Markets Price 80% Chance of Third RBA Rate Hike as Inflation Peaks at 4.6%

Context The Reserve Bank of Australia (RBA) meets on Tuesday to set the cash rate, the benchmark that influences mortgage interest, business loans and savings yields. Traders watch the RBA’s decision through the ASX200 index (ticker ^AXJO), which slipped 0.4% after the latest inflation data. The market’s implied probability of a hike comes from the RBA futures contract on the Chicago Mercantile Exchange (ticker RBAH2024), which now trades at a price reflecting an 80% chance of a 25 basis‑point increase.

Key Facts - Inflation for the year to March rose to 4.6%, the highest level since mid‑2023, driven largely by a 30% jump in petrol prices linked to the Middle East conflict. - The RBA’s cash rate sits at 4.35% after a 25‑basis‑point lift in March, a decision that passed by a narrow 5‑to‑4 vote. - The Australian dollar (AUD) fell 0.7% against the US dollar (USD) after the data release, pushing its market cap to roughly AU$1.2 trillion. - Deutsche Bank chief economist Phil O’Donaghoe warned that monetary policy cannot curb inflation over the next six months because oil prices dominate the price picture. - RBC Capital Markets’ macro strategist Robert Thompson noted that inflation was already “uncomfortably high” before the recent geopolitical shock, and the RBA’s toolset is limited to rate adjustments.

What It Means If the RBA raises rates again, the immediate effect will be higher borrowing costs for the 3.6 million Australian households with variable‑rate mortgages. A 25‑basis‑point hike would lift the average 30‑year mortgage rate by roughly 0.2 percentage points, increasing monthly payments by about AU$30 on a AU$300,000 loan. For investors, higher rates typically depress equity valuations; the ASX200’s market‑cap‑weighted constituents could see an additional 0.5% pullback as cost‑of‑capital expectations rise.

The rate decision also signals the RBA’s stance on inflation expectations. By tightening, the board aims to convince wage‑setters and price‑makers that it remains committed to the 2‑3% target band, even if the current price surge stems from external oil shocks. Should the hike occur, analysts will watch credit spreads on Australian corporate bonds (e.g., BHP Group ticker BHP) for signs of stress, and monitor the AUD/USD pair for any reversal in the recent depreciation.

Looking Ahead All eyes will turn to Tuesday’s announcement and the subsequent movement in RBA futures, which will set the tone for Australian monetary policy through the rest of the year.