TLDR
US consumer prices rose 3.4% over the year to August 2026, keeping a Fed rate cut off the table under Kevin Warsh and lifting Wall Street. The Australian Securities Exchange (ASX) opened higher Monday after last week's $32 billion sell-off. The Reserve Bank of Australia (RBA) meets 28-29 September, with every offshore rate reading now directly relevant to Australian borrowers.
KEY TAKEAWAYS
Wall Street's logic: hot inflation is good news, for now
The US Bureau of Labor Statistics confirmed on 11 September that the Consumer Price Index for All Urban Consumers increased 0.4 percent on a seasonally adjusted basis in August 2026 and rose 3.4 percent over the last 12 months.[1] That puts annual inflation 70 basis points above the Federal Reserve's 2% target. A rate cut from Kevin Warsh's Fed is now off the table.
Wall Street found something to like in that. A Fed chair willing to hold rates until inflation submits is one reducing the tail risk of a policy mistake, and equity markets priced that in. Futures pushed higher into Monday's session, pulling the ASX up with them.
The ASX: context on last week's $32 billion fall
The S&P/ASX 200 closed August at 9076.0, then gave back roughly $32 billion across last week before Monday's partial recovery.[3] Monday's bounce frames the week's damage rather than erasing it. The index remains in a range that reflects genuine uncertainty about where Australian rates settle through year-end.
Underneath the index moves, the market stayed busy. ASX Limited reported that in August 2026, the average daily value traded on-market of $7.927 billion was up 11% on the pcp.[4] Elevated turnover during a volatile month means investors are repositioning, not sitting on their hands.
What 4.05% on the 10-year means for the RBA
The 10-year US Treasury yield sat at 4.05% on 11 September 2026.[2] Australian bond pricing does not happen in a vacuum. When the world's deepest sovereign debt market yields 4.05%, the floor for Australian long-term rates shifts up alongside it.
The RBA cannot cut aggressively into a world where US rates stay elevated without putting downward pressure on the Australian dollar and importing more inflation through higher import costs. Ask 'and then what?' and the answer gets uncomfortable quickly.
The RBA's Monetary Policy Board meets on 28-29 September 2026, with its decision statement due at 2:30 pm AEST on 29 September.[5] Between now and then, the dominant input is the offshore rate picture: whether the Fed softens its tone, and whether the 10-year Treasury holds at 4.05% or moves further.
Australian mortgage holders repricing fixed-rate loans in Q4, and businesses locking in capital costs for the new financial year, are watching the same number. A Fed that holds leaves the RBA with less room to move. The 29 September decision statement will be the clearest read yet on how the board is weighing that constraint.
SOURCES & CITATIONS
FREQUENTLY ASKED QUESTIONS
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James Dore is founder and editor of Prompt the Market and Strategy Director at Bushnote, a Sydney strategy, SEO and AI search agency. He has a background in strategy, media and financial services, and led consumer product marketing at MONEYME. He writes on AI search, answer engines, technology policy and media economics.
Important
This article contains general financial information only and does not constitute financial advice. It is not personal financial advice and has not been prepared taking into account your personal objectives, financial situation or needs. Before making any financial decision, you should consider whether the information is appropriate for your circumstances and consider seeking professional financial advice. Past performance is not indicative of future performance.
