Functional integral component test governed classification of mobile crane wire ropes as part of mobile cranes, not separate goods.

Mobile crane wire ropes were held to be an integral part of mobile cranes for classification under the Rajasthan Value Added Tax Act, 2003. The Court applied the functional test that a component is part of the principal article only when the article is commercially incomplete without it, whereas an accessory merely adds convenience or effectiveness. On the facts, the wire ropes were mainly used in mobile cranes and were necessary for their ordinary functioning, so they were not treated as a separate taxable commodity. The Revenue's challenge failed, and the classification attracting the rate applicable to mobile cranes under Schedule IV was sustained.

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Issues: Whether mobile crane wire ropes are to be treated as part of mobile cranes and taxed at the rate applicable to mobile cranes under Schedule IV of the Rajasthan Value Added Tax Act, 2003, or as a distinct commodity taxable under Schedule V.

Analysis: The dispute turned on whether the wire ropes were merely separate goods capable of diverse use or whether, in commercial and functional sense, they formed an integral component of mobile cranes. The Court applied the principle that a thing is a part of another only if the principal article is incomplete without it, whereas an accessory merely adds convenience or effectiveness. On the facts, the wire ropes were found to be used mainly in mobile cranes and to be necessary for their functioning in the ordinary course, even if they might occasionally be used elsewhere. The commodity was therefore treated not as a separate item but as part of the mobile crane.

Conclusion: Mobile crane wire ropes are an integral part of mobile cranes and attract the same rate of tax as the mobile cranes under Schedule IV; the Revenue's challenge failed.

Final Conclusion: The petitions were rejected, and the assessment/classification adopted in favour of the assessee was sustained.

Ratio Decidendi: A commodity is classifiable as part of another article when it is functionally integral to that article and the principal article is commercially incomplete without it; occasional alternative use does not by itself make it a separate taxable commodity.

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