Engage-Through Attribution
A Meta attribution bucket that counts conversions driven by non-link ad interactions — likes, shares, saves, comments, and 5-second video views — within a 1-day window, separate from click-through.
Your click-through conversion count dropped in Ads Manager after March 3, 2026. Your ads didn’t stop working — Meta reclassified how it counts them. Non-link interactions (likes, reactions, shares, saves, comments, and video views of five or more seconds) moved out of click-through and into a separate one-day window called engage-through attribution.
The window matters as much as the category. A user who likes your ad on Monday and purchases on Wednesday falls outside both buckets — too late for the one-day engage-through window, not a link click. Those conversions disappear from reporting entirely.
How it shows up in the wild
Meta for Business (platform-level test, January–June 2024): Across 45 advertisers in 11 verticals spanning North America and EMEA, accounts using incremental attribution reported more than 20% improvement in incremental conversions versus standard attribution. Meta cited these results as the basis for the March 2026 attribution overhaul. The same March 2026 update halved the video view threshold for engage-through from 10 seconds to 5 — meaning more video interactions now trigger an engage-through window than before.
Seer Interactive (6 accounts, April 2025): Across $1.05 million in ad spend, Meta reported 87% of conversions as incremental — only 13% would have happened without the ads.
When Seer cross-validated against GA4, the incremental share fell to 67%. The 20-point gap held across campaign types, with broad targeting and narrow retargeting segments showing the weakest lift — the accounts most likely to be catching users who would have converted anyway.
Dataslayer (reporting analytics platform, post-March 2026 analysis): Click-through conversions dropped 40–60% month-over-month in many accounts after the attribution change, while total conversions across both categories barely moved. The distribution between click-through and engage-through shifted dramatically — underlying performance did not. Accounts comparing CPA or ROAS from February to April 2026 without separating the two buckets were reading a methodology change as a campaign decline.
Why it matters
The default attribution setting Meta now uses is 7-day click-through, 1-day engage-through, 1-day view-through — three separate windows reported in the same conversion column unless you break them out manually. My hunch is that most D2C accounts running video or social-format creatives are now counting engage-through conversions without realizing they are in a distinct and much shorter window.
Any benchmarking against pre-March 2026 CPA data requires adjusting for the reclassification first. I think the more persistent risk is a comparison error: Ads Manager totals look similar to historical levels, but the composition has changed in ways that matter for LTV modeling and bid strategy.
Related terms
- Attribution Window — the time period over which Meta assigns a conversion to an ad interaction
- Cross-Channel Attribution — how conversions are split across Meta, Google, and other platforms
- Marketing Efficiency Ratio — the cross-channel metric less susceptible to attribution reclassification than per-channel ROAS
- ROAS — the metric most directly distorted by engage-through reclassification
- Meta Advantage+ Shopping Campaigns — the campaign type where engage-through attribution is most likely to appear alongside view-through conversions
Frequently asked questions
Did my ads actually perform worse after March 2026? Probably not. Total conversions across click-through and engage-through combined remained roughly stable after the change. The decline in click-through numbers was reclassification. The exception is conversions from non-link interactions that previously fell within a 7-day click window but now fall outside engage-through’s 1-day window — those are genuinely gone from attribution.
Should I add engage-through to my custom reports? Yes, but separately. Build a column for click-through conversions and a second for engage-through conversions rather than combining them in a total. A 7-day click signals deliberate consideration; a 1-day engage-through may behave more like view-through in its conversion dynamics.
Does billing change if Meta reclassifies a conversion to engage-through? No. Meta confirmed the attribution change affects only how conversions are classified in Ads Manager — not what you are charged. You are billed the same regardless of which column a conversion lands in.