Advocate Divesh Chawla has explained the entire law and procedure relating to the Authority For Advance Rulings. He has referred to the numerous controversies that have arisen on the subject and the various judgements that have resolved the controversies. He has highlighted important aspects such as the jurisdiction of the AAR, the binding effect of its rulings, modification and rectification of the ruling etc. The article will prove invaluable for all parties who intend to file proceedings before the AAR