Facts of the Case

M/s J.B. Rolling Mills Limited approached the Himachal Pradesh High Court challenging a notice issued by the Central GST authority under Section 70 of the CGST Act, 2017 (and consequential action under Section 79), contending that a summons/notice dated 29.06.2022 had already been issued earlier by the State GST authority on the same subject matter, whereas the Central Authority's notice was dated 29.07.2022. The petitioner argued that once one tax administration had initiated proceedings on a matter, Section 6(2)(b) of the CGST Act barred the other administration — Central or State — from initiating parallel proceedings on the same subject matter, and sought that the impugned Central notice be kept in abeyance pending completion of the State proceedings under Section 70.

Issues Involved

  1. Whether the Central GST authority's notice/summons was barred as a 'parallel proceeding' under Section 6(2)(b) of the CGST Act, given the State authority's earlier notice on the same subject matter.
  2. How the guidelines laid down by the Supreme Court in Armour Security (India) Ltd. v. Commissioner, CGST, Delhi East on the scope of 'initiation of proceedings' and 'subject matter' under Section 6(2)(b) apply to the facts.
  3. What procedural course the parties and authorities must follow when a claim of overlapping investigation by two GST administrations is raised.

Petitioner's Arguments

  • Section 6(2)(b) of the CGST Act, 2017 barred the Central Authority from initiating proceedings on the same subject matter already taken up by the State Authority.
  • Since the State Authority's summons predated the Central Authority's notice, the Central Authority's action under Sections 70 and 79 should be barred or kept in abeyance until the State's proceedings concluded.
  • Reliance was placed on the Supreme Court's decision in Armour Security (India) Ltd. v. Commissioner, CGST, Delhi East & Anr., AIR 2025 SC 3854, as well as coordinate High Court decisions (Madhya Pradesh, Telangana and Bombay) applying similar directions.

Respondent's Arguments

  • Both the State and Central GST authorities submitted that they would abide by the statutory mandate under Section 6(2)(b) and the guidelines laid down in paragraphs 96 and 97 of Armour Security, and that appropriate inter-authority coordination would be maintained to avoid parallel adjudicatory proceedings.

Court Order / Findings

  • The Court extensively extracted paragraphs 96 and 97 of Armour Security, noting that mere issuance of summons under Section 70 does not by itself amount to 'initiation of proceedings' — that expression refers to formal commencement of adjudicatory proceedings via a show cause notice.
  • It held that legitimate investigative steps, such as summons for evidence gathering, may continue even after another authority has issued a summons, but formal adjudicatory proceedings on an identical or overlapping 'subject matter' are barred once one authority has first initiated them.
  • Applying these principles, the Court found no further adjudication was needed on the facts and issued directions consistent with the Armour Security guidelines rather than deciding the overlap question itself.
  • The petitioner was directed to appear before both the State and Central Authorities, respond to the summons/notices with supporting documents, and inform each authority of the other's parallel action; the authorities were directed to inter-communicate and coordinate to avoid duplicate adjudication, following which the case would proceed with a proper hearing.

Important Clarification

  • Mere issuance of a summons under Section 70 does not amount to 'initiation of proceedings' for the purposes of the Section 6(2)(b) bar — only the issuance of a show cause notice marks the formal commencement of adjudicatory proceedings.
  • Where a taxpayer becomes aware that two authorities (Central and State) are investigating the same subject matter, it must proactively inform the later authority in writing; the authorities are then obliged to coordinate and decide inter se who will carry the matter to its logical conclusion.
  • Any show cause notice covering a liability already the subject of an existing show cause notice on identical or overlapping facts and demand is liable to be quashed under Section 6(2)(b).

Sections Involved

  • Section 6(2)(b), CGST Act, 2017 – bars initiation of any proceedings on the same subject matter once one tax administration (Central or State) has already initiated it.
  • Section 70, CGST Act, 2017 – power to summon persons for evidence or production of documents.
  • Section 74, CGST Act, 2017 – provision under which the Central Authority's notice in this case was framed, dealing with tax evasion involving suppression.

Decision – In Favour of

The decision is a disposal with directions rather than a clear-cut win for either side; it is broadly in favour of the assessee, in that parallel adjudicatory proceedings are barred and the taxpayer is protected pending inter-authority coordination.

Case Details

Court: High Court of Himachal Pradesh at Shimla. Case No.: Civil Writ Petition No. 6563 of 2024. Coram: Hon'ble Mr. Justice Vivek Singh Thakur and Hon'ble Mr. Justice Sushil Kukreja. Reserved on: 22 September 2025. Decided on: 22 November 2025.

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