Rule 86A After K-9 Enterprises: The Judicial Consolidation That Reshaped ITC Blocking Under GST
Introduction: The Structural Problem With Rule 86A
When Rule 86A of the Central Goods and Services Tax Rules, 2017 was introduced via Notification No. 75/2019-Central Tax on 26 December 2019, it was framed as a targeted anti-fraud measure. On paper, it authorised a Commissioner or an authorised officer not below the rank of Assistant Commissioner to "disallow debit" from the electronic credit ledger (ECL) — effectively freezing Input Tax Credit (ITC) — upon forming "reasons to believe" that the credit had been fraudulently availed or was otherwise ineligible.
In practice, however, Rule 86A evolved into something far more consequential. With no express hearing requirement, no mandated evidentiary threshold, and no prescribed form for communicating the blocking order, it became — across the five years following its insertion — a parallel recovery mechanism that bypassed the structured adjudication framework under Sections 73 and 74 of the CGST Act, 2017. Orders were communicated through brief portal alerts or SMS messages. Assessees had no formal pre-action remedy. ITC running into thousands of crores remained frozen at any given time.
The asymmetry between Rule 86A and the Section 73/74 framework was glaring: the latter mandates a show-cause notice, a hearing, a speaking order, and a full appellate chain, while the former historically offered none of these protections.
On 16 May 2025, the Supreme Court delivered a decisive intervention. By dismissing the Revenue's Special Leave Petition in State of Karnataka v. K-9 Enterprises [2025] 174 taxmann.com 701 (SC), the apex court effectively endorsed the Karnataka High Court's procedural framework governing Rule 86A. When read alongside the Delhi High Court's ruling in Best Crop Science Pvt. Ltd. v. Principal Commissioner (2024 TIOL 1625 HC DEL GST) and a growing body of subsequent High Court decisions, a three-pillar doctrinal architecture has emerged — one that permanently changes how Rule 86A can be lawfully exercised.
The Statutory Foundation: What Rule 86A Actually Says
Rule 86A, inserted into the CGST Rules, 2017, authorises blocking of ITC on any of four grounds:
- Credit availed without a valid invoice or where the corresponding tax has not been deposited with the Government
- Credit availed from a supplier who does not actually exist
- Credit availed by a registered person who does not actually exist
- Credit availed without actual receipt of goods or services
Under Rule 86A(3), any such block carries a maximum duration of one year — a built-in sunset clause. The CBIC issued administrative guidance via Circular No. 20/16/05/2021-GST dated 2 November 2021, requiring reasons to be recorded in writing and the power to be applied proportionately.
Despite this guidance, the early enforcement phase was characterised by automated, system-level blocks, frequently triggered by intelligence inputs from enforcement agencies. The blocking assessee typically received no prior notice, no reasoned order, and no formal avenue for immediate rebuttal — other than filing a writ petition before the High Court.
The Three-Pillar Architecture of the K-9 Enterprises Doctrine
The judicial response to these enforcement excesses has crystallised into a three-pillar framework. Each pillar addresses a distinct category of procedural or substantive infirmity in the exercise of Rule 86A.
Pillar One: Mandatory Pre-Decisional Hearing
The most foundational pillar concerns the timing of the hearing — specifically, the requirement that the assessee be heard before the ECL is blocked, not after.
The Karnataka High Court's Division Bench in K-9 Enterprises v. State of Karnataka (WA 100425/2023) held that notwithstanding the absence of any express hearing provision in Rule 86A, the principles of natural justice necessarily apply where the proposed action carries "significant civil consequences." A post-decisional hearing, the Court reasoned, cannot serve as an adequate substitute in circumstances where the blocking itself causes immediate and irreparable commercial harm.
The Supreme Court in [2025] 174 taxmann.com 701 (SC) dismissed the Revenue's challenge to this reasoning, thereby lending the highest judicial authority to the pre-decisional hearing requirement.
The cascade of subsequent rulings applying this principle has been consistent and widespread:
- Safan Fasteners v. Assistant Commissioner (WP No. 9359/2025, decided 8 April 2025) — block quashed for absence of pre-blocking hearing
- Travacore Minerals v. State of Karnataka (WP No. 26693 of 2024) — same principle applied
- S.A. Enterprises v. Assistant Commissioner of Central Tax (WP No. 27868 of 2025, decided 17 October 2025) — block communicated via text message quashed
- M/s A G Automotive v. State of Karnataka (WP No. 11453 of 2025) — block set aside; Rule 86A described as "drastic and draconian in nature"
The Bombay High Court in Rithwik Projects Private Limited v. Union of India (2025) took an adapted approach — holding that where pre-decisional hearing has not occurred, a timely post-decisional hearing with recorded reasons and an option of a bank guarantee substitute may in limited circumstances suffice. This represents a practical accommodation while preserving the essential principle.