What the study found
The study finds that, in Japan, unfunded fiscal shocks were not the main drivers of inflation over the past four decades. Instead, real demand and supply shocks, together with accommodative monetary policy, appear to have mattered more.
Why the authors say this matters
The authors conclude that Japan differs from the U.S. case in how fiscal factors relate to inflation. The findings indicate that understanding Japan's inflation dynamics requires attention to demand, supply, and monetary policy, not only fiscal expansion.
What the researchers tested
The researchers investigated how fiscal factors may have contributed to inflation in Japan over the past four decades. They estimated a medium-scale dynamic stochastic general equilibrium (DSGE) model, a macroeconomic model that uses random shocks to study the economy, developed by Bianchi et al., using Japanese data.
What worked and what didn't
The model-based analysis suggests that unfunded fiscal shocks did not play the dominant role in Japan's inflation outcomes. Real demand shocks, supply shocks, and accommodative monetary policy were estimated to have played more significant roles in shaping inflation dynamics.
What to keep in mind
The abstract does not describe detailed limitations beyond the scope of the study. The findings are based on a specific model and Japanese data over roughly four decades, so the summary here is limited to that setting.
Key points
- The study finds that unfunded fiscal shocks were not the main drivers of inflation in Japan.
- Real demand shocks, supply shocks, and accommodative monetary policy were more important in the model results.
- The analysis covers Japan over the past four decades.
- The researchers used a medium-scale DSGE model estimated with Japanese data.
- The authors say Japan's inflation experience differs from the U.S. case.
Disclosure
- Research title:
- Unfunded fiscal shocks were not Japan’s main inflation driver
- Authors:
- Takeki Sunakawa
- Institutions:
- Hitotsubashi University
- Publication date:
- 2026-04-06
- OpenAlex record:
- View
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