Rule 42 of CGST Act for ITC Reversal on Securities Trading by Companies: Applicability, Computation & Compliance Guide
The Goods and Services Tax (GST) framework is built on the principle that tax should ultimately burden consumption and not business. Accordingly, the law allows businesses to claim Input Tax Credit (ITC) on goods and services used in the course of taxable supplies.
However, when a company uses common inputs for both taxable supplies and non-taxable activities, the GST law restricts credit to ensure neutrality.
This restriction becomes particularly relevant for companies that undertake securities trading or hold investment portfolios alongside taxable operations.
Although transactions in securities are outside the scope of GST, the law deems them as exempt supplies for the limited purpose of ITC reversal. Consequently, Rule 42 of the CGST Rules, 2017 becomes applicable.
This article provides a comprehensive and practical explanation of Rule 42 of CGST Act for ITC reversal on securities trading by companies, covering statutory provisions, valuation rules, computational methodology, judicial guidance, and compliance best practices.
Legal Classification of Securities Under GST
Before analysing ITC reversal, it is essential to understand how GST law treats securities.
Securities Are Neither Goods Nor Services
Section 2(52) of the CGST Act excludes securities from the definition of goods.
Section 2(102) excludes securities from the definition of services.
Therefore, buying and selling shares, bonds, debentures, or mutual fund units does not constitute a supply under GST.
Meaning of Securities
Section 2(101) of the CGST Act adopts the definition in Section 2(h) of the Securities Contracts (Regulation) Act, 1956.
It covers shares, scrips, stocks, bonds, debentures, mutual fund units, and similar marketable instruments.
Interpretation
Excluding securities from supply ensures that GST does not interfere with capital market transactions.
However, this exclusion does not automatically make ITC fully available.
Why Securities Are Deemed Exempt Supplies?
Section 17(3) of the CGST Act expands the meaning of exempt supply only for ITC apportionment and specifically includes transactions in securities.
This legal fiction exists to prevent businesses from claiming full ITC on common expenses while generating large volumes of non-taxable income.
In effect:
Securities are outside GST.
Yet, for ITC reversal, they are treated as exempt supplies.
This dual character is the foundation for applying Rule 42.
Section 17(2): Restriction of ITC
Section 17(2) provides that where goods or services are used partly for taxable supplies and partly for exempt supplies, ITC shall be restricted to the portion attributable to taxable supplies.
For companies dealing in securities, this means:
If common expenses support both taxable operations and investment/trading activity, proportionate ITC must be reversed.
Valuation of Exempt Supply for Securities
Ordinarily, exempt turnover would be taken at full value. Doing so for securities would cause excessive reversals because trading volumes are typically very large.
Recognising this distortion, Rule 42 contains a specific deeming provision:
Value of exempt supply for securities = 1% of the sale value of securities
This rule significantly reduces compliance burden.
Practical Illustration
Sale value of securities during FY: ₹200 crore
Exempt turnover for Rule 42: 1% of ₹200 crore = ₹2 crore
Only ₹2 crore enters the reversal formula.
Rule 42 – Architecture of ITC Computation
Rule 42 does not apply to all ITC. It applies only to common credit.
The process can be understood in four layers.
Layer 1: Fully Eligible ITC
Inputs and services used exclusively for taxable supplies.
Examples:
GST on client advisory services
Custodian fees for taxable portfolio management
KYC charges for taxable onboarding
This ITC is fully available.
Layer 2: Fully Ineligible ITC
Inputs and services used exclusively for:
Securities trading or investment activity
Non-business purposes
Blocked credits under Section 17(5)
Such ITC must not be availed.
Layer 3: Common Credit
Expenses used for both taxable and exempt activities.
Examples:
Office rent
Audit and tax consultancy
ERP software
HR and administration
Electricity and internet
This pool is the base for Rule 42 reversal.
Layer 4: Proportionate Reversal
Reversal Amount =
(Exempt Turnover ÷ Total Turnover) × Common Credit
This calculation is done monthly and adjusted annually.
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Annual Reconciliation Requirement
Rule 42 mandates a final annual computation after the end of the financial year.
If excess ITC was reversed during the year, the company may reclaim it.
If short reversal occurred, additional reversal must be made along with interest.
This annual true-up is often missed and becomes a frequent audit objection.
Judicial and Departmental Perspective
Indian courts and authorities have consistently upheld the principle that ITC is a concession, not an absolute right, and must satisfy statutory conditions.
Key principles emerging from jurisprudence:
ITC cannot be claimed when the output is exempt.
Apportionment is mandatory where common inputs exist.
Deeming fictions under tax law must be applied strictly.
These principles support the validity of treating securities as exempt supplies for Rule 42 purposes.
Applicability Beyond Pure Trading Companies
Rule 42 exposure is not limited to investment firms.
It also applies to:
Manufacturing companies holding investments
IT companies selling ESOP shares
Startups liquidating mutual fund holdings
NBFCs earn both interest and trading income
Any sale of securities during the year activates Section 17(3).
Risk Areas Observed in Practice
No identification of common credit
Reversal computed on full turnover instead of 1%
No annual reconciliation
Reversal not disclosed in GSTR-3B
These gaps often result in demands with interest and penalties.
Compliance Best Practices
Create separate ledgers for eligible, ineligible, and common ITC
Maintain monthly Rule 42 workings
Perform annual reconciliation
Document the basis of expense classification
Review investment activity periodically
Strong documentation substantially reduces litigation risk
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Key Takeaways
Securities are outside GST but deemed exempt for ITC reversal.
Rule 42 applies when common inputs exist.
Only 1% of securities turnover is considered exempt value.
Monthly and annual computations are mandatory.
Proper structuring protects legitimate ITC.
Conclusion
Rule 42 of the CGST Act for ITC reversal on securities trading by companies is a technical but unavoidable compliance obligation.
Companies that understand the framework and implement structured processes can confidently meet regulatory expectations while preserving eligible credits.
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