Advance ruling on GST clarifies classification, tax liability, input credit admissibility and registration requirements for transactions. Advance rulings under the Uttar Pradesh GST Act permit applicants to seek binding clarity by filing a prescribed application and fee, stating questions confined to specified categories: classification of goods or services; applicability of notifications; determination of time and value of supply; admissibility of input tax credit; liability to pay tax; requirement for registration; and whether a particular act amounts to a supply.