Blended ROAS
Blended ROAS (also called Total ROAS or Media Efficiency Ratio) measures your overall advertising efficiency across all paid channels combined. Instead of looking at each platform separately, it provides a unified view of how much revenue you generate for every dollar spent on all advertising.
Calculate Your Blended ROAS
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Formula
Blended ROAS = Total Revenue ÷ Total Ad Spend (All Channels)Where:
Total Revenue=All revenue from your business, not just tracked conversionsTotal Ad Spend=Combined spend across all advertising platformsExample
Scenario
Your business generated $200,000 in revenue. You spent $30,000 on Google Ads, $20,000 on Meta Ads, and $10,000 on LinkedIn Ads.
Calculation
Blended ROAS = $200,000 ÷ ($30,000 + $20,000 + $10,000) = 3.33Result
Your blended ROAS is 3.33x, meaning you earn $3.33 for every $1 spent across all ad channels.
When to Use Blended ROAS
- 1Understanding overall advertising efficiency when platform attribution conflicts
- 2Compensating for iOS 14.5 and privacy-related tracking gaps
- 3Making holistic budget allocation decisions
- 4Reporting total advertising ROI to leadership
- 5Benchmarking overall marketing efficiency over time
Common Mistakes
- ✗Ignoring organic and brand contributions to revenue
- ✗Not accounting for seasonal fluctuations in revenue
- ✗Using blended ROAS alone without channel-level insights
- ✗Comparing blended ROAS across businesses with different revenue models
When Platform ROAS Doesn't Add Up
It's common for the sum of platform-reported revenue to exceed actual revenue - sometimes by 2x or more. This happens because:
- Multiple platforms take credit for the same conversion
- Different attribution windows capture different portions of the journey
- View-through vs. click-through attribution differences
Blended ROAS solves this by grounding measurement in reality: actual revenue and actual spend.
Frequently Asked Questions
Why use blended ROAS instead of platform-specific ROAS?
Platforms over-report due to overlapping attribution. A customer might be counted by both Google and Meta. Blended ROAS gives you the true picture by looking at actual revenue against total spend.
What is a good blended ROAS?
It depends on your margins and business model. E-commerce typically targets 3-4x blended ROAS. Businesses with higher margins or LTV can sustain lower blended ROAS profitably.
How does iOS 14.5 affect blended ROAS?
Privacy changes reduced platform-reported conversions, making individual ROAS unreliable. Blended ROAS uses total revenue instead of tracked conversions, bypassing attribution limitations.
Should I still track channel-specific ROAS?
Yes, channel ROAS helps with tactical optimization. But use blended ROAS for strategic decisions and budget planning, and trust it more than conflicting platform numbers.
Related Terms
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