Section 15 of the CGST Act and Determination of Value of Supply, CGST Rules, 2017 contains the provisions related to the valuation in GST for the supply of goods or services made in different circumstances and to different persons.
Valuation in GST
Every fiscal statue makes provision for the determination of value as the tax which is normally payable on ad-valorem basis. In GST also, the tax is payable on ad-valorem basis i.e percentage of value of the supply of goods or services.