I am a big proponent of increasing capital requirements (especially on banks that are deemed too big to fail). The World Bank produced a nice
report summarizing capital requirements and leverage during the mid-2000s.
Here is a discussion in the Economist about capital requirements.
My preference for capital requirements would that they are increasing with the overall size of the balance sheet, riskiness of the assets held, and the greater the level of interest rate risk.
Here is a good article from the
Economist supporting capital requirements:
Two numbers stand out. First, the short-term cost of tougher
rules is fairly low: assuming a three-percentage-point increase in
capital ratios and a four-year implementation period, absolute GDP would
be just 0.6% lower than it would otherwise have been. Second, and
offsetting the first effect, once the new rules are in place the
benefits from having fewer crises are big. In a base case and assuming a
three-percentage-point capital-ratio increase, the absolute level of
GDP rises by some 1.7%.
Over the last three years there has been tremendous attention into
financial reform. A major theme in our class will be discussing the role
financial markets play in the economy and how to go about regulating
these markets. Recently the US passed the Dodd-Frank bill which attempts
to prevent future financial crises. Unfortunately, one area the bill
fails to address is the need for bank capital requirements. Before
getting into the gory details it may help to provide a brief side note
on the role of bank capital.
Like any firm banks have assets and liabilities. Asset include loans
made to households and business and government bonds. Liabilities
include demand deposits (checking accounts) IRAs, and CDs, basically our
accounts with banks. Bank capital is the difference between assets and
liabilities. It shows up on the liabilities side of the balance sheet.
Banks prefer to not hold excess capital, they would prefer to pass the
capital onto the owners in the form of equity or use the funds to create
more loans. Nonetheless capital helps banks insurance against large
loan losses. Remember loans (notably housing and commercial loans)
appear on the asset side of the balance sheet, when banks experience
large loan losses the asset side of the balance sheet decreases. If loan
losses are large enough bank assets could become less than liabilities
making the bank insolvent (i.e. the bank fails). Now because bank
capital is a liability it helps offset loan losses.
Suppose you have two banks (A and B). Bank A has $100 million in capital
and Bank B has $25 million. Each bank experiences large loan losses and
writes down their assets by $50 million. Bank A will be left with $50
million in capital but Bank B will be insolvent with a net worth of -$25
million. If we go back 2 years, banks that failed lacked sufficient
capital to insure against large loan losses.
Jump ahead to today and we still have not solved the bank capital
requirements. Wall Street has argued against capital requirements,
forcing banks into holding added capital will sufficiently hamper
lending. I firmly believe we need to institution capital requirements
based on three components:
1) The size of a bank's balance sheet. If mega banks pose added risk to
the economy we need to force them into holding more capital.
2) The composition of a bank's assets. If banks want to hold riskier
assets (i.e. subprime mortgages) we need to require greater capital
requirements.
3) The composition of a bank's liabilities. If a bank has liquid
liabilities (i.e. dependent on short-term financing) they are more prone
to experience a bank run and a loss of funding, holding greater levels
of capital will temper this threat.
The basis for my argument comes from the last 20 years of banking
crises. We have seen large financial crises occur in Asian, Latin
America, Scandinavia, and now the United States. In nearly every case
banks did not hold sufficient amounts of capital. The solution to our
financial crisis was to inject major banks with added capital (remember
TARP). If banks were holding sufficient capital we could have prevented
needing to bailout nearly every large bank.
Of course there was a fear of a large slowdown in global growth. Well,
it turns out the costs of financial crises trumps the reduction in
growth from a slowdown in banking lending. Banks would be forced into
more due diligence when issuing loans and likely choose safer
investments.