A Kerala High Court ruling clarified that the Input Service Distributor (ISD) mechanism became mandatory only after the Finance Act 2024. This guide explains what the ruling means for how businesses distribute common input tax credit.

ISD Mechanism Mandatory After Finance Act 2024: Kerala HC Quashes ₹1.31 Crore GST Demand

Introduction

The Kerala High Court has delivered a significant ruling that brings much-needed clarity to the ISD Mechanism under the Goods and Services Tax (GST) regime. In the case of Intertek India Pvt. Ltd. v. Assistant Commissioner of Central Taxes and Central Excise (WP(C) No. 30075 of 2024, decided on June 8, 2026), the Court quashed a GST demand of ₹1.31 crore along with an equivalent penalty.

The judgment confirms that ISD (Input Service Distributor) registration was not mandatory before the Finance Act 2024 amendments. Instead, businesses had the flexibility to distribute common Input Tax Credit (ITC) either through the ISD Mechanism or the cross-charge method. However, with the amendments introduced by the Finance Act 2024, the legal framework has changed, making ISD registration mandatory from April 1, 2025.

This article explains the Kerala High Court’s ruling, compares the legal position before and after the Finance Act 2024, and highlights what businesses need to do to remain GST compliant.

What is the Intertek India GST Case?

Intertek India Pvt. Ltd. operates through multiple GST registrations across India. The dispute arose when services were provided by Intertek USA Inc. for the benefit of various Indian branches.

Although the invoice was issued to the Delhi unit, the Kerala unit paid the consideration, discharged GST liability under the Reverse Charge Mechanism (RCM), and later distributed the Input Tax Credit to other branches through the cross-charge method instead of obtaining ISD registration.

The GST Department argued that this approach was incorrect and claimed that the company should have obtained ISD registration before distributing the credit. Based on this interpretation, the department raised a GST demand of ₹1.31 crore and imposed an equivalent penalty.

Kerala High Court’s Decision

The Kerala High Court ruled entirely in favour of the taxpayer.

The Court observed that:

• The Kerala unit was the actual recipient of the services because it paid the consideration and discharged GST under RCM.
• The Input Tax Credit claimed by the taxpayer was legally valid.
• The unamended Section 20 of the CGST Act merely provided an enabling mechanism for ISD and did not make ISD registration compulsory.
• Parliament itself made ISD mandatory only through the Finance Act 2024, which became effective from April 1, 2025.
• The transactions were revenue-neutral and caused no loss to the Government.

Accordingly, the Court quashed the entire ₹1.31 crore GST demand and penalty.

ISD Mechanism Before Finance Act 2024

Before April 1, 2025, businesses had flexibility in distributing common Input Tax Credit.

The legal position was straightforward:

• ISD registration was optional.
• Section 20 of the CGST Act only prescribed a mechanism for distributing ITC.
• Businesses could choose between the ISD mechanism and the cross-charge method.
• Reverse Charge invoices could also be distributed through cross-charge.
• The CBIC clarification issued in July 2023 supported this interpretation.
• The 50th GST Council Meeting also clarified that taxpayers could choose either method.

This meant businesses could adopt whichever mechanism best suited their operational requirements.

What Changed Under Finance Act 2024?

The Finance Act 2024 fundamentally changed the ISD framework.

From April 1, 2025, businesses receiving common input services for multiple GST registrations must distribute Input Tax Credit only through the Input Service Distributor (ISD) mechanism.

The amendments introduced:

• Mandatory ISD registration.
• Revised definition of Input Service Distributor under Section 2(61).
• Complete substitution of Section 20 of the CGST Act.
• Mandatory inclusion of Reverse Charge invoices within the ISD framework.
• Elimination of the cross-charge option for distributing common ITC.
• Introduction of penalties for non-compliance.

This transformed ISD from an optional mechanism into a compulsory compliance requirement.

ISD Mechanism: Before vs After Finance Act 2024

Why This Kerala High Court Judgment Is Important

1. Protection for Earlier Years

The judgment confirms that taxpayers cannot be penalized for adopting the cross-charge method before April 1, 2025.

2. Clarifies Legislative Intent

Since Parliament amended the law prospectively, the Court observed that the earlier law could not be interpreted as making ISD registration mandatory.

3. Supports Bona Fide Taxpayers

The Court emphasized that where there is no tax evasion or revenue loss, procedural issues should not result in harsh penalties.

4. Clarifies RCM Transactions

For imported services received under Reverse Charge Mechanism, the taxpayer’s self-invoice forms the basis for claiming Input Tax Credit, rather than the foreign supplier’s invoice.

5. Aligns with Other Judicial Decisions

The ruling also aligns with the reasoning adopted by the Karnataka High Court in the Micro Labs matter, strengthening judicial consistency on the issue.

Practical Impact on Businesses

For Transactions Before April 1, 2025

Businesses can take comfort that:

• Cross-charge distribution remains legally valid.
• ISD registration was not compulsory.
• Past transactions cannot automatically be questioned merely because ISD registration was not obtained.
• Revenue-neutral transactions deserve liberal interpretation.

For Transactions After April 1, 2025

Businesses must now ensure:

• ISD registration is obtained wherever applicable.
• Common Input Tax Credit is distributed only through ISD.
• Reverse Charge invoices are routed through ISD.
• Cross-charge is no longer used for distributing common input service credits.
• Proper monthly documentation is maintained.

Failure to comply could result in penalties under the amended GST provisions.

GST Compliance Checklist After Finance Act 2024

Businesses operating through multiple GST registrations should:

• Obtain ISD registration.
• Identify common input services.
• Centralize vendor invoices.
• Distribute ITC only through the ISD mechanism.
• Include Reverse Charge invoices within ISD.
• Maintain complete documentation.
• Review existing GST processes to eliminate cross-charge for common services.

Key Takeaways

The Kerala High Court has made one aspect of GST law absolutely clear.

Before April 1, 2025, the ISD Mechanism was optional, and businesses were free to adopt either the ISD route or the cross-charge method for distributing common Input Tax Credit.

From April 1, 2025, the Finance Act 2024 changed the law by making ISD registration mandatory for businesses distributing common ITC among multiple GST registrations.

This judgment protects taxpayers from retrospective demands while also reminding businesses to comply with the amended law going forward.

Frequently Asked Questions (FAQs)

Is ISD registration mandatory after Finance Act 2024?

Yes. Effective from April 1, 2025, businesses distributing common Input Tax Credit among multiple GST registrations must obtain ISD registration.

Was ISD registration mandatory before April 2025?

No. Prior to April 1, 2025, businesses could distribute ITC through either the ISD mechanism or the cross-charge method.

What did the Kerala High Court decide in the Intertek case?

The Court ruled that ISD registration was not mandatory before the Finance Act 2024 amendments and quashed a GST demand of ₹1.31 crore along with the penalty.

Can businesses still use the cross-charge method?

For common input service credits distributed after April 1, 2025, businesses must use the ISD mechanism. The earlier flexibility is no longer available.

Why is this judgment important?

The ruling protects businesses against retrospective GST demands for periods before April 1, 2025, while clarifying the compliance obligations applicable after the Finance Act 2024.

Conclusion

The Kerala High Court’s ruling in the Intertek India case marks an important milestone in GST jurisprudence. It confirms that ISD registration was optional before the Finance Act 2024, providing certainty for businesses that relied on the cross-charge method during the earlier regime.

At the same time, the decision highlights the significant compliance shift introduced by the Finance Act 2024. From April 1, 2025, businesses with multiple GST registrations must adopt the Input Service Distributor (ISD) mechanism for distributing common Input Tax Credit and discontinue the use of cross-charge for such transactions.

To avoid penalties and ensure seamless GST compliance, organizations should review their existing ITC distribution practices, obtain ISD registration where required, and align their internal processes with the amended provisions of the CGST Act. Staying proactive today will help businesses avoid future disputes and maintain full compliance with the evolving GST framework.

Frequently Asked Questions

What is the ISD mechanism under GST?

An Input Service Distributor is an office that receives invoices for common input services and distributes the input tax credit to its branches under the same PAN, using ISD invoices.

What did the Kerala HC rule on ISD?

The court held that mandatory use of the ISD mechanism for distributing common ITC applies prospectively, from the changes introduced by the Finance Act 2024, not to earlier periods.

Do businesses have to use ISD now?

Following the Finance Act 2024 amendment, distributing common input-service credit through the ISD mechanism became mandatory, so multi-location businesses should register as ISD where applicable.