Sales tax classification of tractor-trailers: not machinery and not an accessory, so the higher levy failed.

A tractor-trailer does not qualify as "machinery" for sales tax classification because machinery, in common legal parlance, must be a mechanically integrated contrivance with interrelated parts working together to perform work or produce a definite result; a trailer that merely moves when attached to a tractor does not meet that test. It is also not an "accessory" of a tractor, since an accessory must add to the principal machine's beauty, convenience, or effectiveness, and a load-carrying trailer does not do so. On that basis, the higher levy under item 20 of the Second Schedule could not be sustained, and the original treatment of tractor-trailers as non-scheduled goods was restored.

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Issues: (i) Whether a tractor-trailer is a machinery for the purpose of levy of sales tax under item 20 of the Second Schedule to the Karnataka Sales Tax Act, 1957; (ii) Whether a tractor-trailer is an accessory of a tractor and therefore taxable under item 20 of the Second Schedule to the Karnataka Sales Tax Act, 1957.

Issue (i): Whether a tractor-trailer is a machinery for the purpose of levy of sales tax under item 20 of the Second Schedule to the Karnataka Sales Tax Act, 1957.

Analysis: The expression "machinery" was examined in its ordinary sense with reference to established tests: it denotes a mechanical contrivance consisting of interrelated parts functioning together to perform work, multiply or apply force, or produce a definite result. Mere movement by being dragged, or being a receptacle mounted on wheels, does not satisfy that test. Applying those principles, the trailer did not have a system of parts performing work in coordinated action and only moved when attached to a tractor.

Conclusion: A tractor-trailer is not a machinery.

Issue (ii): Whether a tractor-trailer is an accessory of a tractor and therefore taxable under item 20 of the Second Schedule to the Karnataka Sales Tax Act, 1957.

Analysis: An accessory is something not essential in itself but which adds to the beauty, convenience, or effectiveness of the principal thing. The trailer was used only to carry load when dragged by the tractor and was not fitted to improve the tractor's beauty, convenience, or effective functioning. A necessary implement or item for a particular use is not, for that reason alone, an accessory.

Conclusion: A tractor-trailer is not an accessory of a tractor.

Final Conclusion: The levy at the higher rate under item 20 of the Second Schedule could not be sustained, and the original assessment treating tractor-trailers as non-scheduled goods was restored.

Ratio Decidendi: For tax classification under a schedule entry using the words "machinery" or "accessory," the article must, in common legal parlance, be a mechanically integrated contrivance performing work as a unit or an item that adds to the principal machine's convenience or effectiveness; a trailer that merely follows and carries load does not answer either description.

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