Goldman Sachs: Fed rate hikes reshape long-term rates, putting forward rates above 5% to the test

Why have long-term rates broken above their previous range again?

In early October 2026, long-term nominal and real US yields rose to levels not seen in more than 20 years before easing. Goldman Sachs says the timing of the latest breakout in forward rates aligns more closely with the Fed's shift toward a new cycle of rate hikes.
The Iran war and energy price shock at the end of February reversed the prior decline in yields; a sharp upward revision to AI capital spending expectations in June also showed that the economy remained resilient in the face of the energy shock. But long-term real forward rates did not break above their previous range until July, when the Fed began signaling rate hikes.
Goldman Sachs says the policy rate's renewed rise after falling only to a level above 3.6% may lead investors to reconsider whether the neutral rate range of 3%–3.5% previously assumed by the Fed and many others is reasonable.

The real instantaneous forward rate 10 years ahead examined in the report can be viewed as a measure of market expectations for short-term interest rates in the distant future. Goldman Sachs says investors form a view of the future range of rates based on historical policy rate ranges, Fed communications and the economic cycle.
When policy actions challenge that range, long-term pricing can adjust substantially. For example, in 2011, prolonged zero interest rates and forward guidance weakened expectations that rates would quickly return to their old levels; rapid rate hikes in 2022–2023 led markets to reconsider a higher policy rate range.

Goldman Sachs observes that long-term forward rates have typically stabilized near the upper end of the previous federal funds rate range in past policy cycles. The forward overnight indexed swap rate recently approached 5.2% before easing slightly over two weeks, placing it close to the 5.33% peak in the effective federal funds rate in 2023–2024.
Goldman Sachs's baseline forecast puts the peak federal funds rate in this cycle at 4%–4.25%. The bank says that even if the peak were another one or two rate hikes higher, a long-term forward rate above 5% would look less reasonable as an anchor for the future range of rates.
This assessment depends on the policy path: if markets instead expect the Fed to be willing to raise rates above the previous cycle's peak, higher forward rates would appear less out of line. Goldman Sachs says markets may need to see a clear end to the tightening cycle and a greater likelihood of rate cuts as the next move before substantially lowering their forward rate expectations.

Goldman Sachs says continued fiscal support during the economic expansion, together with increased demand for AI investment, may be an important reason why the economy needs a higher level of interest rates than previously expected to achieve the Fed's dual mandate.
The two explanations concern different stages: fiscal policy and investment affect the level of interest rates the economy needs; markets, meanwhile, tend to recognize and adjust their pricing of these forces gradually through changes in the Fed's actual and expected policy.