This discussion clarifies how to report share trading turnover, particularly for futures and options, in an Income Tax Return (ITR-3). The consensus is that F&O trading is considered business income and should be reported under the 'Sales' figure in the trading account within Schedule BP. While the exact calculation of 'purchase' can be complex and may differ from the standard definition, the key is to ensure the net profit is accurately reflected. For instance, if you have a profit of £10,000 and a loss of £5,000, your turnover is £15,000, and the profit of £5,000 needs to be accounted for, potentially by adjusting 'other expenses'.