State Bank of India has reportedly made it compulsory for account holders to maintain a minimum balance. SBI also announced penalty for not keeping a minimum balance in accounts. SBI made maintenance of Rs. 5,000 mandatory for accounts in metropolitan areas, Rs. 3,000 in urban areas, Rs. 2,000 in semi-urban areas and Rs. 1,000 in rural areas. The bank will be charging the penalty from April 1 onwards.