The term premium is the compensation investors require for bearing the risks associated with locking up capital in longer-dated debt — principally interest-rate risk, inflation risk, and uncertainty about future monetary policy. Conceptually, a long-term bond yield can be decomposed into two parts: (1) the average of expected future short-term interest rates over the bond's life, and (2) the term premium. If markets expected short rates to remain flat and demanded no extra compensation for duration, the yield curve would be flat; a positive term premium normally tilts it upward.
Because the term premium is not directly observable, central banks and researchers estimate it using affine term-structure models. The most widely cited estimate is the Adrian-Crump-Moench (ACM) model, published by the Federal Reserve Bank of New York and updated regularly, which decomposes U.S. Treasury yields into expectations and term-premium components. The Kim-Wright model, maintained by the Federal Reserve Board, is another standard reference.
Term premia have trended downward in advanced economies since the 1980s. ACM estimates of the 10-year U.S. Treasury term premium were frequently negative during the mid-2010s and again in 2019–2021, a phenomenon often attributed to large-scale asset purchases (quantitative easing), strong global demand for safe assets, and subdued inflation expectations. The premium rose sharply in 2023 as the Federal Reserve unwound its balance sheet and Treasury issuance increased.
For policy researchers, the term premium matters because it separates market expectations of future policy from risk compensation. A rise in long yields driven by higher term premia implies tighter financial conditions without any change in expected policy, whereas a rise driven by expectations signals anticipated central-bank action. Misreading the two can lead to mistaken inferences about credibility, inflation anchoring, or fiscal sustainability.
Term premia also feature in sovereign-debt analysis: countries with weaker fiscal positions or less credible monetary regimes typically face structurally higher term premia.
Example
In October 2023, the New York Fed's ACM model showed the 10-year U.S. Treasury term premium turning positive for the first time since 2021, contributing to a roughly 100-basis-point rise in long yields that summer.
Frequently asked questions
When investors prize long-dated bonds as hedges against deflation or recession, or when central-bank asset purchases compress duration risk, they may accept yields below expected future short rates, producing a negative term premium.
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