GSTAT Ahmedabad Valuation & Anti-Profiteering Scrutiny: Defending Rule 30/31 Cost-Plus Markups, Free-of-Cost Supplies & Section 171 Compliance
In complex manufacturing, automotive ancillaries, chemicals, and industrial engineering operations across Gujarat, GST valuation disputes represent continuous multi-crore controversy. Before the Goods and Services Tax Appellate Tribunal (GSTAT) Ahmedabad State Bench, corporate enterprises face aggressive audits challenging inter-company cost allocations under Rules 28, 30, and 31, demanding GST on Free-of-Cost (FOC) materials provided by project principals under Section 15(2)(b), and alleging profit retention under Section 171 (Anti-Profiteering).
AY 2026–27 date update (28 September 2026): CBDT extended the ordinary tax-audit report due date from 30 September to 21 October 2026, and the related audited return due date from 31 October to 21 November 2026. Separate transfer-pricing, company-law, and TDS deadlines are not changed by this announcement. Official CBDT announcement
Because corporate transactions between related parties and distinct entities (inter-branch transfers) do not reflect conventional third-party open market pricing, the Revenue routinely seeks to recalculate transaction values by imposing arbitrary cost markups or disallowing contractually agreed pricing structures. However, statutory safe harbors under the Second Proviso to Rule 28, the Supreme Court's landmark ruling in *Bhayana Builders* on FOC supplies, and constitutional jurisprudence on Section 171 provide formidable defense mechanisms.
This masterclass examines the statutory hierarchy of Rules 28 through 31, protocols for protecting corporate supply chains against arbitrary valuation enhancements, defending Free-of-Cost component supplies, and litigating anti-profiteering notices before GSTAT Ahmedabad.
1. Statutory Valuation Hierarchy: Rules 28, 30, and 31
Section 15(4) of the CGST Act prescribes that where the transaction value cannot be determined under Section 15(1)—because the supplier and recipient are related parties or distinct persons—the value shall be determined in accordance with the GST Valuation Rules.
The Strict Procedural Sequence
Rule 28 (Related Parties & Distinct Persons): Primary reliance on Open Market Value (OMV) or value of goods/services of like kind and quality.
Rule 30 (Cost-Plus Method): If value cannot be determined under Rule 28, value equals 110% of the cost of production, manufacture, or acquisition.
Rule 31 (Residual "Best Judgment" Method): Where Rule 30 is inapplicable, value is determined using reasonable means consistent with the principles and general provisions of Section 15. For services, the supplier retains the statutory right to apply Rule 31 before Rule 30.
### Strategic Inter-Company Audit & Transfer Pricing Reconciliation
To reconcile inter-branch cost allocations, Form 3CD Clause 34/38 disclosures, and related-party transaction values:
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2. Second Proviso to Rule 28: The Revenue-Neutrality Shield
The most powerful statutory defense available to multi-locational corporate groups operating across Gujarat and other states is the Second Proviso to Rule 28:
"Provided further that where the recipient is eligible for full input tax credit, the value declared in the invoice shall be deemed to be the open market value of the goods or services."
Why the Revenue Cannot Interfere with Invoice Value
In an inter-branch transfer (such as from a manufacturing plant in Sanand or Dahej to a distribution depot in Maharashtra), any tax paid by the supplying unit is credited immediately as 100% ITC by the receiving branch.
In a catena of binding decisions, appellate forums have affirmed:
Absolute Deeming Fiction: The statute does not mandate that the invoice value must approximate cost or market value. Once the recipient is eligible for full ITC, whatever value is entered on the tax invoice is statutorily deemed to be the Open Market Value.
Revenue Neutrality: There is zero loss to the public exchequer. If the Department artificially enhances the supply value, it must grant a corresponding enhancement of ITC to the receiving branch, making the entire exercise legally futile (CCE v. Coca-Cola India Pvt. Ltd.).
Executive Services & Common Corporate Overheads: Circular No. 199/11/2023-GST explicitly affirmed that for corporate office management services provided to branch offices, if the corporate office issues an invoice for any value (or zero value where no tax is charged), such declared value must be accepted without question.
3. Section 15(2)(b): Defeating GST on Free-of-Cost (FOC) Supplies
In manufacturing contracts and EPC infrastructure projects, project owners frequently supply critical raw materials, free steel, cement, or high-value capital molds Free-of-Cost (FOC) to contractors or job workers.
Assessing officers frequently attempt to add the market value of FOC goods to the contractor’s taxable turnover by misapplying Section 15(2)(b).
The Landmark Ruling: Bhayana Builders & CBIC Circular 47/21/2018
Under Section 15(2)(b), the value of supply includes:
"any amount that the supplier is liable to pay in relation to such supply but which has been incurred by the recipient of the supply and not included in the price actually paid or payable for the goods or services or both."
The foundational legal question is: Was the supplier contractually liable to pay for the materials?
*The Supreme Court Precedent in Bhayana Builders***:
In Commissioner of Central Excise v. Bhayana Builders Pvt. Ltd. [(2018) 3 SCC 782], the Supreme Court established that where the underlying commercial contract explicitly stipulates that certain raw materials will be provided free of cost by the project owner, the contractor was never contractually obligated to procure those materials. Therefore, the value of FOC materials cannot be added to the taxable service value.
CBIC Clarification:
Circular No. 47/21/2018-GST formally adopted the Bhayana Builders principle into GST jurisprudence:
When goods or services are supplied free of cost by the recipient to the contractor, the value of such items shall not be included in the value of supply, unless the obligation to provide them originally rested upon the contractor under the terms of the contract.
Before GSTAT Ahmedabad, production of the primary tender document and EPC contract establishing owner-supplied material clauses completely defeats Section 15(2)(b) additions.
4. Section 171: Defending Anti-Profiteering Allegations Post-CCI
Section 171 mandates that any reduction in GST rates or benefit of input tax credit must be passed on to the consumer by way of a commensurate reduction in prices.
The Constitutional & Procedural Battlegrounds
With the dissolution of the National Anti-Profiteering Authority (NAA) and the transfer of anti-profiteering adjudication to the Competition Commission of India (CCI), corporate manufacturers facing Section 171 notices deploy crucial legal defenses:
Absence of Statutory Formula: The CGST Act and Rules prescribe no statutory methodology or mathematical formula for calculating "profiteering." In Phillips India Ltd. and Reckitt Benckiser, the High Courts held that in the absence of codified guidelines, arbitrary cost-comparison methodologies adopted by investigative authorities violate Article 19(1)(g) of the Constitution.
Product-Level vs Entity-Level Profitability: The Revenue cannot cherry-pick individual SKUs that saw price increases due to global commodity inflation while ignoring product lines where prices were slashed far beyond the tax reduction.
Cost Inflation Defense: Demonstrating that input price increases (raw materials, freight, labor) absorbed the nominal tax benefit between rate transition dates.
5. Corporate Boardroom Checklist: Valuation Defense Protocols
For enterprise finance directors and tax heads operating in Gujarat's manufacturing sectors:
Document Second Proviso Applicability: In all distinct person invoices, maintain verified confirmation that the receiving unit is registered, operational, and utilizes 100% ITC without exempt output supplies.
Review EPC & Job-Work Master Agreements: Ensure every supply contract explicitly details owner-supplied FOC materials to foreclose Section 15(2)(b) deemed valuation additions.
Establish Rule 30 Cost Accounting Audit Trails: Where Rule 30 cost-plus 110% valuation is invoked, maintain certified Cost Accountant valuation certificates calculating CAS-4 production costs.
Preserve Section 171 Cost Build-Up Schedules: Maintain contemporaneous records of pre-rate-cut and post-rate-cut pricing, documenting raw material price spikes to counter arbitrary anti-profiteering calculations.
### Comprehensive Indirect Tax Controversy Practice
Defend multi-state corporate supply chains, related-party pricing, and EPC contracts against aggressive GST valuation enhancements:
Equip your finance team with statutory disclosure schedules, CARO 2020 reconciliation sheets, and audit checklists.
Senior Appellate Tax Counsel in Ahmedabad
PGT & Associates represents manufacturing conglomerates, multi-locational industrial groups, EPC contractors, and automotive ancillaries across high-stakes valuation disputes, FOC supply litigation, and appellate proceedings before the Goods and Services Tax Appellate Tribunal (GSTAT) Ahmedabad State Bench, the Gujarat High Court, and the CCI.
Chambers: 308-309, Sahajanand Palace, 100 Feet Anand Nagar Rd, Ahmedabad, Gujarat 380015
Direct Consultations: pradeep@pgtandassociates.com | +91 99250 12055
Appellate Benches: GSTAT Ahmedabad | ITAT Ahmedabad | NCLT Ahmedabad | Gujarat High Court
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