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Basel II – Capital Charge for Credit Risk

Basel II, PRM Exam, PRM Exam III

This lesson is part 6 of 8 in the course Basel II - An Overview

Credit risk is defined as the possibility of losses associated with reduction of credit quality of borrowers or counterparties. In a bank’s portfolio, losses arise from outright default due to inability or unwillingness of a customer or counterparty to meet commitments in relation to lending, trading settlements, or any other financial transaction. Alternatively, losses occur from reduction in portfolio value due to deterioration in credit quality.

Under Basel I framework, assets were assigned uniform risk weights based on their category. For example, exposures to sovereigns were assigned a risk weight of 0%. Claims against banks were given a risk weight of 20%. Advances to corporates, individuals and firms were assigned 100% risk weight. The rating or health of the counterparty was not taken into account. Exposures to some of the banks can be riskier than exposures to some of the corporates. However, all banks enjoyed the risk weight of 20% and all corporates had a 100% risk weight.

This situation was corrected under Basel II. Under the revised accord, along with the category of a customer, his credit rating is given due importance.

Banks are permitted a choice between two broad methodologies for calculating their capital requirements for credit risk. These are:

Standardized Approach

Under this approach, credit risk is measured in a standardized manner based on external credit rating assessment.

Internal rating Based (IRB Approach)

Under this approach, banks are allowed to use their internal rating system for credit risk. This will be subject to the explicit approval of the bank’s supervisor. This approach has two options:

  1. Foundation IRB Approach
  2. Advanced IRB Approach

In the coming posts, we will discuss each of the above methods in detail.

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‹ Overview of Basel II Accord

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Basel II – Standardised Approach for Credit Risk ›

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In this Course

  • Introduction to Basel Capital Accord
  • The 1988 Basel Accord (Basel I)
  • Basel Accord – 1996 Market Risk Amendment
  • Why Basel I (1988 Accord) Needed to be Replaced?
  • Overview of Basel II Accord
  • Basel II – Capital Charge for Credit Risk
  • Basel II – Standardised Approach for Credit Risk
  • Basel II – Internal Ratings Based (IRB) Approach

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