ShareKhan - F&O charges
Futures -
0.05% on the first leg
0.05% on the second leg if squared off on the same day and 0.05% if squared off on any other day.

Options-
Brokerage on Options trades will now be charged on the Premium component instead of the Strike Price which was levied earlier. Brokerage for all the clients will be charged as Rs. 80/- per contract or 1.5% on the premium (which ever is higher) as per the SEBI circular guidelines.