channels, because exam questions love to ask how a single cut reaches aggregate demand. And know the lag, because it is the reason real central banks can look indecisive when they are in fact being careful.

By early 2026 the Fed's own projections pointed to a policy rate settling near 3% over the long run — its estimate of the neutral policy rate in nominal terms, the longer-run level where rates settle once the economy is in balance. The job of monetary policy is to move rates from where they are today toward that target without overshooting it.