The Reserve Bank of Australia (RBA) is widely expected to raise the cash rate by 25 basis points this week, pushing it to 4.85 percent, a move nearly fully priced into market expectations. However, economists and financial markets appear reluctant to consider the possibility of further monetary tightening beyond this immediate hike, despite ongoing signals from RBA officials that higher rates may be necessary.

Currently, forward markets assign roughly a 50 percent chance of an additional 25 basis point increase by May 2027, yet many private-sector economists anticipate that the upcoming rise will mark the end of the tightening cycle. Analysts caution that this view may be overly optimistic, highlighting that Australia’s interest rates could climb well beyond 4.85 percent over the next two years as the central bank works to restore price stability.

The real short-term interest rate—the cash rate adjusted for inflation—would remain just above 1 percent even after the expected increase. With core inflation around 3.7 percent, the real rate remains historically low relative to Australia’s potential economic growth rate, estimated at about 2 percent annually. This potential growth rate reflects the underlying capacity of the economy, driven by labor supply growth and productivity gains.

Historical precedent suggests that to effectively contain inflation, the RBA may need to push real interest rates above the 2 percent growth threshold. During periods of significant inflation, such as under former RBA Governor Glenn Stevens, the real rate exceeded 3 percent alongside cash rates above 7 percent to successfully cool the economy and avoid recession. If core inflation remains around 3.5 percent, this could imply cash rates reaching approximately 6.5 percent, necessitating multiple further rate hikes.

Australia’s economic challenges are compounded by sustained government spending growth, which has outpaced private consumption in recent years. Over the past decade, federal government recurrent spending, excluding defense, has increased by an average of 6.7 percent per year after inflation adjustment, far exceeding the roughly 2 percent annual growth in household consumption. This shift has driven up the public debt burden and limited private sector expansion.

Despite inflationary pressures, government spending growth is projected to continue at about 3 percent in real terms in the current financial year. This persistent fiscal expansion restricts room for private sector growth and complicates the task faced by monetary policy. The RBA’s target is to achieve a reduction in inflation toward its goal, possibly requiring sustained economic growth at around 1.5 percent over 12 to 18 months, a scenario that leaves little flexibility if fiscal restraint is not implemented.

In this context, market observers foresee the RBA may need to raise the cash rate to at least 5.35 percent by 2027, and potentially higher if government spending does not slow. Failure to cool demand sufficiently through policy tightening risks prolonging inflationary pressures, making a real cash rate above 3 percent a plausible outcome in the medium term.