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Brought 100 share at 150₹ buy price and sold them at 200₹. Holding period is 50 days.
other charges=Brokerage+Exchange+Stamp duty + Service tax //That means all charges other than STT charges
STCG = [(No of share) * Sell price - (other charges at sell time)] - [(No of share) * buy price + (other charges at buy time)]
Assume:
(other charges at sell time) = 25
(other charges at buy time) = 35
As per income tax notification, once you declare as trader and consider it as business income - you need to continue the same as well for future years.