In its filing with the exchanges, HDFC Bank said the funds could be raised through perpetual debt instruments, Tier-II capital bonds, and through long-term infrastructure bonds.
In a media interaction, the bank's deputy managing director, Paresh Sukthankar, said the intention was to get approval for fund-raising from the board in case it was needed.
The bank's board also approved reappointment of Reserve Bank of India's former deputy governor Shyamala Gopinath as the bank's part-time non-executive chairman till June 19, 2019, at which time she would be completing 70 years, the bar set by the central bank for executive appointment.