Former television host David Koch has penned an open letter to the Reserve Bank of Australia (RBA) governor, Michele Bullock, urging her to clarify the government’s role in Australia’s persistent inflation and questioning why mortgage holders are expected to bear the brunt of rising interest rates. With major banks warning of impending rate hikes and financial markets anticipating further increases, millions of Australians are bracing for potentially higher mortgage repayments.
RBA Under Scrutiny Over Inflation Drivers
Koch, a prominent financial commentator, expressed concern that many Australians might be unfairly burdened with the costs of inflation they did not directly cause. He pointed to recent national accounts data showing economic growth exceeding forecasts, suggesting this growth was not primarily driven by household spending. Instead, Koch argues that significant contributions to this growth have come from increased government expenditure at both federal and state levels, coupled with expansion in the public sector workforce and associated wage increases.
“There’s an increasing likelihood a great many Australians are likely to be handed a bill they did not run up,” Koch stated in his letter. He implored the RBA board to scrutinize the origins of recent economic expansion before deciding on further rate adjustments, emphasizing that households have been acting cautiously.
Household Caution vs. Government Spending
Evidence cited by Koch suggests that household spending rose by a modest 0.4 per cent in the June quarter, while the household saving ratio climbed to 6.5 per cent. Concurrently, unemployment edged up to 4.5 per cent, consumer sentiment declined, and business conditions turned negative. These indicators, according to Koch, paint a picture of a cautious consumer sector, contrasting sharply with the robust growth attributed to public spending.
“So who did the growing? Government, and not by a little,” Koch asserted, referencing figures indicating Commonwealth government spending has reached 26.8 per cent of GDP – a level not seen outside of pandemic periods since 1986. He also noted that state government spending and public sector expansion are contributing factors.
Government-Influenced Prices and Inflation
Koch highlighted data from the Australian Bureau of Statistics, which he claims indicates that prices influenced by government policies have escalated more rapidly than market-driven prices. This category includes essential services such as childcare, education, healthcare, utilities, and insurance. He argued that a significant portion of the inflation the RBA is attempting to control stems not from consumer demand but from prices set, subsidized, regulated, or indexed by government bodies.
“In other words, some of the stickiest price pressure isn’t coming from shoppers splurging… it’s coming from prices governments set, subsidise, regulate or index,” Koch wrote. “Governor, that last point deserves emphasis. A meaningful slice of the inflation your board is trying to contain is not being generated in a shopping centre. It is being set in a cabinet room.”
The Burden on Mortgage Holders
The letter comes at a time when financial institutions like Commonwealth Bank, Westpac, and ANZ have alerted customers to the possibility of another interest rate increase. Financial markets are pricing in a strong likelihood of the RBA cash rate rising to 4.6 per cent by September 29, with further hikes anticipated in early 2025 and potentially later in 2027. This follows three previous rate rises this year, bringing the cash rate to 4.35 per cent.
Koch pointed out that interest payments now constitute 5.8 per cent of Australian households’ gross income, surpassing the previous peak of 5.7 per cent recorded in 1990, a period characterized by much higher mortgage rates. He argued that current borrowers face a heavier interest burden relative to their income than previous generations, despite the nominal interest rates being lower than in the past.
“Australians have absorbed three rate rises this year, taking the cash rate to 4.35 per cent. Interest payments now consume 5.8 per cent of household gross income… higher than the 5.7 per cent peak of 1990, when mortgage rates were near 17 per cent. Today’s borrowers are carrying a heavier interest burden than the generation we all cite as the horror story,” he stated. “Households complied. Governments didn’t seem to. Yet only one of those two gets the higher interest rate bill.”
Koch’s Proposed Solutions for the RBA
David Koch outlined four specific actions he believes the RBA should take:
- Transparency in Monetary Policy Statements: Publish an estimate within each Statement of Monetary Policy detailing the proportion of the cash rate attributable to government spending-fueled demand.
- Scenario Analysis: Show the projected cash rate if government spending had increased in line with GDP, rather than exceeding it.
- Fiscal Commitment: Require federal and state treasurers to sign a fiscal statement that commits to a public spending trajectory consistent with the RBA’s inflation target.
- Impact Communication: Clearly explain the specific impact of any potential rate rise on mortgage repayments for ordinary Australians.
Koch emphasized that if another rate hike is deemed necessary, the public deserves a clear explanation identifying the specific factors compelling the decision. “If the board must move on September 29, please do Australians the courtesy of naming who forced your hand,” he urged. “A rate rise won’t pump a single extra barrel, or fix a thing in the Middle East. It simply hits the same kitchen table twice.”
Economic Outlook and RBA’s Stance
The anticipation of further rate increases has been fueled by stronger-than-expected inflation data and recent remarks by RBA Governor Michele Bullock. In a recent appearance before the House of Representatives, Bullock indicated that while economic growth is slowing, some upside risks to inflation appear to be materializing. This commentary has been interpreted by some economists, such as AMP deputy chief economist Diana Mousina, as a signal that the central bank is preparing for a potential rate hike.
“I thought she sounded a little more overt in her discussion around inflation, noting that ‘developments since [the August board meeting] suggest that although growth in the Australian economy is slowing, some of these upside risks to inflation appear to be materialising’,” Mousina commented. “That sounds like a central bank preparing to raise rates at its next meeting.”
Koch’s letter seeks to shift the focus towards the fiscal policies that he believes are contributing significantly to inflationary pressures, arguing that a monetary policy response alone, which disproportionately affects households, may not be the most equitable or effective solution.


