Functional integrality of machine parts defeated entry tax on Ball Mill components and invalidated the related penalty.

Grinding Media Balls and Rubber Liners fitted inside a Ball Mill were held to be integral parts of plant and machinery because the mill could not function without them and they performed the machine's essential grinding function. Applying the functional integrality test, the court treated them as constituent parts of the machinery rather than incidental goods used in manufacture, despite periodic replacement through wear and tear. As a result, entry tax was not leviable on those items, and the consequential penalty could not be sustained.

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Issues: Whether Grinding Media Balls and Rubber Liners fitted inside the Ball Mill constituted integral parts of plant and machinery or were liable to be treated as incidental goods attracting entry tax, and whether the consequential penalty could stand.

Analysis: The definition of incidental goods under Section 2(hh) of the M.P. General Sales Tax Act, 1958 excludes raw material and packing material and applies to goods used in manufacture. The controlling distinction is between goods used for carrying out manufacture, which are plant and machinery, and goods used in the manufacturing process as consumables. On the facts found, the Ball Mill could not function without the Grinding Media Balls and Rubber Liners, which performed the very grinding function of the machine and were indispensable to its operation. Their periodic replacement due to wear and tear did not change their legal character. The functional integrality test therefore required classification of these items as constituent parts of the machine, not as incidental goods. Once the levy of entry tax failed, the penalty levied under Section 17(3) of the Entry Tax Act could not survive.

Conclusion: Grinding Media Balls and Rubber Liners were not incidental goods but integral parts of plant and machinery, so no entry tax was leviable on them and the penalty also could not be sustained.

Ratio Decidendi: Where goods are indispensable constituent parts of machinery and the machinery is inoperative without them, they are to be treated as plant and machinery on the basis of functional integrality, and not as incidental goods merely because they directly participate in the process or wear out in use.

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