Appealable order if not appealed against

When an Appealable Order Becomes Final — The Supreme Court’s Doctrine and Its Relevance under GST In tax litigation, finality isn’t just a procedural checkpoint — it’s a cornerstone of certainty. The Supreme Court, in Flock (India) and Priya Blue Industries, laid down a clear rule: once an appealable order is not appealed, it attains finality and cannot be reopened through refund or collateral proceedings. This principle continues to shape GST adjudication — especially in refund disputes and in cases where appeals are dismissed on monetary threshold. It reinforces procedural discipline, protects the statutory appeal framework, and upholds administrative integrity. The latest updated by J the App by JustIDT revisits this doctrine, traces its evolution through landmark judgments, and examines how it operates within the GST regime — including its impact on subsequent periods, refund claims, and departmental assessments. Core takeaway: Challenge through appeal, not collateral review. Finality ensures certainty, consistency, and credibility in tax administration.