New Customer MER measures what percentage of your new customer order revenue is spent on advertising. This is a key metric for understanding customer acquisition efficiency.
NC MER = ( Total Ad Spend ÷ New Customer Order Revenue ) × 100
| Metric | Definition |
|---|
| Total Ad Spend | Combined advertising spend across all connected platforms |
| New Customer Revenue | Total revenue from first-time buyer orders |
| Metadata | |
|---|
| Type | Percentage |
| Data Source | Shopify, Meta Ads, Google Ads |
| Aggregation | Ratio |
Example
Your Shopify store generated $80,000 in new customer revenue while spending $40,000 on advertising.
| Metric | Value | Calculation |
|---|
| Total Ad Spend | $40,000 | All ad platforms |
| New Customer Revenue | $80,000 | First-time buyers |
| NC MER | 50% | ($40,000 ÷ $80,000) × 100 |
How It Works
NC MER isolates marketing efficiency for customer acquisition. Since new customers typically cost more to acquire than returning customers to retain, NC MER is usually higher than overall MER. Comparing NC MER to total MER reveals how much your returning customers improve blended efficiency.
When to Use
| Scenario | Action |
|---|
| Acquisition budget planning | Set target NC MER based on allowable CAC |
| Prospecting campaign evaluation | Compare NC MER across acquisition channels |
| LTV:CAC analysis | Ensure NC MER allows for profitable payback |
| Budget allocation decisions | Compare NC MER to RC MER for optimal split |
| Metric | Relationship |
|---|
| MER | Total MER including all customers |
| NC MER (Gross) | NC MER using gross revenue |
| NC MER (Net) | NC MER using net revenue |
| New Customer ROAS | Revenue-based efficiency (inverse metric) |
