CDM charge in SBI stands for Cash Deposit Machine service charge. It is a fee charged by the bank for using the Cash Deposit Machine to deposit money into your account. The CDM is an ATM-like device that allows you to deposit cash directly into your account using your account number or an ATM or debit card. The service charge for cash deposits through CDMs/State Bank Cash Points varies from bank to bank. For instance, SBI charges around Rs. 25 as the CDM charge. However, if you deposit cash using a debit card at the CDM, there is no cost, and the transaction is free. The CDM charge is deducted from your account on successful deposit. The benefits of using a CDM include instantaneous bank account credit, avoiding long queues, and filling out forms, and getting a receipt for your deposit right away.