Understanding the 2021–2023 Inflation Surge

The 2021-2023 inflation surge was a complex phenomenon that affected economies worldwide. It was triggered by a combination of factors, including the COVID-19 pandemic and subsequent lockdowns.

The pandemic led to a massive increase in government spending, which was financed by printing more money. This caused a surge in the money supply, leading to higher prices.

As a result, many countries experienced high inflation rates, with the US seeing an average annual inflation rate of 6.2% during this period.

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The 2021–2023 inflation surge was a complex phenomenon with multiple causes. Consumers, flush with cash from pandemic relief programs, encountered shortages of goods they wanted to buy, leading businesses to raise prices.

One of the main drivers of inflation was the global supply chain snarls caused by the COVID-19 pandemic. These snarls were so widespread that many economists blame them more than the stimulus checks for the burst of inflation.

Inflation surged starting in 2021 as the economy began to recover from the pandemic, and picked up speed in 2022 as the shock of COVID-19 worked its way through the complex supply chains of the international economy. The worst of inflation was relatively short-lived, with annual core PCE inflation peaking at 5.6% in 2022.

The Federal Reserve hiked interest rates to a two-decade high in an attempt to quench inflation's fires, but the stubbornness of the "last mile" of high inflation is still roiling the economy. Investor expectations that inflation will remain above target have helped push up yields on 10-year treasuries, keeping mortgage rates high and frustrating would-be homebuyers.

Here are some key statistics that illustrate the impact of inflation:

The COVID-19 pandemic caused massive supply chain disruptions, rivalling in magnitude what Japan saw after the Fukushima nuclear disaster in 2011. These disruptions lasted far longer in the U.S.

Supply chain disruptions led to a spike in delivery delays, which in turn caused firm margins to rise sharply. This rise in margins has yet to normalize.

Purchasing manager indices (PMIs) for 45 economies show that input prices, what firms pay suppliers, increased due to supply chain disruptions.

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Supply chain disruptions during the COVID-19 pandemic were massive, rivalling the magnitude of what Japan saw after the Fukushima nuclear disaster in 2011, but lasting far longer in the US.

Delivery times were severely delayed, with output prices rising more than input prices, a trend that correlates with the COVID-19 inflation spike. Our margins proxy, a novel measure of supply chain disruption, fell much more slowly and is only now about to go into negative territory.

Firms raised their margins at the height of COVID-19, which is a sign of supply chain disruption, and this is a distinct explanation for margin-expansion that is perhaps more plausible than "greedflation."

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The COVID-19 pandemic brought about unprecedented economic challenges, and one of the key debates is whether unconventional policy caused the subsequent inflation surge. The data suggests that the case for overheating is not strong, as GDP has largely recovered but remains below its pre-COVID trend.

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The pandemic led to a sharp decline in services consumption, which is only now nearing its pre-COVID trend. In contrast, goods consumption rose sharply during COVID-19. This uneven recovery is a crucial aspect to consider when evaluating the impact of policy on inflation.

Research has investigated whether unconventional monetary and fiscal policy enacted in response to the pandemic contributed to the inflation surge. The findings are clear: a null result was established across all empirical strategies, including event studies, vector autoregressions, and regional panel regressions. This challenges the popular view that pandemic-era stimulus caused recent inflation.

The key economic mechanism at play is a disinflationary supply-side channel in the Phillips curve, which offsets the upward pressure on inflation from the usual demand channel. This mechanism is supported both theoretically and empirically, providing a more nuanced understanding of the relationship between policy and inflation.

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The COVID-19 pandemic caused a significant disruption to supply chains worldwide. Supply chain disruptions were massive in size, rivalling what Japan saw after the Fukushima nuclear disaster in 2011. However, COVID-19 supply disruptions in the U.S. lasted far longer.

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Delivery times were severely affected, with suppliers facing delays in delivering goods to customers. Output prices rose more than input prices, a rise that correlates with the COVID-19 inflation spike. Firms raised their margins at the height of COVID-19 to preserve inventory.

The pandemic led to a sharp decline in services consumption, which is only now nearing its pre-COVID trend. Goods consumption rose sharply during COVID-19, but the overall economic activity was still below its pre-COVID trend. This suggests that the economy was not overheating, but rather experiencing a slow recovery.

Firms' margins have been slow to normalize, and are only now about to go into negative territory. This indicates that margins are falling, which could lead to disinflation going forward. The preferred measure for labor market tightness, the vacancy-to-unemployment ratio, rose sharply during the pandemic, suggesting that the high number of vacancies relative to unemployed may have contributed to rising inflation.

The pandemic also led to a sharp rise in oil prices, which could have contributed to the inflation surge. The trade-weighted dollar also moved in a way that potentially impacted inflation.

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Inflation surged starting in 2021 as the economy began to recover from the pandemic, and picked up speed in 2022 due to supply chain snarls.

The burst of inflation happened almost all over the world, with many economists blaming the supply chain snarls more than the stimulus checks. This was largely due to consumers encountering shortages of the stuff they wanted to buy, causing businesses to raise prices.

In 2022, annual core PCE inflation reached as high as 5.6%, but has since fallen dramatically. Despite hiking interest rates to a two-decade high, Fed officials have struggled to bring inflation fully under control.

Here's a breakdown of the main drivers of the 2021-2023 inflation surge:

The stubbornness of the "last mile" of high inflation is still roiling the economy, with investor expectations that inflation will remain above target helping to push up yields on 10-year treasuries.

The 2021–2023 inflation surge was a global phenomenon that caught many by surprise. Various studies have investigated this trend, providing valuable insights into its causes and implications.

A global database of inflation has been created to track and analyze inflation rates across different countries and regions. This database is a valuable resource for policymakers and researchers.

Researchers have also examined the transition from low to high inflation in emerging market and developing economies, highlighting the challenges and opportunities that come with this shift. The book "Inflation in Emerging and Developing Economies: Evolution, Drivers, and Policies" provides a comprehensive overview of this topic.

A working paper, "Inflation During the Pandemic: What Happened? What is Next?", offers a detailed analysis of the impact of the pandemic on inflation rates and provides insights into the future of inflation.

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