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FY 2025-26 · AY 2026-27
Updated October 2026

Comprehensive Guide to ITC Rules for Input Service DistributorsUnderstanding the Distribution of Input Tax Credit under GST

Explore the detailed rules and conditions for Input Service Distributors under GST for FY 2025-26. Learn about distribution methods, compliance requirements, and more.

Table of Contents
1

Who is an Input Service Distributor?


2

Conditions to be Complied by ISD


3

Manner of Distribution of ITC by ISD


4

Amount of Distribution of ITC by ISD


5

Implication of Issuing Debit/Credit Notes


6

Recovery of Excess Credit Distributed


7

Illustration on Input Service Distributor


8

FAQs on ITC Rules for ISD

Who is an Input Service Distributor?

  1. Definition and Role

    An Input Service Distributor (ISD) is an office that receives tax invoices for input services and distributes the input tax credit to its units.

    • ISD is defined under Section 2(61) of the CGST Act.

    • Distributes CGST, SGST/UTGST, or IGST to units with the same PAN.

    • Must register separately as an ISD even if registered as a normal taxpayer.

  2. Registration Requirements

    ISD must comply with specific registration requirements under GST.

    • Separate registration required under GST using Form REG-01.

    • Multiple registrations allowed for different offices of a company.

    • Registration is mandatory from 1st April, 2025.

Conditions to be Complied by ISD

  1. General Conditions

    ISD must adhere to certain conditions for distributing ITC.

    • ITC must be distributed in the same month it is available.

    • Cannot distribute credit exceeding available ITC.

    • Separate distribution for CGST, SGST/UTGST, and IGST.

  2. Reverse Charge Mechanism

    Handling of reverse charge mechanism by ISD.

    • ISD cannot accept invoices under reverse charge until 1st April, 2025.

    • From 1st April, 2025, ISD can distribute ITC on reverse charge services.

    • Recipient must discharge tax liability before claiming ITC.

Manner of Distribution of ITC by ISD

  1. Distribution Formula

    The manner of ITC distribution is governed by Rule 39 of the CGST Rules.

    • ITC is distributed proportionately to units based on turnover.

    • Separate calculation for CGST, SGST/UTGST, and IGST.

    • Units must have the same PAN for distribution.

  2. Documentation and Compliance

    ISD must maintain proper documentation for ITC distribution.

    • Issue ISD invoice for ITC distribution.

    • Maintain records of distributed ITC in GSTR-06.

    • Invoices must include ISD and recipient details.

Amount of Distribution of ITC by ISD

  1. Calculation of ITC Amount

    The amount of ITC distributed is calculated based on specific criteria.

    • ITC is distributed based on the turnover ratio of each unit.

    • Ensure no excess distribution beyond available ITC.

    • Adjustments for ineligible credits must be made.

  2. Worked Example

    Example of ITC distribution calculation.

    • Unit A turnover: ₹50 lakh, Unit B turnover: ₹30 lakh.

    • Total ITC available: ₹1 lakh.

    • Distribution: Unit A receives ₹62,500, Unit B receives ₹37,500.

Implication of Issuing Debit/Credit Notes

  1. Impact on ITC Distribution

    Debit and credit notes affect the distribution of ITC.

    • Debit notes increase the ITC available for distribution.

    • Credit notes reduce the ITC available for distribution.

    • Adjustments must be reflected in GSTR-06.

  2. Documentation Requirements

    Proper documentation is required for debit and credit notes.

    • Issue ISD credit note for reduced ITC.

    • Maintain records of all debit and credit notes.

    • Ensure compliance with GST invoicing rules.

Recovery of Excess Credit Distributed

  1. Procedure for Recovery

    Steps to recover excess ITC distributed by ISD.

    • Identify excess credit distributed to units.

    • Initiate recovery process through GSTR-06.

    • Adjust future ITC distributions to correct excess.

  2. Legal Implications

    Consequences of excess ITC distribution.

    • Interest may be levied on excess credit distributed.

    • Penalties may apply for non-compliance.

    • Ensure timely correction to avoid legal issues.

Illustration on Input Service Distributor

  1. Example 1

    Illustration of ITC distribution for multiple units.

    • Company X has three units: A, B, and C.

    • Total ITC available: ₹2 lakh.

    • Distribution based on turnover: Unit A ₹1 lakh, Unit B ₹60,000, Unit C ₹40,000.

  2. Example 2

    Handling of debit and credit notes in ITC distribution.

    • Unit A receives a credit note reducing ITC by ₹10,000.

    • Adjusted ITC for Unit A: ₹90,000.

    • Reflect changes in GSTR-06 filing.

FAQs on ITC Rules for ISD

What is the role of an Input Service Distributor?

An Input Service Distributor (ISD) is responsible for receiving tax invoices for input services and distributing the input tax credit to its units based on their turnover. This ensures that each unit receives the appropriate share of ITC.


How is ITC distributed among units?

ITC is distributed among units based on their respective turnover ratios. The distribution must be done separately for CGST, SGST/UTGST, and IGST, ensuring no excess distribution beyond the available ITC.


Can an ISD distribute ITC on reverse charge services?

From 1st April, 2025, an ISD can distribute ITC on services where GST is paid under reverse charge. However, the recipient must first discharge the tax liability before claiming ITC.


What are the documentation requirements for ISD?

ISD must issue an ISD invoice for ITC distribution, maintain records of distributed ITC in GSTR-06, and ensure all invoices include the necessary details such as ISD and recipient information.


How are debit and credit notes handled by ISD?

Debit notes increase the ITC available for distribution, while credit notes reduce it. ISD must issue ISD credit notes for reduced ITC and reflect these changes in their GSTR-06 filings.


What happens if excess ITC is distributed?

If excess ITC is distributed, the ISD must initiate a recovery process through GSTR-06 and adjust future ITC distributions. Interest and penalties may apply for non-compliance.


Is separate registration required for ISD?

Yes, separate registration as an ISD is mandatory under GST, even if the entity is already registered as a normal taxpayer. This can be done using Form REG-01.


Can a company have multiple ISD registrations?

Yes, a company can have multiple ISD registrations for different offices, allowing each office to distribute ITC independently based on their specific input services.

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