Can I still file my taxes even after the deadline?

Yes — you can lodge your tax return at any time after the deadline, and you should do so as soon as possible. While you will likely face a Failure to Lodge penalty and interest charges, the cost of delaying further always exceeds the cost of lodgement today.

Lodgement After 31 October Is Always Possible

Absolutely. The ATO accepts late returns at any time, though penalties apply. Unlike some tax obligations that become statute-barred after a certain period (usually four years), tax return lodgement obligations generally do not expire while you have an outstanding tax debt. The ATO can raise an assessment at any time if you have not lodged.

If you are owed a refund, there is technically no time limit to claim it — but it is processed faster if you lodge promptly. The ATO may hold refunds for non-lodged prior returns and use them to offset any outstanding tax debts.

FTL Penalties and Interest for Late Lodgement

FTL penalties apply automatically based on days late:

• 1-28 days late: $1,100 (individual)
• 29-56 days late: $2,750
• 57-84 days late: $5,500
• 85+ days late: $8,250

In addition, general interest charge (GIC) accrues daily on any tax owed from the original due date. GIC compounds, so the longer you wait, the more you owe. GIC rates in 2025-26 are approximately 11.34% p.a., adjusted quarterly by the ATO.

Can You Reduce or Remit the Penalty?

Yes — the ATO has discretion to remit part or all of FTL penalties if you have a reasonable excuse. Acceptable reasons include:

• Serious illness or hospitalisation at the due date
• Natural disaster affecting your records
• Circumstances completely outside your control
• Death of a close family member around the due date

You must apply for remittal — it does not happen automatically. Lodge your return first, then write to the ATO explaining your circumstances with supporting documentation.

Engaging a Tax Agent After the Deadline

If you are considering using a tax agent to get an extended deadline, that only works if you engage the agent before the original due date — 31 October. Engaging an agent after that date does not extend your deadline and does not reduce penalties already applied. However, a tax agent can still help you lodge correctly, claim maximum deductions, and negotiate with the ATO on your behalf.