Many brokers provide this facility to retail clients. I have long been a customer of Sharekhan as well and they also provide this facility.
As of today, if I place fund withdrawal request at 10am in the morning, I have to wait untill next day morning to reflect funds in my account received from Zerodha. ( I use HDFCBNK)
Can Zerodha provide payout option two times in a day? I am a full-time trader and although I keep contingency funds at hand, but still anything can happen and one may need his/her un-used funds during the same day for any exigency.