Most advertising identity systems still run on educated guesses.

That’s not an exaggeration. It’s the reality the industry has quietly accepted for years. Cookies get blocked. Device IDs don’t follow users across platforms. IP addresses are unreliable by design. What you’re left with is a patchwork of signals that look precise on dashboards but fall apart the moment real money is involved.

According to the 2025 State of the Industry report, only 21% of brands, agencies, and publishers say they are very confident in their ability to accurately identify and reach their audiences across digital channels. That’s not a small inefficiency. That’s a structural weakness.

Now, PayPal is stepping directly into that gap with something it believes can reset the conversation: PayPal Ads ID.

And unlike most identity solutions, this one doesn’t start with tracking. It starts with transactions.

From signals to transactions

Here’s the core shift, and it’s a big one.

Most identity frameworks today are probabilistic. They infer who you are based on behavior patterns, browsing signals, or device activity. It’s clever, but it’s still inference.

PayPal is going deterministic.

PayPal Ads ID is built on verified commerce relationships across the PayPal ecosystem, including Venmo. In simple terms, it uses the same accounts people rely on to actually spend money. That changes the quality of the signal entirely.

Because when identity is tied to a real transaction, you’re no longer guessing. You’re working with confirmed user behavior.

“Identity is the foundation everything else in advertising is built on. For too long, that foundation has been guesswork,” said Mark Grether, SVP & GM of PayPal Ads. “PayPal Ads ID changes that. When your identity layer is built on verified commerce relationships, you’re no longer estimating who someone is, you’re reaching them with confidence. That is the PayPal Transaction Graph at work.”

That last part matters. The “Transaction Graph” is essentially PayPal’s way of saying: we understand not just who users are, but what they actually buy, across environments.

Why this actually matters for advertisers

This isn’t just a technical upgrade. It’s a shift in how performance gets measured and optimized.

Because the biggest issue with current identity systems isn’t targeting. It’s what happens after.

In other words, this isn’t just about finding users. It’s about finally proving what worked.

The scale advantage no one else has

Let’s be clear. The reason PayPal can even attempt this is scale.

The PayPal ecosystem spans roughly 200 markets, tens of millions of merchants, and hundreds of millions of active accounts. That creates something most identity providers don’t have: a continuous, real-world view of consumer behavior tied to actual spending.

The PayPal Transaction Graph aggregates signals across how people browse, shop, and pay. It doesn’t just capture intent. It captures action.

That distinction is critical. Intent signals are everywhere. Purchase signals are not.

Privacy, but not the usual kind

Of course, any identity solution today lives or dies on privacy.

PayPal is positioning Ads ID as privacy-first, but in a very specific way. The identifier is encrypted, aggregated, and deidentified. Advertisers don’t get access to raw transaction data, merchant names, or sensitive details.

Users also retain control, with the ability to manage participation.

This is important because the industry is moving away from surveillance-based models toward consent-driven frameworks. Regulators, browsers, and platforms are all pushing in that direction. PayPal is aligning with that shift rather than fighting it.

Whether that balance between utility and privacy holds in practice will depend on execution, not positioning.

Early partners signal where this is going

PayPal isn’t launching this in isolation.

Initial integrations include players like Magnite, PubMatic, Rokt, and Taboola. That’s a mix of programmatic, commerce media, and content distribution.

Which tells you exactly where this is heading.

Not just performance marketing. Not just retail media. But a broader push into commerce-driven advertising across the open web, CTV, and native environments.

This is PayPal trying to become more than a payments company. It’s positioning itself as an identity and data layer for digital advertising.

What this means in a broader industry

context

PayPal isn’t the first to try solving identity.

The Trade Desk has UID2. Google is pushing Privacy Sandbox. Amazon has its own commerce-driven ad ecosystem. Retail media networks are building identity layers based on shopper data.

But most of these approaches either depend on publisher cooperation, logged-in environments, or modeled signals.

PayPal’s angle is different.

It sits at the point where money actually moves.

That’s closer to what Amazon has built, but without being tied to a single marketplace. And unlike UID2 or cookie alternatives, it doesn’t rely on email matching or browser-level tracking.

If it works, it could become one of the few identity layers grounded in real-world economic activity rather than digital behavior alone.

The real shift is not technical. It’s structural.

The advertising industry has spent years trying to fix identity with better tracking.

PayPal is effectively saying: stop tracking better. Start anchoring identity in transactions.

If that model scales, it changes how value flows.

Platforms that control purchase data become more powerful than those that control attention. Measurement shifts from probabilistic attribution to verifiable outcomes. And advertisers start optimizing around real revenue signals instead of proxies.

For travel, fintech, and eSIM players especially, this should feel familiar.

You already sit on high-intent, transaction-level data. The difference is whether you use it just to process payments or to build a smarter layer around your users.

PayPal is showing what happens when you choose the second option.

Conclusion

The real story here isn’t that PayPal launched another ad product. It’s that identity in advertising is quietly moving closer to commerce infrastructure.

We’ve seen early versions of this with Amazon’s retail media dominance and with closed ecosystems that tie ads to purchases. What PayPal is attempting is to extend that logic beyond a single platform into a more open, cross-environment identity layer.

That’s harder to execute, but potentially far more powerful.

If PayPal Ads ID delivers on its promise, it won’t just improve targeting or attribution. It will shift where trust in advertising comes from. Not from models, not from signals, but from actual economic activity.

And that raises a bigger question the industry hasn’t fully answered yet:

If identity is best defined at the moment of purchase, what happens to everyone who doesn’t control that moment?

That’s where the next competitive gap will open.