Bank Capital Adequacy Checklist
Executive Summary
Key Takeaways
- ✓ This checklist tests capital adequacy construction discipline — whether capital tiers, risk-weighted assets, and ratio thresholds are built transparently and connected live to the balance sheet forecast — not whether any specific regulatory capital calculation is itself correct.
- ✓ The central discipline this checklist tests is traceability — every capital ratio should be traceable to its component capital tier, its risk-weighted asset base, and the balance sheet forecast driving both, with no step obscured behind a single blended figure.
- ✓ A capital adequacy build that cannot show its minimum ratio and buffer thresholds as distinct, separate levels has not met this checklist's bar, regardless of whether the final reported ratio happens to be correct.
Objective¶
This checklist covers the structural construction of a bank model's capital adequacy build, within the Banking Financial Modelling pillar, as a construction-discipline check distinct from validating whether any specific regulatory capital calculation itself is correct.
Applicability¶
Applicable to any bank or financial institution financial model incorporating a capital adequacy or Basel ratio build, used by a model developer during construction or by a reviewer confirming the build is structurally sound and transparent before relying on the reported ratios.
Checklist¶
| # | Check Item | Why It Matters | Evidence to Collect |
|---|---|---|---|
| 1 | Capital is segmented into its regulatory tiers (CET1, additional Tier 1, Tier 2) rather than a single blended figure | A single figure cannot represent the tier-specific ratios a credit committee or regulator actually assesses | Capital tier build schedule |
| 2 | CET1 deductions (goodwill, disallowed deferred tax assets, other intangibles) are shown explicitly, not netted | Netted deductions prevent a reviewer confirming the deduction set is complete and correctly sourced | CET1 build showing gross components and deductions separately |
| 3 | The CET1 balance rolls forward from the model's own retained earnings and equity movements | A disconnected CET1 assumption can silently diverge from the model's actual results | CET1 roll-forward schedule |
| 4 | Risk-weighted assets are built from segment-level exposures and risk weights, not a single blended weight | A blended weight misrepresents the portfolio's true risk-weighted base | RWA build by segment |
| 5 | The RWA calculation approach (standardized, IRB, or a mix) is disclosed by exposure category | Undisclosed mixing of approaches obscures how the reported RWA figure was derived | Approach disclosure by segment |
| 6 | Minimum ratio requirements and capital buffers are shown as distinct, separately labelled thresholds | Breaching a buffer and breaching the hard minimum carry different consequences that must remain visible | Threshold schedule showing minimums and buffers separately |
| 7 | Capital ratios are calculated as a live output of the model's own capital and RWA build, not a separately maintained figure | A disconnected ratio calculation drifts out of consistency as the model is updated | Live formula tracing from capital and RWA inputs to the reported ratio |
| 8 | The balance sheet forecast is checked against resulting capital ratios before being presented as an achievable growth scenario | Forecast growth that breaches capital thresholds is not a genuinely achievable scenario as presented | Forecast-to-capital-ratio reconciliation |
| 9 | Risk weight density is calculated and available as a supporting diagnostic | Provides an earlier signal of balance-sheet risk-intensity change than the capital ratio alone | Risk weight density calculation |
Common Failures¶
- Capital presented as a single net figure with no visible tier segmentation or deduction detail.
- Risk-weighted assets calculated from a single blended risk weight rather than segment-level exposures.
- Minimum ratios and buffers collapsed into one combined "required ratio" figure.
- Capital ratios maintained as a separate, static calculation disconnected from the model's own balance sheet forecast.
Recommended Evidence¶
A completed capital adequacy review should be accompanied by the capital tier build schedule with deductions shown explicitly, the segment-level RWA build with approach disclosure, and a reconciliation showing how the balance sheet forecast's growth assumptions translate into the resulting capital ratio path across the forecast period.
How to Use This Checklist¶
Apply this checklist to the capital adequacy module specifically, alongside the Financial Model Audit Checklist for the model's general structural integrity — this checklist does not replace the general audit checklist's broader structural checks, and neither checklist validates the underlying regulatory correctness of a specific capital calculation.
Continue Reading¶
Related Pillars¶
Related Technical Guides¶
- Capital Adequacy Models
- Basel Capital Ratios
- CET1 Modelling
- Risk Weighted Assets
- Balance Sheet Forecasting
Related Checklists¶
How OXXON tests thisRun a free structural check with FMAE
Frequently Asked Questions
What does this checklist test?
Whether a bank model's capital adequacy build — capital tier segmentation and deductions, risk-weighted asset calculation, and minimum ratio and buffer thresholds — is structurally transparent and live-connected to the balance sheet forecast, as a construction-discipline check distinct from validating any specific regulatory calculation.
Does passing this checklist mean the bank's regulatory capital position is correct?
No — this checklist tests model construction discipline, not whether any specific regulatory capital calculation, deduction, or risk-weight assignment is itself correct under the applicable framework, which remains a determination for the bank's own regulatory reporting process.
Why does the checklist emphasize traceability so heavily?
Because a capital ratio presented as a single net figure, without visible component detail, cannot be independently reviewed — a reviewer needs to see the capital tiers, deductions, and risk-weighted asset build separately to confirm the resulting ratio is actually well-founded.
Who should use this checklist?
Model developers building a bank model's capital adequacy module, and advisory firms, lenders, or investment committees reviewing one, using it alongside the Financial Model Audit Checklist for the model's general structural integrity.
References
Related Articles
Banking Financial Modelling
Banking financial modelling is structurally distinct from a standard corporate model: it is built balance-sheet-first, with earnings derived from asset and liability volumes and spreads rather than a top-line revenue forecast, and it must represent loan portfolio and deposit dynamics, credit loss provisioning, and a set of bank-specific KPIs that a generic corporate model has no equivalent for. This page is the hub for the Knowledge Centre's banking modelling content: how the bank business model translates into a model's architecture, how the three financial statements are structured for a bank, how interest income and the net interest margin bridge are built, and how loan portfolios, deposits, and credit loss provisions should be modelled.
Capital Adequacy Models
Capital adequacy modelling represents the constraint regulatory capital requirements place on how much risk-weighted balance sheet a bank can carry against its available capital base. This guide covers how to structure a capital adequacy model — the capital tiers, the risk-weighted asset base they are measured against, minimum ratio and buffer requirements — and how it should be built as a live check against the balance sheet forecast rather than a standalone reporting exercise calculated after the forecast is already complete.
Basel Capital Ratios
The Basel III framework defines three core capital ratios — Common Equity Tier 1, Tier 1, and total capital — each measured against risk-weighted assets, layered with additional capital buffers above the hard minimums. This guide sets out the ratio definitions, the minimum and buffer levels the framework establishes, and how a bank model should represent each ratio and buffer as a distinct, named threshold rather than a single blended capital requirement.
CET1 Modelling
Common Equity Tier 1 (CET1) capital is the highest-quality, most loss-absorbing layer of regulatory capital, and it is the numerator of the most closely watched Basel ratio. This guide covers how to build the CET1 capital base in a model: the eligible components (common shares, retained earnings, certain reserves), the regulatory deductions applied (goodwill, certain deferred tax assets, other intangibles), and how the balance should roll forward period over period as retained earnings and other capital actions occur.
Risk Weighted Assets
Risk-weighted assets (RWA) convert a bank's balance sheet exposures into a common risk-adjusted base, applying higher weights to riskier exposures and lower weights to safer ones. RWA forms the denominator of every Basel capital ratio, making the risk-weighting methodology a first-order driver of reported capital strength. This guide covers the standardized and internal ratings-based (IRB) approaches to calculating RWA, how a model should build the RWA base from segmented exposures, and how risk-weight density should be tracked as its own diagnostic output.
Balance Sheet Forecasting
Balance sheet forecasting is the central forward-looking exercise in a bank model: forecasting segmented asset volumes (loans, securities) and liability volumes (deposits, wholesale funding) period by period, then reconciling the two through an explicit funding plan. This guide covers how to structure that forecast, how to build the funding plan that closes any gap between asset growth and deposit growth, and how the forecast should be checked against capital adequacy and liquidity constraints rather than produced in isolation from them.
Financial Model Audit Checklist
This checklist sets out the core structural checks that apply to any financial model regardless of sector or transaction type — formula integrity, circularity, linking, formatting, and output consistency. It is the flagship, general-purpose reference for teams running an internal review before a model is submitted for external audit, financing, or committee approval. Sector-specific and audience-specific checklists elsewhere in this section build on it rather than repeating it.