CM4 ROAS measures how much operating profit you earn for every dollar spent on advertising—the ultimate ad efficiency metric.
CM4 ROAS = CM4 ÷ Ad Spend
| Metric | Definition |
|---|
| CM4 (Operating Profit) | Profit after all costs including OPEX |
| Ad Spend | Total advertising spend across platforms |
| Metadata | |
|---|
| Type | Multiplier |
| Data Source | Shopify, Meta Ads, Google Ads |
| Aggregation | Ratio |
Example
Your Shopify store has $20,000 CM4 and spent $25,000 on advertising.
| Component | Value | Calculation |
|---|
| CM4 | $20,000 | Operating profit |
| Ad Spend | $25,000 | Advertising cost |
| CM4 ROAS | 0.8x | $20,000 ÷ $25,000 |
How It Works
CM4 ROAS shows true operating profit per ad dollar after all costs. A 0.8x CM4 ROAS means each ad dollar generates only $0.80 in operating profit. CM4 ROAS below 1x indicates ads don’t fully cover their allocation of fixed costs.
When to Use
| Scenario | Action |
|---|
| Measuring true ad profitability | CM4 ROAS is the ultimate efficiency metric |
| Investment decisions | CM4 ROAS > 1x means ads generate net profit |
| Budget planning | Use CM4 ROAS to determine sustainable spend levels |
| Performance benchmarking | Track CM4 ROAS trends over time |
| Metric | Relationship |
|---|
| CM3 ROAS | Contribution margin per ad dollar |
| CM4 | Total operating profit |
| ROAS | Revenue per ad dollar |
