You’re getting confused. There are 2 kinds of payout:
(a) Regular payout (RP): RP will allow you to withdraw any or all the money in your account. Regular payouts will be processed after we’ve processed our trades and have posted the obligations on your ledger. RP will be processed via NEFT. Regardless of when you place the request, it’ll be processed only after the trade process is done which is around 9 or 9.30 in the evening. Once the payout is processed, the funds will hit your bank account subsequently. If NEFT is made 24X7, you’ll receive the credit at 11.00 pm or 12.00 am instead of receiving it the next day.
HDFC’s corporate banking portal is ENET. FYI, here’s a confirmation email from our bank confirming that 24X7 NEFT isn’t available yet.
(b) Instant Payout (IP): IP will be processed via IMPS, you’ll be allowed to withdraw a portion of your funds (with an upper cap) instantly. When you place an IP in the midnight, the funds should hit your bank account in a few minutes, subject to you having sufficient balance. This, is WIP and will be announced soon.