Reserve Bank of Australia analysis shows AI data center funding has surged to a record $35 billion in 2026, setting an annual peak for infrastructure investment.

Australian data centre operators have raised a record $35 billion so far this year as the rapid buildout of AI infrastructure becomes an increasingly important driver of the country's business investment growth.

A new Reserve Bank staff note obtained exclusively by ABC News shows funding by Australian-focused operators has already surpassed the $24 billion raised across all of 2025—a 46 percent increase. The analysis covers Airtrunk, CDC, Firmus, Goodman, Macquarie Technology, Stack Infrastructure and Equinix subsidiaries, drawing on financing across syndicated lending, bonds, public and private equity as well as private transactions.

This year's funding is more than seven times the annual average recorded between 2020 and 2024, highlighting the accelerating pace of capital deployment in the sector. However, the rapid growth reflects a low base. Data centre operators still account for only 16 percent of funding raised by Australian "non-financial corporates" in the markets analysed.

RBA analyst Bradley Speed notes the $35 billion figure is conservative, as the data does not capture all single-bank loans and may miss some private transactions. This marks the first time an RBA analyst has estimated capital raised to build Australian data centres.

The RBA is tracking data centre financing because capital raises provide early signals of construction activity ahead. The note identifies funding as a "useful leading indicator for data centre investment in Australia," since local operators rely heavily on external capital for large construction programs. This matters to the central bank as the AI investment boom contributes to Australia's high inflation problem.

Building data centres requires substantial spending on construction, electrical infrastructure, skilled labour, and imported equipment such as advanced chips and servers. As the boom increases demand for workers and resources in an already stretched construction sector, those resources become relatively more expensive, adding inflationary pressure elsewhere in the economy.

RBA Governor Michele Bullock said this week that while AI investment was already adding to demand, there were "very few signs yet" that it was boosting the economy's supply capacity. "We've got this awkward sequencing event at the moment where, in Australia at least, we are in a situation of excess demand and the AI boom is adding to that demand ahead of any potential supply impacts that it might have going forward," she said. The governor also flagged that central banks globally were watching the risk of an AI investment bubble and the potential consequences if it unwound disorderly. "It might not be a bubble, but it might be," she said. The RBA's August meeting minutes showed the board had discussed the possibility of the AI and data centre investment boom becoming larger than anticipated, risking higher inflation.

The financing boom is being funded overwhelmingly through borrowed money. Debt accounts for 85 percent of new funding obtained by Australian data centre operators so far in 2026, slightly above US estimates of 60 to 80 percent. Syndicated lending—in which a group of lenders provides a single, often large loan—is the biggest source, accounting for about $25 billion this year, or roughly three-quarters of data centre financing in both 2025 and 2026 to date.

Syndicated loans are attractive for data centre buildout because they allow "greater loan sizes than with a single bank" and are generally "more accessible than the corporate bond market for firms without an investment grade rating." The sector is particularly suited to debt financing because operators often secure long-term customer leases, providing predictable cash flows, while real estate can be used as collateral. Australian operators have used bonds less than their US counterparts, though the note suggests funding sources could diversify as the sector expands.

A secondary concern is whether rapid AI-related fundraising could crowd out financing for other Australian companies. This concern has grown prominent overseas, particularly in the United States, where the scale of AI infrastructure investment has prompted worries that heavy tech borrowing could squeeze other borrowers. The backdrop is rising borrowing costs globally, with the benchmark US 10-year Treasury yield recently climbing above 5 percent—its highest level since 2007. Heavy AI-related borrowing increases demand for capital, though it is only one factor among several driving higher long-term borrowing costs.

The RBA note finds little evidence that similar pressures are emerging in Australia. Despite rapid growth in data centre financing, it remains small relative to Australia's broader funding markets. The note concludes there is little evidence the sector has materially affected financing conditions for other Australian borrowers.