This issue shows the increase has been related to the government share on economic topic in the country.
Based on these statistics the amount of tax payments from governmental companies in the year 1380 (2001) has been 6520bilion tomans, comparing to 1100bilion tomans payments in 1383 (2004). the tax payments of these companies show an average between 80.6 percent these years. Referring to these numbers, it's estimated that the governmental companies have paid 7430bilion tomans in the year 1387 (2008).
This amount of rebound increasing tax payments in governmental companies caused the increase of the governmental companies tax shares straight on the total taxes from 26 percent in the year 1383 (2004) to 51 percent in the year 1386(2007). This means that the governmental companies are realized as the main role in earning 110 percent tax payments in these years.
Ibrahim Razaghi , teacher of Iran's economics, analyzed the 25 percent share growth of the tax payments from the governmental companies have showed that the oil share hasn't affected the governments earnings.
