Profit/loss on intra day transaction of share

depends on the kind of business he is having. if he is in the business of trading then taxable under PGBP Otherwise CG

Income from Intraday transaction can’t be regarded as investment and any income earned from intraday transaction is taxable under PGBP

Further 

- Intraday transaction in equity market is to be considered as Speculative business

- Intraday transaction in derivatives is to be considered as normal business

Thanks....