201706.29 0 0 HSN Code on Tax Invoice by chambers in Goods & Services Tax (GST) in India HSN Code on Tax Invoice Harmonised Commodity Description and Coding System (HSN) is a nomenclature based classification conceptualised by the World Customs Organization (WCO). The purpose of HSN was to have harmonization and standardization of Customs procedures and the development of Customs techniques in international trade. Turnover Based HSN Code on Tax Invoice in GST Regime It is provided under Notification No. 12/2017-Central Tax dated 28.06.2017. It will be applicable from 1st July 2017.