The provisions of appeal before AAAR are dealt in section 99 and 100 of Model GST Law.
If the applicant is aggrieved with the finding of the AAR, he can file an appeal with AAAR. Similarly, if the prescribed or jurisdictional officer of CGST/SGST does not agree with the finding of AAR, he can also file an appeal with AAAR. The word prescribed officer of CGST/SGST means an officer who has been designated by the CGST/SGST administration in regard to an application for advance ruling. In normal circumstances, the concerned officer will be the officer in whose jurisdiction the applicant is located. In such cases the concerned officer will be the jurisdictional CGST/SGST officer.
Any appeal must be filed within thirty days from the receipt of the advance ruling. The appeal has to be in prescribed form and has to be verified in prescribed manner. This will be prescribed in the Model GST Rules.
The Appellate Authority must pass an order after hearing the parties to the appeal within a period of ninety days of the filing of an appeal. If members of AAAR differ on any point referred to in appeal, it shall be deemed that no advance ruling is issued in respect of the question under appeal.