Meta New Customer Cost per Purchase measures how much you spend on Meta ads for each first-time buyer conversion.
Meta NC Cost per Purchase = Meta Spend ÷ Meta New Customer Purchases
| Metric | Definition |
|---|
| Meta Spend | Total amount spent on Meta advertising |
| Meta New Customer Purchases | Number of purchases by first-time buyers attributed to Meta ads |
| Metadata | |
|---|
| Type | Currency |
| Data Source | Meta Ads |
| Aggregation | Ratio |
Example
Your store ran a prospecting campaign in March with $12,400 in Meta ad spend that generated 124 new customer purchases.
| Metric | Value | Calculation |
|---|
| Ad Spend | $12,400 | Total Meta spend |
| New Customer Purchases | 124 | First-time buyers |
| NC Cost/Purchase | $100.00 | $12,400 ÷ 124 |
How It Works
This metric isolates your acquisition efficiency by focusing exclusively on first-time buyers. Meta identifies new customers using the customer information signals you send via the Conversions API. Unlike overall CPA, this filters out repeat purchasers to show true acquisition costs.
When to Use
| Scenario | Action |
|---|
| Evaluating prospecting campaigns | Compare NC cost across ad sets targeting cold audiences |
| Setting acquisition budgets | Use as baseline to forecast spend needed for growth targets |
| Comparing to customer LTV | Ensure acquisition cost stays below customer lifetime value |
| Optimizing creative for new customers | Test which ads drive lowest NC acquisition costs |
| Metric | Relationship |
|---|
| Meta New Customer Purchases | The denominator in this calculation |
| Meta Spend | The numerator in this calculation |
| Meta New Customer CPA | Equivalent metric using standard CPA terminology |
