Australia Is About to Sue Meta Over Its Teen Ban — What the Under-16 Crackdown Means for Your Facebook Ads

On October 20, Australia’s Communications Minister Anika Wells said the government expects legal action against Facebook, TikTok, Snapchat, YouTube and Instagram over the country’s under-16 social media ban. The platforms are accused of failing to take reasonable steps to keep under-16s off their services — a ban that’s been in force for almost a year, and one the government’s own regulator admits isn’t working very well yet.

If you run Facebook ads, this one’s worth your attention. Not because you’ll be sued — the action targets the platforms, not advertisers — but because it signals where teen audiences on Meta are heading globally: a smaller, more restricted inventory that you should plan around now rather than after the rules tighten.

Here’s the part most coverage skips. The under-18 audience in Meta Ads Manager was already one of the worst segments you could buy. Australia’s lawsuit is the enforcement layer catching up to restrictions Meta put in place for itself years ago. The advertisers who’ll feel this aren’t the ones deliberately targeting teens — they’re the ones who left the age floor at 13 in their ad sets and never thought about it again.

What Australia Is Actually Suing Over

Australia passed the world’s first under-16 social media ban, and it came into force roughly a year ago. The law requires platforms to take “reasonable steps” to prevent under-16s from holding accounts — a deliberately vague standard that’s now becoming a courtroom question.

Two facts from the government’s own side make the coming case interesting. First, the online safety regulator eSafety found in a July report that most underage users were able to keep their existing accounts or simply create new ones, largely because the platforms’ age checks were easy to defeat. Second, the government has responded by sharpening the regulator’s teeth: maximum penalties for breaches have doubled to A$109.2 million (about $76 million), and eSafety Commissioner Julie Inman Grant now has expanded investigative powers — she can demand internal documents and summon current or former employees to answer questions.

So the lawsuit isn’t about new rules. It’s about the government deciding that “we’re trying” is no longer a defense.

The Reality Check: Meta Already Killed Teen Targeting

Here’s the sentence that matters more than any headline: Meta’s own ad rules have restricted targeting of under-18s since 2021. Advertisers reaching users under 18 lost access to interest targeting, behavioral signals, custom audiences, and lookalike audiences — all of it. And in early 2023, Meta removed gender as a targeting option for teens too, leaving advertisers with exactly two signals: age and location.

Let that sink in. For five years, if you targeted a 16-year-old on Facebook or Instagram, the only things you could choose were how old they were and where they lived. No interests. No behaviors. No retargeting of site visitors. No lookalikes of your best customers.

The restrictions apply globally — Meta confirmed there are no industry exemptions, and they cover boosted organic posts too. Teen accounts also default to private profiles with restricted messaging, which further shrinks the engagement surface your ads can ride on.

We mention this because the common reaction to the Australia news is panic: “are my campaigns about to break?” They won’t. If your targeting already worked within Meta’s teen restrictions, you’ve been living in this world since 2021. The lawsuit changes the enforcement environment around the platforms, not the targeting options in your ad account.

The Mistake We See Most Often

Ad sets with the age range left at 13–65+. Someone built the campaign three years ago, dragged the minimum down to 13 “for reach,” and never touched it again.

This was always a bad idea. The 13–17 slice in a broad ad set is the part of your audience you can neither target precisely nor measure cleanly. Meta’s delivery system, left to its own devices, will spend a fraction of your budget there because the inventory is cheap — cheap because nobody who knows what they’re doing bids aggressively for it. We’ve seen accounts where 8–12% of a “broad” campaign’s impressions went to under-18s, producing almost zero attributable purchases, while the advertiser’s blended CPA quietly crept up.

Meta Ads Manager’s default age range is 18–65+. If you never moved that slider, you’re already teen-free — and honestly, that’s where most US advertisers should have been all along.

What to Do This Week

Five moves, none of them dramatic.

Audit your age floors. Go through active ad sets and check the minimum age. Anything set below 18 should either move to 18+ or have a documented reason to stay. This is a ten-minute job in Ads Manager and it’s the single highest-leverage change in this article.

If your product is genuinely teen-bought, adjust your expectations, not your panic. You can still reach 13–17 with age and location targeting only. Treat it as a reach and awareness play — broad creative, simple message, no personalization. Detailed targeting simply doesn’t exist for this slice, and our broad vs. detailed targeting breakdown explains why that distinction matters more as your pixel matures. Don’t build a performance funnel on an audience you can’t retarget.

Stop expecting lookalikes to fix it. Custom audiences and lookalike audiences can’t be used to reach under-18s at all. If your customer base skews young, your best-performing source lists are silently excluding the youngest buyers — worth knowing before you blame the lookalike for “not finding” people it was never allowed to see.

Check your Advantage+ campaigns. Advantage+ Shopping Campaigns run on Meta’s automated targeting, which respects the same teen restrictions — the algorithm can’t find a signal in inventory it’s not allowed to read. If you’re running ASC alongside manual campaigns, as our Advantage+ Shopping guide recommends, the manual side is where the age-floor audit matters most.

Build so you’re not dependent on a disappearing segment. The direction of travel is one-directional everywhere: Australia is suing, the EU’s Digital Services Act leans the same way on minors’ data, and US states keep passing age-verification laws. A funnel that only works if it can reach 14-year-olds is a funnel with an expiry date. Design for 18+ and treat any teen reach as a bonus, not a foundation. And it’s not just teen inventory shrinking — Meta is now blocking ads that link to TikTok entirely in seven countries. Same lesson: plan like any platform surface can disappear on a week’s notice, because lately, they do.

What This Doesn’t Change

For US advertisers, nothing in federal law changed this week. Meta’s teen targeting limits were already global, so your ad account options are identical to what they were on October 19. The lawsuit is the Australian government vs. the platforms — no advertiser is a defendant, and no new advertiser-facing rule was announced.

What changed is the signal. When a government doubles the fines to A$109.2 million and gives its regulator subpoena-style powers, platforms respond by getting stricter, not looser. Expect Meta’s age verification to get more aggressive — more account removals, more misclassified adults having to verify, more conservative delivery around the edges of teen inventory. The inventory gets cleaner for everyone, and marginally smaller for advertisers who were buying the cheap 13–17 impressions.

The Honest Caveat

We’re not sure this changes actual reach much in the near term. The eSafety report’s own finding — that kids just make new accounts — is the uncomfortable truth under this whole story: age gating on social media is mostly a paper exercise today, and a lawsuit doesn’t change the underlying math of teenagers and the internet. Meta will get better at detection because it has to, not because it suddenly can.

But the compliance posture is what matters now. The era of platforms grading their own homework on teen safety is ending — Australia said so out loud on October 20. Plan your targeting like the 13–17 segment is going to keep shrinking, because over a two-to-three-year horizon, it will. That’s not a prediction about any single court case. It’s just the direction every regulator on earth is walking in.

FAQ

Am I going to be sued as an advertiser?

No. The action targets the platforms — Facebook, TikTok, Snapchat, YouTube, Instagram — not advertisers, and no new advertiser-facing rule was announced. What changes for you is the enforcement environment around teen inventory, not your ad account options.

Can I still reach 13–17-year-olds on Meta at all?

Yes, but only with age and location — no interests, no behaviors, no custom audiences, no lookalikes. Treat it as a reach and awareness play with broad creative, not a performance funnel, because you can’t retarget an audience you were never allowed to define.

What is the single highest-leverage fix in this post?

Audit your age floors. Any ad set still sitting at 13–65+ should move to 18+ or have a documented reason to stay. Meta Ads Manager’s default is already 18–65+, so if you never moved the slider, you’re already teen-free.

Does Australia’s lawsuit change anything for US advertisers in law?

Nothing in federal law changed. Meta’s teen targeting limits were already global since 2021, so your options are identical to what they were before October 20. The signal is the direction: fines doubled to A$109.2 million and the regulator gained subpoena-style powers, so expect age verification to get stricter, not looser.