Advance ruling immunity limitation: pending enforcement investigations bar AAR consideration and provide no protection.
The advance ruling mechanism provides tax certainty for proposed or completed transactions, but is inapplicable where the same question is the subject of enforcement proceedings. An applicant seeking a rate and classification ruling for works for a central housing body was found to have concurrent enforcement enquiries and prior inspection, search and seizure, bringing the case within the statutory proviso that excludes advance ruling consideration; clarification that "proceedings" covers enforcement chapters reinforces that AAR cannot provide immunity from ongoing investigations.