Meta Ads Measurement: Attribution Window Comparison
Which Meta attribution window should I use?
Compare the settings actually selectable in your account against frozen exports, because each window credits a different set of conversions while your recognised revenue stays exactly the same. The choice changes what the platform claims credit for, not what the business actually earned that period.
For the surrounding account decisions, compare Meta Ads Measurement: Attribution and Incrementality and use Meta Ads Funnel Stages: A Measurement Architecture as the next diagnostic.
In short
This guide owns one decision artifact: the filled, auditable structure below. Reader-supplied thresholds stay explicit; missing evidence stays missing.
Window matrix
Export every click-through and view-through setting actually selectable in the operator’s account; availability can vary, so this matrix does not declare a universal default.
| Available setting row | Interaction type | Configured window | Time basis recorded | What it credits | What it recognizes | Limitation |
|---|---|---|---|---|---|---|
| Click setting A | Click | Exact selectable value copied from the ad-set configuration | Conversion occurrence time, plus report extraction time | Outcomes Meta assigns after a qualifying click inside setting A | Platform-attributed outcomes under that setting | Credit is not incremental lift and can differ from analytics attribution |
| Click setting B, if selectable | Click | Second exact selectable value; omit row if unavailable | Same conversion-time basis and extraction timestamp as row A | Outcomes assigned after a click inside setting B | The incremental credited set versus A | A wider credit rule can change the report without changing commerce revenue |
| View setting A | View without a credited click | Exact selectable value copied from configuration | Conversion occurrence time, plus impression and extraction timestamps | Outcomes Meta assigns after a qualifying impression inside setting A | View-through platform attribution | View credit can overlap demand visible in other systems |
| View setting B, if selectable | View without a credited click | Second exact selectable value; omit row if unavailable | Same basis as view row A | Outcomes assigned inside setting B | The incremental credited set versus view row A | Never compare rows extracted at different times |
Window-credited share = (recognized orders credited under the named setting) ÷ (recognized orders eligible in the same conversion window). Source/window: Meta attribution export joined to the commerce order ledger for one conversion cohort. Limitation: assignment of credit is not causation.
Paid ROAS for setting A = (Meta-attributed revenue under setting A) ÷ (Meta spend in the identical scope). Source/window: one frozen Meta export. Limitation: changing the setting changes attribution, not necessarily recognized revenue.
Interpretation boundary
Use the selectable click/view window rows only for its stated decision. Copy each setting actually available in the account and compare frozen exports on the same conversion-time and extraction-time basis. The comparison is invalid when settings or extraction times differ; credited revenue remains attribution, not lift. Reader-supplied thresholds remain inputs, not universal standards.
Where implementation depends on Meta behavior, re-check Meta’s current Business Tools Terms and linked product documentation before release; accessed 2026-08-27. The tables below are operator contracts unless a primary Meta source is linked.
Documented thresholds
Meta publishes the figures below; they are reproduced here with the article they come from. Retrieved 2026-09-22 — Meta revises this documentation without notice, so verify anything load-bearing against the current version before you act on it.
- The 28-day trap. Meta notes that a campaign live for fewer than 28 days shows only partial data in the 28-day click column, covering the campaign’s length. It looks like a longer window and is a shorter one mislabelled.
- The default window. Meta documents 7-day click or 1-day view as the default for all new ad sets. The selectable alternatives are 1-day click, 7-day click, and 1-day click or 1-day view.
- A wider window reallocates credit, it does not create revenue. Take $5,000 of spend credited with 100 conversions on 1-day click — a reported $50 cost per result. If 7-day click credits the same spend with 140, reported cost falls to $35.71, an apparent 28.6% improvement with no additional sale.
Source: Meta Business Help Centre — https://www.facebook.com/business/help/854500742637772, https://www.facebook.com/business/help/1997130013754737.
Can software help?
Bach.ai audits your connected Meta account, estimates the revenue impact of what it finds, and proposes specific fixes. It applies a change only after you approve it. Think of it as an automated audit layer that surfaces issues and proposed fixes for your review — not a replacement for your team’s judgment, and creative production is not its core job, though the Pro and Agency plans can generate a limited number of variants.
FAQ
How do you compare Meta attribution windows on a fair basis?
Copy each setting actually available in the account and compare frozen exports on the same conversion-time and extraction-time basis.
When is an attribution-window comparison invalid or inconclusive?
The comparison is invalid when settings or extraction times differ; credited revenue remains attribution, not lift.
What can a window comparison tell you about revenue, and what can’t it?
It supports the bounded operating choice encoded by the selectable click/view window rows. It cannot replace missing source records or turn platform credit and observed association into incremental impact.
Method and sources
“Compare the settings actually selectable in your account against frozen exports, because each window credits a different set of conversions while your recognised revenue stays exactly the same.”
Source: Where this guide describes platform behaviour, it follows Meta’s published advertising and Marketing API documentation, which changes without notice — verify anything load-bearing against the current version before you act on it. Every threshold the guide asks you to supply is first-party, drawn from your own account exports and commerce ledger, because no external benchmark can stand in for your own margin structure.