View original document

The full text on this page is automatically extracted from the file linked above and may contain errors and inconsistencies.

At the Central Bank of the Republic of Turkey’s International Conference on Financial
Stability and Implications of Basel II, Istanbul, Turkey
May 17, 2005

Financial Stability Benefits and Implementation Challenges of Basel II
I want to thank the Governor and the Central Bank of Turkey for the invitation to speak at
this prestigious conference. The sharing of ideas among policymakers, academics, and
bankers at venues such as this benefits all involved and, I believe, helps us assess important
issues relating to the strength and stability of banking and financial markets. I hope that my
remarks today will contribute to that overall objective.
This conference on financial stability and implications of Basel II is certainly timely. As you
know, members of the Basel Committee on Banking Supervision are working diligently to
implement the framework issued last June. At the same time, we are all dedicated to
maintaining financial stability in our respective jurisdictions, and in global banking and
financial markets as a whole. In this light, Basel II should not be seen as an end in itself, but
a means to promote broad stability and enhance safety and soundness of financial
institutions.
Today I want to address three issues. First, I will describe the challenges facing bank
regulators as they strive to improve financial stability. Then I will briefly describe some of
the Basel II issues in the United States that were covered in the recent interagency press
release and in last week's congressional hearing. Finally, I want to describe the challenges
bank supervisors face in effectively implementing Basel II.
Financial Stability
As a central banker, I realize how vital it is to have a strong, stable financial system to
support effective monetary policy. Excessive volatility in financial markets can significantly
raise the cost of capital for business investment and adversely affect real economic
expansion. History has demonstrated that a weak financial sector can significantly impede
the monetary transmission mechanism when the central bank is trying to stimulate the
economy. Since banks are the core of the financial system, efforts to improve their risk
management can help mitigate the impact of shocks on financial markets and real economic
performance. With effective risk management, banks are better able to plan alternatives to
mitigate risks when they exceed predetermined risk exposure levels. It is important to
emphasize that the normal fluctuations in asset prices that result from dynamic demand and
supply conditions, and even some increase in uncertainty, do not usually generate financial
instability. Put differently, financial stability implies that key institutions in the financial
system are operating without significant difficulty and markets are generally functioning
well.
Bankers implicitly accept risk as a consequence of providing services to customers and also
take explicit risk positions that offer profitable returns relative to their risk appetites. The job
of bank supervisors is to ensure that bank capital represents an adequate cushion against

losses, especially during times of financial instability or stress. Basel II is yet another step to
minimize the negative consequences of risk-taking by financial institutions, particularly
those institutions that could contribute to financial instability.
This is reflected in the use of unexpected loss to calibrate capital. The assumption is that
normal volatility should be covered by normal operating earnings. For losses beyond the
normal range of expectations, capital should be in place to absorb the loss and leave the
financial institution stable and able to continue operating effectively. Thus, financial
institutions with weaker profit margins, or with customers with more varied ability to meet
their obligations, should have more capital. It is important here to distinguish between higher
expected losses, for which bankers raise prices to cover risk, and greater volatility of results,
which requires additional capital.
Greater sensitivity of regulatory capital to risk has taken on increased significance as
virtually all banking markets have become considerably more concentrated, with some
companies--by their very size alone--posing the potential for systemic risk. Also, the
advanced approaches of Basel II better align regulatory capital to the risks presented by
sophisticated financial instruments and to the complexity of large, internationally active
financial institutions. The current Basel I framework is more focused on credit risk for
balance sheet assets. But sophisticated financial institutions carry fewer of their potential
exposures on their books. Rather, after credit- and market-risk mitigation, it is often the
process of managing risks or laying off exposures that has created earnings surprises in
recent years. Basel II is intended to mitigate potential disruptions in banking markets by
improving risk measurement and management; establishing a better link between risk and
minimum capital ratios; and providing more information to bankers, supervisors, and other
market participants.
But we should also remember that the increased sensitivity to risk in Basel II carries with it
the possibility that minimum capital ratios could actually be more volatile than they are
today. As my colleague Bill Rutledge pointed out yesterday, that is what we expect, since
those ratios will be more responsive to changes in risk. The Basel Committee has attempted
to reduce procyclicality effects in the new framework, incorporating factors such as
estimates of loss severities that focus on downturns. These are wise decisions intended to
obviate the need for institutions to raise large amounts of capital at the trough of a
downturn--something that can be quite difficult and add to financial market instability. But I
think we could all agree that Basel II should not be unresponsive to changes in risk, for
example when the obligor rating distribution at an institution shifts to poorer-quality
borrowers. In my view, we want these signals of changes in risk reflected in regulatory
capital levels. But by being careful about the extent that capital levels respond to cyclicality,
we are trying to make sure that risk signals do not on their own generate added instability.
This requires some balancing.
Greater responsiveness of regulatory capital ratios to risk is something that institutions will
have to learn to manage under Basel II. Given the potential for increased volatility in their
capital ratios, I expect that institutions operating under Basel II will maintain a certain
cushion above their minimum ratios since they must have the capital in place before the date
of measurement of risk.
Indeed, Pillar 2 of the Basel framework (supervisory review) requires banks to develop a
viable internal process for assessing capital adequacy that helps determine the amount of
capital actually needed for their particular business mixes and risk profiles. Explicit

assumptions are built into Pillar 1 (minimum capital requirements), such as the idea that
portfolios are well-diversified and do not contain geographic or sectoral concentrations-assumptions that are not true in the case of many institutions. Supervisors must remind
institutions that it is initially the banks' job to address any deviations from Pillar 1
assumptions, as well as any additional factors that affect the risk of the individual bank, and
adjust their capital accordingly. Under Pillar 2, supervisory authorities, in turn, will review
these adjustments by banks and could ask them to take additional steps to ensure that all
risks have been addressed.
There are additional reasons why I expect that well-run financial institutions will maintain
capital ratios above the regulatory minimums, as they have under the existing Basel I
framework. Some markets and customers will require their banks to have a stronger credit
rating than that implied by the Basel I or II minimum capital frameworks. Banks will also
continue to be opportunistic in pursuing mergers and new business expansion, and this
requires capital above the regulatory minimum to be able to respond promptly to new
initiatives. Finally, bankers who are using economic capital models such as RAROC (riskadjusted return on capital) recognize that Basel II does not take into consideration some
forms of unexpected losses, for example, higher charge-offs that occur when new products
are introduced, information technology systems change, merger integrations occur, and
internal control processes occasionally prove ineffective.
Implementation Efforts in the United States
The U.S. banking agencies' reaction to the results of the fourth Quantitative Impact
Study--known as QIS4--shows how seriously we are taking Basel II implementation. In a
statement issued on April 29, the U.S. banking agencies indicated that the minimum
regulatory capital changes resulting from QIS4 were more variable across institutions and
capital dropped more in the aggregate than the agencies had expected. This was the impetus
for deciding to delay issuance of our next round of proposals for Basel II.
These unexpected results show the continued benefit of conducting periodic quantitative
impact studies. They serve as a milestone to help us calibrate the progress of the framework
and the bankers as we move to Basel II. We now must determine the reasons for the
unexpected results from QIS4. Do they reflect actual differences in risk among respondents
when prior supervisory information suggested more similarity in credit quality? None of the
participating banks has completed their databases and models for all of their risk areas. In
some cases, this created results that would not be reliable for implementing Basel II. For
example, for some portfolios, expected losses reflected only the last year or two of results.
Thus, the strong credit performance of recent experience was not balanced by higher losses
at other points of the credit cycle. Were there limits of the QIS4 exercise itself? Is there a
possible need for adjustments to the Basel framework itself? Analyzing the data used in
QIS4 is vitally important, because ultimately the success of Basel II will depend on the
quantity and quality of data that banks have to use as inputs to the framework. I am sure that
those of you working on Basel II--particularly the advanced approaches--are facing the same
types of issues in your own countries.
For those of you who will be conducting QIS5 or similar exercises, I strongly suggest that
you include qualitative responses from the participants as well as quantitative data. We are
finding this very useful as we review the results and have follow-on discussions with
bankers.
U.S. regulators expect to provide additional information on the lessons we learn from the

QIS4 review in the near future. The notice of proposed rulemaking for Basel II will
incorporate what we learn from this exercise. But we really are caught in a process dilemma.
Bankers cannot complete their models and collect the necessary data until they know what
the specific requirements will be. Regulators, on the other hand, will have to develop these
requirements before seeing the actual results of these models and robust databases. The
process we have for vetting Basel II in the United States is probably similar to those
followed in many other countries. We are putting forward proposals and seeking comment
from the industry, our legislature, and other interested parties. Given what a vast undertaking
Basel II is, this seems entirely appropriate and beneficial.
In addition to what we learn from the work on QIS4 results, we will also assess the trading
and banking book comments of the Basel Committee on Banking Supervision and the
International Organization of Securities Commissions. We will incorporate the latest
proposal into the notice of proposed rulemaking and hope to complete our efforts in a timely
manner.
Challenges for Supervisors
In preparing for Basel II, supervisors realize that they must address their own capital
needs--that is, human capital. Throughout Basel II implementation in the United States, it
has become strikingly apparent that supervisors will need a higher degree of knowledge,
skill, and experience. Even just our preliminary work on Basel II, which includes writing
regulations, drafting guidance, and evaluating preliminary estimates from banks, has
consumed substantial resources within the Federal Reserve System. We are in the process of
training existing staff members and recruiting new ones, and that itself takes time and
resources. We are aware that to implement a framework of the complexity and scope of the
advanced approaches of Basel II, we need highly qualified supervisors. As we have learned
over the past few years, many aspects of Basel II will require a considerable amount of
judgment and experience. That is, as supervisors engage in the qualification of institutions
for Basel II and then conduct ongoing monitoring, they will need to become intimately
familiar with many technical aspects of the framework and have the ability to assess each
institution in context. We want to ensure that in all Basel II discussions, bankers will sit
across the table from supervisory staff who understand the framework and how it applies to
individual institutions.
This does not pertain just to Basel II, specifically, but also to supervision of evolving
risk-measurement and -management practices more generally. As they have in the past,
supervisors must keep pace with the latest developments in the industry and be able to
differentiate among them in terms of appropriateness. One of the many attractive
characteristics of the Basel II framework is its flexibility for incorporating new best practices
without having to be fundamentally restructured. It provides a useful and credible basis for
improving bank practice today and allowing for future improvements--which could include
actual modifications to the framework. We consider this vitally important because banking
will remain a highly dynamic industry. Supervisors will have to be especially attentive to
changing best practices and ensure that Basel II does not inhibit adoption of new banking
practices and financial instruments.
Conclusion
Maintaining financial stability in global banking and financial markets continues to be an
important objective of regulators, bankers, and other market participants, particularly
because of the negative impact that financial instability has on economies as a whole. Basel
II, in my view, will help improve financial stability. The new framework will enable bank

regulatory capital ratios to be more responsive to changes in risk and will foster additional
disclosures by banks about their risk-measurement and -management systems. And even
though minimum regulatory capital ratios are likely to be more volatile under Basel II, this
reflects greater risk sensitivity. Perhaps most important, Basel II will encourage banks to
develop their systems to measure and manage risk as part of the investment needed to
support strategic initiatives. The greater volatility in measured risk, coupled with strategic
capital planning, should encourage bankers to continue to maintain actual capital levels
above regulatory minimums.
In the United States, we are working very hard on Basel II implementation and are taking the
appropriate, measured steps to ensure that we get it right. I expect that those in other Basel
member countries are doing the same, and facing similar challenges. Of course, certain
non-Group of Ten countries are looking to see if adapting Basel II is the best choice for them
in the near term. For all of us engaged in Basel II work, it is helpful to remember that certain
prerequisites have to be met--particularly for the advanced approaches--including the
development of qualified and experienced staff to oversee banks' adoption of the new
framework.

Return to top
2005 Speeches
Home | News and events
Accessibility | Contact Us
Last update: May 17, 2005