SEBI has mandated all stock brokers to reverse the unutilized funds lying in the clients' trading accounts atleast once in a quarter or 30 days. These funds will be transferred back to your primary bank account linked with your Kotak Securities trading account. The process of transferring back the unutilized funds is called as Running account settlement or Quarterly settlement.
Recently SEBI made some changes to this process. You can refer the SEBI circular here.
Now, it has mandated all brokers to reverse the funds to the client's account in 3 days if there have been no trades done within the period of last 30 days.
For example:
Say you have Rs.50000 in your trading account on 1st November. and you do not trade for the entire month. In that case the money will be transferred back to your primary bank account by 2nd December. This is irrespective of you adding more funds to the trading account within the 30 day period.