RBA rates, AI data centres, and plasma margins: Read your August 2026 reporting roadmap for ASX heavyweights CSL, Telstra Group and Goodman Group.
Australia’s banking reporting season is approaching, and while the financial sector may appear relatively calm on the surface, the numbers underneath tell a more complicated story.
The S&P/ASX 200 Financials Index remained resilient through the middle of 2026, but headline stability can obscure what is happening bank by bank. Net interest margins (NIMs) are beginning to separate the stronger performers from the laggards, and that divergence matters because deposit competition remains intense while discounts across retail lending continue to pressure profitability.
This means the August reporting period will be about more than whether the Big Four banks meet their headline estimates. Commonwealth Bank of Australia (CBA) will report its full-year 2026 (FY26) statutory results, while Westpac Banking Corporation (Westpac), ANZ Group Holdings (ANZ) and National Australia Bank (NAB) will provide third-quarter (Q3) trading updates.
The format may differ, but the underlying questions are closely connected. Are household bad debts beginning to rise? Is stress appearing across small and medium-sized enterprise (SME) portfolios? And, perhaps most importantly for shareholders, will excess Common Equity Tier 1 (CET1) capital be returned through dividends or buybacks?
With sector valuations still anchored by CBA’s premium forward multiples, even a solid result may not be enough on its own. What could matter more is whether the banks can defend margins, contain credit losses and demonstrate that their capital positions remain strong.
Australia’s earnings season is here
Track the key dates, sectors and signals shaping ASX results.
The big picture
Headline macroeconomic conditions affect every major company, but they flow through each business differently. Pricing power matters. Leverage matters. Cost control matters. The strength of the underlying business model can determine whether a difficult environment merely slows growth or starts to squeeze profitability.
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1Goodman Group (ASX: GMG)
For an asset-heavy structural-growth business such as Goodman, the cost of capital sits squarely in the conversation. Renewed increases in property capitalisation rates, or cap rates, could pressure valuations, although Goodman reported in its March-quarter update that cap rates had stabilised across most regions.
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2CSL Limited (ASX: CSL)
CSL faces a different equation. For some time, the discussion around CSL Behring was about getting its segment gross profit margin back towards 50%. Now that the margin reached 51.2% in the first half of FY26, the question has changed. Getting there mattered, but staying there while managing policy changes, restructuring, competitive pressures, impairments and currency movements may be the more consequential test.
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3Telstra Group (ASX: TLS)
Then there is Telstra, where mobile continues to do much of the heavy lifting while parts of the enterprise business remain under pressure. Its first-half result showed continued mobile momentum and the company tightened FY26 underlying EBITDAaL guidance to A$8.2 billion to A$8.4 billion. The full-year result may show whether higher mobile yield and cost discipline are doing enough to offset weaker areas of the portfolio.
Company and sector spotlight
The three featured major caps represent distinct sectors, meaning their results need to be assessed using different operating measures. Rather than relying on unpublished broker consensus figures, the reference points below use each company’s latest publicly disclosed results and guidance.
Telstra Group Limited
ASX code: TLS • Report date: Thursday 13 August 2026 • Period: FY26 annual resultMobile remains the strongest part of the Telstra story. Postpaid handheld average revenue per user (ARPU) has increased, while management has narrowed its FY26 underlying earnings before interest, tax, depreciation and amortisation after leases (EBITDAaL) guidance and maintained its Cash EBIT guidance.
The full-year result will show whether that mobile strength, together with continued cost discipline, is enough to offset weakness in Fixed Enterprise. Investors will also be watching for signs that Telstra’s broader portfolio is becoming more balanced.
Mobile ARPU and service revenue, the enterprise reset, InfraCo performance and operating cost discipline.
Sustained mobile service revenue growth, combined with continued cost discipline, may support delivery within management’s stated FY26 guidance range.
Continued income weakness in Fixed Enterprise or persistent cost inflation could weigh on operating margins.
CSL Limited
ASX code: CSL • Report date: Tuesday 18 August 2026 (Webcast 10:00 am AEST) • Period: FY26 annual resultFor some time, the key question for CSL Behring was whether its segment gross profit margin could recover towards 50%. After reaching 51.2% in the first half of FY26, the focus has shifted to whether that improvement can be maintained.
On 11 May, CSL revised its FY26 outlook to revenue of around US$15.2 billion and net profit after tax before amortisation (NPATA) of around US$3.1 billion, both at constant currency. The NPATA figure excludes restructuring costs and impairments.
This revised outlook replaced the percentage-growth guidance issued with CSL’s February half-year result. That means the August result will now be judged against these updated targets, as well as trends in immunoglobulin (Ig) demand, albumin conditions in China, new product growth, operational efficiencies and progress on the broader transformation program.
Delivery against the revised FY26 outlook, the durability of CSL Behring’s margin improvement, Ig demand, albumin conditions in China, new product momentum and progress on the transformation program.
Continued underlying Ig demand, new product growth, operational efficiencies and sustained margin discipline could support delivery against CSL’s revised FY26 outlook.
US Ig channel inventory normalisation, albumin pricing pressure in China, competition, policy changes, restructuring costs, impairments or adverse currency movements could constrain earnings delivery. CSL identified US Ig inventory normalisation, the China albumin market and other market factors as contributors to its May guidance revision.
Goodman Group
ASX code: GMG • Report date: Thursday 20 August 2026 • Period: FY26 annual resultAt 31 March 2026, data centres accounted for 73% of Goodman’s A$14.5 billion in development work in progress (WIP). The company also expected total WIP to reach about A$18 billion by June 2026.
Goodman’s global data centre power bank included 3.6 GW of secured power and another 2.8 GW in advanced procurement. Of that pipeline, 0.4 GW of data centre power was already in WIP.
The distinction is important. A large power pipeline shows future development potential, but it is not the same as having projects under construction or assets already generating earnings.
For FY26, Goodman is targeting 9% growth in operating earnings per security (operating EPS) and a distribution of A$0.30 per security. In its third-quarter update, management said the business remained on track to deliver at least 9% operating EPS growth, provided there was no material deterioration in market conditions or other unforeseen events.
Operating EPS against the 9% target, additional secured power, development WIP, customer commitments, funding and progression of the pipeline into contracted projects.
Further conversion of the power bank into secured power, WIP and customer commitments could support development momentum.
Construction costs, funding conditions, slower customer commitments or renewed cap rate expansion could affect development economics or property valuations.
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What has changed since the last set of results?
Sometimes the easiest way to understand reporting season is not to ask, ‘What is the result?’ but, ‘What has changed since we last checked?’
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1CSL: Behring margin is above 50%
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2Telstra: mobile strength sits alongside enterprise pressure
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3Goodman: the data centre pipeline has continued to expand
What to watch next
The useful thing about August is that the major events arrive almost one after another, which means the monetary-policy backdrop will be established before the three company results begin landing. Traders tracking key earnings dates across other market sectors can explore the complete ASX reporting season calendar.
Telstra FY26 result
Mobile ARPU, enterprise execution and cost discipline.
CSL FY26 result
Revised guidance, Behring margin durability and operating outlook.
Goodman Group FY26 result
Data centre WIP, power pipeline and FY27 operating outlook.
Bottom line
On the surface, this reporting season is about three major companies and three sets of earnings numbers, but underneath sits a broader question about how effectively some of Australia’s market leaders are navigating higher interest rates, margin discipline and the push towards higher-margin growth.
The numbers will differ because the businesses are different, but the underlying test is similar: what is genuinely strengthening, what is still being carried by another part of the business and, once the headline number is out of the way, what can management credibly say happens next?
Disclaimer: Articles are from GO Markets analysts and contributors and are based on their independent analysis or personal experiences. Views, opinions or trading styles expressed are their own, and should not be taken as either representative of or shared by GO Markets. Advice, if any, is of a ‘general’ nature and not based on your personal objectives, financial situation or needs. Consider how appropriate the advice, if any, is to your objectives, financial situation and needs, before acting on the advice.
