To study the use of power in the Federal zone, diagnosis of assessing officer and Appeals Committee on legal issues and other countries compared to Thai foreign law that is used to store the excise tax.
To study the use of the power to tax increases in the diagnosis of the Assessment Appeals Board and other laws of the country in comparison with the law in a foreign country in which the tax collection.
To study the use of power in the diagnosis for taxpayer increase of assessment officer and the board consider the appeal in law of comparison with other law in different countries used in tax collection.