The Reserve Bank of Australia’s Index of Commodity Prices rose 5.5% year-on-year in September 2026, matching August’s increase. Gains were broadly based across most commodities, with the exception of iron ore, alumina and copper ore prices. In Australian dollar terms, the index rose 6.6% from a year earlier. On a monthly basis, commodity prices increased 1.3% in September in SDR terms, following a 0.3% rise in August. The rural, non-rural, and base metals subindices all increased during the month. In Australian dollar terms, the index went up 1.0% month-on-month in September.