The Zero Lower Bound Remains a Medium-Term Risk

Financial market derivatives indicate that the Zero Lower Bound (ZLB) for interest rates remains a significant medium-to-long-term risk, with the 7-year ahead probability currently around 9%. This risk is influenced by both expected interest rate levels and uncertainty, with the former being the primary driver. Despite higher current expected rates compared to 2018, elevated uncertainty maintains ZLB risk at similar levels, highlighting potential future constraints on monetary policy and warranting attention for long-term investment and hedging strategies.

Analysis

According to an analysis of interest rate derivatives, markets are pricing in a significant medium-to-long-term risk of U.S. monetary policy returning to the zero lower bound (ZLB), despite the federal funds rate currently being well above it. The seven-year-ahead probability of hitting the ZLB stands at approximately 9%, a level comparable to 2018. This risk is primarily a function of two factors: the expected level of future interest rates and the uncertainty surrounding that path. While the expected seven-year-ahead interest rate is currently around 4%, a full percentage point higher than in 2018, this is being offset by considerably elevated uncertainty in the market. Historically, the expected rate level has been the dominant driver of ZLB risk, with the probability increasing nonlinearly as expected rates fall, especially below the 2% mark. The current term structure of ZLB risk is upward-sloping, with the probability rising from about 1% at a two-year horizon to 9% at the seven-year mark, reflecting greater uncertainty over longer timeframes.

Key Decisions for Investors

• Given the persistent medium-term ZLB risk driven by high uncertainty, investors should consider maintaining strategic allocations to long-duration assets, as these could perform strongly if a future economic shock forces the Fed to cut rates back to zero.
• Monitor forward-looking measures of interest rate uncertainty, such as the pricing on interest rate caps and floors, as the analysis shows elevated uncertainty is currently a primary factor sustaining the probability of a return to the ZLB.
• The upward-sloping term structure of ZLB risk, low in the near term but elevated further out, may support yield curve steepening strategies or other positions that differentiate between near-term rate stability and long-term rate volatility.