Works contract classification turns on dominant purpose; incidental transfer of materials does not create a taxable sale.

Tax could not be levied under the Tripura Sales Tax Act on goods used in executing a works contract merely because they were purchased against C forms under the Central Sales Tax Act; any misuse of C forms may attract action under that Act, but does not by itself create a taxable sale. The contract for supply, delivery, erection and commissioning of the lighting system was held to be an indivisible works contract, because its dominant purpose was installation and commissioning and the supply of materials was only incidental. Applying the primary object and intention test, incidental transfer of materials did not convert the transaction into a sale, and the assessments were required to be reassessed after excluding the value of such materials.

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Issues: (i) Whether tax could be levied under the Tripura Sales Tax Act on the value of goods used in execution of a works contract on the ground that they were purchased at a concessional rate on the strength of C forms issued under the Central Sales Tax Act, 1956. (ii) Whether the contract for supply, delivery, erection and commissioning of the lighting system was a works contract or a composite contract for sale of materials and work.

Issue (i): Whether tax could be levied under the Tripura Sales Tax Act on the value of goods used in execution of a works contract on the ground that they were purchased at a concessional rate on the strength of C forms issued under the Central Sales Tax Act, 1956.

Analysis: The issue was covered by an earlier decision of the same Court holding that where there is no sale of the materials used in a works contract, no tax can be levied on an assumed sale merely because the goods were purchased on the strength of C forms. The Court noted that misuse of C forms, if any, may attract action under the Central Sales Tax Act, 1956, but cannot by itself create a taxable sale under the Tripura Sales Tax Act.

Conclusion: No tax could be levied on the value of such materials merely because they were purchased against C forms.

Issue (ii): Whether the contract for supply, delivery, erection and commissioning of the lighting system was a works contract or a composite contract for sale of materials and work.

Analysis: The Court examined the contract as a whole and found that its essence was the erection and commissioning of the lighting system with sub-distribution board. Supply of panels, cables and fittings was only ancillary to the dominant obligation of installation and commissioning. Applying the settled test that the primary object of the transaction and the intention of the parties determine the character of the contract, the Court held that mere transfer of property in materials during performance did not make it a sale.

Conclusion: The contract was an indivisible works contract and not a contract of sale.

Final Conclusion: The assessments could not stand because the value of materials used in execution of the contract was not exigible to sales tax, and the turnover had to be reassessed after excluding that value.

Ratio Decidendi: In determining whether a transaction is a works contract or a sale, the decisive test is the primary object of the contract and the integral character of the work undertaken; incidental use or transfer of materials does not by itself create a taxable sale.

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