How to calculate F&O Turnover

Hi,

If I am trading in gold futures throughout the year, how will I calculate the total turnover? Would be net profit or loss during the year? or would I have to take the absolute profit and losses for the different future expiry contracts I traded during the year?

Here, I wish to calculate turnover from a presumptive taxation standpoint, so that I can reduce my overall income tax liability by taking net profit or loss during the year.

Regards,
Anuj

Regards,
Anuj