The wide scope of influence and effectiveness has turned inflation into one of the most important subjects of empirical studies as well as one of the main axes of policy making. In addition to the causes and effects of inflation, some economists have paid attention to t
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The wide scope of influence and effectiveness has turned inflation into one of the most important subjects of empirical studies as well as one of the main axes of policy making. In addition to the causes and effects of inflation, some economists have paid attention to the inflation index. Based on this, current inflation is not considered a suitable indicator for policy making and modeling due to high fluctuations. On the other hand, core inflation as a stable component of current inflation is a more suitable indicator for economic policies due to its stability. In this paper, we investigate the dynamics of macroeconomic variables and inflation core gap using SVAR method, n Iran's economy in the period of1998-2021. The momentum of oil price fluctuations and liquidity do not have a significant impact on the core inflation gap. The core inflation gap is most influenced by currency impulses and its own fluctuations, which shows the impact of inflation expectations on the formation of core inflation; According to the findings of the research, it is suggested to control exchange rate fluctuations and target core inflation in order to control inflationary expectations.The results show that the core inflation index has been more stable compared to the inflation rate and exchange rate fluctuations have the greatest impact on the core inflation gap.
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