In a relief to small-size firms, the Reserve Bank of India (RBI) on Friday relaxed rules for opening current accounts with the banking system’s exposure of less than Rs 5 crore. The RBI asked banks to take an undertaking from borrowers that they will inform lenders when the credit facilities availed reaches Rs 5 crore or more. The rules have been tweaked based on feedback received from Indian Banks’ Association (IBA) and other stakeholders, the RBI said. Borrowers with banking system’s exposure of Rs 5 crore or more can maintain current accounts with any one of the banks with which it has CC/OD facility. Such banks must have at least 10 per cent of the exposure of the banking system to that borrower.Further, other lending banks may open only collection accounts, the RBI said. This can be done on condition that funds deposited in such accounts are remitted within two working days of receiving these to the CC/OD account. The bank having the highest exposure may open current account