Calculate CET1, Tier 1, and Total Capital ratios, build RWA from exposures and risk weights, model buffers and minimums, and run stress scenarios with exports.
CET1 RatioTier 1 RatioTotal CapitalRWA Builder
Capital Ratios, RWA & Buffer Headroom Estimator
Enter capital and RWA to compute ratios, build RWA from exposures, estimate buffer headroom, and simulate stress impacts on capital adequacy.
CET1 Ratio
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Tier 1 Ratio
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Total Capital Ratio
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Tier 1 Capital
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Total Capital
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Capital to RWA
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Ratios are computed as Capital ÷ RWA. Definitions and adjustments for regulatory capital and RWA can differ by jurisdiction and supervisory interpretation. Use this tool for planning and internal scenario analysis only.
Exposure Type
Exposure Amount
Risk Weight (%)
RWA
Total Exposure
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Total RWA
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Average Risk Weight
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Top Row RWA
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Enter exposures and risk weights to estimate total RWA. Risk weights are inputs you control here so you can model different regimes, portfolios, or internal assumptions. Your regulatory RWA may differ due to eligibility criteria, model approvals, and supervisory adjustments.
Required CET1 Ratio
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Required Tier 1 Ratio
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Required Total Ratio
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CET1 Headroom
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Tier 1 Headroom
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Total Capital Headroom
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Additional CET1 Needed
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Additional Tier 1 Needed
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Additional Total Needed
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Requirements here are computed using your selected minima and add-on buffers as ratios applied to your RWA. Local rules may define buffers differently, restrict which instruments qualify, and apply netting or transitional adjustments. Treat outputs as planning estimates.
Scenario
CET1 Loss
Tier 1 Loss
Total Loss
RWA Change (%)
Post CET1
Post Tier 1
Post Total
Post RWA
CET1 %
T1 %
Total %
Status
Stress scenarios subtract losses from capital and apply a percentage change to RWA. Status indicates whether post-stress ratios meet the required thresholds you entered. Use scenario results for sensitivity analysis, not as regulatory reporting.
