Central banks are supposed to set the price of money. That simple principle has underpinned modern monetary policy for decades. Markets responded to the Federal Reserve, interpreted its guidance and adjusted financial conditions accordingly. Investors spent countless hours attempting to anticipate the next move in the federal funds rate because the central bank was the undisputed anchor of the global financial system. Kevin Warsh may have just admitted that this relationship has changed. His second press conference as Chairman of the Federal Reserve was not remarkable because interest rates remained unchanged. That decision had largely been anticipated. Nor was it remarkable because three members dissented in favour of an immediate increase, although such divisions reveal growing concern within the Federal Open Market Committee itself. What unsettled markets was something far more profound. Warsh openly suggested that rising long-term Treasury yields were already doing part of the Federal Reserve’s work. That statement may prove to be one of the most consequential remarks made by a Federal Reserve Chairman in decades. It implies that the transmission mechanism of monetary policy has fundamentally changed.

For years, investors believed that the Federal Reserve moved first and markets followed. Warsh is effectively arguing that markets may increasingly move first while the Federal Reserve follows. The distinction appears subtle. It is anything but. His reasoning is straightforward. Since the Federal Reserve reduced its forward guidance, Treasury yields have risen significantly across the curve as investors responded directly to incoming economic information rather than waiting for official signals. Financial conditions therefore tightened without any change in the policy rate. In Warsh’s view, this represents success. Markets have become more autonomous. Prices incorporate information continuously rather than merely reacting to central-bank communication. The Federal Reserve no longer needs to micro-manage expectations through increasingly elaborate guidance. It can allow markets to perform part of the adjustment themselves. Intellectually, the argument possesses considerable elegance. Financial markets should price risk. Central banks should not attempt to substitute themselves for markets. Forward guidance arguably became too dominant after the financial crisis, conditioning investors to expect constant reassurance from policymakers. Warsh wants to reverse that dependency. There is merit in that ambition.

The problem is that markets interpreted his remarks very differently. Rather than celebrating greater policy flexibility, investors questioned whether the Federal Reserve remained prepared to act decisively against inflation. The reaction was immediate. Thirty-year Treasury yields surged to their highest level since 2007. Inflation expectations embedded in bond markets moved higher. The dollar weakened. Equities declined. Meanwhile, shorter-dated Treasury yields actually fell as investors postponed expectations of immediate rate increases. The yield curve steepened sharply, reflecting growing concern that inflation would remain elevated over the longer term even if short-term policy remained unchanged. This combination is particularly revealing. Markets did not believe monetary policy had become tighter. They believed credibility had become weaker. There is an important distinction between tighter financial conditions and credible monetary policy. Both may produce higher bond yields. The reasons behind those higher yields, however, are entirely different. Higher yields generated by confidence in economic growth represent strength. Higher yields generated by fears of inflation represent distrust. Warsh appears to believe markets have tightened because they correctly recognise inflation risks. Many investors appear to believe markets have tightened because they doubt the Federal Reserve will respond forcefully enough. The difference matters enormously.

History repeatedly demonstrates that central banks ultimately lose control not when inflation first accelerates, but when markets begin questioning their willingness to respond. Inflation is partly an economic phenomenon. It is equally a psychological one. Once households, companies and investors begin doubting the central bank’s commitment, inflation expectations become progressively more difficult to anchor. That process eventually feeds back into wages, pricing decisions, long-term contracts and financial markets. Credibility becomes monetary policy’s most valuable asset. Warsh understands this perfectly. Throughout his public appearances, he has repeatedly insisted that there is no flexible inflation target and that the Federal Reserve remains fully committed to restoring price stability. His rhetoric has been unmistakably hawkish. Yet rhetoric alone cannot substitute for policy. Markets do not judge central banks by their language. They judge them by the consistency between words and actions.

This explains why three dissenting votes within the Federal Open Market Committee matter more than their numerical significance. Lorie Logan, Beth Hammack and Neel Kashkari all argued for an immediate increase in interest rates. Their disagreement illustrates that concerns about inflation are no longer confined to external commentators or financial markets. They now divide the committee itself. Institutional disagreement is not necessarily unhealthy. Healthy debate improves decision-making. Public disagreement, however, inevitably raises questions regarding the coherence of policy. Particularly when inflation remains well above target. Warsh therefore finds himself confronting an unusually complex communication challenge. He wishes simultaneously to reduce forward guidance, restore market discipline and maintain confidence in the Federal Reserve’s anti-inflation credentials. Each objective is individually reasonable. Collectively, they may prove difficult to reconcile. Reducing forward guidance inevitably increases uncertainty. Greater uncertainty increases market volatility. Higher volatility raises risk premia. Higher risk premia push long-term yields higher. The crucial question becomes whether those higher yields represent successful market discipline or deteriorating confidence. Markets increasingly appear to favour the second interpretation.

This is why the debate extends well beyond the next quarter-point decision. The Federal Reserve has spent nearly three decades carefully refining its communication strategy. Alan Greenspan embraced deliberate ambiguity. Ben Bernanke introduced unprecedented transparency. Janet Yellen expanded forward guidance. Jerome Powell transformed press conferences into routine policy instruments. Each evolution reflected changing circumstances. Warsh is attempting another transformation. His objective is to restore uncertainty. Not uncertainty about inflation. Uncertainty about policy. His argument is that markets should focus less on deciphering Federal Reserve language and more on analysing the underlying economy. There is intellectual consistency here. Unfortunately, financial markets dislike uncertainty almost as much as they dislike inflation. When information becomes scarce, investors fill the vacuum themselves. That appears precisely what has happened. Rather than waiting for clearer signals, markets have constructed their own conclusions. Long-term inflation risks have increased. The Federal Reserve may remain behind the curve. Higher long-term yields are therefore necessary. Ironically, Warsh’s communication strategy may have achieved exactly the opposite of its intended purpose.

Warsh may therefore be correct that markets must assume greater responsibility for pricing macroeconomic risk. The difficulty lies in the transition. Changing communication frameworks while simultaneously confronting structurally higher inflation creates an unusually delicate balance. Can a central bank reduce guidance without reducing credibility? The answer remains uncertain. That scepticism extends beyond the United States. Global investors are increasingly reallocating capital towards countries where central-bank reaction functions appear more transparent. Australia, parts of Europe and several Asian fixed-income markets have begun attracting investors seeking both diversification and greater policy clarity. The issue is no longer solely the level of American yields. It is the predictability of American monetary policy.

The real question concerns authority. Who now determines monetary conditions? The Federal Reserve or the bond market? For decades the answer appeared obvious. Today it is becoming considerably less so. Warsh believes markets should increasingly determine financial conditions themselves. Markets appear to agree. But they are also reminding him of an uncomfortable truth. Markets do not simply transmit credibility. They also judge it. When central banks lose control of expectations, bond investors become the final arbiters of monetary policy. The Federal Reserve still sets the overnight interest rate. The bond market increasingly determines the price of money. That distinction may define the next chapter of global monetary policy. And it may also prove to be Kevin Warsh’s greatest challenge.