How much of recent inflation did deficits cause?
Core argument: The authors estimate an "inflation multiplier" of 0.18% price-level growth over two years for a 1% deficit-to-GDP shock, implying the 2021 U.S. deficits caused around 30% of 2021–22 inflation.
This paper measures the causal effect of deficits on inflation using a “high frequency narrative approach”. We identify an event that released news about the 2021 deficits in the United States—the Georgia Senate election runoff. Figure 4 graphs the results for the single event study. The figure shows a jump in inflation expectations around the election, representing the causal effect of the Georgia shock. The outcome variable is the expected increase in the price level over two years, which is calculated from the two year inflation swap, deducting the first value on January 5th. From January 5th to January 7th—as news about the Georgia election is released—the inflation swap jumps upwards. The green line is the estimate of what would have happened to inflation expectations absent the Georgia election. The difference between the blue and green lines is the causal effect of the election on inflation expectations. Excluding data after 2PM on January 6th leads to a qualitatively similar but smaller estimate of 18 basis points. We estimate an “inflation multiplier” of 0.18% price level growth over two years, for a 1% deficit-to-GDP shock. Our estimate implies that the 2021 deficits caused around 30% of the 2021-22 inflation—meaning deficits were important but not the only cause.





