Capital adequacy affects all corporate entities, but as a term it is most often used in
discussing the position of firms in the financial sectors of the economy, and in particular
whether firms have adequate capital to guard against the risks that they face. A balance needs
to be struck between the often conflicting perspectives of the various stake-holders; lenders
require capital to ensure that there is a cushion against possible losses at the borrowing firm,
while shareholders often focus upon return on capital. For firms operating in the financial
sector, the general public also has a stake in the firm as failure may have implications for the
financial stability of the system as a whole.
discussing the position of firms in the financial sectors of the economy, and in particular
whether firms have adequate capital to guard against the risks that they face. A balance needs
to be struck between the often conflicting perspectives of the various stake-holders; lenders
require capital to ensure that there is a cushion against possible losses at the borrowing firm,
while shareholders often focus upon return on capital. For firms operating in the financial
sector, the general public also has a stake in the firm as failure may have implications for the
financial stability of the system as a whole.
The focus of financial stability is primarily upon banks because of the functions that they
perform. Banks not only provide a significant proportion of the financing required by the
economy, but they also act as a conduit for payments. Further, the financial sector is used by
central banks as a mechanism for transmitting changes in monetary policy through to the real
economy. The focus of financial stability is the financial system itself, rather than an
individual institution, but the means by which financial stability is achieved is through the
review of individual institutions. (See George (1994) for a policy speech on supervision and
financial stability.)
Users of the financial sector of the economy benefit from the competition within this sector,
and in response banks, and other firms, seek to optimize their business mix. In order to allow
competition within the financial sector those agents responsible for monitoring capital
adequacy need to give firms the freedom to take risks. On occasions, this means that firms in
the financial sector will fail. If this never happened either the costs to the users of banking
services would be prohibitive (and/or the range of services themselves extremely limited) or
the lender of last resort would effectively be taking all of the risks, but have no influence over
which risks it acquired.
Permitting banks to fail indicates a possible conflict between capital adequacy, deposit
protection (see Stone and Zissu, 1994a), and the perspective of other stakeholders such as
shareholders. Deposit protection schemes are operational in many countries, but most do not
protect the full value of every depositor's claim. The intention is usually to ensure that
depositors bear some responsibility for their actions when a bank is liquidated. If the deposits
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were entirely risk free then a significant group of stakeholders would have no interest in the
risks being taken and banks might be tempted into acquiring inappropriate types and levels of
risk.
Capital adequacy is intended to aid financial stability and, as a result, the role of an individual
institution in the system is the overriding concern, rather than individual institutions per se.
As the relationship between banking activities and other parts of the financial sector is
increasing in breadth and depth, there is the possibility of financial stability being disrupted
by non-banking activities. It is also the case that some sources of disruption could originate
from international activities. These developments have encouraged greater discussion among
supervisors of different financial sectors, both domestically and internationally.
Risk and Capital Adequacy
Banks, by virtue of their role in the economy, transform risks. The commonest risks
transformed are those of credit and liquidity, which are also the risks that banks have been
assuming for the longest periods of time. Hall (1993) provides a list of statutes relating to the
financial sector of the economy for Japan, UK, and USA, including some legislation still in
place from the 1930s. Many banks have extended their financial intermediation role and risk
taking from traditional activities to include many forms of market risk; this is an indication of
the continuing evolution of banks and their role in the economy.
Risks are often described as "qualitative" when it is difficult to provide an accurate value as
to their impact. This is in contrast to those risks seen as quantitative. An example of a
qualitative risk is settlement risk where, although the amounts at risk can be measured, the
probability of loss is difficult to assess. An illustration of settlement risk was provided by the
demise of the Herstatt Bank in Germany during 1974. In order to alleviate this particular risk
there has been a concerted effort to promote real-time payment settlement systems and a
general reduction in settlement times. In this case the interested parties have not only been the
supervisors, but also industry bodies and individual firms in the financial sector. Another
example of a qualitative risk is reputational risk, affecting either one particular bank or an
entire sector of the banking community. Other risks in this category involve various
management and systems issues, including valuation methods and risk management for
complex products, as well as acts that are potentially criminal.
Some commentators would suggest that there are no new risks in the system, but it would
appear that certain types of products and activities amplify the impact of a given risk; an
example would be some forms of derivative contracts. While derivatives may be a relatively
recent tool by which banks intermediate risk, capital adequacy standards have also evolved to
reflect their development. Some of the standards are based upon holding given quantities of
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capital for a given risk, while other standards may be qualitative. The Basle Supervisors
Committee issues statements on qualitative standards, such as the paper on risk management
guidelines for derivatives, as well as minimum quantitative standards, such as the Basle
Accord.
Banks and securities firms are required to hold capital against their quantitative and
qualitative risks. Until recently the main capital requirements, for banks, have addressed
credit and counterparty risk. For securities firms the focus has been upon market risk.
However, with the implementation of the Capital Adequacy Directive (which applies to
banks and securities firms in the EU) and proposed amendments to the Basle Accord, banks
will be required to hold capital against some of their market risks (see Stone and Zissu,
1994a). Both the Basle Accord and the Capital Adequacy Directive represent minimum
standards and local supervisors have the ability to impose higher requirements. For example,
the Basle Accord has 8 percent as the minimum ratio between capital- and risk-weighted
assets, but some supervisors impose higher ratios which typically reflect qualitative risks at
individual banks.
Capital may be in the form of equity, tier 1 capital, and various forms of subordinated debt,
upper and lower tier 2 capital, and must be capable of absorbing losses either on a continuing
basis or at least in the event of a bank's liquidation. Supervisors normally impose limits on
the contribution that different forms of capital can make to the composition of the capital
base.
It should be noted that the quantitative capital standards are based upon the values of the
positions held by the firms in the financial sector. Often national bodies produce guidelines
and recommendations on the application of accounting principles to banks and financial firms,
such as the British Bankers' Association statements of recommended practice. Differences
can occur between countries, in the capital required for an exposure, or position, due to
different accounting standards. This is a feature of on- and off-balance sheet items; however,
the International Accounting Standards Committee is in the process of producing
international guidance.