Joseph Gagnon on the Trinity of COVID-era Inflation and the Upcoming Fed Framework Review

Episode Summary

Executive Summary: Joe Gagnon argues the COVID inflation surge came from an “unholy trinity” of shocks: massive fiscal demand, pandemic-related durable-goods and supply disruptions, and the Ukraine/commodity shock. He says disinflation has been unusually smooth because inflation expectations stayed anchored, the Fed communicated credibly, and policy tightened forcefully once it moved.

Main Topics: Overall assessment of the post-COVID disinflation (Priority: 5/5): Beckworth and Gagnon assess whether the inflation fight is over. Gagnon says the outcome has been far better than expected, but cautions against declaring victory too early because surprises are always possible. Why the inflation surge was missed (Priority: 5/5): Gagnon explains that almost nobody foresaw the surge because three distinct shocks merged at once: fiscal stimulus, pandemic supply/demand distortions, and the Russia-Ukraine commodity shock. Inflation expectations and Fed credibility (Priority: 5/5): They discuss why long-term inflation expectations remained anchored despite the price level jump. Gagnon emphasizes the Fed’s long-run credibility and repeated communication that inflation would return to target. The trinity of COVID-era inflation (Priority: 5/5): Gagnon’s paper decomposes inflation into durable goods, nondurable goods, and services, linking each to a different shock: semiconductor/durable-goods disruption, commodities/Ukraine, and labor-market tightness. Nonlinear Phillips curve and labor-market slack (Priority: 4/5): The conversation covers how COVID broke standard unemployment-based Phillips curve analysis and why vacancy-to-unemployment ratios better captured labor-market tightness during the pandemic. Comparison with the Korean War inflation (Priority: 4/5): A forthcoming paper argues COVID inflation resembled the Korean War surge: rapid rise and fall, strong durable-goods demand, and stable expectations, unlike the ratcheting inflation of the 1970s oil shocks. Federal Reserve framework review and nominal GDP targeting (Priority: 5/5): They discuss whether the Fed should revise its 2019-20 framework, with Gagnon favoring nominal GDP as a simple, informative benchmark that captures both output and inflation dynamics.

Key Arguments: The COVID inflation surge was not caused by one factor but by a rare combination of three shocks that aligned at once, which is why most forecasts failed. The fiscal package was enormous relative to the economy; textbook macro would have predicted stronger nominal demand and at least some inflation even without the other shocks. Long-term inflation expectations stayed remarkably stable because the Fed had a long record of low inflation and communicated clearly that it would reverse the inflation surge. Short-term expectations moved only after inflation was already visible, but five- to ten-year expectations remained essentially anchored, which helped disinflation. Standard unemployment-based Phillips curve measures broke down during COVID because the effective natural rate shifted sharply for non-demographic reasons. Vacancy-to-unemployment ratios and nonlinear Phillips curve specifications fit pandemic labor-market conditions better than unemployment alone. The durable-goods boom and semiconductor shortage were central to the U.S. inflation experience, while Europe was hit harder by commodity and food shocks. COVID inflation and Korean War inflation both featured a surge in durable-goods demand and a rapid return of inflation to its prior level, consistent with strong policy credibility. The Fed’s framework likely was not the main error; the bigger mistake was forecasting, especially missing the size and effect of fiscal stimulus. Nominal GDP targeting is attractive because it is simple, captures what monetary policy most directly influences, and helps stabilize expectations and debt burdens.

Data Points: Fiscal stimulus scale: “on the order of World War II” / “biggest in peacetime history” - Used to describe the size of COVID-era fiscal stimulus and its likely demand impact. Forecast for unemployment: “two point something” - Gagnon said he expected unemployment to fall to the low-2% range in the inflationary boom scenario he foresaw. Forecast for inflation: “around four or so” - Gagnon’s pre-pandemic forecast for inflation under strong fiscal stimulus, before considering the pandemic and Ukraine shocks. CBO estimate of fiscal gap: “near $600 billion” - Beckworth says the CBO projected a much smaller need than the roughly $2 trillion added in the second package. Extra fiscal package: “$2 trillion” - Referenced as the additional stimulus that may have helped push aggregate demand beyond potential output. Fed target: 2% - Repeatedly referenced as the inflation target that expectations and policy were expected to return to. Nominal r-star estimate: 2.9 - Gagnon cites the Fed’s then-current nominal neutral-rate estimate, implying a real r-star just under 1%. Real r-star estimate: just under 1% - Derived from the nominal neutral-rate estimate after subtracting inflation. Potential future neutral rate: 3.5% nominal / 1% to 1.5% real - Gagnon’s view of where U.S. neutral rates may settle given demographics and fiscal outlook. Duration of durable-goods surge in Korea: “6 to 12 months” - In the Korean War analogy, durable-goods inflation collapsed quickly after the initial surge. Duration of durable-goods surge in COVID: “12 to 24 months” - COVID durable-goods inflation persisted longer than in the Korean War, partly because of commodity shocks and slower normalization. Number of major postwar U.S. inflation surges identified: 4 - Korean War, first oil shock, second oil shock, and COVID are cited as the four big post-1949 inflation surges. War financing in Korean War: entirely by taxes - Used to explain why Korean War inflation faded quickly and did not ratchet higher like the 1970s shocks. Publication timing: forthcoming in the fall - The Korean War comparison paper was described as awaiting Peterson Institute publication later in the year.

Pivotal Quotes: "“Nobody got it fully right.”" — Joe Gagnon: He explains that COVID inflation required three distinct shocks, making accurate prediction extremely difficult. "“The Fed started acting… when it acted, it acted very forcefully.”" — Joe Gagnon: Discussing why long-term inflation expectations remained anchored and disinflation succeeded without a deep recession. "“I like nominal GDP targeting, David. And I think it’s the right focus for monetary policy.”" — Joe Gagnon: On why nominal GDP should be considered as a benchmark or framework for the Fed.

Implications: The episode suggests the Fed’s credibility remains strong, but future policy should better track nominal spending and labor-market distortions. A nominal GDP benchmark could improve framework reviews and help avoid repeating 2021 forecasting errors.