TaxTMI 
TaxTMI 
TaxTMI 
Imagine receiving three GST notices from two different cities - all for the same issue, the same transaction, and the same period. Sounds like a nightmare, right? That is exactly what happened to one of our clients, and one powerful provision in the CGST Act resolved it without a single hearing.
The Problem: Parallel GST Proceedings on ISD Credit Distribution
Our client, a company with operations across multiple states, had centralised its input service procurement. As is common with multi-location businesses, the head office was distributing Input Tax Credit (ITC) to its branches through the Input Service Distributor (ISD) mechanism under GST.
Both the Chennai and Bangalore GST offices took issue with the same ISD credit distribution. Chennai issued two separate orders, while Bangalore initiated its own proceedings - all targeting the identical transaction and the same assessment period. The client was now staring at three overlapping notices and the very real threat of contradictory outcomes.
This is not an unusual situation. Under India's dual GST structure, both Central and State authorities hold the power to levy and investigate GST matters. Without proper coordination, taxpayers often find themselves caught in parallel proceedings that drain time, money, and resources.
The Legal Shield: Section 6(2)(b) of the CGST Act
Section 6(2)(b) of the CGST Act exists precisely to prevent this kind of duplication. In simple terms, this provision states that if a proper officer under one GST authority has already initiated proceedings on a particular subject matter, no other proper officer under a different GST authority can initiate proceedings on the same subject matter.
The principle behind this section draws from the constitutional safeguard against double jeopardy under Article 20(2) and the civil law doctrine of res judicata. The intent is clear - no taxpayer should face parallel adjudication from two authorities over the same issue.
Our Strategy: A Targeted Representation
Rather than fighting on two fronts, we filed a focused representation with the Bangalore GST office. The representation made three key arguments.
First, we demonstrated that the Chennai GST office had already issued two orders on the identical ISD credit distribution issue. This established that formal proceedings were well underway in Chennai. Second, we cited Section 6(2)(b), arguing that Bangalore was legally barred from continuing its own proceedings on the same subject matter. Third, we relied on the Supreme Court's landmark ruling in M/s ARMOUR SECURITY (INDIA) LTD. Versus COMMISSIONER, CGST, DELHI EAST COMMISSIONERATE & ANR. - 2025 (8) TMI 991 - Supreme Court. In this decision, the Court held that where two proceedings involve overlapping tax liability on the same facts, the bar under Section 6(2)(b) is immediately triggered. The Court also laid down a two-fold test - both the facts and the tax liability alleged must overlap for the bar to apply.
The Outcome: Bangalore Dropped the Proceedings
The result was decisive. Bangalore withdrew its proceedings entirely. There were no follow-up notices, no prolonged hearings, and no conflicting orders to reconcile later. The client saved significant legal costs and avoided the operational disruption that comes with defending the same issue before two authorities simultaneously.
Why This Matters for Every GST Taxpayer
The Armour Security ruling has strengthened the position of taxpayers facing parallel GST proceedings considerably. The Supreme Court has now made it clear that once formal adjudicatory proceedings begin through a show cause notice from one authority, the other must step back on the same subject matter.
For businesses with multi-state operations - especially those using the ISD mechanism for credit distribution - the risk of overlapping notices is real and growing. With ISD registration becoming mandatory from 1 April 2025 for entities with multiple GSTINs under the same PAN, more companies will likely face scrutiny from different jurisdictions.
What Should You Do If You Receive Parallel GST Notices?
Do not fight both battles. Instead, check whether the subject matter, facts, and tax period overlap across the notices. If they do, invoke Section 6(2)(b) strategically. File a representation with the later authority, cite the prior proceedings clearly, and reference the Armour Security judgment to support your case.
It is cheaper, faster, and legally correct. The law already protects you - you just need to use it at the right time.