You can login to Kotak Securities using the below link, once you open an account with them

Click Here to open a Trading Account with "Zerodha" through us and get FREE Training on Futures and Options Trading Strategies.
Kotak Securities does charge a little high in brokerage.

Kotak Securities Brokerage Charges
  • Delivery - Brokerage applicable both side - 0.59%
  • Intraday brokerages - 0.06% both sides (6 paisa)
  • Intraday Futures - 0.07% both sides (7 paisa)
  • Options - Brokerage applicable both side - 2.5% or minimum 100 Rs per lot

The brokerage reduces marginally, as your trade volume touches lakhs and crores, which is mostly not beneficial for a retail trader. As a retail trader, you can assume the above brokerage and trade.

Apart from the brokerage, service tax, STT, stamp duty and transaction charges are charged.

Difference between DEMAT and Trading Account