Evidence Pack: The Accuracy of the Yield Curve Inversion as a Recession Forecaster in the Era of Quantitative Easing

Financial commentators and traditional forecasting models routinely assert that an inverted yield curve guarantees an impending recession, pointing to its flawless track record preceding every U.S. economic contraction since 1955. The evidence from the 2022 to 2024 economic cycle directly contradicts that deterministic claim. The spread between the 10-year Treasury bond and the 3-month Treasury bill inverted to nearly -200 basis points and remained there for two years, yet the U.S. economy continued to expand, adding jobs while gross domestic product grew.[1][2]

The mechanics of the indicator rely on the term premium. Normally, investors demand higher yields to lock up their money for ten years compared to three months. When the Federal Reserve raises short-term rates to cool inflation, the 3-month yield spikes. If the market expects those rate hikes to crush long-term growth, the 10-year yield falls, inverting the curve.[4]

The Federal Reserve Bank of New York formalized this statistical relationship in 1996. Economists Arturo Estrella and Frederic Mishkin developed a probit regression model that translates the 10-year minus 3-month spread into a specific probability of a recession within 12 months.[4]

In October 2022, the 10-year minus 3-month spread turned negative. By July 2023, the inversion reached extreme levels. According to data compiled by Visual Capitalist and cited by SBKO Bank, the yield curve model implied a 61% probability of a recession for 2024.[3]

No recession arrived. Unemployment remained near 4.3% in early 2026, and the economy achieved what forecasters call a soft landing. The indicator generated a massive false positive, forcing statisticians to examine the structural changes in the bond market.[1][4]

The primary suspect for the signal failure is Quantitative Easing. Between 2008 and 2022, the Federal Reserve expanded its balance sheet from $900 billion to nearly $9 trillion, absorbing massive quantities of long-term Treasury securities.[4]

This unprecedented buying pressure artificially suppressed the term premium. Research by Gagnon, Raskin, Remache, and Sack estimated that the initial large-scale asset purchases depressed long-term Treasury yields by 50 to 100 basis points.[4]

"The yield curve should be interpreted as a probabilistic indicator rather than a deterministic signal," notes a 2026 macroeconomic analysis published on Medium. When central banks hold trillions in long-term debt, the 10-year yield reflects policy intervention as much as it reflects fundamental growth expectations.[4]

The Boston Fed highlighted this distortion even before the pandemic. In a 2020 paper, researchers noted that "a yield curve inversion likely overstates the probability of a recession when the stance of monetary policy... is accommodative," pointing out that inversions driven by falling long-term yields behave differently than those driven by spiking short-term rates.[5]

Consumer resilience also severed the causal chain between the bond market and the real economy. The yield curve traditionally forecasts recessions because inverted rates compress bank lending margins, which chokes off credit.[1]

In 2022 and 2023, that transmission mechanism hit a firewall of excess household liquidity. American consumers had accumulated roughly $2 trillion in pandemic-era savings, allowing them to keep spending even as borrowing costs soared.[1]

The divergence between the mathematical model and the actual economy highlights the danger of relying on single-variable forecasts. "There is some debate as to why the curve has been such a dependable indicator of economic downturn," writes Roger Lee, Vice President at SBKO Bank, noting that the economy comprises "incredibly complex inputs" that cannot be reduced to a single bond spread.[3]

The failure of the 2022-2024 inversion does not mean the yield curve is useless, but it requires forecasters to adjust their baselines. If the term premium remains permanently compressed by global demand for safe assets and central bank balance sheets, future yield curves will naturally sit flatter.[4][6]

Consequently, a shallow inversion may become the new normal during mild tightening cycles, requiring a much deeper negative spread to signal a genuine economic contraction. The 8-for-8 track record is broken, leaving macroeconomic forecasting reliant on a broader dashboard of real-time indicators.[1][6]