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Itaú Unibanco capital ratio slides ahead of Brazil tax shift

Capital distributions drag CET1 lower as higher RWAs also bite

Itaú Unibanco reduced its Common Equity Tier 1 (CET1) capital ratio by 1.2 percentage points in the fourth quarter of 2025, marking its largest quarterly drop since Q1 2020.

The Brazilian lender ended the year with a CET1 ratio of 12.3%, its lowest level in two-and-a-half years. The bank’s CET1 capital declined 5.3% to BRL185.6 billion ($35.7 billion), while risk-weighted assets (RWAs) climbed 3.5

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