Monthly data Jan 2006 – Jan 2026 · FEDFUNDS & CPIAUCSL (FRED / Federal Reserve)
| Era | Avg Rate | Avg CPI YoY | Real Rate |
|---|---|---|---|
| Pre-GFC (2006–08) | 3.90% | 3.60% | +0.30% |
| GFC / Zero (2008–15) | 0.16% | 1.44% | −1.28% |
| Normalization (2016–20) | 1.32% | 1.90% | −0.58% |
| COVID Stimulus (2020–22) | 0.11% | 3.61% | −3.50% |
| Inflation Surge (2022–23) | 3.16% | 6.65% | −3.50% |
| Easing Cycle (2024–26) | 4.79% | 2.93% | +1.86% |
The overall correlation (r = 0.30) reflects that the Fed reacts to inflation. Rates rise because inflation is already high, not to predict it.
Inflation hit 8.98% while rates were still near 0%. Real rates reached −8.4% — the loosest monetary conditions in modern history.
The 2022–2024 hike of +5.05% drove inflation from ~9% down to ~2.5%. Real rates turned positive in May 2023, signalling genuinely restrictive policy.
A positive real rate restrains borrowing and spending. The Fed held real rates negative for most of 2008–2023, keeping policy accommodative for 15 years.
At 3.64% rate and 2.39% inflation, the real rate (+1.25%) remains positive — the Fed is easing gradually without re-igniting inflation pressure.
The Federal Reserve uses the Federal Funds Rate as its primary tool to control inflation. The mechanism works through several channels:
The transmission lag is typically 12–18 months for full economic impact, which is why the Fed must act pre-emptively rather than reactively.
The post-COVID inflation surge was driven by a combination of supply and demand shocks that made it harder to manage:
The resulting −8.4% real rate in early 2022 represented one of the most accommodative monetary stances ever recorded during a high-inflation environment.