Clarity on F&O - minimum 50% cash requirement in Intraday

[Prateek_Malpani]

If you dont carry overnight you will not be charged interest, but as you are not maintaining 50% cash or equivalent the brokerage will be 40 per order.
The brokerage doubling is confirmed by Zerodha in the below thread

Change in brokerage for intraday use of collateral

@Prateek_Malpani It depends on whether there is a debit balance at the time the order is executed. Orders placed when there is no debit balance will be charged 20, and orders placed while there is a debit balance will be charged 40. In your example, it would be 160, not 240.