Why committees exist
The full House and Senate cannot examine every technical detail of every issue during chamber debate. Committees allow smaller groups of parliamentarians to investigate legislation, government administration and matters of public importance in greater depth.
Committees can gather evidence from departments, academics, industry groups, unions, charities, experts and members of the public. That creates a public evidence base that is often richer than speeches or media releases.
Bill inquiries
A bill can be referred to a committee before its final passage. The committee may invite written submissions and hold public hearings. Witnesses can be questioned about the likely effects of the proposal, drafting problems, implementation risks and alternative approaches.
The committee then reports to Parliament. A report may recommend passage, amendments, further consultation or other action. Committee recommendations are influential but not automatically binding on either chamber.
Standing, select and joint committees
Parliament uses different committee structures. Standing committees have continuing responsibilities in defined areas. Select committees are created for a particular inquiry or purpose. Joint committees include members from both the House and Senate. The Senate also has extensive committee systems for legislation and scrutiny.
The name of the committee matters less to a general reader than its terms of reference: those terms define what the inquiry is authorised to investigate.
Senate estimates
Senate estimates hearings are a major accountability mechanism through which senators question ministers and senior officials about expenditure, administration and government programs. The hearings can produce detailed information that is not available in ordinary political announcements.
Because answers, corrections and additional information can be provided after hearings, readers should consult the official committee page and subsequent documents rather than relying on isolated video clips.
How to use committee material
Start with the inquiry page, then read the terms of reference, the bill or policy being examined, key submissions, hearing transcripts and the final report. Pay attention to dissenting or additional reports because committee members can disagree about conclusions even when they heard the same evidence.
For policy research, committee records are valuable because they show competing claims side by side and identify evidence that parliamentarians considered before a vote.
Primary sources and further reading
We use authoritative Australian institutions as the starting point for this explainer. Follow these links for the underlying rules, official guidance and current details.