Category: Positive Sparks News
Let’s be honest: we’ve all been staring at our Meta Ads dashboard, seeing a ROAS of 6.0, and then looking at our bank balance and thinking, “Where’s the money, Lebowski?”
We’ve spent the last decade obsessed with granular attribution. We wanted to know exactly which click, on which specific ad, at 2:43 PM on a rainy Tuesday, led to Sarah from Sheffield buying that organic face cream. We wanted a straight line from "Seen" to "Sold."
But let’s face it: the straight line was always a bit of a myth. And in a post-cookie, high-privacy world, that myth is officially busted. If you’re still trying to track every individual leaf on the tree, you’re missing the fact that the whole forest might be on fire.
At Positive Sparks, we’ve seen the shift firsthand. The conversation in performance marketing is moving away from "Who gets the credit?" and toward "Did this ad actually make me more money?"
Welcome to the era of incrementality.
The Great Attribution Lie
Have you ever wondered why, if you add up the sales reported by Meta, Google Ads, and your email software, you end up with 300% of your actual revenue?
It’s because every platform is a credit-hog. They all want to look like the hero. Standard attribution in Meta Ads for ecommerce is notorious for overstating performance. Why? Because it credits ads for conversions that would have happened anyway.
Think about it. If someone is already a fan of your brand, they might see an ad, scroll past it, and then go to your site via a bookmark to buy. Meta sees that "impression" and says, "Yep, that was me! Give me the trophy!"
Recent research has shown some pretty shocking discrepancies. In one case study, Meta reported a cost-per-order (CPO) of €0.54. Sounds amazing, right? We’d all retire on those numbers. But when the team looked at the true incremental cost, the cost of the sales that literally wouldn't have happened without the ads, it was actually €2.07. That is a 4x difference.
What Is Incrementality (And Why Should You Care)?
So, what is incrementality? In simple terms, it’s the measure of sales that only happened because of your marketing efforts.
Imagine you turn off your ads for a week. You’d still get some sales, right? Those are your "baseline" sales. Incrementality is everything above that baseline.
In the world of direct to consumer marketing, we’ve been blinded by "attributed" ROAS for too long. Incrementality is the cold, hard truth. It’s the difference between correlation (someone saw an ad and then bought) and causation (someone saw an ad and therefore bought).
Why the Shift is Happening Now
Let’s bear in mind that the old way of tracking, granular, user-level, cookie-based, is dying. With iOS 14.5 and the eventual phasing out of third-party cookies, the "data" we’re getting is becoming more modeled and less certain.
Trying to get granular now is like trying to paint a portrait with a broom. It’s messy, and it’s probably wrong. This is why we’re helping our clients unlock the power of 3rd party attribution apps and focusing on the bigger picture.
Meta’s "New" Solution: Is It Legit?
Meta isn't blind to this. They’ve introduced an "Incremental Attribution" setting that aims to measure the conversions that wouldn't have happened without the ads. They do this by comparing a group of people who saw your ads against a "holdout" group who didn't.
Our research shows some enticing numbers for those who use it:
- 57% better ROAS reported in early testing environments.
- 94% increase in incremental ROAS.
- Access to retroactive data as far back as April 1, 2025.
But, and this is a big "but", you shouldn't treat Meta's internal incrementality numbers as gospel truth. In one test, Meta claimed that 87% of conversions were incremental. However, when cross-checked with GA4 (which is usually more conservative), the number was actually closer to 67%.
That 20-point gap is where your profit goes to die if you aren't careful.
The Retargeting Trap
Are you spending 40% of your budget on retargeting people who visited your site in the last 48 hours? If so, you’re likely flushing money down the toilet.
Retargeting is the king of "low incrementality." These people already know you. They were probably going to buy anyway. When we look at performance marketing through an incremental lens, we often find that:
- Broad targeting actually has higher incrementality than we thought because it finds new customers.
- Mid-funnel audiences (people who know of you but aren't obsessed yet) often show the clearest incremental impact.
- Hyper-narrow retargeting often has the lowest incrementality. You're just paying Meta to show an ad to someone who was already reaching for their wallet.
How to Navigate This (Without Losing Your Mind)
You’re probably thinking, "Phil, this sounds complicated. Do I need a math degree to run ads now?"
Not at all. You just need to change your perspective. Here is our "Positive Sparks Playbook" for moving from granular obsession to incremental growth:
1. Stop Chasing the "Perfect" Pixel
Accept that your dashboard will never be 100% accurate. Instead of looking for perfect data, look for trends. If you increase spend by 20% and your total business revenue (not just "attributed" revenue) goes up by 15%, you’re winning. If it stays flat, your ads aren't incremental.
2. Use Multiple Data Sources
Don’t just trust Meta. And don't just trust Google. Use a "triangulation" method. Look at Meta Ads Manager, GA4, and a dedicated tool like TrueROAS. When all three agree that a campaign is working, it’s working.
3. Run Your Own "Blackout" Tests
Occasionally, try the "Geo-lift" method. Turn off ads in one specific region (like Manchester) for two weeks while keeping them on in a similar region (like Birmingham). The difference in total sales between those two cities is your true incrementality. It’s bold, it’s a bit scary, but it’s the only way to find the "Ground Truth."
4. Focus on the Mid-Funnel
Since mid-funnel audiences often show the best incremental lift, focus your creative efforts there. This is where you actually change minds and create new customers, rather than just harvesting the ones that were already there.
The Q&A: Your Burning Attribution Questions
Q: Does this mean I should stop using Meta’s standard pixel tracking?
A: No! We still need that data for Meta’s AI to optimize. But you should stop using it as the only measure of your success. Think of it as a compass, not a GPS.
Q: How do I explain this to my stakeholders who want to see a 5.0 ROAS?
A: Education is key. Show them the discrepancy between platform data and actual bank deposits. Explain that a "lower" incremental ROAS of 2.0 is often more valuable than a "fake" 10.0 ROAS from retargeting. We actually talk about this a lot when we explain how our fees work: we’re incentivized to grow your business, not just pump up dashboard numbers.
Q: Is GA4 better for measuring incrementality?
A: GA4 is more conservative because it doesn’t "see" the same way Meta does. It’s a great reality check, but even GA4 has its limits in a post-cookie world. If you’re struggling with the move, check out our guide on migration from UA to GA4.
Actionable Takeaways for Your Next Campaign
- Check your settings: Go into Meta Ads Manager and see if you have access to the Incremental Attribution features.
- Audit your retargeting: Look at your "View-Through" conversions. If 80% of your sales are view-throughs on a 1-day window, you have an incrementality problem.
- Diversify your spend: If you’re a heavy Meta spender, consider how direct to consumer marketing works across channels. Sometimes the most incremental thing you can do is start influencer marketing to feed the top of the funnel.
- Set a "North Star" Metric: Move away from ROAS and look at MER (Marketing Efficiency Ratio): Total Revenue divided by Total Ad Spend. It’s the only number that can’t be faked.
The Bottom Line
Granular attribution was a comfort blanket. It made us feel like we were in total control. But the truth is, ecommerce is more about "waves" than "clicks."
Incrementality is about understanding the power of your brand and your message. It’s about making sure that every pound you spend is actually moving the needle, not just paying for a seat at a table you were already sitting at.
At Positive Sparks, we’re visionary because we look past the dashboard fluff. We want to see your business grow in the real world, not just in a spreadsheet.
What about you? Have you noticed a gap between your Meta reports and your actual bank deposits lately? Are you brave enough to run a "blackout" test to find your true incrementality?
Let’s chat about it in the comments, or if you’re ready to stop guessing and start growing, speak to us today. We’ll help you find the sparks that actually catch fire.
