
Westpac vs National Australia Bank shares: Which big bank could be the better buy?
If you’re weighing up Westpac Banking Corp (ASX: WBC) against National Australia Bank Ltd (ASX: NAB), you’re not alone. These two stalwarts sit among the ‘big four’ and anchor many Aussie portfolios and super funds. Their sheer size and history make both popular for long-term income seekers, but subtle differences in dividends, valuation and recent price momentum could tip the scales if you’re looking for a potential edge.
The case for Westpac
Westpac is Australia’s oldest bank, dating all the way back to 1817. Today, it holds one of the largest footprints of any financial institution in the country with a range of consumer, business and wealth banking brands including St.George, Bank of Melbourne, BankSA and BT. Westpac provides everything from mortgages and deposits to institutional banking.
Three fundamentals stand out for me:
- Dividend yield: 4.49% with 100% franking, making it attractive for income-focused investors, especially those seeking tax-effective payouts.
- P/E ratio: 16.91, putting Westpac at a lower valuation than NAB on this simple metric.
- Earnings per share: $2.029, marginally higher than NAB’s reported figure.
Dividend stability and a long track record add to Westpac’s appeal. According to its most recent public description, Westpac remains one of the top listed companies on the ASX, backed by diversified operations across both retail and institutional markets.
The case for National Australia Bank
NAB is another giant, tracing its present structure to 1982 and serving millions across Australia and New Zealand, with international outposts in the UK, the US and Asia. It delivers a similar suite â home loans, business banking, wealth management â with a significant focus on both domestic and overseas growth.
Here are its key drawcards:
- Dividend per share: $1.70, higher than Westpac’s $1.54 (as per the latest data), and also fully franked.
- Market cap: $119.71 billion, fractionally above Westpac and suggesting slightly more investor confidence in the current climate.
- Dividend yield: 4.42% â only a whisker below Westpac’s but with a higher absolute dividend payment per share.
NAB’s broader international exposure and a reputation for steady payouts, as reinforced by its company profile, cement its spot at the top end of the ASX.
Valuation comparison
Let’s put the most relevant metrics head-to-head:
| Westpac | NAB | |
|---|---|---|
| Market Cap | $117.80b | $119.71b |
| P/E Ratio | 16.91 | 19.25 |
| Dividend Yield | 4.49% | 4.42% |
| Dividend per Share | $1.54 | $1.70 |
| EPS | $2.029 | $2.000 |
| Franking | 100% | 100% |
Westpac currently trades at a lower P/E multiple than NAB, meaning you’re paying a little less per dollar of reported earnings. The dividend yields are close (Westpac higher by 0.07 points), but NAB’s dividend per share is larger. EPS is almost neck and neck. Note: NAB’s higher dividend payout versus similar earnings per share could indicate either a higher payout ratio or greater profit stability â but payout ratios themselves weren’t in the data provided for this comparison.
Recent share price momentum
Comparing recent share price performance up to I’ll use 5 October 2026:
- Westpac: Closed at $34.44 as of 5 October 2026, finishing the day 0.35% higher.
- NAB: Closed at $38.40 on the same date, registering a 0.26% intraday dip.
- Year to date: Westpac is down -9.1% YTD, while NAB has dropped -7.0% over the same period.
Both banks have had a soft year, but NAB’s share price has held up a touch better so far in 2026.
Which is the better buy?
Both Westpac and NAB offer strong brand power, broad services and full frankingâa trio of traits most Aussie income investors prize. If what you want is a slightly higher yield and lower valuation, I think Westpac edges ahead, especially if you believe the market is being too harsh with its recent price drop. Its P/E ratio undercuts NAB by a useful margin, and with a fully franked yield, that’s a handy combo for value-conscious portfolios.
On the other hand, NAB’s larger dividend payment and slightly lower share price volatility this year are also hard to ignore. But paying a higher P/E for almost the same underlying earnings and yield doesn’t sway me. For my money, I’d lean toward Westpac for its blend of yield and comparative valuation at current pricesâwhile fully acknowledging that the margin is slim, not overwhelming. Ultimately, both are formidable blue-chip foundations, but in a straight shootout based on the latest numbers, my pick would be Westpac.
The post Westpac vs NAB shares: Which big bank is the better buy? appeared first on The Motley Fool Australia.
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Motley Fool contributor Laura Stewart has no position in any of the stocks mentioned. The Motley Fool Australia’s parent company Motley Fool Holdings Inc. has no position in any of the stocks mentioned. The Motley Fool Australia has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Scott Phillips. This article was prepared with the assistance of Large Language Model (LLM) tools for the initial draft. Any content assisted by AI is subject to our robust human-in-the-loop quality control framework, involving thorough review, substantial editing, and fact-checking by our experienced writers and editors holding appropriate credentials. The Motley Fool Australia stands behind the work of our editorial team and takes ultimate responsibility for the content published by The Motley Fool Australia.

