Set out what Basel II changed, including its three pillars.
The idea
Basel II was published in 2004 and phased in from about 2007. It kept the 8 percent minimum ratio on total risk-weighted assets (RWA), the 1996 market risk rules and the capital definitions, but rebuilt the framework on three pillars. Pillar 1 is minimum capital. It has more risk-sensitive credit risk charges (standardized, foundation IRB, advanced IRB), market risk as before, and a new operational risk charge. Pillar 2 is supervisory review. Supervisors assess a bank's own capital assessment process and may require more than the Pillar 1 minimum, for example for concentration risk. Pillar 3 is market discipline through public disclosure of risk exposures and capital adequacy. Market and operational risk are capital charges, so they are converted into RWA terms as follows: RWA = credit RWA + 12.5 × market risk capital + 12.5 × operational risk capital. Capital must then be at least 8 percent of that total. The usual mistake is adding capital charges to RWA without the 12.5 factor.
Formulas
Basel II total risk-weighted assets
RWA = RWAc + 12.5 × (MRC + ORC)
- RWAc
- credit risk-weighted assets
- MRC
- the market risk capital charge
- ORC
- the operational risk capital charge
Capital must be at least 8 percent of this total. Adding the charges without the 12.5 factor is the usual mistake.
A practice question
Which Basel II pillar encourages prudent behaviour by requiring banks to publish information on their risk exposures and capital adequacy?
- Pillar 1, minimum capital requirementsWhy not: Pillar 1 sets the capital formulas, not public disclosure.
- Pillar 3, market discipline - correct
- Pillar 2, supervisory reviewWhy not: Pillar 2 involves supervisors assessing the bank, not public disclosure to the market.
- The Tier 3 capital provisionWhy not: Tier 3 capital was a type of short-term subordinated debt allowed under the 1996 amendment, not a pillar.
Pillar 3 relies on disclosure so that investors and counterparties can reward well-capitalised banks and penalise weak ones.
A harder one
A bank has credit risk-weighted assets of USD 600 million, a market risk capital charge of USD 15 million and an operational risk capital charge of USD 12 million. Under Basel II, minimum total capital at 8 percent is closest to:
- USD 75.0 million - correct
- USD 50.2 millionWhy not: Adds the two capital charges to RWA without the 12.5 multiplier.
- USD 48.0 millionWhy not: Covers credit risk only, leaving out the market and operational risk charges.
- USD 63.0 millionWhy not: Includes market risk but omits the new Basel II operational risk charge.
Total RWA = 600 + 12.5 x (15 + 12) = 937.5. Capital = 8% x 937.5 = 75.0.
The hardest tier
A bank has Tier 1 capital of USD 70 million, credit risk-weighted assets of USD 700 million, a market risk capital charge of USD 8 million and an operational risk capital charge of USD 6 million. Its Basel II Tier 1 ratio, against total RWA, is closest to:
- 9.8 percentWhy not: Adds the capital charges to RWA without converting them with the 12.5 multiplier.
- 10.0 percentWhy not: Divides by credit RWA only and ignores the market and operational risk components.
- 8.8 percentWhy not: Converts market risk but omits the operational risk charge from the denominator.
- 8.0 percent - correct
Total RWA = 700 + 12.5 x (8 + 6) = 875. Tier 1 ratio = 70/875 = 8.0 percent, which comfortably exceeds the 4 percent Tier 1 minimum.
In the app: 6 practice questions on this outcome, spaced review that brings it back before you forget it.
Start free →More in Capital Regulation Before the Global Financial Crisis
- Account for why the Basel regulations were introduced, including the main risk exposures they target, and for why they were revised over the years.
- Explain how Basel I's original guidelines arrive at risk-weighted assets and at the capital a bank must hold.
- Outline what the 1995 and 1996 amendments brought in, namely rules on netting credit exposures and ways to compute market risk capital for trading book assets.
- Contrast how Basel II derives credit risk capital under the standardized approach, under the foundation IRB approach and under the advanced IRB approach.
- Work out Basel II credit risk capital with the internal ratings-based (IRB) approach.
- Contrast how Basel II's basic indicator approach, standardized approach and AMA (advanced measurement approach) each produce a charge for operational risk.
- Give a summary of what the Solvency II framework requires of insurance companies in terms of capital.