"Besides its adverse impact on banks' balance-sheets, high leverage of corporates may hinder the transmission of monetary policy impulses as corporates may not be in a position to benefit from falling interest rates due to their high levels of debt," the half-yearly Financial Stability Report published by RBI said.
The report noted that corporates are not able to take benefits of lower interest rates, which banks are offering, as they are already indebted.
The report said concerns remain around corporate sector leverage, especially in the context of its ability to service debt. "While leverage has increased, the ability to repay debt and debt servicing ability of the corporates has declined," the FSR said.
As per the report, gross non-performing advances (GNPAs) rose to 4.6 per cent from 4.5 per cent between September 2014 and March 2015.
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The restructured standard advances during the period also increased, pushing up the banks' stressed advances to 11.1 per cent from 10.7 per cent.
However, net non-performing advances (NNPAs) for all banks remained unchanged at 2.5 per cent during September 2014 and March 2015.
The report said five sub-sectors-- mining, iron & steel, textiles, infrastructure and aviation --constituted 24.8 per cent of the total advances of banks, while this is a whopping 51.1 per cent of the total stressed loans.
"Among these five sectors, infrastructure and iron & steel had a significant contribution in total NPAs accounting for nearly 40 per cent of the total," the report said.
However, if the macroeconomic conditions deteriorate, gross NPAs may increase further and it could rise to around 5.9 per cent by March 2016 under a severe stress scenario.
"Under such a scenario, the system level CRAR of banks could decline to 11.5 per cent by March 2016 from 12.9 per cent as of March 2015," the report said.