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Meta changed how it counts your Facebook conversions in March
Meta changed what counts as a click for attribution in March 2026. If your Facebook or Instagram conversions look lower than they did six months ago, the definition changed, not your results.
A yoga studio on College Ave cut their Facebook ad budget by 30 percent in March. Their conversions had dropped by half. Their classes were still full. Their waitlist had not changed.
They paused the campaigns. The waitlist kept growing from other channels. Then they called me.
Their ads had not stopped working. Meta had changed how it counts conversions.
In March 2026, Meta narrowed what qualifies as a click for click-through attribution. Only link clicks count now. A click that sends someone to your website, your booking page, your lead form, or your app. If someone liked your ad, saved it, shared it, or watched five seconds of your video and then bought from you three days later, that used to be a click-through conversion. Under the new rules, it is not.
What changed about Meta's attribution?
Before March, Meta bundled engagement actions into click-through attribution. Any interaction with your ad could count. A heart tap on a Tuesday followed by a purchase on Friday was a conversion in your report.
Meta split this into two categories.
Click-through attribution counts conversions that followed a real link click, someone tapping through to your destination. Default window is seven days.
Engage-through attribution counts conversions that followed a non-link interaction: a like, a save, a share, or a video view of at least five seconds. The window for this is one day.
Billing did not change. Meta still charges per impression and per link click. The update only changes how Meta labels outcomes in Ads Manager.
Why did some conversions disappear from your report?
This is the part that confuses people most.
Before, if someone liked your ad on Monday and bought on Thursday, it counted as a click-through conversion under the seven-day window. Now it moves to engage-through. But engage-through only has a one-day window. Monday to Thursday is four days. That conversion falls outside both windows. It disappears from your report.
Your revenue did not change. Your report did.
The size of the drop depends on your campaign type. Shops running lead generation ads, where someone clicks a button to call or fill out a form, will see a small change. Those campaigns already relied on link clicks. Shops running boosted posts, reach campaigns, or video ads will see a larger reported drop. Those campaigns leaned on engagement actions.
Neither means the ads stopped working.
What numbers should you track instead?
Three that still mean something.
Cost per link click. This metric did not change. It tells you what you paid per person who tapped through to your destination. If it is stable, your ads are delivering at the same efficiency they were six months ago.
Link click-through rate (CTR). Also unchanged. It tells you what share of people who saw your ad clicked through. If this held, your creative is still working.
Real-world outcomes. Pull your bookings, calls, or sales from whatever system you use to track them. If those numbers held through the period when your Meta report dropped, you have your answer. Your ads worked. The report just reclassified the credit.
Your billing didn't change. Your performance probably didn't either. What changed is how Meta labels the outcome.
One setting worth changing in Ads Manager: go to Columns, select Customize Columns, and add "Link clicks" and "Engage-through conversions" as separate columns. Set your attribution window to "7-day click, 1-day engage-through" explicitly. That gives you a cleaner read than the default blended view.
Four minutes. If you are spending $300 a month on Meta ads, that is worth four minutes.
The yoga studio owner restarted their campaigns two weeks ago. Same budget, same creative. Class bookings are running at the same rate they were in February. The only thing that changed in March was their report.
Sources
- Simplifying Ad Measurement for a Social-First World : Meta's official March 2026 announcement of the click attribution update.
- Meta Click Attribution in 2026: Only Link Clicks Count Now : What changed in click-through vs. engage-through and the new category definitions.
- Meta Attribution Change 2026: What Engage-Through Attribution Is : Which conversions disappear under the one-day engage-through window.
- How Meta Ads Attribution Works in 2026 : Campaign-type breakdown of who sees the biggest reported drop.