There is a fee that is charged by the depository participant during dematerialization or rematerialization. This cost can vary from Rs5 to dematerialize certificates whereas rematerialization of certificates cost Rs25 per certificate.
The basic demat account with holdings up to a balance of INR50000 doesn’t incur any charges. Accounts with holding between INR50000-200000 can charge somewhere between INR100 to INR750 which completely depends on the number of transactions made in a year. Similarly if the total balance of holdings are above INR 2lakhs then the maintenance charge may go up to INR2000 to INR2500.