The Australian Senate sat down on Wednesday, June 24, to debate the Appropriation Bill (No. 1) 2026-2027, Appropriation Bill (No. 2) 2026-2027, and Appropriation (Parliamentary Departments) Bill (No. 1) 2026-2027[4]Appropriation Bills — Budget 2026-27“Appropriation Bill (No. 1) 2026-2027, Appropriation Bill (No. 2) 2026-2027, Appropriation (Parliamentary Departments) Bill (No. 1) 2026-2027.” — the three legal instruments without which the Commonwealth cannot legally spend a cent after June 30. They arrived in the chamber in the middle of a sitting fortnight that Coalition senators say has been captured by a deal whose full terms were never disclosed to the opposition.
These bills matter for reasons that go well beyond their dollar total. Total government spending in 2026-27 is estimated at approximately A$833 billion[3]2026 Australian federal budget“The budget includes total government spending estimated to total A$833 billion.” — the largest Commonwealth budget in Australian history. Embedded in that figure is the most consequential single measure of the entire budget: an assumed reduction in NDIS expenditure of $37.8 billion over four years, the largest component of a $63.8 billion total savings package. Under Section 53 of the Constitution, not a cent of that can be touched by any senator.
What Are the Appropriation Bills?
The three 2026-27 Appropriation Bills were introduced by Treasurer Jim Chalmers on Budget night, May 12, 2026[4]Appropriation Bills — Budget 2026-27“Appropriation Bill (No. 1) 2026-2027, Appropriation Bill (No. 2) 2026-2027, Appropriation (Parliamentary Departments) Bill (No. 1) 2026-2027.”, and passed the House of Representatives on June 4[5]House Bills List — Parliament of Australia (as at cob 4 June 2026)“Appropriation Bill (No. 1) 2026-2027 — introduced Budget night (12/5), passed House 4/6; Appropriation Bill (No. 2) 2026-2027 — introduced Budget night (12/5), passed House 4/6.”. They are the annual supply bills that authorize every department of state to draw from the Consolidated Revenue Fund for the new financial year — funding Medicare, the Defence Force, aged care, schools, NDIS supports, foreign aid, and housing programs.
The bills passed the House through Labor's 94-seat majority. They arrived in the Senate listed for debate on June 24 — the third sitting day of Winter Week 4, with the July 2 winter recess approaching.
Why Is the Senate Running Out of Time to Scrutinize A$833 Billion?
On the evening of Monday, June 23, the Labor government moved an hours motion — a procedural instrument that sets mandatory time limits on debate and forces a vote at a specified hour regardless of how many senators remain to speak.
Senator Slade Brockman, the Liberal senator for Western Australia serving as Deputy-President of the Senate, disclosed on June 23 that the motion covered far more than the two Tax Reform No. 1 Bills at the center of the announced Greens-Labor deal[1]Treasury Laws Amendment (Tax Reform No. 1) Bill 2026, Income Tax Rates Amendment (Tax Reform No. 1) Bill 2026; Second Reading — Senate, 23 June 2026“Senator Brockman: 'In the hours motion moved today, they're adding not just these two bills but another 11... We really don't know the content of it. It was done behind closed doors between Labor and the Greens.'”: "In the hours motion moved today, they're adding not just these two bills but another 11. Another 11 bills will be added to this seemingly never-ending list of bills that are just rushed through this place without proper scrutiny."
Senator Jessica Collins, Liberal senator for New South Wales, counted 12 bills in the budget package being rushed through[1]Treasury Laws Amendment (Tax Reform No. 1) Bill 2026, Income Tax Rates Amendment (Tax Reform No. 1) Bill 2026; Second Reading — Senate, 23 June 2026“Senator Brockman: 'In the hours motion moved today, they're adding not just these two bills but another 11... We really don't know the content of it. It was done behind closed doors between Labor and the Greens.'”: "It's not one but 12 bills. I've just counted. This set of bills — this budget — is a tax on Australian dreams."
We really don't know the content of it. It was done behind closed doors between Labor and the Greens... The Australian people certainly don't know what the deal is.
Senator Slade Brockman, Liberal, WA — Senate Hansard, 23 June 2026
The specific list of 11 additional bills included in the hours motion beyond the Tax Reform package was not publicly disclosed by the government as of June 23. That opacity is not a procedural footnote. When senators do not know which bills they will be asked to vote on, under what time limits, and pursuant to what deal conditions, the Senate's core function as a house of review has already been circumvented before the vote is taken.
What Is Locked Into the Appropriation Bills?
The most significant spending assumption embedded in the 2026-27 Appropriation Bills is the baseline that assumes a structurally smaller NDIS. The budget's fiscal projections assume approximately $37.8 billion in four-year NDIS savings — reflecting a scheme with approximately 350,000 fewer participants by 2031 than currently projected. That figure is what makes the budget's bottom line work.
But that figure exists in the Appropriation Bills as a spending assumption, and Section 53 bars the Senate from changing it. Whether the Senate ultimately passes or defeats the separate National Disability Insurance Scheme Amendment (Securing the NDIS for Future Generations) Bill 2026[6]Senate Notice Paper No. 49 — Parliament of Australia, 48th Parliament, as at 22 June 2026“Notice Paper No. 49, dated 22 June 2026, listing Tax Reform No. 1 Bill 2026 and related bill, NDIS Future Generations Bill 2026, and other government business before the Senate.” — whose final committee report is due August 14 — the Appropriation Bills already authorize the reduced spending level the government intends to implement.
The $200 million Inclusive Communities Fund announced as a partial replacement for social and community participation supports being cut 50 per cent from October 1 is held in contingency reserve as of late June, with no operating model, no delivery criteria, and no confirmed geographic coverage. That contingency is also embedded in these bills. The Senate cannot amend it.
2026-27 Appropriation Bills in numbers
- A$833 billion total government spending authorized for 2026-27
- $37.8 billion NDIS savings over four years embedded in spending baseline
- $63.8 billion total four-year savings package driving the budget
- 13+ bills covered by the hours motion agreed June 23, per Coalition count
- June 4 — the date the Appropriation Bills passed the House of Representatives
- Section 53 — constitutional bar on Senate amendment of Appropriation Bills
What Was Actually Debated on June 22–23?
The week began on June 22 with Senator Andrew Bragg (Liberal, Shadow Minister for Housing) moving a matter of urgency requiring the government to explain why it misled Australians by promising no tax changes, then pursuing them[2]Budget: Matters of Urgency — Senate, 22 June 2026“Senator Darmanin (Labor): '82 per cent of the benefits of the capital gains tax discount flow to the top 10 per cent of income earners. Three-quarters flow to the top five per cent. Nearly 60 per cent flow to the top one per cent.'”. Senator Lisa Darmanin (Labor, Victoria), the Economics Legislation Committee chair, responded that "82 per cent of the benefits of the capital gains tax discount flow to the top 10 per cent of income earners" and "nearly 60 per cent flow to the top one per cent"[2]Budget: Matters of Urgency — Senate, 22 June 2026“Senator Darmanin (Labor): '82 per cent of the benefits of the capital gains tax discount flow to the top 10 per cent of income earners. Three-quarters flow to the top five per cent. Nearly 60 per cent flow to the top one per cent.'”.
On June 23, the Treasury Laws Amendment (Tax Reform No. 1) Bill 2026[8]Government introduces first tranche of tax reform legislation“'This legislation will help 75,000 Australians realise the dream of homeownership' and represents 'the most significant transformation of the tax system in over a quarter of a century.'” — which Treasurer Chalmers said would "help 75,000 Australians realise the dream of homeownership[8]Government introduces first tranche of tax reform legislation“'This legislation will help 75,000 Australians realise the dream of homeownership' and represents 'the most significant transformation of the tax system in over a quarter of a century.'”" and represent "the most significant transformation of the tax system in over a quarter of a century" — entered second reading debate with the Greens confirming their support, the Coalition confirming their opposition, and a flurry of second reading amendments foreshadowed.
Senator Barbara Pocock (Greens, SA) acknowledged the deal's limits, noting Labor had locked in "$33 billion in tax handouts for those with two or more investment properties," citing Parliamentary Budget Office analysis of ATO 2023-24 data[1]Treasury Laws Amendment (Tax Reform No. 1) Bill 2026, Income Tax Rates Amendment (Tax Reform No. 1) Bill 2026; Second Reading — Senate, 23 June 2026“Senator Brockman: 'In the hours motion moved today, they're adding not just these two bills but another 11... We really don't know the content of it. It was done behind closed doors between Labor and the Greens.'” — a $33 billion grandfathering the Greens did not secure removal of.
The Senate Economics Legislation Committee[7]Treasury Laws Amendment (Tax Reform No. 1) Bill 2026 and a related bill — Senate Economics Legislation Committee“Committee: Economics Legislation Committee; Date referred: 28 May 2026; Submissions close: 09 June 2026; Reporting date: 19 June 2026.” had referred the Tax Reform No. 1 Bill on May 28 with a reporting deadline of June 19 — a six-week inquiry window for legislation the Tax Institute called "some of the most significant changes to Australia's tax system in decades."
Convention Versus Scrutiny
The Appropriation Bills will pass. The Coalition, as is convention, supports supply bills regardless of its opposition to the underlying budget — withholding supply is constitutionally catastrophic. But convention is not endorsement.
Brockman estimated on June 23 that approximately 146 bills have been guillotined under the Albanese Labor government through hours motions or similar devices[1]Treasury Laws Amendment (Tax Reform No. 1) Bill 2026, Income Tax Rates Amendment (Tax Reform No. 1) Bill 2026; Second Reading — Senate, 23 June 2026“Senator Brockman: 'In the hours motion moved today, they're adding not just these two bills but another 11... We really don't know the content of it. It was done behind closed doors between Labor and the Greens.'” — a count he acknowledged may be imprecise. Even if the figure is somewhat lower, the direction is clear: a Senate that passes legislation under time limits it did not negotiate, at the end of a sitting fortnight it was not consulted about, scrutinizing A$833 billion it cannot amend, is a Senate being asked to endorse rather than review.
For a chamber whose constitutional purpose is precisely to do what the House of Representatives — where Labor holds a 94-seat majority — cannot be trusted to do alone, that is a structural failure worth naming plainly.