Australian taxes can feel confusing, especially with changing rules and multiple filing stages. This guide focuses on when key tax obligations fall due and how to stay compliant.
Understanding the key deadlines helps you avoid penalties, manage cash flow, and claim refunds promptly.
| Tax Type | Typical Due Date | Payment Timing | Who Must Comply |
|---|---|---|---|
| Individual Income Tax (residents) | 31 October each year | Pay as you go (withheld during the year) | All Australian residents with assessable income |
| Company Tax | Base date 30 June, lodgement due 7 months later | Quarterly instalments due 14 days after month end | Companies and some trusts |
| Goods and Services Tax (GST) | Monthly, quarterly, or annual depending on turnover | Payment lodgement due 28 days after reporting period | Businesses registered for GST |
| Pay As You Go (PAYG) Instalments | Quarterly instalment due dates | Balancing payment due with individual or company tax return | Businesses and investors with variable income |
Individual Income Tax Deadlines For Australian Residents
Most individual taxpayers must lodge their income tax return by 31 October. This deadline applies whether you file online through myGov or by paper form. The financial year for individuals runs from 1 July to 30 June, and your tax is calculated on all income earned in that period.
If you use a registered tax agent, you may receive an extension to lodge, but the payment deadline usually remains aligned with your return lodgement date. It is important to check whether you have outstanding PAYG instalments from previous years, as these can affect your final bill.
Late lodgement can attract penalties, while late payment attracts interest. Keeping records of income, deductions, and payment summaries makes the process smoother and reduces the risk of compliance issues.
Company And Trust Tax Obligations
Companies generally have a 30 June base date, with the tax return due 7 months later and any balance of tax payable at that time. Large companies may face staged due dates based on group income, so checking the Australian Taxation Office schedule is essential.
Trusts distributing income to beneficiaries must finalise their income by 30 June and lodge by the later of 4 months after income year end or the individual beneficiary lodgement deadline. Distributions must be clear and traceable so that beneficiaries can include the correct amounts in their own returns.
Quarterly PAYG instalments for companies and trusts are typically due 14 days after the end of each relevant month. Managing cash flow across these instalments and the final return helps avoid surprises at assessment time.
Goods And Services Tax (GST) And Business Registrations
Registered businesses must report GST based on their turnover. Turnover below 20 million usually means quarterly GST returns, while higher turnover typically requires monthly reporting. The reporting period dates depend on your registration choice or ATO assignment.
The payment deadline for GST is generally 28 days after the end of the reporting period. Electronic lodgement and payment through your business portal is the standard method, and keeping track of input tax credits is crucial for accurate GST compliance.
Failure to meet GST deadlines can lead to penalties and interest, so aligning your accounting systems with reporting dates reduces risk and supports better cash flow planning.
Pay As You Go (PAYG) Instalments And Withholding Rules
PAYG instalments are designed for businesses, investors, and high income earners with variable income. The instalment due dates follow quarterly cycles tied to specific month ends, and the ATO calculates instalment notices based on prior year income or activity statements.
If your income this year is expected to be lower, you may apply for a reduction in instalments, but it is important to act before the due date. Balancing instalments with the final tax return ensures that you neither overpay nor underpay across the year.
For employees, most withholding is managed by employers at each payday, but directors and shareholders with variable pay should monitor their overall tax position to avoid a large shortfall at assessment time.
Key Takeaways For Australian Tax Deadlines
- Individual tax returns for residents are generally due by 31 October each year.
- Companies and trusts follow 30 June base dates with specific lodgement and payment schedules.
- GST reporting frequency and payment deadlines depend on turnover and registration terms.
- PAYG instalments for businesses and investors are paid quarterly with a balancing payment at year end.
- Late lodgement or payment can result in penalties, interest, and compliance action from the ATO.
FAQ
Reader questions
What happens if I lodge my individual tax return after 31 October?
Late lodgement can attract penalties, and interest may apply to any unpaid tax. Lodging as early as possible helps reduce these additional charges and gives you more time to address any queries from the ATO.
Are company instalments due 14 days after each month end always fixed?
Yes, for most companies the quarterly PAYG instalments are due 14 days after the relevant month end. However, large companies may have different dates based on income thresholds, so you should confirm your specific schedule with the ATO notice.
Can I change my GST reporting frequency if 28 days after reporting is difficult to manage?
In some cases, businesses can request a change in GST reporting frequency, for example from monthly to quarterly, if it better suits cash flow. You must obtain ATO approval before changing the method to remain compliant.
What should I do if my business activity statement date falls on a public holiday?
If your BAS due date falls on a public holiday, the lodgement and payment deadline is the next business day. Electronic systems typically process lodgements submitted on the next available business day without issue.