Monetarism's Quiet Return: Lessons for the Fed in a Post-Pandemic World
Monetarism is re-emerging in central bank debates, but its revival depends on adapting to modern financial systems.
Source: Project Syndicate
For decades, monetarism—the belief that controlling the money supply is the key to managing inflation—has been sidelined in favor of more discretionary policy frameworks. Yet recent inflationary pressures have prompted a reevaluation, particularly within the Federal Reserve. This renewed interest, however, comes with a caveat: to be taken seriously, monetarists must update their playbook for a financial landscape far different from the one that shaped their theories.
Key Facts
The article highlights that monetarism is gaining traction again in policy circles, especially at the Fed. This shift is driven by the post-pandemic inflation surge, which has challenged the prevailing view that inflation dynamics are primarily influenced by expectations and real factors. The piece argues that the simplistic version of monetarism—which posits a stable relationship between money growth and inflation—has been discredited by financial innovation and changes in how money is created. However, a more nuanced approach, focusing on the broader monetary aggregates and their velocity, might offer useful insights for policymakers navigating an uncertain economic environment.
Analysis
The resurgence of monetarism is not a return to the rigid rules of the 1980s, but rather an acknowledgment that monetary factors cannot be ignored. The Fed's current framework, which emphasizes average inflation targeting, has been criticized for being too slow to react to money supply growth. The explosion of broad money during the pandemic, followed by a sharp contraction, offers a natural experiment. Monetarists would argue that the lagged effects of this monetary expansion are still working through the economy, potentially keeping inflation elevated for longer than many expect. Conversely, the recent decline in money growth could signal disinflation ahead, but the breakdown in the money-inflation relationship due to changes in the financial system makes this prediction unreliable.
For investors, this debate matters. If the Fed were to adopt a more monetarist stance, it could lead to a more predictable, rules-based policy, reducing market uncertainty. However, it might also imply a higher tolerance for interest rate volatility as the Fed adjusts liquidity to hit money targets. The credibility of any new monetarist framework would hinge on the Fed's ability to communicate its approach clearly and to avoid the pitfalls of the past, such as targeting the wrong aggregate or ignoring shifts in money demand.
Implications
The potential comeback of monetarism has significant implications for global markets and policy. A more monetarist Fed would likely prioritize price stability over maximum employment, potentially leading to a more hawkish tilt in monetary policy. This could strengthen the dollar and put pressure on emerging markets, which often struggle with dollar-denominated debt. For the bond market, a credible commitment to controlling money growth might anchor long-term inflation expectations, but it could also increase short-term rate volatility as the Fed adjusts its balance sheet. Ultimately, the revival of monetarism is less about resurrecting old doctrines and more about integrating monetary analysis into a modern policy toolkit. The challenge lies in distinguishing between the signal and the noise in money data, and in recognizing that the transmission mechanism has evolved. If monetarists can adapt, their ideas might provide a valuable complement to the current framework, offering a clearer guide for policy in an era of uncertainty.