While this is a measure consistent with the global pattern, the increment being proposed is smaller than that enforced on global systemically important banks (G-SIBS), which is around two per cent. Of course, the context for the two categories is quite different, with failure of the G-SIBs posing a threat to the world's financial system. But, that apart, it must be accepted that the analytical foundations for both the basic capital adequacy norms and the premiums for D-SIBs and G-SIBs are tenuous. Their effectiveness can only be gauged when the system is under stress; if found wanting, they are made more stiff and, once again, only the next crisis will demonstrate the validity of the new norms. Similarly, whether a 0.8 per cent premium will be enough of a deterrent against large banks taking on system-threatening exposures only the next shock can indicate. What is far more important is the extent of scrutiny that these banks are subject to, and the expertise and diligence with which it is done. The RBI's supervisory capabilities are going to be tested by the entry of new banks, both conventional ones and the new formats - payment banks and small banks. The more stringent scrutiny of the D-SIBS will add another level of responsibility. The basic judgment that it must base its supervisory strategy on is that while prudential norms are important, foolproof supervision is perhaps even more so. Strengthening both its methodologies and its human capital is imperative.
It faces another challenge by way of government ownership of banks. Apart from the recently classified D-SIBs, a few more public sector banks will also eventually find themselves in this category. Government control has regularly been associated with mandates to lend that are not quite consistent with prudence. Further, additional capital to support such lending may have to come from an already stretched budget. How these contradictions are going to be reconciled is an important question. The bottom line is that merely imposing higher capital requirements should not lull regulators into a misplaced complacency. They are only one component of a broader regulatory approach to systemic risk.