From High Courts to GSTAT: Taxpayers navigate partial rollout and mounting caseload

India’s long-awaited Goods and Services Tax Appellate Tribunal (GSTAT) system is finally taking shape and its partial functionality has already begun influencing tax litigation strategy. .Tax practitioners warn that it faces an "archaeological accumulation" of disputes and risks inheriting the very backlog it was meant to resolve..According to official data, 44 GSTAT benches have been sanctioned by the Union government, including the Principal Bench in New Delhi. Of these, only the Principal Bench is fully functional, operating 5 courts including a registrar court. Across the country, most benches remain either non-operational or only partially staffed. Major commercial centres like Mumbai, Pune, Ahmedabad, Hyderabad and Jaipur still have no functional benches, while hubs such as Bengaluru, Chennai and Lucknow have only one court each..This implementation comes after nearly a decade-long gap since the introduction of GST in 2017, when the appellate tribunal framework existed on paper but not in practice. In the absence of the GSTAT, taxpayers were forced to approach High Courts directly, often invoking writ jurisdiction for relief.“The taxpayers had no recourse other than to approach the already overburdened High Courts under extraordinary writ jurisdiction, thereby getting uneven interpretations across jurisdictions and still getting no statutory relief because the factual aspects were never really considered,” SR Patnaik, Partner and Head of Taxation at Cyril Amarchand Mangaldas said. .Even with limited operational benches, GSTAT has begun altering how disputes are approached. The mere existence of the tribunal has closed off what was once a widely used route to High Courts..Keshav Garg, Partner at chartered accountancy firm CNK & Associates LLP, noted, “The moment GSTAT was formally launched, High Courts started pushing back on writ petitions that were essentially appellate in nature. The old ‘no alternative remedy’ argument, which has practically a free pass into the High Court, has lost much of its force,” he said. .Sudipta Bhattacharjee, Partner of Indirect Taxes at Khaitan & Co, identified immediate shifts in litigation strategy. “It activated a substantive limitation framework, so taxpayers and GST departments could no longer treat the absence of GSTAT as an open-ended excuse for waiting. It materially narrowed the space for using writ petitions as a substitute for GST second appeal,” he said..Under Section 112(8) of the CGST Act, taxpayers are required to make a pre-deposit of 20% of the disputed tax amount to pursue an appeal before the tribunal. Garg said that this requirement is now central to litigation planning, with clients reassessing whether their disputes merit escalation.Thousands of writ petitions were filed over the years due to the tribunal’s absence, many of which are still pending. High Courts have now started directing writ petitions filed against appellate orders to the GSTAT, particularly where no constitutional or jurisdictional issues are involved..However, this transition is particularly tricky in cases where High Courts granted stays without any pre-deposit. “When GSTAT becomes fully operational, the department will push for these writs to be closed and the taxpayer directed to the tribunal,” Garg explained. “But that means the stay falls, pre-deposit kicks in and the taxpayer is suddenly exposed.”Bhattacharjee cautioned that taxpayers cannot rely on old interim stays to bypass the mandatory pre‑deposit before GSTAT. “They will need to study the exact text of the interim orders, reconcile the amounts paid (if any),” he said. He also clarified that cases involving vires, jurisdiction, or a serious breach of natural justice may still properly remain in writ court..Patnaik warned of acute cash-flow disruptions for businesses that had relied on High Court protection for years and who will be expected to make deposits with GSTAT.Limitation issues also loom large. Taxpayers whose writ petitions are dismissed after long delays may need condonation of delay when approaching GSTAT, raising further legal complexities..While the tribunal promises to streamline dispute resolution, it inherits a daunting caseload. “GSTAT is inheriting not a backlog but an archaeological accumulation of disputes,” Patnaik said, underlining the scale and complexity of the challenge.Bhattacharjee similarly cautioned against treating the problem through traditional case-by-case adjudication. “GSTAT can effectively deal with this massive caseload only if it treats the backlog as a managed inflow problem, not as a traditional one-case-at-a-time docket,” he said..The risks are made worse by the manner in which GST is administered. Shareen Gupta, Partner at JSA Advocates and Solicitors, pointed out, “A significant proportion of GST disputes are born not from genuine legal ambiguity but from poor adjudication at the departmental level.”Without systemic improvements, experts warn, the tribunal could quickly become overwhelmed. To address the volume, practitioners are calling for procedural innovation and disciplined case management..Bhattacharjee highlighted the May 2026 office order which mandates first-level screening by division benches, category-based allocation of cases and limits single-member benches to smaller matters without substantial legal questions.The Principal Bench in Delhi has also been given exclusive jurisdiction over nationally significant issues, including cases involving identical questions of law across multiple states. This centralisation could help avoid conflicting rulings and ensure consistency.“If this transfer and clustering power is used strategically along with available technological tools, GSTAT can hear common-issue cases together, reduce duplication and avoid multiple benches reinventing the same answer,” Bhattacharjee added.Gupta also suggested the creation of subject-matter benches focusing on high-frequency disputes such as classification and ITC reversals, along with a stronger advance ruling mechanism to divert cases away from litigation altogether..Lawyers stressed the need for disciplined government litigation. Bhattacharjee pointed to the Central Board of Indirect Taxes and Customs (CBIC) circular of 2024, which set monetary thresholds for departmental appeals, as a key tool to reduce unnecessary litigation. “A tribunal with a six-figure opening balance cannot afford mechanically filed revenue appeals on every minor issue,” he said.Garg suggested that imposing costs on frivolous appeals from both taxpayers and the department could significantly improve litigation quality. He also called for a publicly searchable precedent database to reduce repetitive disputes..For now, however, the tribunal’s promise remains constrained by its incomplete rollout. With only a handful of benches operational and major commercial centres yet to see functional courts, access to appellate remedies remains uneven.As skeletal benches take on a decade’s worth of disputes and High Courts begin to shut the writ backdoor, GSTAT now sits at the centre of India’s GST dispute architecture.