Given caller-supplied CET1/Tier 1/Tier 2 capital components and risk-weighted assets, computes FR Y-9C Schedule HC-R capital ratios — CET1, Tier 1, Total capital, supplementary leverage ratio (SLR) — plus the enhanced-SLR (eSLR) buffer, final and effective 2026-04-01, for top-tier bank holding companies (Y-9C panel: total consolidated assets ≥ $3B). Mirrors the Call Report Schedule RC/RC-R (ART-432/ART-433) ratio logic at the consolidated holding-company level. Consumes ART-435 Schedule HC as an upstream artifact.