National Australia Bank Limited

NAB's NII base is anchored by a loan book that has grown consistently, with Australian business lending up 9% in FY2025 and total cash earnings broadly stable across FY2021-FY2025. Recurring deposit and lending balances provide forward visibility, though NIM (1.74% in FY2025) fluctuates with RBA rate cycles and competitive pricing pressure.

Four distinct operating segments — Business and Private Banking, Personal Banking, Corporate and Institutional Banking, and New Zealand Banking — provide reasonable breadth across customer segments. Business and Private Banking is the largest contributor at roughly 40-45% of revenues, leaving the portfolio moderately concentrated without being extreme.

Revenue is predominantly sourced from Australia, with New Zealand banking as a secondary market and no material presence elsewhere. The two-country footprint leaves NAB heavily exposed to Australian economic conditions and RBA policy.

Australian banking requires ongoing capital deployment, compliance investment, and a substantial workforce, limiting structural operating leverage. Digital channels through ubank (which crossed 1 million customers) offer incremental efficiency, but per-unit cost savings are constrained by APRA capital requirements and the compliance overhead of a domestic systemically important bank.

NII derived from business and consumer banking relationships is mission-critical and recurs naturally as loans are repaid and re-drawn. SME customers with multi-product relationships generate sticky income, and the NIM-driven model is less discretionary than fee-based or capital-markets revenue.