I have income from regular salaray.I have transactions of buying and selling of shares (mostly short term).What will be the I.T. on these transactions? I heared it is 15% and nil (for long term transactions).Please let me know. Importantly,my CA has filed my return ,online, on form no ITRIV and deducted 30% tax on shor term gain.He has treated these transactions as business.Is it correct? Can we file revised return to rectify the mistake if any?If yes, what is the last date/period within which we can do this? Thanks