Australia 2026: Iron Ore Margins, the RBA Pivot, and the Housing Question

The macro setting and the commodity reset #

Australia closed 2025 with real GDP growth near 1.7 percent, headline CPI at 3.1 percent inside the Reserve Bank 2 to 3 percent target band, and unemployment of 4.3 percent on ABS labour force data. The terms of trade rolled over for the second consecutive year. Treasury projects a federal underlying cash deficit near 1.5 percent of GDP for 2025 to 2026, against the 0.3 percent surplus in 2022 to 2023, with the swing driven by softer iron ore receipts and stage 3 personal income tax cuts effective 1 July 2024.

The Platts IODEX 62 percent Fe assessment has spent the first quarter of 2026 in a 90 to 110 USD per tonne FOB China range. The Singapore Exchange iron ore swap curve trades at a 6 to 9 USD discount to spot through the second half of 2026. Treasury and the Resources and Energy Quarterly anchor multi year planning to a 60 USD per tonne long run price, well below the rolling five year average near 120 USD. Each 10 USD per tonne move is worth roughly 5 to 6 billion AUD in nominal export revenue and around 700 million AUD in company tax.

Iron ore producers and the Pilbara cost curve #

The four anchor Pilbara producers, BHP Western Australia Iron Ore, Rio Tinto Iron Ore, Fortescue, and Roy Hill, shipped a combined 1.13 billion tonnes in calendar 2025. BHP guided FY26 WAIO production of 282 to 294 million tonnes at C1 unit costs of 18.00 to 19.50 USD per wet metric tonne. Rio Tinto Pilbara guidance sits at 323 to 338 million tonnes with unit costs of 23.00 to 24.50 USD, reflecting Gudai Darri ramp and Western Range commissioning. Fortescue guided 190 to 200 million tonnes at C1 of 18.50 to 19.50 USD. Roy Hill, majority owned by Hancock Prospecting, shipped about 64 million tonnes. At a 95 USD realised price, FOB margins on the lowest cost Pilbara product remain above 60 USD per tonne.

The strategic question is no longer the cycle low but the structural ceiling. Vale guides toward 340 to 360 million tonnes by 2028 with S11D and Capanema. The Rio Tinto, Chinalco, and Guinea consortium expects Simandou first concentrate at the back end of 2026 ramping to 60 million tonnes by 2028. Argus models a base case in which 62 percent Fe spot averages 85 to 95 USD through 2026 to 2028 and high grade premiums for 65 percent Fe widen toward 18 to 22 USD. The Pilbara response is capex discipline, autonomous haulage, and a shift toward 65 percent Pilbara Blend variants.

Lithium retreat and the critical minerals pivot #

Spodumene 6 percent Li2O CIF China cleared 750 to 950 USD per tonne in the first quarter of 2026, against a 2022 peak above 8,000 USD. Talison Lithium has phased Greenbushes Train 4 commissioning, Albemarle has paused Wodgina expansion and idled Train 3, Covalent Lithium has slowed Mt Holland toward 70 percent of nameplate, and IGO has placed the Cosmos nickel asset on care and announced impairments on Kwinana hydroxide. Pilbara Minerals runs Pilgangoora at full plate but has trimmed strip ratios and deferred the P1000 stage. The Australian Financial Review and S&P Global Commodity Insights place 2026 Australian spodumene exports near 3.4 million tonnes lithium carbonate equivalent, roughly 8 percent below 2024 peak.

The federal response has shifted from price guarantees to capital allocation. The Future Made in Australia package legislated in 2024 carries a Critical Minerals Production Tax Incentive of 10 percent of processing costs from 2027 to 2040 and a Hydrogen Production Tax Incentive of 2 AUD per kilogram. Export Finance Australia has lifted its critical minerals window toward 4 billion AUD. Lynas Rare Earths has commissioned the Kalgoorlie cracking and leaching plant, Iluka has progressed the Eneabba refinery with a 1.65 billion AUD non recourse Commonwealth loan, and BHP Nickel West remains in suspension with reassessment in February 2027. Copper is the bright spot: BHP Olympic Dam guides toward 322,000 tonnes in 2026 and Oak Dam points to a possible second tier asset later in the decade.

Resource rent, fiscal arithmetic, and the PRRT debate #

Commonwealth resource taxation is structurally undercollecting. Treasury Australia identifies the Petroleum Resource Rent Tax as the chief design failure: PRRT receipts averaged 1.0 to 1.2 billion AUD across the second half of the 2010s on LNG export volumes that grew toward 80 million tonnes per annum. The 2023 MYEFO capped deductible expenditure at 90 percent of assessable receipts from 1 July 2023, lifting projected receipts by roughly 2.4 billion AUD over the forward estimates. The 48th Parliament is now considering a deeper PRRT review covering gas transfer pricing and a possible secondary tax for fields that have already recovered uplifted capital. Senate passage depends on the crossbench, where the Greens have demanded a higher headline rate and a windfall mechanism on iron ore profits above 100 USD per tonne, which the Albanese government has so far declined to put forward.

State royalties remain the more responsive lever. Western Australia applies its 7.5 percent fines and 5.625 percent lump royalty regime on iron ore. Queensland operates the progressive coal royalty introduced in 2022 with rates of 20, 30, and 40 percent on prices above 175, 225, and 300 AUD per tonne. The regime delivered 14.6 billion AUD in 2022 to 2023 and is expected to print closer to 6 billion AUD in 2025 to 2026 on softer pricing. The combination of falling iron ore receipts, weaker coal royalties, and the AUKUS Pillar 1 industrial program leaves Treasury with limited room to expand transfers without revisiting company tax or resource rent.

The RBA pivot and household debt #

The Reserve Bank of Australia took the cash rate from 4.10 percent in mid 2024 to a 4.35 percent terminal in November 2024, then began a measured easing cycle in February 2026, cutting twice to 3.85 percent. Sisyphus expects two further 25 basis point cuts across 2026 if trimmed mean inflation tracks inside 2.5 to 2.8 percent and unit labour costs slow. The Reserve Bank neutral nominal rate sits around 3.5 percent, leaving limited room before policy moves through neutral.

Household balance sheets remain the binding constraint. The Australian Prudential Regulation Authority retained the 3 percent serviceability buffer through the 2025 review, requiring banks to assess new mortgages at the contracted rate plus 300 basis points. The Reserve Bank Financial Stability Review identifies around 5 percent of owner occupier borrowers in negative free cash flow once essentials are deducted. New South Wales has pushed the major banks to formalise portfolio caps on flow above 6 times debt to income and loan to value above 95 percent. The Council of Financial Regulators has flagged that any return to pre 2022 underwriting will trigger a fresh macroprudential intervention.

Housing crisis and the political contract #

CoreLogic data place the Sydney median dwelling value above 1.6 million AUD as of March 2026, Melbourne near 940,000 AUD, Brisbane near 920,000 AUD, Perth near 820,000 AUD, and Adelaide near 800,000 AUD. The Sydney median equates to roughly 12.5 times median full time earnings. Net overseas migration peaked at 510,000 in 2022 to 2023 on ABS overseas arrivals and departures data and the Albanese government has guided FY24 net migration to 235,000 through student visa caps and tighter graduate work rights. Dwelling completions ran at roughly 175,000 in 2025 against a National Housing Accord aspiration of 1.2 million homes over five years to 2029, an annual run rate of 240,000.

The policy stack is broad but slow to bite. The Housing Australia Future Fund holds 10 billion AUD invested in Treasury Notes and longer dated Australian Government Securities, with returns above the cost of capital funding 30,000 social and affordable dwellings over five years. Help to Buy provides a Commonwealth equity contribution of up to 40 percent on new builds and 30 percent on existing homes for 40,000 income tested households. The Build to Rent measures lift the managed investment trust withholding concession to 15 percent for eligible developments. The binding constraints are construction labour, which the Master Builders Australia survey places 130,000 trades short, and trunk infrastructure, where local government rate capping continues to defer headworks investment.

Superannuation now sits at the centre of the intergenerational argument. The Superannuation Guarantee rose to 12.0 percent of ordinary time earnings on 1 July 2025, completing the legislated schedule. The Albanese government has retained the preservation age at 60 for the cohort born after 1 July 1964, and the Treasury Laws Amendment Better Targeted Superannuation Concessions Bill imposes a 30 percent earnings tax on balances above 3 million AUD from 1 July 2025. The Australian Financial Review has documented a widening conflict between asset rich retirees benefiting from full age pension means test exemptions on the family home and renter cohorts whose effective marginal tax rate including HECS HELP indexation, childcare withdrawal, and mortgage serviceability now sits above 50 percent across the 30 to 45 age band. The 2032 Brisbane Olympic capital envelope of 7.1 billion AUD on the 2024 Quirk review adds further pressure on Queensland trades.

Three scenarios for 2026 to 2028 #

The base case, at roughly 55 percent probability, sees 62 percent Fe iron ore averaging 90 to 100 USD through 2026, the cash rate moving to 3.35 percent by year end, and dwelling completions lifting toward 200,000 a year. Growth recovers to 2.2 percent in 2026 and 2.6 percent in 2027 as rate cuts pass through and migration normalises. The Pilbara four maintain combined production above 870 million tonnes, lithium spodumene capacity returns selectively as LCE recovers above 12,000 USD, and PRRT receipts settle near 3.5 to 4.0 billion AUD a year.

The upside case, at 25 percent probability, has Chinese steel mill restocking lift 62 percent Fe back into 110 to 130 USD through late 2026, the Reserve Bank holding at 3.85 percent rather than cutting further, and Senate passage of a deeper PRRT reform that lifts annual receipts toward 5.5 billion AUD. Lithium recovers on a Chinese inventory restock, Greenbushes Train 4 commissions on schedule, and the Olympic Dam copper expansion accelerates. House price growth moderates to mid single digits as Help to Buy take up and Build to Rent supply combine, but the Sydney affordability ratio does not improve meaningfully.

The downside case, at 20 percent probability, combines a Chinese property and steel demand contraction that takes 62 percent Fe toward 65 to 75 USD, a renewed lithium leg lower with Mt Holland and Wodgina extending care and maintenance through 2027, and labour market deterioration pushing unemployment toward 5.2 percent. The Reserve Bank cuts to 2.85 percent, the federal underlying cash deficit widens toward 2.5 percent of GDP, and the Albanese minority Senate dynamics constrain a fiscal response. House prices correct 8 to 12 percent in Sydney and Melbourne while regional Western Australia and Queensland hold up on mining wage stickiness. The actionable variables for institutional capital are 65 percent Fe high grade premiums, the Reserve Bank neutral rate path, and the political durability of the National Housing Accord supply target.

Sources #

• Reserve Bank of Australia Statement on Monetary Policy
• Australian Bureau of Statistics
• Treasury Australia Budget and MYEFO
• IMF Article IV Australia
• OECD Economic Survey Australia
• Department of Industry Science and Resources Resources and Energy Quarterly
• BHP Operational Review and Financial Results
• Rio Tinto Operations Review
• Fortescue Quarterly Production Report
• S&P Global Commodity Insights and Australian Financial Review