What responsibility do Australians have to pay taxes (duty to contribute)?

The responsibility of Australians to pay taxes is one of the central obligations of citizenship and residence. Federal taxes collected by the Australian Taxation Office (ATO) fund national programmes including Medicare, social security, national defence, and the federal share of education and health. State taxes fund schools, public hospitals, police, courts, and infrastructure. Local council rates fund roads, parks, libraries, and waste services.

Income tax is the largest single revenue source. From 1 July 2024, the Stage 3 tax cuts brought in marginal rates of 0 per cent up to 18,200 dollars, 16 per cent on income from 18,201 to 45,000 dollars, 30 per cent on 45,001 to 135,000 dollars, 37 per cent on 135,001 to 190,000 dollars, and 45 per cent on income above 190,000 dollars. The Medicare Levy of 2 per cent and, for higher earners without private health insurance, the Medicare Levy Surcharge add to the headline rates. Most income tax is collected through PAYG withholding from each pay, reconciled annually through the tax return.

Other federal taxes include the Goods and Services Tax (GST) of 10 per cent on most goods and services, fringe benefits tax on employer-provided non-cash benefits, capital gains tax on profits from selling investment assets, and company tax of 25 to 30 per cent. State taxes include payroll tax (above state-specific thresholds), stamp duty on property and vehicle transfers, land tax above the family-home exemption, and specific gambling, insurance, and motor vehicle taxes.

The duty to pay taxes is enforced through the ATO's compliance and collection powers. Most Australians pay correctly without intervention through PAYG and annual returns. The ATO uses automated data-matching with banks, share registries, Centrelink, Medicare, and international tax authorities to identify discrepancies. Audits, penalties (up to 75 per cent of unpaid tax in serious cases), and prosecution are reserved for deliberate evasion. Tax fraud and large-scale evasion can attract prison sentences. Beyond compliance, the social expectation is that Australians will pay their fair share to support the public services that benefit everyone, and the Tax Justice Network has argued that this expectation should also apply more rigorously to multinational corporations and high-wealth individuals.