National Australia Bank's (ASX:NAB) total capital and Common Equity Tier 1 (CET1) capital both increased year over year in the March quarter, according to a Monday Australian bourse filing.

The bank's total capital in the three months to March came in at AU$91.97 billion, up from the AU$89.62 billion it reported in the year-ago period. Its CET1 capital for the period clocked in at AU$52.39 billion, rising from the AU$51.24 billion it reported for the March 2025 quarter.

Its Level 1 Group CET1 ratio for the March quarter was 11.5%, compared with a ratio of 11.8% in the prior-year period. It reported a liquidity coverage ratio of 132% for the quarter, compared with 139% in the same period in the previous year.