Basel III Endgame
US capital rules
expanded risk-based approach
ERA
standardised approach
operational risk
credit risk
RWA
Fed
OCC
FDIC
March 2026 proposal

Basel III Endgame (US) Capital Impact Estimator

Estimates the risk-weighted asset (RWA) impact on a US bank under the March 19, 2026 federal banking agency NPR implementing Basel III Endgame reforms (consultation closed June 18, 2026). Models the Expanded Risk-Based Approach (ERA) credit risk standardized weights, operational risk Business Indicator Component (BIC), and off-balance sheet conversion factors. Does not include market risk (covered by T340 FRTB tool). Outputs AP2 mandate.

Tool URL: https://ainumbers.co/tools/341-basel-iii-endgame-capital-impact-estimator.html AP2/Policy Mandate export: yes

post/v1/tools/basel_iii_endgame_capital_estimator

Request

  • Base URL: https://ainumbers.co
  • URL: https://ainumbers.co/v1/tools/basel_iii_endgame_capital_estimator
  • Auth: none declared

Request body

total_assets_bnnumber required

Total assets in USD billions

cet1_ratio_pctnumber required

Current CET1 ratio (%)

gross_income_mnumber

3yr average gross income in USD millions

airb_usagestring

yes | no

Response

Successful tool execution result

era_rwa_bnnumber

Estimated total RWA under ERA in USD billions

rwa_change_bnnumber

Change in RWA vs current approach in USD billions

rwa_change_pctnumber

Percentage change in RWA

cet1_era_pctnumber

Estimated CET1 ratio under ERA

cet1_impact_pctnumber

CET1 ratio change in percentage points

distance_to_requirement_pctnumber

Distance from ERA CET1 to minimum + conservation buffer + GSIB surcharge

op_risk_rwa_bnnumber

Operational risk RWA under BIC in USD billions

impact_labelstring

HIGH IMPACT | MODERATE IMPACT | LOWER IMPACT

Changes

No recorded changes to this operation across all 1 revision of this API.