Hi, for option buying, your own capital will be used, as it will appear as a debit bill in the ledger.
For futures positions, if your pledged amount includes cash components, it will be used first to maintain the required 50:50 margin. In case of a loss, your ledger will be debited and adjusted against your own capital. If the required margin is not maintained, the ledger will go negative, and an auto square-off will occur within T+5 working days.
You can read more about “Margins & Availability of Additional Cash for Withdrawals on Dhan” here.
To learn more about cash and non-cash component scrips, please click here.