How much is the short margin penalty charged by NSE for derivative positions?

Thanks but my question little different …

I understand we can not withdraw but when they do early payin - 80% credit should be added to margin statement on the T day (same day) and 20% on T+1 day …if so our margin statement will have higher available cash margin in the daily margin statement which may avoid negative balance.

If they don’t than only on T+2 when actually proceeds become withdrawable than only they will add to available cash margin in daily margin statement?

Please refer to your link and check @Nakul said early payin does not work sometimes