"IDBI Bank proposes to issue an additional tier-I bond amounting to Rs 1,500 crore," it said in a BSE filing.
The bank said it will allot the bonds on August 30, 2016.
"Accordingly, the outlook on the long-term rating
continues to be negative and we are closely monitoring the bank's capitalisation profile and its efforts to raise fresh capital by March 31, 2017, which will be a key rating sensitivity," the rating agency said.
It said the bank's rating remains constrained by the continued stress on profitability and asset quality, slower pace of recovery of slipped accounts and the sharper than expected deterioration in profitability and asset quality indicators which have impacted the earnings and capitalisation profile of the bank.
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"In our opinion, the bank's earnings profile is likely to remain weak over the medium term given the high NPA generation rate, relatively elevated size of the standard restructured book and relatively high un-provided NPAs," the agency said.
The bank's asset quality has seen impairment in the last few quarters following the RBI's asset quality review (AQR) in the second half of the financial year 2015-16 and subsequently the continued slippages during the nine month of the fiscal 2016-17.
Despite the limited growth in the bank's advances, weakening asset quality has resulted in an increase in risk weighted assets and further weakening of capitalisation as reflected by CET I capital levels of 7.24 per cent as on December 31, 2016 as against 7.98 per cent as on March 31, 2016.