OpenChainGraph Suite · ART-356 · Basel Endgame Reproposal · Operational Risk

Basel Operational Risk SMA (2026 Reproposal)

Basel Standardized Measurement Approach for operational-risk capital per the July 2026 US Basel Endgame reproposal (comment period closed 2026-06-18, final expected ~Q4 2026): marginal Business Indicator Component across the $1bn/$30bn buckets (12%/15%/18%) and the Internal Loss Multiplier, with a switch for the reproposal’s US-variant ILM neutralization. rule_status: proposed — re-pin at finalization. Formula-focused; pairs with the ERBA/standardized credit-RWA and output-floor tools in the same suite for a full capital-delta comparison.

BCBS d424 SMA Marginal BIC Buckets Internal Loss Multiplier rule_status: proposed
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Business Indicator (3-year averages)
Interest, Leases and Dividend Component.
Services Component.
Financial Component.
Internal Loss Multiplier
Only used when neutralization is unchecked. Fewer than 5 years defaults the ILM to 1 (insufficient loss history).
Calculation Detail
Execution Hash (SHA-256)







  

    
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Run the AINumbers MCP tool `compute_oprisk_sma_2026`. Task: Basel Standardized Measurement Approach (SMA) for operational-risk capital per the July 2026 US Basel Endgame reproposal (comment period closed 2026-06-18, final expected ~Q4 2026): marginal Business Indicator Component across the $1bn/$30bn buckets (12%/15%/18%) and the Internal Loss Multiplier, applying the reproposal's US-variant ILM neutralization to 1 by default with a switch to model the non-neutralized BCBS d424 formula.
Call it with arguments: {"policy_parameters":{"ildc_avg":300000000,"sc_avg":150000000,"fc_avg":50000000,"use_us_ilm_neutralization":true}}
Verify before trusting: call `verify_execution_hash` on mcp.ainumbers.co (https://mcp.ainumbers.co/mcp) with the parameter `claimed_hash` set to the returned `execution_hash`, passing the full artifact the run returned (the object containing `policy_parameters` + `output_payload` + `execution_hash`; equivalently `policy_parameters` + `output_payload` with `claimed_hash`), not the bare hash string.
Return the ledger link https://ledger.ainumbers.co/ so a human can re-verify without contacting us.
PII rule: All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.
Open the tool with the sample prefilled: https://ainumbers.co/chaingraph/art-356-compute-oprisk-sma-2026.html#p=v1.H4sIAAAAAAAA_wFcAKP_eyJpbGRjX2F2ZyI6MzAwMDAwMDAwLCJzY19hdmciOjE1MDAwMDAwMCwiZmNfYXZnIjo1MDAwMDAwMCwidXNlX3VzX2lsbV9uZXV0cmFsaXphdGlvbiI6dHJ1ZX1kBRHmXAAAAA