DGS10 vs Fed Funds Rate: Monetary Transmission and the Yield Curve Mechanism

Term structure theory says DGS10 is the integral of expected Fed Funds plus a term premium. The empirical 2000-2026 relationship shows an unstable elasticity, periods of decoupling, and the rare configuration where DGS10 falls below the policy rate , followed by a recession in seven of the ten episodes observed since 1954.

Reading the DGS10/Fed Funds relationship means reading monetary transmission itself, in its successes and its failures.

The theoretical formula and what it hides

Term structure theory states that the yield on a T-year bond equals the average of short rates expected over that horizon, plus a term premium compensating the holder for rate variation risk. For the complete series, see our ACM-model term-premium dataset. Applied to the 10-year, the identity reads: DGS10 = expected average of Fed Funds over 10 years + 10-year term premium. The formulation is mathematically correct but operationally misleading if the second term is neglected.

The 10-year term premium published daily by the Federal Reserve Bank of New York, via the Adrian-Crump-Moench (ACM) decomposition, spent 47% of 2010-2021 trading days in negative territory, and most of 2015-2024, with a low of −1.66% on 9 March 2020. A negative term premium means Treasury holders accepted a yield below the expected Fed Funds average — a phenomenon tied to QE programs, post-2008 safe-asset demand, and Basel III prudential regulation that required banks to hold a High Quality Liquid Assets stock primarily composed of Treasuries.

The ACM term premium only moved back above zero from 25 September 2023, peaking at +0.46% on 20 October 2023, before turning negative again until autumn 2024; it ranged between +0.20% and +0.89% in 2025 and between +0.46% and +0.96% in 2026. This transition radically alters DGS10/Fed Funds elasticity: an identical move in expected Fed Funds now produces different effects on DGS10 depending on whether the term premium is stable, compressing, or expanding. This context dependence is readable through DGS10 as the long-end financing anchor in the real economy.

The empirical DGS10/Fed Funds elasticity, 2000-2026

Measuring DGS10 beta to the Fed Funds Rate requires choosing a measurement window and a variation mode (level vs change, instantaneous vs smoothed). Over 3-year rolling windows in monthly variation, the DGS10/DFF beta between 2000 and 2026 is so unstable (from −4.8 to +4.0) that it has no useful central value: when Fed Funds do not move, the slightest change in the 10-year blows up the ratio. The ratio of changes over a full hiking cycle says more, and it reflects distinct macroeconomic configurations.

The 2004-2006 cycle saw Greenspan speak of a “conundrum”: the Fed raised Fed Funds from 1.0% to 5.25%, but DGS10 only followed 9% of the move (from 4.73% to 5.09% in monthly averages between June 2004 and July 2006). The ex-post explanation, structural demand from Asian central banks recycling trade surpluses into Treasuries, was fully understood only after 2008. The 2015-2018 cycle showed a ratio of 0.29: the Fed moved from 0.25% to 2.50% (upper bound), DGS10 from 2.24% to 2.83% between December 2015 and December 2018, after a 1.50% trough in July 2016. The 2022-2023 cycle showed a ratio of 0.40 (effective Fed Funds from 0.20% to 5.33%, DGS10 from 2.13% to 4.17% between March 2022 and August 2023), before the 10-year rose on its own toward 4.98% in October 2023, after the last hike.

This beta instability reflects the interaction between three variables: Fed Funds expectations (captured by Fed Funds futures and SOFR futures), the term premium (captured by ACM), and the composition of Treasury demand (captured by TIC data and bid-to-cover ratios). A rigorous monetary transmission analysis integrates these three variables, not just the simple DGS10/DFF correlation.

This contextual dependence of the DGS10/DFF beta has a direct consequence for reading Fed decisions. A 25 bps Fed Funds hike in 2024 produces a different DGS10 effect than a 25 bps hike in 2007, and the difference owes not only to expectations but to term premium resilience in each regime. This property makes DGS10 a synthetic indicator of the health of monetary transmission itself: when DGS10 fails to follow Fed Funds, it means either that markets contest the announced trajectory, or that the term premium absorbs the move.

The rare configuration of DGS10 below Fed Funds

This configuration, where the 10-year yield falls below the policy rate, is more frequent than often said. In monthly averages, it has been observed in ten episodes since 1954: 1966-1967, 1968-1970, 1973-1974, 1978-1982 (Volcker tightening), 1989-1990, 1998, 2000-2001, 2006-2008, 2019-2020 and December 2022 to October 2025. It has ended: in May 2026, DGS10 (4.48%) stood above effective Fed Funds (3.63%), and the gap reached 1.24 points in September 2026 (4.99% against 3.75%). Further detail: the lag structure between policy and profits.

Seven of the ten episodes were followed by an NBER recession within 24 months of their start, including the 2020 one, triggered by the Covid shock; three were not (1966-1967, 1998 and the 2022-2025 sequence, the longest in the series at 25 consecutive months). Each episode sits in a distinct context: anti-inflation fight 1979-1980, end of cycle 1989, dot-com bubble 2000, housing imbalances 2007. The 2022-2025 sequence is a reminder that a signal with seven hits out of ten is nothing mechanical. The complete signal analysis is treated in the 10-year minus 3-month recession signal.

In October 2026, both slopes are positive: DGS10 has stood above effective Fed Funds since November 2025, and T10Y3M has been positive without interruption since 17 October 2025, after a first move back above zero in December 2024. The DGS10/Fed Funds relationship across three regimes historically shows that each episode has its own signature, and that the recession signal is nothing mechanical: the two spreads were negative together in 1989, 2000, 2006-2007, 2019 and 2022-2024, and only the last episode has not been followed by a recession to date.

The decisive role of the term premium

The term premium is the conceptual bridge that reconciles theory and empirics. When stable, the DGS10/Fed Funds elasticity approaches theoretical values (close to 1 on long windows). When it moves, the elasticity collapses or amplifies. Episodes where the term premium rebuilds rapidly (2022-2023) coincide with observable decouplings between expected Fed Funds and the published DGS10.

The September-October 2023 episode illustrates this point. The expectations component of the ACM model stayed flat around 4.6%. Yet DGS10 rose from 4.18% on 1 September to 4.98% on 19 October 2023. The ACM decomposition attributes almost all of the move to the term premium, which went from −0.40% to +0.45%. The Fed explicitly cited this autonomous “long-end tightening” as contributing to its hike pause at the 1 November 2023 FOMC. Related work: how short rates and long rates compare.

This substitution logic between Fed Funds and term premium is a monetary transmission mechanism in its own right. When the market reprices the term premium upward, the Fed can slow the pace of tightening. When the term premium compresses, the Fed may instead need to accelerate to maintain equivalent transmission. This is precisely the policy transmission channel to corporate balance sheets that links Fed Funds to corporate balance sheets via DGS10.

For fixed income portfolio holders, this dynamic has practical implications. The effective duration of the 10-year Treasury varies depending on whether the term premium is stable or volatile. During phases of rapid term premium rebuild (2022-2023, October 2023), observed 10-year convexity is higher than in a stable regime, modifying the real risk-return profile of duration strategies. Treasury demand pressure on the term premium details how fiscal supply interacts with these dynamics. Related material: gold against the sovereign-borrowing dynamic of the United States.

Why this relationship differs from classical inversion

It is essential to distinguish the DGS10/Fed Funds relationship analyzed here from the yield curve inversion reading. Classical inversion compares DGS10 to DGS3M (the 3-month CMT yield), not to the effective Fed Funds Rate (DFF). The two are linked, DGS3M closely tracks DFF, but the gap between them can be substantial during money market stress episodes. A related angle is set out in how the maturity of a bond sleeve is chosen.

The gap between DGS3M and effective Fed Funds has a median of 7 basis points since 2010, but it reached 31 points on 17 September 2019 (repo tensions) and 82 points on 13 March 2020 (rush into Bills). For monetary transmission analysis, the DGS10/DFF relationship isolates the impact of Fed decisions on the Treasury curve; the DGS10/DGS3M relationship adds money market noise.

This distinction has implications for reading the recession signal. T10Y3M, the academic reference signal (NY Fed, Cleveland Fed, Conference Board), uses DGS3M rather than DFF. Its statistical robustness across multiple cycles comes partly from the fact that DGS3M already incorporates very-short-horizon expectations — the Bill market prices expected Fed Funds over 3 months. The DGS10/DFF spread is more immediate but less forward-looking than T10Y3M.

A practical implication of this distinction concerns timing, and it is less clear-cut than often assumed: in monthly data, T10Y3M turned negative one month before the DGS10/Fed Funds spread in 2019 and 2022, but one to five months after it in 1989, 2000 and 2006.

Last updated — 7 October 2026