Speculative vs Non-Speculative Income
Under Indian tax law, intraday equity trading (buying and selling the same stock without taking delivery) is classified as speculative business income. Futures & options trading, even though also settled without physical delivery, is specifically classified as non-speculative business income by statute.
This distinction matters because the two are taxed under the same 'income from business or profession' head but are treated as separate baskets for loss set-off purposes — a speculative loss can only be set off against speculative gains, not against non-speculative business income or other income heads.
Delivery-based equity trades (buying shares and holding them, even briefly, before selling) fall under capital gains rather than either speculative or non-speculative business income, and are taxed under a different set of rules entirely.