National Australia Bank (ASX: NAB) — Investment Research Report

3-Year / 5-Year Price Scenarios

Base EPS: $2 — Approximate trailing statutory EPS: FY25 basic EPS A$2.21 plus 1H26 A$0.899 less 1H25 A$1.112. 1H26 cash earnings were A$2.639B, or A$3.588B excluding the A$949m after-tax software-capitalisation item; normalized earnings are therefore judgmental.

0. Information Richness & AI Limitations

Grade A (abundant). NAB is a major ASX-listed bank with audited reporting, detailed divisional disclosures, capital data and frequent market updates. Research confidence is high for the historical figures and business description, but investment certainty is lower: bank earnings depend on rates, competition, regulation and the credit cycle. The cutoff is 31 July 2026; the official NAB results calendar confirms FY25 published 6 November 2025 and 1H26 published 4 May 2026.

1. Data & Cross-Validation

The ASX company header returned A$41.635 on 31 July 2026, with market capitalisation of A$129.527B. Using that price and approximately 3,111M ordinary shares gives A$129.53B, a 0.00% reconciliation after rounding. The same ASX endpoint is the independent live-price source used by the freshness validator.

Primary reported financials (AUD): FY25 revenue from ordinary activities/net operating income A$20.813B, attributable statutory profit A$6.759B, basic EPS A$2.21 and total dividends A$1.70 per share. 1H26 revenue from ordinary activities was A$11.158B, attributable statutory profit A$2.750B, basic EPS A$0.899 and interim dividend A$0.85. 1H26 cash earnings were A$2.639B, but cash earnings excluding the disclosed A$949m after-tax large notable item were A$3.588B. The item was linked to a change in software-capitalisation policy, so statutory and adjusted measures must not be conflated. Sources: NAB 2025 Full Year Results Summary (6 Nov 2025) and NAB 2026 Half Year Results (4 May 2026).

2. Business Essence — Duan Yongping

One line: NAB gathers deposits and funds households and businesses through a regulated balance sheet, earning a spread and fees while converting scale, credit underwriting and customer relationships into recurring financial cash flow.

The customer value is access to payments, savings, mortgages, working capital and institutional finance. Deposits and transaction accounts are recurring, but pricing is not permanently fixed: customers can switch, wholesale funding competes with deposits, and loan demand follows the economy. Business and Private Banking is the strategic profit engine; Personal Banking provides scale; CIB and New Zealand diversify the franchise. Operating leverage is positive when volumes grow faster than costs, but banking has unavoidable technology, compliance, funding and capital costs.

3. Moat — Buffett

NAB's moat is scale plus regulation, not a consumer monopoly. A trusted brand, millions of customer relationships, a national branch/digital/payment infrastructure, deposit funding and decades of credit data create advantages. Prudential licensing, capital requirements and risk systems make entry difficult, while business-banking relationships and embedded treasury/payment workflows create switching friction.

The moat is durable but not widening dramatically. The major banks compete intensely on mortgage rates, deposits and digital experience; fintechs and non-bank lenders pressure selected products. NAB's best differentiator is its business-banking distribution and relationship depth. A Buffett-style test is passed on survival and franchise value, but not on unlimited pricing power: regulation and competition cap spreads.

4. Reverse Thinking & Risks — Munger

The historical analogy is a mature regulated bank: strong returns through a cycle, punctuated by occasional credit events and long periods of multiple compression. The key disconfirming evidence would be sustained growth in business lending and deposits with stable margins, provisions and customer outcomes. The bear case is not that NAB stops operating; it is that a normalised return on equity and payout deserve a materially lower multiple than today's price implies.

5. Management — Duan Yongping + Buffett

NAB's management has articulated three practical priorities: grow business banking, drive deposits and strengthen proprietary home lending. 1H26 delivered 5.6% Australian business-lending growth and 8.0% transaction-account growth excluding offsets, while the group increased forward-looking collective provisions by A$300m and reported a pro forma CET1 ratio of 12.05%. These are evidence of balance-sheet preparation rather than proof of superior returns.

Capital allocation is constrained by APRA, the credit cycle and the need to retain capital. The FY25 dividend was 170 cents per share, and the 1H26 interim was 85 cents, both fully franked. The software-capitalisation policy change in 1H26 shows why investors should scrutinise accounting policy and adjusted earnings. Management quality is adequate-to-good, but the institution's resilience matters more than any individual CEO.

6. Industry & Civilizational Trend — Li Lu

Banking is foundational plumbing for commerce: payments, deposits and credit remain essential to households and enterprises. Australia's large-bank industry is mature, concentrated and tightly regulated, so the total addressable market grows mainly with nominal GDP, housing turnover, business formation and financial complexity rather than a revolutionary new market.

Technology will change the delivery layer through mobile banking, automation and AI, but it does not remove the need for trusted deposits, settlement and risk-bearing capital. It may lower costs while increasing cyber, model and conduct risks. NAB sits near the centre of the value chain, but regulation and competition ensure much of the productivity benefit flows to customers rather than shareholders.

7. Valuation & Scenarios — Buffett + Duan

At A$41.635, the approximate trailing statutory EPS of A$2.00 implies 20.85x P/E and the A$1.70 FY25 dividend implies a 4.08% cash yield. For a mature, capital-intensive bank exposed to credit and margin cycles, that is a full price. The valuation assumes no severe credit event, broadly stable payout capacity and a return on equity that remains attractive.

Three-year: Bull A$60.20 (25% probability), base A$37.10 (50%), bear A$15.90 (25%), for a probability-weighted target of A$37.58, or -9.7% before dividends. Five-year: Bull A$53.50 (25%), base A$37.10 (50%), bear A$14.60 (25%), weighted A$35.58, or -14.5% before dividends. These targets apply scenario EPS growth and terminal P/E assumptions to the A$2.00 base EPS; they are calculations, not forecasts. Dividends could materially improve total returns, but payout depends on capital and regulatory conditions. The main uncertainty is normalised EPS after 1H26's disclosed large notable item and through-cycle credit losses.

8. Decision Memo

Decision: Hold/watch: existing holders can collect the dividend while monitoring asset quality and margins, but new capital should wait for a better entry zone of A$33–37 or clearer evidence that earnings growth is durable. Add on a pullback with CET1 intact and stable provisions. Sell or reduce if arrears, provisions, funding pressure or regulatory capital needs invalidate the payout thesis. This is an educational analysis, not personalised financial advice.

Four-Master Commentary (Analytical Simulations)

The following are analytical simulations, not real quotations.

Buffett: A large bank can be a good business when deposits, trust and underwriting scale produce durable economics. But I want a margin of safety because a bank's balance sheet can look safe until the credit cycle turns.

Munger: Invert it: margin compression, bad loans, conduct costs and excess capital can all reduce the value of a seemingly stable dividend. At 20x normalised earnings, the price leaves little room for an adverse surprise.

Duan Yongping: The franchise and business-banking relationships are valuable, and management is focusing on the right priorities. I would prefer the right business at A$33–37 rather than paying a premium for a benign cycle.

Li Lu: Banking is part of civilization's financial infrastructure, but technology and regulation determine who captures the returns. NAB can compound modestly; a high starting valuation and a credit shock can still dominate five-year outcomes.