### Fabricated steel superstructure is an unspecified commodity taxable at the higher rate in works contracts. Overview: Ircon International Ltd. challenged a reassessment order under the Bihar Value Added Tax Act, 2005, for the period 2014-15. The petitioner, engaged in a rail-cum-road bridge project, argued that structural steel used in the project should be taxed as "declared goods" (Section 14 of the CST Act) at 5% and that payments to sub-contractors for fabrication should be deductible. Key Legal Issues: 1. Classification of Goods: Whether fabricated "triangulated steel girders" retain the character of "iron and steel" or transform into a distinct, unspecified commodity. 2. Taxable Event & Valuation: Determining the point of incorporation in a works contract and whether fabrication/transportation costs form part of the taxable value. 3. Jurisdiction under Section 31: Whether the authority could invoke reassessment powers without a "change of opinion" bar. Court’s Observations: * Transformation & Marketability: The Court applied the "twin tests" from *Quippo Energy Ltd.*, ruling that raw structural steel underwent a fundamental change through fabrication to become a bridge superstructure. This transformation created a commercially distinct commodity with a different functional utility. * Taxable Value: Relying on *Gannon Dunkerley*, the Court held that since the property in goods passes only at the time of incorporation into the work, the measure of tax is the value of the goods at that specific moment. Consequently, costs incurred to bring the goods to their final form (fabrication, transportation, and erection) prior to incorporation are not deductible. * Consistency vs. Res Judicata: The Court clarified that principles of *res judicata* do not strictly apply to tax proceedings. The fact that the Department taxed the petitioner at 4-5% in previous years did not prevent a correct reassessment if the fundamental legal classification was never specifically adjudicated. * Sub-Contractor Turnover: The Court distinguished *Larsen & Toubro (2008)*, noting that the assessing officer did not improperly add the sub-contractor’s turnover but rather correctly valued the final fabricated structure transferred by the main contractor. Conclusion: The High Court dismissed the writ petitions, upholding the assessment at 13.5% (as unspecified goods) and affirming that fabrication and launching costs are part of the taxable value of the processed goods in a works contract.

The Petitioner, a Public Limited Company, was awarded a works contract by the East Central Railways for the construction of a rail-cum-road bridge across the river Ganga.

The contract involved supply of structural steel (Schedule C-III), fabrication, and erection.

The Petitioner filed returns for the period 2014-15, claiming a 5% tax rate on "iron and steel" under the Bihar Value Added Tax (BVAT) Act, 2005, and sought deductions for labour and sub-contractor charges.

The Respondent No. 2 (Assessing Authority) issued a notice under Section 31 of the BVAT Act for reassessment.

The Respondent held that since structural steel was fabricated into "steel structures/triangulated girders," it became a commercially distinct, unspecified commodity taxable at 13.5% rather than the 5% rate applicable to declared goods under Section 14 of the Central Sales Tax (CST) Act.

Whether the sale of "steel superstructure/triangulated steel girders" involved in the works contract qualifies as "iron and steel" under Section 14(iv) of the CST Act, attracting a 5% tax rate, or as an unspecified commodity taxable at 13.5%?

Whether the disallowance of deductions worth Rs. 1,72,15,39,774/- (pertaining to fabrication, transportation, and erection) was legally justified?

Whether the reassessment under Section 31 of the BVAT Act was validly initiated without a "change of opinion"?

The court primarily applied Section 14 and 15 of the Central Sales Tax Act, 1956, which declare certain goods of "special importance" and limit state taxation on them.

It relied on Article 366(29-A)(b) of the Constitution regarding the "deemed sale" of goods in works contracts.

Key precedents included *Gannon Dunkerley & Co. v. State of Rajasthan (1993)*, which established that the taxable event is the transfer of property at the time of incorporation and the measure of tax is the value of goods at that stage.

*B. Narasamma v. Dy. Commissioner (2016)*, which clarified that while declared goods remain subject to the CST rate limit, they must retain their commercial identity to benefit from it.

The "transformation and marketability" tests from *Quippo Energy Ltd. v. Commissioner of Central Excise (2025)* were applied to determine if a new commodity emerged.

The Court reasoned that under the works contract, the Petitioner did not merely transfer raw structural steel; rather, the steel underwent significant "fabrication" into "triangulated girders" in specialized workshops.

Applying the transformation test, the Court found that the process created a new commercial entity with a distinct name, character, and functional utility (bridge superstructure).

Consequently, the identity of the original "iron and steel" (as defined in Section 14 of the CST Act) was lost, making the final product an "unspecified good" under Section 14(1)(d) of the BVAT Act, taxable at 13.5%.

Regarding deductions, the Court held that expenses incurred prior to the transfer of property—such as fabrication and transportation to the site—form part of the "value of the goods" at the time of incorporation into the bridge and cannot be excluded as pure labour charges.

The Court also dismissed the "res judicata" argument, stating that tax assessments for each year are independent and the specific classification of the girders hadn't been adjudicated in previous years.

The disallowance of Rs. 1,72,15,39,774/- in deductions was upheld as these costs were embedded in the value of the fabricated goods at the time of transfer.

The writ applications were dismissed, and the impugned assessment order and demand notices were sustained.