WHICH EXPENSES ARE DEDUCTIBLE FROM SHARE STCG

DEAR EXPERTS, 

I want to know that which expenses can be deducted  as exp.  from profit from shares ?

While doing share transaction various exp. like brokerage, STT, demat charges and other minor charges are applicable , i want to know that among them which charges are to be treated as expense from STCG & LTCG?

i have searched in google but many different answers were there so i am confused about it

Thanks in advance