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R Gresser's avatar

Hello Brian

I very much enjoyed your thoughts on Barr’s roadmap for reforming capital requirements of US banks in light of recent events.

The statement “Higher Capital Buffers Reduce the Probability of Failure” has general agreement but, there are severe limitations to the effectiveness of this broad brush regulatory constraint. (And full disclosure I speak as a former regulatory lead on developing such rules) For example, the point of non-viability once reached cannot be turned back by any amount of solvency buffer, no matter how large.

Arguably there is a point of diminishing effectiveness for ever larger broadly measured capital buffers given they are not sufficiently targeted to the sources of problems/threats to bank viability (e.g. cumulative effects of bad credit underwriting or reckless maturity transformation). Perhaps this is why in Canada we chose to directly address the risk to the banking system of over leverage in residential mortgage markets by directly addressing minimum standards for the quality of underwriting what is a commoditized product, and lately, returned to specific capital charges on residential mortgages that are negatively amortizing (https://www.osfi-bsif.gc.ca/Eng/fi-if/in-ai/Pages/20230711-let.aspx) rather than relying solely on broad based capital “buffers”.

Finally, while I concur with your assessment of the origins and “calibration” of the operational risk charge, perhaps this too is one risk where applying a capital charge that is essentially a “plug” ought to have a more constrained expert judgement score card instead. Perhaps an examination process that dings those banks who seem to have trouble running with scissors with legally binding orders on remediating the management failures specifically identified as the problem would yield better outcomes?

From one “retired” bank regulator to another, keep up the good work in your sub stack commentary. I look forward to reading them!

Respectfully,

Richard Gresser,

Ottawa Canada

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