Refund of application fee: advance ruling applications are not refundable even if the applicant withdraws the application.
There is no statutory or regulatory provision permitting refund of fees paid for advance-ruling applications; fees are retained and not returned on withdrawal, a position noted in the Service Tax Practice Manual and reflected in the Authority for Advance Rulings decision cited.

Advance ruling review barred except when ruling procured by fraud or misrepresentation, enabling annulment under law.
The Authority for Advance Rulings lacks jurisdiction to reconsider or review its own ruling absent a substantiated mistake of law or fact or a mistake apparent from the record warranting rectification or amendment under the procedural regulations; however, a previously announced ruling may be declared void ab initio if it is shown to have been obtained by fraud or misrepresentation of facts.

Advance ruling jurisdiction excludes Board circulars; notifications by the government are distinct and control admissibility.
Advance ruling jurisdiction does not extend to Board circulars because the statute expressly contemplates government notifications for advance-ruling purposes while omitting circulars; the power to issue circulars is conferred on the Board under the Central Excise framework made applicable to service tax, whereas notification-making power in the service-tax provisions is vested in the Central Government, producing a statutory limitation on advance-ruling admissibility.

Government company eligibility for advance ruling confirmed; subsidiaries retain separate legal personality and may also apply.
A government company is eligible to apply for an advance ruling and a subsidiary of a government company may also file because the holding company and each subsidiary are separate legal entities with independent rights to apply; a step-down subsidiary falls within the definition of an applicant, rendering its advance-ruling application maintainable.

Writ remedy against advance rulings where no statutory appeal exists; seek High Court review under constitutional writ jurisdiction.
No statutory appeal exists against orders of the Advance Ruling Authority; the available remedial route is a writ petition invoking constitutional writ jurisdiction in the appropriate High Court. The Supreme Court has indicated parties should approach the High Court rather than seek direct original jurisdiction at the apex court, and courts are urged to allocate and expedite fiscal writ matters.