Important news from Meta affecting your CPA and ROAS!

During March, Meta is rolling out a significant update to Ads Manager that changes the foundation of how we measure conversions. At first glance, the numbers in your dashboard may look more grim, but at Iternum Digital, we see this as positive news for your data quality and your future advertising. Here is everything you need to know about the new attribution rules and why you shouldn’t panic.

medarbejderbillede-2024-Daniel_endelig
Social media consultant
March 10, 2026
If you notice your CPA (Cost Per Acquisition) suddenly rising and your ROAS (Return on Ad Spend) falling at the end of March, do not panic. Your advertising likely hasn’t become worse overnight. Meta has simply changed the way they count your results.

Here is everything you need to know about the new attribution rules and why they are positive news for your long-term growth.

What is happening?

Meta has introduced major adjustments to how they count conversions. Previously, the system was very “generous” regarding what it counted as a success. If a user saw your ad, clicked on your profile, or perhaps just interacted with a comment and then ended up buying 7 days later, Meta would celebrate and say: “That was us!”.

This often resulted in “over-attribution”—an artificial inflation of results that might have found their way to your webshop anyway. Now, the party where everyone gets a medal is over. Meta is tightening up.

1. No more "free" success on secondary clicks

Previously, Meta counted almost any interaction as a positive signal for the attribution window. Now, only direct clicks on links or CTA buttons (e.g., “Buy Now”) count. This means that “random” clicks on your profile picture or the “see more” link no longer automatically open the attribution window. The result? Fewer, but far more intentional conversions.

2. From "Engaged-view" to "Engage-through"

The engagement category is now called “Engage-through” and gathers all social interactions and video views. A vital detail here is that the video threshold has been lowered from 10 seconds to 5 seconds. This is because Meta sees that 46% of conversions on Reels happen within the first 2 seconds of attention.

Previously, the window for engagement-based conversions was often 7 days. Now, it is a maximum of 24 hours. If a user watches your video and interacts but only purchases 3 days later, Meta will no longer take the credit.

Metas new 3 attribution types

From March 2026, your results will be divided into three clear categories to ensure transparency. If a user views your ad without interacting and still converts within 24 hours, it will be attributed under the “View-Through” category. Other conversions will be attributed as follows:

Action
Old system (before)
New system (after)
Link click
Click-conversion
Click-Through
Like
Click-conversion
Engage-Through
Save
Click-conversion
Engage-Through
Share
Click-conversion
Engage-Through
Comment
Click-conversion
Engage-Through
Video (5+ sec.)
Engaged-view (10 sec.)
Engage-Through (5 sec.)

Why is this good news?

It may seem contradictory to say that “worse” numbers are good news. But think about it: Would you rather have KPIs that look pretty in a report, or would you rather have the truth about how much your ad spend actually contributes to the bottom line?

1. Goodbye to over-attribution, hello to reality

By cutting away unnecessary conversions, we gain much better data insight into how the business is actually performing. We move closer to the truth and further away from over-attribution. This means the budgets we manage are now being tested against reality.

2. Better signals for the algorithm

When we send cleaner data to Meta’s algorithm, the final result improves. The algorithm stops focusing on “click-happy” users who don’t buy and starts finding the people who actually have purchasing intent.

3. Content is the new king (The Andromeda Effect)

This change puts a serious spotlight on your content. It aligns perfectly with Meta’s “Andromeda” rollout, where the focus shifts from technical “hacking” of the algorithm to the quality of your content and creatives.

When tracking possibilities become more precise and limited, your ability to capture attention and drive action through your content is what counts. If your content isn’t sharp enough to get people to click and buy immediately, you can no longer “hide” behind soft metrics or long attribution windows. It requires us to be even sharper with the content delivered.

What should you do now?

1. Understand the changes

Accept that your benchmarks from last year are no longer directly comparable. We are comparing apples to oranges if we look backward.

2. Optimize based on a new data foundation

We should not just accept higher CPAs but proactively optimize our campaigns based on the new, more precise data. This requires a sharper analysis of what actually drives the business forward.

3. Focus on creatives

Invest in content that stops people in their scroll. This is where the battle is won in today’s landscape.

Are you unsure how your setup is performing after the new changes?

Navigating a landscape that constantly changes can be difficult. At Iternum Digital, we specialize in creating transparent and high-performance growth for our clients.

Would you like an analysis of your current setup and strategy?

We are currently offering a free review of your ad account to see how these changes affect you and where your greatest opportunities lie.

Senior Social Media Consultant

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