Advance Ruling determinations clarify tax liability and transaction treatment for resident and non-resident applicants before tax authorities. An advance ruling is a determination by the Authority concerning transactions proposed or undertaken by applicants, including determinations on tax liability for transactions by non-residents or by residents involving non-residents, determinations on residents' own tax liability, and decisions on questions of law or fact specified in applications. It also covers decisions on computation of total income pending before tax authorities or the Appellate Tribunal and whether a proposed arrangement is an impermissible avoidance arrangement. The statutory scheme defines eligible applicants, prescribes the application mechanism, and identifies the Authority and Board for Advance Rulings and their officeholders.