Self-lodgers: 31 October following 30 June year-end. Tax agents: typically 15 January (small companies) or 28 February (medium) — exact date depends on the agent's lodgement program.

Company Tax Return

Annual tax return for Australian companies, lodging income, deductions, franking account balance, dividend imputation and reconciling PAYG instalments paid.

Who this applies to

  • All Australian-resident companies
  • Foreign companies with Australian-source income
  • Public trading trusts taxed as companies

What to file

Company Tax Return form with profit & loss, balance sheet, reconciliation, franking account balance, R&D claim if applicable, and CGT schedules.

How to file

Via ATO Online Services for Business, or through a registered tax agent. Most companies use a tax agent for the additional time and expertise.

Payment due

Balance of company tax due same date as return. Quarterly PAYG instalments throughout the year reduce the year-end balance.

Penalties for missing this deadline

FTL penalty up to 5 units (A$1,650 default) per overdue document. GIC on unpaid tax (~11.36% pa). ATO can issue default assessments where returns are seriously overdue.

Filing checklist

  • Finalise statutory accounts under AAS
  • Reconcile accounting profit to taxable income
  • Calculate base rate entity status (turnover < A$50m and ≤80% passive income)
  • Apply correct rate (25% or 30%)
  • Update franking account balance
  • Lodge via tax agent or self-service
  • Pay balance via BPAY

Common mistakes to avoid

  • Misclassifying base rate entity status (passive income test)
  • Forgetting to reconcile franking credits to dividends paid
  • Missing R&D claim by not registering with AusIndustry first
  • Treating Division 7A loans as dividends after balance date

Never miss a Australia deadline

AccountsOS tracks every Australian Taxation Office (ATO) and ASIC (Australian Securities and Investments Commission) deadline and reminds you weeks ahead.

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