2026 UA Predictions: What Actually Changes for Buyers

Every December produces a crop of 2026 UA predictions, most of which are really just this quarter's news dressed up as foresight. The useful exercise isn't guessing what will happen but sorting what is already decided from what is still contested, because a buyer's planning should treat those two categories very differently. Some of what follows is confirmed policy with a published effective date. Some of it is a settlement still awaiting a judge's signature. Both matter. Only one of them belongs in a locked budget line.

What's already locked in for buyers

Apple's revised EU business terms, announced in June, take effect on January 1, 2026: a 5 percent Core Technology Commission replaces the per-install Core Technology Fee for developers who opt into the new terms, alongside tiered store services fees. The Coalition for App Fairness has called the structure non-compliant with the Digital Markets Act, and that argument will keep running through European courts well into 2026, but the terms themselves have a date and a public text; they aren't speculation. Any studio with meaningful EU iOS revenue should have modelled both the old and new fee structures against its own catalogue before the switch, not after the January invoice arrives.

Japan's Mobile Software Competition Act reaches full effect on December 18, with Apple and Google required to open alternative app stores and payment options to Japanese users. This is a smaller market than the EU story but a cleaner one. The compliance date won't move, and the operative question for a buyer isn't whether it happens but how quickly measurement and payment flows adapt once it does. Google's own retirement of most remaining Privacy Sandbox APIs, confirmed in October after the UK Competition and Markets Authority released the company from its earlier commitments, sits in the same locked category rather than the predicted one. Chrome's cookie-based targeting future is a known quantity for 2026; what remains open is how much of the ecosystem actually rebuilt around Sandbox in the meantime, and that number looks smaller than the original timeline assumed.

The unresolved platform fight: Google, Epic and the shape of Play

The most consequential open question for 2026 has no confirmation behind it at all. Google and Epic proposed a settlement in early November that would cut Play Store fees to a range of 9 to 20 percent and register rival app stores globally, a much broader remedy than the US-only relief the injunction currently requires. Judge Donato has voiced scepticism about parts of the proposal, and resolution has already slipped into 2026. A buyer reading headlines about "Google's new Play fees" should notice the tense problem: those fees do not exist yet, they exist in a document a federal judge has not approved. The prediction worth making here is modest. Expect the broad direction to hold, lower take rates alongside wider store access, because the injunction's US requirements are already in force and a global settlement mostly extends a pattern already underway. The specific percentages, and the timeline for global rollout, remain the part to treat as unresolved through at least the first quarter of 2026.

Ad tech's two migrations: Unity Vector and the ironSource question

Unity's Vector ad model, unveiled at GDC in March and still expanding through the second half of the year, is the platform's clearest 2026 story: continued migration of Grow Solutions inventory onto the rebuilt system, with management describing the transition as reaching an inflection point rather than a finished job as recently as its Q3 update. The open prediction sitting underneath that migration is what happens to the ironSource brand itself. Trade chatter has increasingly treated a formal retirement of the ironSource network wrapper, folding whatever remains of it fully into Vector, as likely in 2026, though Unity has announced nothing. If that consolidation happens the way the market currently expects, it removes one more legacy brand a buyer has to keep separate line items for. It's also exactly the kind of headline nobody should plan against until Unity actually says so on an earnings call, in the same way this desk argued in Ad Network Q4 Guidance and What It Signals for Buyers that guidance language deserves more weight than the topline number attached to it.

A framework for stress-testing any 2026 prediction

Before adjusting a budget around any prediction circulating in December trade coverage, run it through a short filter. Does it carry a published date, whether a regulatory deadline or an earnings-confirmed rollout, or is the date itself part of what someone is predicting? Whose statement does the prediction rest on: a court filing, a company's own guidance, a journalist's sourcing on a deal still in negotiation? Does the prediction depend on a body that hasn't ruled yet, whether it is waiting on a settlement, on an appeal, on a vote? And would acting on the prediction now cost more if it turns out to be six months early than waiting would cost if it turns out to be right on schedule? Predictions that fail the first two questions, no fixed date, resting on sourcing rather than a filing, belong in a watch list rather than a Q1 budget.

What actually changes for buyers versus what doesn't

Running the year's biggest 2026 UA predictions through that filter produces an uneven picture. Apple's EU fee structure has a date, and so does Japan's app store opening; both belong in Q1 planning now. The Google-Epic settlement and the ironSource brand question are directionally likely but procedurally unresolved, so they belong in a watch list with a specific trigger, a judge's ruling, a company's own announcement, that moves them into the planning column the moment it happens. The habit matters more than any single prediction: treat a court filing and a press rumour as different categories of evidence, no matter how similar they sound in a year-end roundup, and let a budget move only when the category changes from open to confirmed.

Related archive reading

These articles provide related context and remain subject to their stated review status.

• Operating Brief: What Gamescom's UA Budget Signals Meant
• The Ledger #16: Devcom Opens, Gamescom Week Begins