Same business test requires substantive unity; without interdependence speculative losses cannot be set off against trading profits.

Whether speculative transactions and a cloth trading business constituted the "same business" under Section 24(2) turned on factual unity: the court applied a test of substantive unity or nexus-real inter-connection, interlacing or inter-dependence-so one activity cannot be stopped without affecting the other. Factors such as common books, place, staff, capital or incidental intermingling are relevant but not individually decisive. The Tribunal's factual finding of no substantial inter-connection was supported by evidence, so the losses from speculation could not be set off against cloth trading profits.

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Issues: Whether the speculation business carried on by the assessee and the cloth trading business conducted in the name of Dayabhai Sobharam constituted "the same business" within the meaning of Section 24(2) of the Income-tax Act, thereby permitting set-off of earlier speculative losses against profits of the cloth business.

Analysis: The enquiry is largely factual and turns on whether there is real unity, inter-connection, inter-lacing or inter-dependence between the two lines of activity. Relevant factors include common books of account, common place of business, common staff, common capital source, intermingling of receipts and overheads, and whether cessation of one activity would affect the framework of the other. These factors must be considered collectively and in context; none is individually decisive. Where the proved facts show that the two activities are diverse in nature and one can be discontinued without affecting the other, unity is absent. The Tribunal's finding that there was no substantial inter-connection or unity between the cloth trading and speculative activities was supported by evidence and lawful inferences from the facts.

Conclusion: The speculation business and the cloth business were not the same business under Section 24(2) of the Income-tax Act; there was evidence to justify the Tribunal's finding that they were separate businesses; consequently the assessee was not entitled to set off the brought-forward speculation losses against the cloth business profits.

Ratio Decidendi: For the purposes of Section 24(2) of the Income-tax Act, two lines of activity constitute the "same business" only where there is a substantive unity or nexus-real inter-connection, interlacing or inter-dependence-so that one activity cannot be stopped without affecting the framework of the other; mere common books, place, staff, capital source or incidental financial intermixture, without such substantive unity, do not make them the same business.

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