Kamath said despite having deep capital buffers, the ratings of multilateral banks like the BRICS-promoted NDB are affected due to the parent countries' sovereign ratings.
Citing the case of NDB itself, which is planning to get itself rated for bond-raising in many countries, he said its rating will be affected because the promoter countries are not AAA-rated.
"We need not constrain ourselves from our ability to do business...If this is the norm, I fear growth in the developing world will also be impacted," Kamath said at the BRICS Financial Forum, organised by Exim Bank, here today.
He wondered why a bank like NDB has to limit its leverage at three times its buffer despite lending to sovereigns, whereas a commercial bank can take it up to nine times despite the higher risk it takes.
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The comments follow concerns expressed by the BRICS (Brazil, Russia, India, China, South Africa) group against the working of the rating market, currently controlled by the Big Three - S&P, Fitch and Moody's - all based in the US.
This has led the five-member grouping to pursue idea of creating its own independent rating agency, which will be discussed during the two-day annual summit which started here.
Kamath said the World Bank is capital-constrained now,
Earlier this week, the Exim Bank of India too made a strong pitch for independent rating agency for the BRICS nations, saying the way the present big three are going about their job reeks of conflict of interest.
In an interview to