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Tax Resources

Tax guides and resources

Plain-English guides to Australian tax for individuals, investors, contractors and businesses — with links to official sources and practical calculators.

Key Dates

The tax year at a glance

Common due dates when lodging yourself. Different dates may apply when you use a registered tax agent.

Key tax dates
21st of each monthMonthly BAS (generally)
28 OctoberQ1 BAS (July–September)
31 OctoberIndividual tax returns, if lodging yourself
28 FebruaryQ2 BAS (October–December)
28 AprilQ3 BAS (January–March)
30 JuneFinancial year ends
14 JulySTP finalisation for employers
28 JulyQ4 BAS (April–June)

Tax Calculators

Put the guides into numbers

20 free calculators for income tax, GST, BAS, payroll and more.

Open Calculators

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