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FRM Exam Part II · Capital Planning at Large Bank Holding Companies: Supervisory Expectations and Range of Current Practice

Scenario Design and Stress Testing Practices in Bank Capital Planning

Updated 11 October 2026 · Fact-checked

Scenario design is how a bank builds hypothetical economic and market conditions, in line with its own risk profile, to test losses, revenue and capital. Stress results are compared with baseline projections. The gap shows whether capital stays above minimums and internal targets, and what actions are needed.

Understand Scenario Design and Stress Testing Practices

Capital planning asks one question: will the bank still hold enough capital after a severe but plausible shock? A stress test answers it by projecting losses, revenue, expenses and capital under a defined scenario. The baseline is the expected path. The stress scenario is a severe, adverse path.

Supervisors such as the US Federal Reserve in CCAR supply their own scenarios. These are the same for every bank, so results can be compared. But they cannot capture every bank's weak spots. So supervisors expect each bank to also design bank-specific (internal) scenarios tied to its own risk profile: its portfolios, concentrations, funding, business mix and geography.

Good scenario design starts with risk identification. The bank lists its material risks and vulnerabilities, then asks which events would hurt it most. It then builds a narrative (for example a deep recession with falling house prices, a spike in unemployment and a market sell-off) and translates it into macro variables and risk factors: GDP, unemployment, interest rates, equity prices, property prices, credit spreads. These feed models for credit losses, trading losses, net interest income and other revenue.

The results flow to capital. Projected losses reduce earnings and capital; risk-weighted assets may rise. The bank compares post-stress capital ratios with regulatory minimums and its own internal targets, and considers management actions such as cutting dividends or buybacks, raising capital or reducing exposures. Supervisors check that scenarios are severe enough, that they cover the bank's key risks, that assumptions are documented, and that results are used in decisions, not just reported. Weak practice includes relying only on supervisory scenarios, using mild scenarios, and ignoring risks that are hard to model.

Key formulas to remember

Post-stress capital ratio
Capital ratio = (Starting capital + Projected net income − Capital distributions − Other capital deductions) ÷ Risk-weighted assets
Under stress, net income falls or turns negative, and RWA may rise. Use the stressed values of each item.
Capital shortfall or buffer
Buffer = Post-stress capital ratio − Minimum (or internal target) ratio
A negative value signals a shortfall. Compare with both the regulatory minimum and the internal target.
Stress impact
Stress impact = Stressed outcome − Baseline outcome
Measures the incremental effect of the scenario, so baseline results are not mistaken for stress losses.

How to solve Scenario Design and Stress Testing Practices questions

Use this order for any scenario design or stress testing question.

  1. 1Identify what is asked: scenario design, link to risk profile, supervisory vs internal scenario, or use of results for capital.
  2. 2Name the bank's material risks and vulnerabilities (portfolio concentrations, funding, business mix).
  3. 3Check that the scenario is severe but plausible and covers those specific risks, not only generic macro shocks.
  4. 4Separate the baseline from the stress path and look at the difference.
  5. 5Trace the effect: macro variables, then losses and revenue, then net income, then capital and RWA.
  6. 6Compare post-stress capital with the regulatory minimum and internal target; note any management actions.
  7. 7Pick the option that shows governance: documented assumptions, challenge, and results used in decisions.

Quickest way: Risk profile first, then capital impact

When to use it: Use for qualitative MCQs asking what a good practice or weakness is.

  1. Ask: does the scenario reflect the bank's own risks? If not, it is a weakness.
  2. Ask: is it severe yet plausible? Too mild or implausible is wrong.
  3. Ask: do results feed capital decisions? If only reported, it is weak.
  4. For numbers, compute post-stress capital ÷ RWA and compare with the target.

Common mistakes in Scenario Design and Stress Testing Practices

  • Treating supervisory scenarios as enough for capital planning

    They are mandatory and well known, so students assume they cover everything.

    Fix: Remember supervisors expect bank-specific scenarios too, reflecting the bank's own risk profile.

  • Confusing baseline with stress

    Both are projections of the same items.

    Fix: The baseline is the expected path; the stress path is adverse. Stress impact is the difference.

  • Thinking the scenario must be the most extreme imaginable

    Severity is stressed in the text.

    Fix: Scenarios must be severe but plausible, and relevant to the bank's vulnerabilities.

  • Forgetting RWA and distributions in the capital calculation

    Focus stays on losses only.

    Fix: Include dividends, buybacks and changes in RWA when finding the post-stress ratio.

  • Seeing stress testing as a reporting exercise

    Results are often produced for regulators.

    Fix: Good practice links results to capital targets, limits, strategy and management actions.

Worked examples

Example 1

A bank starts with common equity of USD 40 billion and RWA of USD 400 billion. Under a stress scenario it projects cumulative net losses of USD 6 billion and capital distributions of USD 2 billion. RWA rises to USD 420 billion. Its internal target ratio is 8%. Find the post-stress ratio and the buffer.

Show the solution
  1. Post-stress capital = 40 − 6 − 2 = USD 32 billion.
  2. Post-stress ratio = 32 ÷ 420 = 7.62%.
  3. Buffer = 7.62% − 8% = −0.38 percentage points.

Answer: The post-stress ratio is about 7.62%, which is 0.38 percentage points below the 8% target, so the bank shows a shortfall against its internal target and should consider actions such as cutting distributions.

Example 2

A bank with large commercial real estate exposure uses only the supervisory severely adverse scenario for capital planning. Which weakness is most relevant, and what should it do?

Show the solution
  1. The supervisory scenario is common to all banks and may not stress this bank's concentration enough.
  2. The bank's main vulnerability is commercial real estate, so its own scenario should include a sharp fall in property values and rising vacancies.
  3. It should translate this into risk factors, run its loss models, and compare resulting capital with its internal target.

Answer: The weakness is no bank-specific scenario tied to its risk profile. It should add an internal scenario that stresses commercial real estate and use the results in capital decisions.

Exam tips

  • If an option says the bank relies only on supervisory scenarios, it is usually the weakness.
  • Look for the words risk profile, severe but plausible, and use in decision making; they mark the correct answer.
  • In numerical questions, adjust both capital and RWA before computing the ratio.
  • Do not confuse scenario design with the models that translate the scenario into losses; the question may test either.

Practice questions from Capital Planning at Large Bank Holding Companies: Supervisory Expectations and Range of Current Practice

Scenario Design and Stress Testing Practices in other exams

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

Scenario Design and Stress Testing Practices: frequently asked questions

What is the difference between a baseline and a stress scenario?

The baseline is the expected economic and business path. The stress scenario is a severe adverse path. Comparing the two shows the capital impact of the stress.

Why do banks need their own scenarios if supervisors provide one?

Supervisory scenarios are common to all banks, so they may miss a bank's specific concentrations or vulnerabilities. Bank-specific scenarios reflect its own risk profile.

How are stress test results used in capital planning?

They show whether post-stress capital stays above minimums and internal targets. They support decisions on dividends, buybacks, capital raising and risk reduction.

What makes a stress scenario good?

It is severe but plausible, linked to the bank's material risks, clearly documented and challenged by governance. Its results are used in real decisions.