The impact of intraday trading on your trading account will be the same as in the case of other delivery trades. Only thing is that here you do not take delivery but the profit or loss on the trade gets adjusted to your trading account. If your losses become too much in intraday trading then your broker will ask you to bring in additional margins. The trading account records your purchases and sales on all the day trades and the net effect after brokerage and statutory charges are either credited or debited to your account depending on whether it is a profit or a loss on that day.
As stated in the previous paragraph, the net position at the end of the day is zero in intraday trading. As a result, there is no question of any shares going into or going out of your demat account. Intraday trading has no impact on your demat account. For example, you can buy shares by just paying a margin and you can also sell shares that you do not own. Intraday trading does not result in delivery of shares as the net position at the end of the day is zero. If an investor buys 1000 of SBI in the morning at Rs.260 and sells 1000 shares in the afternoon at Rs.266, then the profit of Rs.6,000 (adjusted for charges) will be credited to your trading account.