The architecture of GST litigation

The GST regime, in force since 1 July 2017, fundamentally restructured indirect-tax adjudication in India. The CGST Act, 2017 created a four-tier litigation hierarchy that taxpayers must navigate: (1) the proper officer at the adjudication stage, (2) the first appellate authority, (3) the GST Appellate Tribunal (GSTAT, now operationalised after years of delay), and (4) the High Courts and Supreme Court. Outside this hierarchy, taxpayers retain the writ remedy under Article 226, but Indian courts have become increasingly strict about confining writs to clear jurisdictional or natural-justice failures.

What makes GST litigation distinctive is the limitation discipline, the self-assessment architecture (the taxpayer files returns and the Department audits/scrutinises later), and the pre-deposit obligations at each appellate stage. A taxpayer who loses at adjudication faces a 10% pre-deposit to file the first appeal, a further 20% (subject to an aggregate cap) for the GSTAT, and discretionary deposits at the High Court. These cumulative deposits compound into a real cost-of-litigation question, particularly for SMEs.

This pillar walks through every stage of GST litigation with the framework Accorg uses for client matters. We assume a working knowledge of GST mechanics — input tax credit, reverse-charge, place-of-supply rules — and focus on the dispute-resolution layer where outcomes are won or lost.

Where this fits: GST litigation interacts with three other regimes — customs duty disputes go to CESTAT, FEMA contraventions go to the ED Adjudicating Authority, and corporate tax disputes go to ITAT. Cross-tagged matters require coordinated forum selection on Day 1.

Section 73 vs Section 74 — the framing question that decides everything

Every GST adjudication notice begins with a framing decision by the proper officer: Section 73 (non-fraud, non-suppression) or Section 74 (fraud, willful misstatement or suppression of facts to evade tax). The framing dictates the limitation period, the penalty quantum, and the pleading structure of the defence.

The Section 74 framing requires positive evidence of fraud, willful misstatement or suppression of facts. The Supreme Court and several High Courts have emphasised that the Department cannot allege Section 74 merely because a longer limitation period suits its convenience. Northern Operating Systems v. CST and a series of Madras and Delhi HC rulings have set aside Section 74 SCNs where the Department's allegations were essentially interpretation disputes dressed up as suppression.

Practitioner reality: Departmental SCNs increasingly invoke Section 74 to capture older transactions. The first defensive move is almost always to challenge the Section 74 framing — succeed there and the SCN may be time-barred entirely, or at minimum the penalty exposure drops from 100% to 10%. The framing fight is rarely irrelevant.

The Show Cause Notice — anatomy and reply structure

A GST Show Cause Notice (SCN) is issued under Section 73(1) or 74(1) and must contain: (a) the period in question, (b) the alleged tax demand with break-up by tax-head and FY, (c) the statutory ground (which sub-section, which alleged transaction or input-tax-credit reversal), (d) the proposed penalty and interest, and (e) the time and place for personal hearing. SCNs without these particulars are routinely set aside on natural-justice grounds.

The taxpayer's reply has three dimensions:

1. Procedural defences

• Limitation: Verify the SCN is within the 2y9m / 4y6m period. Attach computation.
• Section 74 framing challenge: Where the SCN alleges suppression but the underlying issue is interpretation, plead that the matter falls under Section 73 only.
• Lack of jurisdiction: Where the SCN is issued by an officer without jurisdiction over the taxpayer's registration.
• Multiple SCNs for same period / issue: Section 75(2) bars second SCN on identical issues.
• Pre-deposit not in dispute: Where part of the demand has already been paid, plead it as a partial settlement.

2. Merits defences

The substantive defences depend on the nature of the demand. Common patterns:

• ITC denial: Establish receipt of goods/services, GSTR-2A/2B reconciliation, vendor compliance status, and the legislative position post-Section 16(2)(aa) and Rule 36(4) amendments.
• Classification disputes: Cite HSN classification rulings, tariff explanatory notes, and AAR/AAAR decisions on the disputed product.
• Place-of-supply / IGST disputes: Map the transaction trail; cite Section 7–13 IGST Act provisions; refer to Mohit Minerals for principles on cross-border services.
• Valuation disputes: Section 15 CGST and Rule 27–35 of CGST Rules; arm's-length pricing for related-party supplies; bundled-supply principles.
• Refund/IDS reversal disputes: Section 54 refund principles; inverted-duty structure refunds; export refund timelines.

3. Evidentiary discipline

The reply must be backed by documentary evidence: GSTR-1 / 3B / 9 returns, e-way bills, invoices, vendor reconciliations, bank statements, contracts, supplier compliance certificates. SCNs are typically defended on the strength of the evidentiary trail rather than legal argument alone. Where evidence is voluminous, structure the reply with annexure indices and statement-of-account summaries.

For a deeper dive into the reply mechanics, see our practitioner article: GST Show Cause Notice Reply: A 12-Step Practitioner Checklist.

First appellate authority — Section 107

Where the proper officer's adjudication order is unfavourable, the taxpayer's first appeal lies to the Appellate Authority under Section 107 CGST Act. The procedural mechanics:

• Limitation: 3 months from communication of the order (extendable by 1 month on showing sufficient cause).
• Pre-deposit: 10% of the disputed tax amount (subject to a cap of ₹25 crore for CGST + ₹25 crore for SGST).
• Forum: Joint Commissioner / Additional Commissioner (Appeals) for orders by AC/JC; Commissioner (Appeals) for higher-stake matters.
• Hearing: Physical or virtual personal hearing before the order.

The first-appeal stage is the most critical economic decision for an SME in a GST dispute. The 10% pre-deposit is non-refundable until final disposal, and the appellate authority typically takes 6–18 months to dispose. For a ₹5 crore demand, that's ₹50 lakh locked up — plus interest accruing on the disputed balance.

Strategic note: Where the demand is partly indefensible (say, 30% of the demand has weak grounds) and partly defensible, sophisticated taxpayers concede the indefensible portion at the SCN reply stage to bring the disputed amount down. This minimises pre-deposit, reduces interest exposure, and signals good faith — improving the appellate authority's reception of the merits arguments on the contested portion.

The Appellate Authority's order can: (a) confirm the original order, (b) modify or reduce the demand, (c) set aside and remand, or (d) set aside entirely. Under Section 107(11), the Appellate Authority cannot enhance the demand without a separate notice and hearing.

GSTAT — operationalised, finally

The Goods and Services Tax Appellate Tribunal (GSTAT) was constituted under Section 109 CGST Act in 2017 but remained non-functional for years due to constitutional challenges and member-appointment delays. The Tribunal was reconstituted with the Finance Act, 2023 amendments and benches were notified in 2024-25; by 2026 the Principal Bench (Delhi) and most state benches are operational.

Jurisdiction and benches

GSTAT is a national tribunal with a Principal Bench at Delhi (handling pan-India matters and IGST appeals on place-of-supply) and 31 state/area benches. The Principal Bench has a President (judicial) and judicial + technical members; state benches have a judicial and a technical member.

Limitation and pre-deposit

• Limitation: 3 months from the order of the Appellate Authority (extendable by 3 months on sufficient cause).
• Pre-deposit: 20% of the remaining disputed amount (over and above the 10% paid at first appeal), subject to a cap of ₹50 crore aggregate (CGST + SGST). The aggregate cap structure was confirmed by Finance Act 2023.
• Pleadings: Memorandum of appeal, statement of facts, grounds of appeal, signed verification, fee, and the impugned order.

What GSTAT changes for taxpayers

Before GSTAT operationalisation, taxpayers either had to (a) accept the first-appellate order, or (b) move to the High Court under Article 226. The High Court route is narrow — confined to jurisdictional / constitutional issues — and many taxpayers were effectively cornered. With GSTAT now functional:

• Merits review is available at one more level; the GSTAT can examine facts and law afresh.
• National consistency on pan-India issues becomes possible through the Principal Bench.
• Pre-deposit economics shift — total deposit at GSTAT stage is up to 30% (10% + 20%) capped at ₹50 crore. Beyond GSTAT, only constitutional points go to the High Court.

For a closer analysis of the appellate economics post-GSTAT, see GST Litigation in 2026: Pre-Deposit Rules, GSTAT Procedure and Strategy.

High Court writs — when and why

Article 226 of the Constitution gives every High Court the power to issue writs against authorities within its territorial jurisdiction. In GST matters, writ petitions are appropriate in narrow but important situations:

• Jurisdictional defects: SCN issued by officer lacking territorial / monetary jurisdiction.
• Natural justice violations: No personal hearing offered; reply ignored without reasoning; ex-parte orders without service.
• Constitutional challenges: Validity of a CGST provision, notification, or amendment.
• Cash-credit blocks under Rule 86A: Where ITC is blocked and statutory remedy is illusory.
• Section 67 search and seizure: Where the search is conducted without authorisation under Section 67 or where seized cash is retained beyond reasonable period (see Section 67 article).
• Refund orders ignored: Where a sanctioned refund is not paid for unreasonable periods.

The High Court is generally not the right forum for a routine merits appeal — that goes to GSTAT. Writ petitions seeking merits relief on disputed factual questions are routinely dismissed with the observation that an alternate efficacious remedy exists. The leading principle is Whirlpool Corporation v. Registrar of Trade Marks, (1998) 8 SCC 1 — alternative remedy is a self-imposed bar, not a constitutional one.

Madhya Pradesh High Court — Indore Bench practice

For taxpayers in Madhya Pradesh, the MP High Court Indore bench handles GST writs. The bench has, over recent years, been particularly active on (a) Rule 86A blocking orders without prior hearing, (b) cash seizures under Section 67, and (c) IGST refund denials for exporters. Practitioners filing at Indore should be aware of the bench's preference for tightly-focused petitions confined to a single legal point.

Section 67 — searches, summons and cash seizure

Section 67 CGST empowers the Department to conduct searches, seize goods, documents, books and "things", and summons persons to give evidence and produce documents. The provision has been the most-litigated procedural section in GST since 2018.

What can lawfully be seized

Section 67(2) authorises seizure of "goods, documents, books or things" useful for or relevant to any proceedings under the Act. The Bombay HC in a series of 2024-25 rulings, the Delhi HC, and the Madhya Pradesh HC have held that cash is not "goods" or "things" within the contemplation of Section 67(2). The seizure of cash from premises is therefore unlawful unless the cash is itself the subject-matter of the proceeding.

This has practical consequences. Search teams routinely seized cash on the spot during 2018-2023 raids; many such seizures have been reversed on writ. Where cash has been retained beyond the 60-day window prescribed by Section 67(7), taxpayers can seek mandamus for return.

Procedural safeguards

• Authorised officer must record reasons in writing before search (Section 67(2));
• Two independent witnesses must be present;
• Inventory of seized articles must be prepared and signed;
• Section 67(7): seized goods/documents must be returned within 60 days unless extended by 6 months by the Commissioner;
• Statements recorded under Section 70 are admissible but should be retracted on the same day if obtained under coercion.

For a detailed discussion, see Section 67 CGST Searches & Cash Seizure.

Refunds under Section 54 — the export and inverted-duty cases

Section 54 governs GST refunds, with significant volume in two categories: export refunds (Section 54(3)) and inverted-duty refunds (Section 54(3) read with Rule 89(5)).

Export refunds — IGST and accumulated ITC routes

Exporters can claim refund of (a) IGST paid on exports treating the export as taxable (Rule 96), or (b) accumulated unutilised ITC where exports are made under bond/LUT without payment of IGST (Section 54(3)(i)). The choice is rate-of-tax dependent — IGST route is faster but ties up more working capital; ITC route is more capital-efficient but slower to receive.

The 2-year limitation in Section 54(1) runs from "the relevant date" — for exports, the date of receipt of consideration in convertible foreign exchange. The Delhi HC ruling on ITC limitation (which addressed the question whether the 2-year limit also bars revision of ITC claims relating to that period) has been a leading authority for exporters dealing with delayed FIRC receipts.

Inverted-duty refunds

Where the GST rate on inputs is higher than on outputs (typical in textiles, agriculture, certain services), the resulting accumulation of unutilised ITC is refundable under Section 54(3)(ii). Rule 89(5) prescribes the formula. The Supreme Court in Union of India v. VKC Footsteps India Pvt Ltd, (2022) 2 SCC 603 upheld the constitutional validity of Rule 89(5) but read it down to apply only to "inputs" (excluding "input services") — a holding that materially affected service-heavy refund claims.

For deeper coverage of the export-refund landscape, see GST Refunds for Exporters.

Cost-of-litigation calculus — fight or settle

For an SME or mid-corporate, the decision to litigate a GST demand is fundamentally an economic one. The framework Accorg uses with clients:

Settlement levers include: (a) voluntary tax + interest payment before SCN under Section 73(5) eliminates penalty; (b) within 30 days of SCN under Section 73(8) eliminates penalty; (c) under Section 74(8), within 30 days of SCN, penalty caps at 25% (instead of 100%); (d) for some matters, the GST Council's amnesty schemes (where applicable for the relevant FY) may offer write-off of interest/penalty.

The candid advice we give SMEs: Litigate only when (i) the merits of your case are above 60% probability, (ii) the working-capital lock-up of 30% is sustainable, and (iii) the timeline of 30–48 months does not destroy your business. Where any of these is shaky, settlement at SCN reply stage is often the rational choice, even where the merits arguments are valid.

How Accorg Consulting handles GST litigation

Accorg's GST litigation practice is structured around three engagement profiles:

1. SCN-stage retainer

Engagement begins on receipt of an SCN. Scope: framing-defence analysis (Section 73 vs 74 challenge), evidentiary review, reply drafting, personal-hearing representation, and adjudication-order analysis. Typical duration: 3–9 months. Best for SMEs and mid-corporates with single-issue SCNs.

2. End-to-end appellate engagement

Where the adjudication order is unfavourable, scope extends to first appeal under Section 107 (with pre-deposit advisory), GSTAT appeal (with refined pleading), and potentially High Court writ if jurisdictional / constitutional points arise. Typical duration: 24–48 months. Best for matters with material-amount stakes (₹3+ crore disputed tax).

3. Pre-emptive review & defence positioning

For taxpayers anticipating an SCN (e.g. after departmental audit), Accorg conducts a preventive review of records, GSTR-2A/2B reconciliations, vendor compliance, and risk-zoned transactions. Where exposures emerge, voluntary payment under Section 73(5) is often the right move — eliminates penalty entirely if filed before SCN.

The firm's combined CA-and-legal positioning matters here. GST disputes turn on documentary discipline as much as on legal argument; a CA-led team handles ITC reconciliations and reply annexures while the legal team frames defences and represents at hearings. Accorg's Indore HQ + Mumbai office combination handles MP-based corporates with multi-state GST exposure efficiently.