The Australian government has initiated a landmark legal battle against Microsoft, with the nation’s consumer watchdog filing a suit in Federal Court on Monday. The core of the case: allegations that Australia sues Microsoft for engaging in “misleading or deceptive conduct” by effectively forcing millions of customers into more expensive subscriptions bundled with its new Copilot AI assistant, all while concealing a cheaper, non-AI alternative.
The Australian Competition and Consumer Commission (ACCC) alleges that the US-based tech giant misled approximately 2.7 million auto-renewing subscribers of its popular Microsoft 365 Personal and Family plans. The lawsuit, filed October 27, 2025, marks one of the world’s first major regulatory challenges targeting the bundling and marketing practices of generative AI services within dominant software ecosystems.
The ACCC’s Case Against Microsoft
- Core Allegation: Microsoft is accused of breaching Australian Consumer Law by telling 2.7 million subscribers they had only two options regarding new AI features: accept a significant price hike or cancel their service.
- The “Hidden” Option: The ACCC alleges Microsoft “deliberately omitted” and “concealed” a third “Classic” plan, which allowed users to retain their existing software (like Word, Excel) at the old price, without the new Copilot AI features.
- Price Hikes: The annual subscription for Microsoft 365 Personal (with Copilot) jumped 45%, from A$109 to A$159. The Family plan rose 29%, from A$139 to A$179.
- ‘Dark Pattern’ Alleged: The cheaper “Classic” plan was allegedly only revealed to customers after they had already initiated the cancellation process for their subscription.
- Potential Penalties: If found liable, Microsoft faces penalties per breach of up to A$50 million (US$32.6m), three times the benefit gained, or 30% of its adjusted turnover during the breach period.
The Allegation: A ‘Deliberately Concealed’ Option
The lawsuit, filed in Australia’s Federal Court, centres on communications Microsoft sent to its Microsoft 365 customers starting in or around October 2024. As Microsoft integrated its generative AI assistant, Copilot, into its ubiquitous Office suite, it informed auto-renewing customers of an impending price increase.
According to the ACCC’s court filings, Microsoft presented subscribers with a false binary choice: either accept the new, higher-priced plan that included Copilot, or cancel their subscription entirely.
The regulator claims this was deceptive because a third option—a “Classic” plan—was available. This plan would have allowed customers to keep their existing access to apps like Word, Excel, and PowerPoint at their original, lower price, simply forgoing the new AI tools.
However, the ACCC alleges this “Classic” option was not mentioned in Microsoft’s primary communications, including emails and blog posts, sent to its 2.7 million affected users. Instead, the watchdog claims the option was “concealed” and only surfaced if a user navigated deep into the subscription settings and began the cancellation process.
ACCC Chair Gina Cass-Gottlieb provided a stark assessment in a statement on Monday.
“We will allege in court that Microsoft deliberately omitted reference to the Classic plans in its communications and concealed their existence until after subscribers initiated the cancellation process to increase the number of consumers on more expensive Cop2ilot-integrated plans,” Ms. Cass-Gottlieb said.
By the Numbers: The ‘Copilot Tax’
The financial impact on Australian consumers was immediate and significant, according to the ACCC’s data. The integration of Copilot, which can draft emails, summarize documents, and generate images, came with a steep premium.
- Affected Subscribers: Approximately 2.7 million Australians subscribed to Microsoft 365 Personal or Family plans with auto-renewal enabled.
- Personal Plan Hike: The annual price for a Microsoft 365 Personal plan surged by 45%, rising from A$109 to A$159.
- Family Plan Hike: The annual price for a Microsoft 365 Family plan increased by 29%, from A$139 to A$179.
The ACCC argues that by failing to disclose the cheaper alternative, Microsoft’s communications “denied its customers the opportunity to make informed decisions about their subscription options.”
Ms. Cass-Gottlieb highlighted the company’s significant market power as a key factor. The Microsoft Office apps included in 365 subscriptions are essential in many people’s lives and given there are limited substitutes to the bundled package, cancelling the subscription is a decision many would not make lightly,” she stated.
A Test Case for the AI ‘Gold Rush’
This lawsuit is less about the functionality of artificial intelligence and more about the “go-to-market” strategy of Big Tech. Analysts view this as a critical test case for how tech giants will be allowed to leverage their dominance in one sector (like operating systems or office software) to strong-arm users into adopting new, expensive products like generative AI.
The ACCC’s allegation points to a classic “dark pattern”—a user interface design that intentionally sters users toward an outcome they did not intend, in this case, a more expensive subscription.
The case also sheds light on simmering consumer frustration. The ACCC noted its investigation was bolstered by “a significant number of consumer reports” and widespread online commentary.
A thread on the social media platform Reddit, r/australia, posted on Monday, was filled with user complaints. One user, “FreakySpook,” commented: “Particularly how rubbish Copilot actually is. Very heavy user of Excel & Word, trying to get it to do things within the apps has flat out broken things to the point I had to revert a backup.
Another user, “Luckyluke23,” wrote that the AI push had driven them away entirely: “Decided to cancel my sub and go all in with Libre Office. It’s free and does everything I need, no ‘AI’ bullshit.
Microsoft’s Response and What’s Next
Microsoft has acknowledged the lawsuit and is reviewing the ACCC’s claims.
“Consumer trust and transparency are top priorities for Microsoft,” a company spokesperson said in an emailed statement. We remain committed to working constructively with the regulator and ensuring our practices meet all legal and ethical standards.”
The ACCC is seeking a range of orders from the Federal Court, including financial penalties, injunctions, declarations, consumer redress for affected customers, and legal costs.
The potential penalties are substantial. Under Australian Consumer Law, the maximum fine for each breach is the greater of:
- A$50 million
- Three times the value of the benefit obtained from the conduct
- 30 percent of the company’s adjusted turnover during the breach period
Given the 2.7 million affected users, any per-breach penalty could multiply into an astronomical sum, underscoring the seriousness of the regulator’s action.
This Australian lawsuit is set to become a global bellwether. Reports indicate the pricing strategy was part of a “market test” that also included New Zealand, Singapore, and other Asian markets. Regulators worldwide, already grappling with how to govern AI, will be watching closely to see if this consumer-rights challenge can rein in the industry’s aggressive push to monetize its new AI tools.
The Information is Collected from The Hindu and MSN.
