DP charges are levied when a customer sells the shares from demat account. It is charge to be paid to the Depositories and Depository participants. In new Prime on selling a share from demat account, there will be a DP charges of Rs 20 on every debit instruction. This is inclusive of the NSDL or CDSL charges. This will be debited from the linked bank account whenever there is a sell transaction. E.g If customer has Tata Motors share in his demat and he sells the same. A flat Rs 20 would be levied irrespective of the trade value. In case the customer is selling Tata motors multiple times during the day, there will only be a single debit instruction and only Rs 20 will be charged. On other hand if the customer sells 2 different stocks of different companies on same day, then there will be 2 debit instructions and Rs 20*2 = Rs 40 will be levied.