The optimal rate of capital gains taxation in the asset market

Capital gains taxation, especially in the field of assets such as currency, gold, stocks, and real estate, can be an advantageous way to deal with fluctuations and reduce profitability in the related markets. However, the economy of Iran has not benefited from capital gains tax capacity in recent years, which, along with the increase in the amount of liquidity and the lack of a convenient business environment, has increased motivation for mercantilism activities in the mentioned markets. This article aims to investigate the effect of foreign exchange, gold, stock, and real estate assets on the country's GDP and investment growth and determine the optimal tax rate on the mentioned assets. The results of this study exhibited that the highest optimal tax rate based on the GDP function related to gold assets at 92.3% and based on the investment function related to foreign exchange assets at 93.2%. The lowest optimal tax rates in production and investment functions related to real estate assets are 69.2% and 52.1% respectively.