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Taxpayers preparing their Australian income tax return for the 2025–26 financial year may have October 31 marked on their calendar. Traditionally, this is the date associated with self-lodged individual tax returns.
However, a small calendar change is worth knowing about in 2026.
October 31 falls on a Saturday this year. Because the usual lodgment date falls on a weekend, the standard self-lodgment deadline shifts to the next business day — Monday, 2 November 2026.
If you plan to Lodge Tax Return yourself, knowing the correct deadline is important. However, not every Australian taxpayer automatically has until November 2. Your applicable lodgment date can depend on how you lodge your return and your individual tax circumstances.
The 2025–26 income year finished on 30 June 2026. For individuals who prepare and lodge their own return, October 31 is normally the important date to remember.
In 2026, though, October 31 lands on a Saturday. As a result, the standard self-lodgment date moves to the following business day.
For most people who are required to self-lodge, the relevant date is therefore:
Monday, 2 November 2026
Although the calendar gives taxpayers an additional couple of days, leaving everything until the final day can still create unnecessary pressure. Missing information, incorrect figures or forgotten deductions can take time to sort out.
Not necessarily.
One of the most common mistakes around tax time is assuming that every taxpayer has the same lodgment deadline.
People who lodge through a registered tax agent may fall under the ATO’s tax agent lodgment program. In some circumstances, this can mean their return is due later than the standard self-lodgment date.
However, anyone intending to use a registered tax agent should not simply wait until after October 31 to make contact. Your circumstances and the agent’s lodgment arrangements can affect what applies to you.
Other factors can also influence a taxpayer’s obligations. For example, outstanding returns from previous years or the type of entity involved may affect the relevant lodgment arrangements.
The practical lesson is simple: check the date that applies to your own tax situation rather than relying on a general calendar date.
Preparing your return at the last minute can make it easier to overlook income or claim information incorrectly.
Before submitting your return, take some time to review your financial records and check the information available through your ATO records.
Depending on your circumstances, this may include:
Don’t assume that every figure has been captured correctly without checking it. Comparing the information available to you with your own records can help identify missing or unexpected amounts before the return is lodged.
Preparing these details early also gives you an opportunity to resolve discrepancies rather than discovering them when you are trying to meet the deadline.
If you operate as a sole trader, your individual tax return can include income and expenses from your business activities.
This means tax-time preparation may involve more than simply checking employment income and standard deductions. Business records, deductible expenses and other relevant figures need to be considered when working out your taxable position.
A sole trader should therefore allow enough time to reconcile their business records and make sure the information going into the return is accurate.
If your income tax return includes sole trader activities, professional Sole Trader Tax Return assistance can help you work through the relevant income and deduction information before lodgment.
If an earlier tax return is still outstanding, ignoring it will not make the problem disappear.
Where a return is overdue, lodging it as soon as reasonably possible is generally a better approach than allowing it to remain outstanding. Depending on the circumstances, the ATO may impose penalties or interest.
Having multiple outstanding returns can also make it harder to get a clear picture of your overall tax position.
If you have an overdue return, getting your records together and addressing the outstanding obligation can be an important first step. A Late Tax Return service may be appropriate where previous returns still need to be completed and lodged.
No. The October 31 date should not be treated as a blanket deadline for every Australian tax entity.
Different structures have different tax reporting and lodgment requirements. A company, partnership or trust should be considered according to the rules and circumstances applying to that particular entity.
For instance, the tax obligations associated with a company are different from those attached to an individual taxpayer. Likewise, a partnership has its own reporting requirements, while trusts have separate tax considerations.
This is why business owners should avoid applying the standard individual tax-return deadline to every type of business structure.
If your business operates through a company, understanding the relevant lodgment requirements and preparing your Company Tax Return correctly can help you meet your tax obligations.
Knowing that the 2026 self-lodgment date moves from Saturday, October 31 to Monday, November 2 is useful, but those extra days should not be treated as extra preparation time.
Tax returns can become complicated when records are incomplete or figures do not match. Trying to resolve these issues immediately before lodgment can lead to avoidable stress.
A better approach is to start gathering your information well ahead of the due date. This gives you time to identify missing documents, review deductions and clarify anything that appears inconsistent.
If you are using a registered tax agent, arranging your tax return assistance early can also give you more certainty about the lodgment process and the date relevant to your circumstances.
For a standard individual taxpayer who is required to self-lodge, the important 2026 date is:
Monday, 2 November 2026
The reason is straightforward: October 31, the usual date associated with self-lodged returns, falls on a Saturday.
However, this date should not be assumed to apply to everyone. Taxpayers using a registered tax agent, people with overdue returns and taxpayers with more complex circumstances may have different requirements or lodgment arrangements.
Also read: The Most Common Tax Return Errors Australians Make
The commonly quoted 31 October 2026 tax return deadline needs a small correction this year. Because October 31 falls on a Saturday, the standard self-lodgment deadline moves to Monday, 2 November 2026.
But the calendar date alone does not determine every taxpayer’s obligation.
Before lodging, confirm the deadline that applies to your circumstances, check your income and deduction information, and make sure your supporting records are in order. Starting early can make it much easier to deal with missing information or unexpected issues before your return needs to be lodged.
Disclaimer:
The information in this article is provided for general information purposes only and is based on Australian tax rules and guidance available at the time of publication. Tax deadlines and requirements can vary depending on your individual circumstances and may change when ATO guidance is updated. For advice specific to your situation, consider consulting a registered tax agent or checking the latest information directly with the ATO.