While in the US either the House or Senate can do that, in Australia effectively only the Senate can - each “Administration” (we say “government”) gets its power from a majority vote of the House, so if the House votes against the budget, the government must resign. If the Senate does the same, it isn’t forced to.
Another difference relates to the consequences - the monarch’s representative (the Governor-General) can use that as grounds to sack the Prime Minister, appoint a new one, and force a new election, as controversially happened in this case. In the US system there is no constitutional way to have an early election, plus sacking the President is a lot harder (needs an impeachment trial)
The traditional way for a lower house to register a lack of confidence in the government is in fact to amend the appropriation bills to appropriate one additional dollar from the treasury. A government that no longer controls the treasury must resign or call an election.
Confidence = voting for the government in confidence motions (or votes which are not explicit confidence votes but considered to be "matters of confidence"). Supply = voting for the budget (because if the government can't pass a budget, then it is considered to not have the confidence of the house, and has to be replaced).
> After decades of speculation, the letters show once and for all that the Queen and Prince Charles, now Australia’s King, knew as early as September 1975 that Kerr was considering dismissing the government, two months before he did so. This timing was damning.
> They knew a dismissal was being considered by Kerr in the absence of any crisis in government, since the Opposition had not yet made its decision to withhold supply in the Senate.
Thank goodness Australia had serious cutting edge journalists covering The Dismissal [1].
Unlike the United States,
By law, and by basic common sense, there MUST be a bill passed that contains the budget for the coming year. Otherwise no money is made available to public servants.
Any government must be able to secure support for this bill once a year.
Otherwise the entire civil service will not be paid.
What the Queen established was the precedent that, instead of having a government shutdown over supply like the United States, you instead just have an election right away.
Frankly, compared to the US approach, it's much more practical.
Minority governments, with confidence and supply agreements from minor parties (or not) are not uncommon in the world, but they're obviously not as stable ... but in an English (and commonwealth) parliamentary democracy it takes a loss of confidence (a majority vote of no-confidence in the parliament), or loss of supply (the inability to fund government) for the head of state to force an election
But the Queen and GC have dissolved (or prorogated) the Canadian Parliament as recent as 2008.
https://en.wikipedia.org/wiki/2008%E2%80%932009_Canadian_par...
Supply relates to the access to money, specifically through approval of the government budget. If a government has supply, it has an agreement with enough members of the house that it will retain approval to spend money on its policies. If a government loses supply, it loses the support of the house to spend any state money.
Similarly, confidence relates to support that the government represents the will of the people. Just as with supply, a government must secure a vote from enough members that they will support the government’s actions (they have confidence in the government). When they talk about a “vote of no confidence” it specifically means voting to remove support of the government in this way.
Further info can be found here: https://en.wikipedia.org/wiki/Confidence_and_supply
[1] https://www.moadoph.gov.au/blog/double-dissolution-what-is-i...
Subsequent to this, there is an agreement that appropriations bills are split in 2. One bill is to continue funding from last years budget (on the basis that it was approved, and passed both houses, and therefore those things need to continue to be funded), and appropriations bill #2 which is all of the new initiatives. This way, government will continue to function, but the government and opposition can still debate and argue over changes.
If you cannot pay those then the government is effectively not a government.