Investigating the Effect of Financial Development and Tax on the Underground Economy; Evidence from Iran's Economy

The purpose of this paper is to examine the effect of financial development and tax on the size of the underground economy. The importance of this is because the large size of the underground economy of the three channels has a negative impact on the economy, first the diversion of economic data; second, the ineffectiveness and effectiveness of the state's economic policies; and third, because of the possibility of escaping Tax payments and non-compliance with legal requirements in the underground economy are in the interests of national interests, producers and households. Therefore, any policy that leads to a smaller underground economy is key. In this research, a model (TVP-FAVAR) with the aim of investigating the effect of financial development and tax evasion on the underground economy of Iran along with other related variables has been specified. For this purpose, time series data were used in the period 1350 to 1394 and two tools of instantaneous and cumulative response functions. The results of this study indicate that the underground economy's dynamics in response to the financial development shock has been a decreasing trend and increasing terms of tax evasion shock.