Why your dashboard lies about your ROAS
Nicklas Segatz Mortensen · Growth Hacker · Fractional CMO · Meta Ads Nerd · 8 July 2026 · 5 min.
01Why the numbers can't add up
Have you ever added up Meta's, Google's and TikTok's reported revenue and found a number bigger than your actual revenue? You're not alone — and it isn't a spreadsheet error. It's how attribution works: each platform credits itself for the same sales with its own generous windows.
Combined with Meta's default window of 7-day click and 1-day view — where even a view without a click can trigger credit — the attributed ROAS gets systematically inflated. The dashboard isn't lying on purpose; it's just showing each channel's own, inflated version of reality.
02What to trust instead
The solution isn't to find the "right" attribution model — they all have a built-in bias. The solution is to supplement with metrics that can't be inflated: MER (total revenue against total spend) tells you whether the whole machine makes money, and incrementality tests tell you what a channel actually created.
Use attribution for direction, not for a verdict. Read the individual channels' ROAS as indicators, but make budget decisions on the total. That's the difference between optimizing a dashboard and optimizing your bank account.
Frequently asked questions
Why does the sum of my channels' ROAS exceed my actual revenue?+
Because each platform credits itself for the same sales with its own generous conversion windows — they double-count. Add up their reported revenue and you're counting the same orders several times.
What should I trust instead of platform ROAS?+
MER (total revenue against total spend), which can't be inflated by attribution, supplemented with incrementality tests for the big decisions. Use attribution for direction, not for the final verdict.
Related terms
Glossary
What is an attribution window?
An attribution window is the time period after a click or view within which a subsequent conversion is credited to the ad. Meta's default is 7-day click and 1-day view.
Read the entry →Glossary
What is attribution?
Attribution is the method that distributes the credit for a conversion across the touchpoints the customer met along the way. The model decides which channel gets the credit — and therefore where budget flows.
Read the entry →Glossary
What is MER?
MER (Marketing Efficiency Ratio) is your total revenue divided by your total marketing spend across every channel. It ignores the platforms' own attribution and shows how efficiently the whole marketing machine is working.
Read the entry →Glossary
What is incrementality?
Incrementality is the added effect a marketing effort creates: the sales that happened only because the ad ran. Sales you'd have gotten anyway aren't incremental — whatever the platform credits.
Read the entry →
Nicklas Segatz Mortensen
Growth Hacker · Fractional CMO · Meta Ads Nerd at Oaksmond
Growth hacker and fractional CMO with 10+ years' experience and hundreds of millions in managed ad spend behind him. Background from larger Danish and international scale-ups, and from the agency world.
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