You may soon see instant transfer of money in your bank account if you sell a stock, unlike now when the amount is credited the next day. Similarly, if you buy a stock, it would reflect in your demat account the same day. Markets regulator Sebi is working on a mechanism for instant settlement of trades, called T+0 system (see graphic) , in the stock market, a process that would be faster than the current system of settlement one day after the day of trade (T+1), said Sebi chairperson on Monday.