Non-Maintenance Of Minimum Balance: Penalty Charges Levied By Top Banks 

AMB is the minimum average of deposits required by customers in their savings bank accounts.

Banks have mandated regular saving bank account users to maintain a certain average monthly balance (AMB) in their accounts, failing which they have to bear certain penalty charges. Average Monthly Balance (AMB) is the minimum average of deposits required by the customers in their savings bank accounts. Most of the leading banks of the nation such as State Bank of India (SBI), HDFC Bank, ICICI Bank, Punjab National Bank (PNB) and Axis Bank have fixed their AMB according to the location of a customer's account in urban, metro, semi-urban and rural areas and charge customers for non-maintenance of these minimum average balance (MAB) in their savings accounts. (Also read: Transaction Charges On ATM-Cum-Debit Cards Levied By Top Banks).Please see here