The bill that Treasurer Jim Chalmers called "a victory for workers, first home buyers and future generations"[6]Controversial CGT changes clear both houses of parliament“Chalmers 'victory for workers, first home buyers and future generations' quote; bill details on passage June 25” does not say what a "new build" is. That is not a semantic complaint. It is the central legal problem with Australia's largest tax overhaul since 1999, which cleared both houses of Parliament on June 25, 2026, by 98 votes to 39[3]CGT, negative gearing changes clear final hurdle“Bill ratified by the House of Representatives on June 25 by 98 votes to 39; Treasury confirmed 85% of $3.6bn revenue from negative gearing restrictions; COSBOA warning quoted” as Coalition senators cried "shame" and Labor members cheered. The Treasury Laws Amendment (Tax Reform No. 1) Bill 2026[4]Treasury Laws Amendment (Tax Reform No.1) Bill 2026 — Parliament of Australia“Bill digest for Treasury Laws Amendment (Tax Reform No. 1) Bill 2026” is now law — incomplete in its most commercially critical term, amended at the last minute with a self-managed super fund lending ban that was never in the original budget, and passed on a day when the Australian Bureau of Statistics[9]Consumer Price Index, Australia, May 2026“Headline CPI 4.0% to May; trimmed mean 3.6% (up from 3.4%); monthly CPI fell 0.7%; automotive fuel fell 11.9% in May” published inflation data the government conspicuously did not address at its victory press conference.
On the same day Parliament voted, trimmed mean CPI — the Reserve Bank's preferred core measure — rose to 3.6 per cent for the year to May, up from 3.4 per cent in April, the highest reading since September 2024 and above market expectations of 3.5 per cent[9]Consumer Price Index, Australia, May 2026“Headline CPI 4.0% to May; trimmed mean 3.6% (up from 3.4%); monthly CPI fell 0.7%; automotive fuel fell 11.9% in May”. Australia is tightening its investor tax screws into an economy already running a fever.
What was inserted at the last minute?
The bill the Senate voted on was materially different from the bill Labor introduced on May 28. Three days before the vote, the Greens extracted a prohibition on SMSF limited recourse borrowing arrangements (LRBAs) for residential property as the price of their Senate votes. Senator Nick McKim moved Senate Amendment 3886, which inserts a new condition into subsection 67A(2) of the Superannuation Industry (Supervision) Act 1993 requiring that any real property acquired by an SMSF under an LRBA be business real property[1]SMSF Borrowing Banned: What the Labor-Greens LRBA Deal Means for You“Senate Amendment 3886 by McKim inserts new condition into SIS Act s67A(2) — residential LRBA ban with business real property exemption”. Residential property does not qualify. New residential SMSF loans under LRBA structures will be blocked 45 days after royal assent[5]Negative gearing, CGT reforms pass Parliament“Bill passed both houses June 25; SMSF LRBA ban 45 days after royal assent; 680,000 co-owned properties widow's tax; Gallagher quote on subsequent legislation”; existing facilities are grandfathered, and commercial and business real property LRBAs are preserved.
This amendment was not in the original budget measure, not within the Senate Economics Legislation Committee's terms of reference, and not subjected to standalone economic modelling. It imposes a 45-day implementation cliff on one of the SMSF sector's core lending products with almost no effective notice.
We've won an amendment to close the exemption for SMSFs from not being able to borrow to fund investments.
Senator Barbara Pocock, Australian Greens
Pocock's celebration is the sector's shock. The Greens also stripped the Treasurer's regulatory power to expand the 50 per cent CGT discount or designate new asset classes eligible for negative gearing via regulation[8]Negative gearing and CGT bill pass parliament“Greens removed Treasurer's regulatory power to expand CGT discount or designate negative gearing asset classes”. The government, in its rush to legislate before the July 2 recess, handed the Greens a permanent veto over future flexibility. Any course-correction now requires a Senate majority.
What is still missing from the law?
From July 1, 2027, negative gearing for residential investment properties will be restricted to "new builds." The word "new build" does not appear with a legally binding definition in the act Parliament just passed. The government will implement the definition via a future legislative instrument — but no draft language has been released. Investors face a legal category whose precise meaning does not yet exist in law.
More troubling is the co-ownership flaw. About 680,000 properties jointly owned before budget night could lose their grandfathered CGT and negative gearing protections if a co-owner died or the couple divorced[5]Negative gearing, CGT reforms pass Parliament“Bill passed both houses June 25; SMSF LRBA ban 45 days after royal assent; 680,000 co-owned properties widow's tax; Gallagher quote on subsequent legislation”. Finance Minister Katy Gallagher acknowledged the problem on June 25, promising "we intend to address these, the arrangements for jointly owned assets in circumstances like inheritance, or divorce, in subsequent legislation"[5]Negative gearing, CGT reforms pass Parliament“Bill passed both houses June 25; SMSF LRBA ban 45 days after royal assent; 680,000 co-owned properties widow's tax; Gallagher quote on subsequent legislation”. Parliament has enacted a law with a known material flaw affecting hundreds of thousands of Australians, and the fix will itself require fresh Senate negotiation.
The startup concession — framed as a carve-out for innovative businesses — also lacks final eligibility criteria. Consultation on the Innovative Business CGT Concession closes July 10[2]CGT, negative gearing reforms to pass after Labor secures Greens support“Greens backed the package subject to amendments and NDIS inquiry; startup consultation mentioned”, eight days after Parliament's July 2 winter recess begins. Senators voted on business relief provisions that are still being designed.
By the numbers
- 3.6% trimmed mean CPI to May 2026 — highest since September 2024, above market expectations
- $3.6 billion in additional tax revenue projected over the forward estimates — 85% from negative gearing restrictions
- 680,000 jointly owned properties whose grandfathering is fragile on death or divorce
- 45 days before new residential SMSF borrowing closes — inserted without Treasury modelling
- 47.4% national auction clearance rate — lowest since the COVID-19 pandemic
What does the inflation backdrop say about the timing?
The government's political narrative required a falling inflation number. The headline CPI obliged — 4.0 per cent to May, down from 4.2 per cent in April[9]Consumer Price Index, Australia, May 2026“Headline CPI 4.0% to May; trimmed mean 3.6% (up from 3.4%); monthly CPI fell 0.7%; automotive fuel fell 11.9% in May” — largely because automotive fuel prices fell 11.9 per cent in May[9]Consumer Price Index, Australia, May 2026“Headline CPI 4.0% to May; trimmed mean 3.6% (up from 3.4%); monthly CPI fell 0.7%; automotive fuel fell 11.9% in May” under the fuel excise halving. Strip out that temporary effect, and the picture inverts sharply. Trimmed mean inflation rose to 3.6 per cent and services inflation accelerated to 3.7 per cent from 3.5 per cent in April[10]Australia Inflation Rate“Trimmed mean CPI 3.6% highest since September 2024, above expectations 3.5%; services inflation accelerated to 3.7% from 3.5%” — reflecting housing, health, and meals-out costs that have nothing to do with energy prices.
The fuel excise relief that suppressed headline CPI will not hold. A partial 16-cents-per-litre extension runs only to August 2, with a July 1 step-up at the bowser now locked in[12]Australia Petrol & Diesel 2026 Forecast — Excise Cliff & Geelong“Confirmed June 23: partial 16c/L extension to August 2; July 1 step-up of ~16c/L; Geelong RCCU restarted June 23”. BNY APAC Macro Strategist Wee Khoon Chong warned that "markets appear too complacent in assuming the current tightening cycle has peaked"[11]Australia's headline inflation cools but sticky core CPI keeps RBA rate risk alive“Auction clearance 47.4%; consumer sentiment 80.6; BNY quote on rate complacency; Deloitte one more hike forecast; VanEck 'stubborn' quote”. Deloitte forecasts one further RBA rate rise[11]Australia's headline inflation cools but sticky core CPI keeps RBA rate risk alive“Auction clearance 47.4%; consumer sentiment 80.6; BNY quote on rate complacency; Deloitte one more hike forecast; VanEck 'stubborn' quote”. VanEck Head of Investments and Capital Markets Russel Chesler said inflation "is no longer just sticky, it is starting to look stubborn"[11]Australia's headline inflation cools but sticky core CPI keeps RBA rate risk alive“Auction clearance 47.4%; consumer sentiment 80.6; BNY quote on rate complacency; Deloitte one more hike forecast; VanEck 'stubborn' quote”. The June quarter CPI — due July 29 — lands directly in the RBA's August 10–11 decision window.
Was the pace of passage justified?
The bill cleared both houses in under a month from its May 28 introduction[5]Negative gearing, CGT reforms pass Parliament“Bill passed both houses June 25; SMSF LRBA ban 45 days after royal assent; 680,000 co-owned properties widow's tax; Gallagher quote on subsequent legislation” — a pace that invites scrutiny for legislation touching millions of property investors, hundreds of thousands of self-managed super funds, and a housing construction pipeline Australia desperately needs.
Treasury confirmed approximately 85 per cent of the estimated $3.6 billion in additional revenue comes from negative gearing restrictions, with just 15 per cent from CGT changes[3]CGT, negative gearing changes clear final hurdle“Bill ratified by the House of Representatives on June 25 by 98 votes to 39; Treasury confirmed 85% of $3.6bn revenue from negative gearing restrictions; COSBOA warning quoted”. Yet it is the CGT overhaul that generated most of the political noise, while the larger revenue lever — negative gearing restrictions — quietly became law with its key operative term still undefined.
Coalition Senator Slade Brockman labelled the outcome "a retrograde step" that would generate significant uncertainty for businesses[7]Opposition slams 'dirty' tax deal between Greens and Labor“Brockman 'retrograde step' quote; Pocock Greens SMSF amendment quote; 'dirty deal' characterisation”. Council of Small Business Organisations Australia chair Matthew Addison put it plainly: "Tax reform should encourage ambition, investment, and growth. Our concern is that, as currently drafted, these measures risk doing the opposite."[3]CGT, negative gearing changes clear final hurdle“Bill ratified by the House of Representatives on June 25 by 98 votes to 39; Treasury confirmed 85% of $3.6bn revenue from negative gearing restrictions; COSBOA warning quoted”
The Albanese government has delivered Australia's biggest tax overhaul in a generation. Whether it has delivered a good one is a different question entirely.