Sydney, June 30, 2026, 02:04 AEST
- National Australia Bank Limited ASX:NAB ended up 1.01% at A$37.89, beating gains for both the S&P/ASX 200 and the ASX 200 Financials index.
- Suspected fraudulent home loans at five major banks have hit A$4 billion, according to estimates. NAB wants a national plan to fight economic crime.
- The industry number is 3.4% of NAB’s market cap and about 5.7 times its recent half-year credit impairment charge.
- NAB’s own home loan drawdowns climbed to 47.7%, up from 41.4%. The mix is worth watching as there’s more focus on external agents.
National Australia Bank Limited ASX:NAB rose 1.01% to A$37.89 on Monday, edging out the other big four banks, even after it issued a new mortgage-fraud warning. The S&P/ASX 200 (INDEXASX:XJO) was up 0.68% to 8,823.40. The S&P/ASX 200 Financials index (INDEXASX:XFJ) climbed 0.75% to 9,310.50.
NAB finished 33 basis points ahead of the main market and 26 points above the broader financial index. The shares still ended 23.4% under their 52-week high at A$49.45 and 6.8% above the 52-week low at A$35.48. The stock remains well below last year’s top, even with Monday’s rise.
NAB warned on June 27 that mortgage fraud is getting more advanced, saying it has reported several cases to authorities and cut ties with or suspended certain brokers and others. The bank said risks link to brokers, real estate agents, lawyers, accountants and conveyancers. NAB also called for a national economic crime plan to support industry action.
Australia’s five biggest banks are looking at as much as A$4 billion in mortgage fraud across homes in the country, News.com.au said Monday, citing The Australian. NAB investigations executive Chris Sheehan told the outlet, “Industry efforts alone are not enough.” News
NAB finished Monday ahead of its peers and both benchmarks.
| Instrument | Last | One-day move |
|---|---|---|
| National Australia Bank Limited ASX:NAB | A$37.89 | up 1.01% |
| Commonwealth Bank of Australia ASX:CBA | A$163.61 | added 0.98% |
| ANZ Group Holdings Ltd ASX:ANZ | A$35.20 | rose 0.46% |
| Westpac Banking Corp ASX:WBC | A$35.24 | up 0.28% |
| S&P/ASX 200 (INDEXASX:XJO) | 8,823.40 | gained 0.68% |
| S&P/ASX 200 Financials (INDEXASX:XFJ) | 9,310.50 | added 0.75% |
The A$4 billion number comes from industry estimates, not NAB’s official loss tally. But it’s still a key figure for investors because it stands out compared to NAB’s recent earnings and its credit buffers. The table below lines that up with NAB’s current A$116.23 billion market cap, half-year cash earnings of A$3.588 billion before major one-time items, and a A$706 million first-half credit impairment.
| Yardstick | NAB data point | A$4 bln industry estimate against it |
|---|---|---|
| Market value | A$116.23 bln | 3.4% |
| 1H26 cash earnings, excluding large notable items | A$3.588 bln | 1.1 times |
| 1H26 credit impairment costs | A$706 mln | 5.7 times |
| 1H26 forward-looking provision add | A$300 mln | 13.3 times |
Channel mix is flying under the radar. NAB said in May that proprietary home-loan drawdowns made up 47.7% in the first half, up from 41.4% in the back half of 2025. So the non-proprietary share dropped to 52.3% from 58.6%. NAB didn’t tie the May numbers to its later fraud disclosure, but the shift matters because the fraud update did name outside professionals in the risk list.
NAB’s capital position drew attention in the market. The bank posted a common equity tier 1 ratio of 11.65% at March 31. NAB said its dividend reinvestment plan discount and partial underwriting will push the pro-forma CET1 ratio up to 12.05%, clearing its 11.25% target. NAB added A$300 million to forward-looking provisions and said total provisions are now at 1.68% of credit risk-weighted assets.
NAB CEO Andrew Irvine said at the half-year that the bank is “well placed to navigate a period of increased volatility.” The more immediate issue is whether tighter mortgage checks, fraud controls and broker oversight could make it harder for NAB to reach its 2026 productivity target of over A$450 million, or to keep cost growth below 4.6% when excluding big one-offs.
The sector is still tight. Morgan Stanley took a cautious view on the big Australian banks on Monday, pointing to risks for fiscal 2027 earnings tied to a slower mortgage market, more competition and weaker credit quality, MarketIndex said. Reuters reported in May that Morgan Stanley analyst Richard Wiles noted, “operating conditions for banks have shifted so quickly,” after rate hikes and changes to housing policy hit the sector. Market Index
Rates are another factor. The Reserve Bank of Australia holds its cash-rate target at 4.35% as of June 17, following three hikes in 2026. The next policy decision is set for Aug. 11.
