Late Tax Return Lodgment in Adelaide and Across South Australia

If you have not yet lodged your 2026 individual income tax return, you are not alone. Many taxpayers across Adelaide, Whyalla, Port Augusta, Port Lincoln and the wider Eyre Peninsula miss the 31 October deadline each year. The good news is that a registered tax agent can, in many cases, apply for an extended lodgment date on your behalf through the Australian Taxation Office (ATO) tax agent lodgment program.

Engaging a registered tax agent before the relevant deadline is the key step. Once you are an MLE Advisory client and we have the information and authority we need, we assess whether you qualify for an extended lodgment date. An extension is not automatic in every case, and eligibility can depend on your circumstances, prior lodgment history and the applicable ATO requirements. Where an extension is not available, we explain the position to you as soon as reasonably practicable.

Failing to lodge on time can be costly. The ATO may apply a failure-to-lodge penalty of one penalty unit for every 28 days a return is late, up to a maximum of five penalty units. With the penalty unit value applying from 1 July 2026, that can mean penalties of up to $1,820 for an individual taxpayer. Booking a free 30 minute consultation with a qualified accountant and licensed tax agent is the simplest way to understand your position and take action before penalties add up.

MLE Advisory Pty Ltd is a registered tax agent (registration number 26280677) based in South Australia, servicing clients online across Adelaide, the Eyre Peninsula and surrounding regional towns. We prepare individual income tax returns from $250, and we also assist sole traders, small business owners and rental property owners. If you have outstanding returns from previous financial years, we can help you bring them up to date with the ATO.

The process is straightforward. Book a free online consultation, provide your income records and any relevant documents, and we will prepare your return for your review before lodgment. You remain responsible for the accuracy of the information you provide, and we apply reasonable care in preparing and lodging your return through the relevant ATO systems.


Extended deadlines

Apply for a later lodgment date through a registered tax agent.


Registered tax agent

Tax agent registration 26280677, professional and confidential service.


Speak with us

Call 0495 033 633 or book a free 30 minute session online.

More Details - https://tax.mleadvisory.au