Do You Actually Need Consent Under Australian Privacy Law?

Last Updated on 18/06/2026 by Damin Murdock

Consent is considered the gold standard of data privacy. Having your users tick the “I agree” box isn’t always enough to protect your business from legal risk. 

In the Australian Privacy Principles (APPs) and the Privacy Act 1988 (Cth), having only a vague pop-up on your website and nothing else can still leave you open to lawsuits. Your business needs to know when the law explicitly demands consent, and when data can legally be handled without it.

Collecting Data Fairly

Before you even worry about a consent box, you have to look at APP 3. This is the baseline rule for grabbing personal information in Australia. Basically, you can’t collect data unless it meets these three conditions:

1. It’s reasonably necessary for what your business actually does. No hoarding data “just in case.”
2. You collect it through lawful and fair means. No sneaky behind-the-scenes tracking tricks.
3. You let people stay anonymous or use a fake name if they want to, unless there’s a strict legal reason you can’t (like verifying someone’s identity for a bank).

These rules apply across the board, whether you’re a government agency or a private company covered by the Act.

The Notification Rule

Businesses don’t always need a user’s consent to take their data, but they are legally required to tell them it is being done.

That is APP 5. It means you have to give your users a clear privacy notice before, or at the moment, their data is collected. This notice has to cover who collects the data, why it’s being collected, and who it could be shared with. It also needs to give them a way to look at their data and make a complaint if necessary. 

When Is Consent Required?

To understand, you have to split data usage into two different categories: primary and secondary purposes.

• The Primary Purpose

If you use personal information for the exact, obvious reason the person gave it to you, you do not need separate consent. Think about online shopping. If a customer types in their home address to buy a pair of boots, you can use that address to mail the package. That’s the primary purpose. Asking for extra consent click is legally redundant.

• The Secondary Purpose

It gets messy when you want to use that same information for a completely different reason later. That’s a secondary purpose, and it almost always requires explicit consent.

However, there are exceptions. For example, when a user can naturally expect their data to be used this way, or when the data is directly related to the primary purpose, or when you’re mandated by law to hand over user data. Emergencies could also grant you an exception, for example, when there’s an immediate threat to someone’s life. 

The New Risk of “Data Hoarding”

Australian privacy laws underwent massive updates to the Privacy Act. It grants individuals a personal right to sue companies for serious invasions of privacy. If you experience a data breach or get caught handling data recklessly, you open your business to lawsuits. On top of that, the regulators are actively targeting businesses that hoard data they don’t need. Serious breach fines can reach $50 million.

Core Privacy Duties That Consent Won’t Fix

Consent doesn’t absolve businesses from following other privacy rules. Businesses must always maintain an up-to-date, easy-to-read privacy policy on their website (APP1). If you use AI to make major decisions about your users, you are also legally required to disclose that in your privacy policy. 

Your business is also legally responsible for keeping data accurate, and for protecting user data from any breach, leak or accidental loss (APP 10 & 11). 

Moreover, sharing data with third parties is restricted to when you give your users notice, obtain their consent, or when you are legally mandated to do so (for example, because of a court order).

In today’s data-driven economy, understanding the role and limits of consent is critical to privacy compliance. While consent remains important, it is only one part of the broader legal framework under the APPs.

At Leo Lawyers, we help organisations navigate complex privacy laws with clarity and confidence. Feel free to contact Damin Murdock at Leo Lawyers via our website, on (02) 8201 0051 or at office@leolawyers.com.au. Further, if you liked this article, please subscribe to our newsletter via our Website, and subscribe to our YouTube, LinkedIn, Facebook and Instagram. If you liked this article or video, please also give us a favourable Google Review.

DISCLAIMER: This is not legal advice and is general information only. You should not rely upon the information contained in this article, and if you require specific legal advice, please contact us.