Australian CPI at 3.5% revives RBA hike bets, squeezing AUD/USD shorts

Australian trimmed-mean inflation rose 0.5 percent month-on-month in July, reviving expectations the Reserve Bank will resume tightening and pushing bond yields higher while squeezing crowded AUD/USD short positions.

Minutes from the RBA's August meeting showed the Board actively considered raising the cash rate by 25 basis points before ultimately deciding to hold. Money markets had largely written off the chances of a September hike heading into Wednesday's report, but that assumption now deserves another look.

The monthly consumer price index rose 3.5 percent in the 12 months to July, down from 3.8 percent in June, with housing (+5.0 percent), food and non-alcoholic beverages (+3.2 percent) and recreation and culture (+2.6 percent) the largest contributors. Trimmed-mean inflation, the RBA's preferred underlying gauge, held at 3.6 percent year-on-year, unchanged from June. Australian bond yields jumped after the release, while renewed policy tightening risk added further pressure to elevated AUD/USD short positions. The US dollar index traded lower Tuesday, breaking a two-day retracement and forming a small shooting-star reversal candle around the 99 handle, while EUR/USD, GBP/USD and AUD/USD formed small bullish inside days.

The hot print complicates the RBA's path. All four major Australian banks — NAB, Westpac, Commonwealth Bank and ANZ — had forecast headline inflation to slow to between 3.2 percent and 3.3 percent in July, making the 3.5 percent reading a clear upside surprise. With underlying inflation stuck at 3.6 percent, above the RBA's 2-3 percent target band, markets now price a meaningful chance the central bank resumes hiking at its next meeting.

Rate Differentials Widen as RBA Bets Resurface

The repricing rippled through the currency market. AUD/USD shorts, which had built up as markets priced out tightening, bore the brunt of the squeeze as renewed hike bets forced leveraged funds to cover. The dollar's broader softness — the DXY broke below its two-day retracement around the 99 handle — added fuel to the move, with EUR/USD, GBP/USD and AUD/USD all forming small bullish inside days.

The RBA's dilemma mirrors a broader global divergence. While the Federal Reserve and European Central Bank have moved toward easing, the Reserve Bank of Australia and Bank of Japan have been outliers, with the BOJ raising its policy rate. The West Asia conflict has complicated the picture further, with energy price shocks threatening to reignite inflation across Asia and forcing central banks to weigh growth risks against price stability.

For Australia, the transmission is direct. Higher cash rates would lift mortgage costs for households already stretched by housing inflation running at 5.0 percent annually — the single largest contributor to the July CPI. That tension between sticky underlying inflation and household strain is precisely what the RBA's board weighed in August when it considered a 25-basis-point hike before holding.

September Meeting Looms as the Test

The RBA's next policy decision will be the immediate test of whether the market's renewed hike bets hold. If the board follows through on the tightening it considered in August, the AUD could extend gains against a broadly softer dollar, and Australian yields would push higher. If it holds, short positions that survived this squeeze may rebuild, and the currency could give back some of its gains.

The stakes extend beyond the currency. A rate hike would signal the RBA sees underlying inflation as too sticky to tolerate, potentially forcing households and businesses to absorb higher borrowing costs just as energy prices from the West Asia conflict feed through. For traders, the September decision now carries far more weight than it did a week ago, when markets had all but priced out another move.

This article is for informational purposes only and does not constitute investment advice.