Capital Structure in Banks for FRM Part II

What this chapter covers

Capital Structure in Banks: topics in the order to study them

1. 1Bank Capital Structure and Role of CapitalStart here to learn why banks hold capital, how leverage amplifies returns and losses, and what loss absorption means. Everything later builds on this.
2. 2Regulatory Capital: Tier 1 and Tier 2Next, learn the Basel definitions of Common Equity Tier 1, Additional Tier 1 and Tier 2, since the ratios in the later topics use these terms.
3. 3Capital Adequacy Ratios and BuffersWith the tiers clear, you can compute capital ratios against risk-weighted assets and see how minimums, the conservation buffer and the countercyclical buffer stack.
4. 4Economic Capital and Capital AllocationNow move to the internal view. You compare model-based capital at a confidence level with the regulatory requirement and see how capital is allocated to business lines.
5. 5Optimal Capital Structure and Cost of Capital for BanksFinish with the funding trade-off. It needs the earlier ideas of regulatory limits and risk-based capital to judge how equity and debt affect cost and returns.

How to prepare Capital Structure in Banks

1. Build a one-page map of the capital stack: Common Equity Tier 1, Additional Tier 1, Tier 2, with what each can include and what it is meant to absorb.
2. Learn the ratio formulas in plain form: capital ratio = eligible capital ÷ risk-weighted assets. Practise with each tier as the numerator.
3. Write out how the minimum requirements and buffers add up, and what restrictions follow when a bank falls into a buffer range.
4. Compare regulatory and economic capital in a short table of your own: purpose, who sets it, confidence level, and how each is used.
5. Work through return on equity and cost of capital cases, showing how more equity or more debt changes risk, return and required return.
6. Do timed multiple-choice sets and review each wrong answer by writing the exact term or step you missed.
7. Revise on your phone using short flash notes of definitions and formulas, and re-test yourself a few days before the exam.

Common mistakes in Capital Structure in Banks

• Mixing up Additional Tier 1 and Tier 2 as the same layer.

  Fix: Remember the purpose: Additional Tier 1 absorbs losses as the bank continues operating, Tier 2 absorbs losses only at failure or resolution.

• Dividing capital by total assets instead of risk-weighted assets.

  Fix: Check the denominator first. Risk-based ratios use risk-weighted assets; the leverage ratio uses an exposure measure that is not risk-weighted.

• Treating buffers as part of the minimum requirement.

  Fix: Keep minimum and buffers separate. Falling into the buffer range does not mean failing the minimum, but it brings restrictions on payouts.

• Assuming economic capital must equal regulatory capital.

  Fix: Remember they have different purposes and methods. Economic capital uses internal models and a chosen confidence level; regulatory capital follows supervisory rules.

• Concluding that more equity always lowers the cost of funding in every case.

  Fix: State the trade-off: more equity reduces default risk and can lower the required return on debt, but equity itself has a higher required return. Read the question for the exact assumptions.

• Ignoring the interpretation step after a calculation.

  Fix: Always compare the result with the minimum and buffers and state the consequence, such as whether the bank has headroom or faces restrictions.

Last-day revision: Capital Structure in Banks

• ✓Capital absorbs unexpected losses and protects depositors and the financial system.
• ✓Common Equity Tier 1 is the highest-quality capital and is the core going-concern layer.
• ✓Additional Tier 1 is going-concern capital that must be able to absorb losses while the bank operates.
• ✓Tier 2 is gone-concern capital that absorbs losses in resolution or failure.
• ✓Capital ratio = eligible capital ÷ risk-weighted assets.
• ✓Leverage ratio uses Tier 1 capital over a non-risk-weighted exposure measure.
• ✓Buffers sit above minimums; breaching them triggers restrictions such as limits on distributions.
• ✓The countercyclical buffer is set by national authorities and varies with credit conditions.
• ✓Economic capital is a model-based estimate of capital needed at a chosen confidence level.
• ✓Regulatory capital is rule-based; economic capital is internal and risk-sensitive.
• ✓Higher leverage raises return on equity when returns are good and magnifies losses when they are bad.
• ✓Equity is costlier than debt per rupee or dollar, but more equity lowers default risk and funding cost.

Capital Structure in Banks practice questions

• A regulator raises the countercyclical capital buffer for a jurisdiction from 0% to 2% of RWA during a period of rapid credit growth. What i…
• A bank's CFO proposes to raise its return on equity by replacing $2 billion of common equity with senior debt while keeping assets unchanged…
• A bank's Corporate unit has net income after expected losses of 60 million, and is allocated economic capital of 400 million. The bank's cos…
• A bank has CET1 of 54 billion, Additional Tier 1 of 12 billion, Tier 2 of 18 billion, and risk-weighted assets of 600 billion. Under Basel I…
• A bank's risk committee notes that its economic capital model shows lower capital need than regulatory capital for its mortgage book, while …
• A bank has CET1 of 700, Additional Tier 1 of 400, Tier 2 of 500, and risk-weighted assets of 10,000 (all USD millions). Use Basel III minimu…
• A bank is subject to a 4.5% minimum CET1 requirement, a 2.5% capital conservation buffer, a 1.0% G-SIB surcharge and a 1.0% countercyclical …
• A bank has a minority interest in a consolidated banking subsidiary and holds a significant investment in the common shares of an unconsolid…

Capital Structure in Banks in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

• CS ExecutiveCapital Structure
• CFA Level ICapital Structure
• CMA IntermediateCapital Structure and Capital Stacking
• CFA Level IIMeasuring and Managing Market Risk