New Customer Contribution Margin %: Acquisition Efficiency

Percentage of new customer net revenue remaining as contribution margin, filtered by customer_type = new_customer.

Formula

Formula Components

Metric	Definition
New Customer Contribution Margin	Total profit from new customers after COGS, fulfillment, transaction, and marketing costs
New Customer Net Revenue	Net revenue from new customers after discounts and refunds
customer_type = new_customer	Filters to orders from first-time buyers only

Metadata
Type	Percentage
Data Source	Shopify, Upstack Costs
Aggregation	Ratio

Customer Type	Net Revenue	Contribution Margin	Margin %
New Customers	$125,000	$45,200	36.2%
Returning Customers	$200,000	$142,000	71.0%
All Customers	$325,000	$187,200	57.6%

Customer Type

Net Revenue

Contribution Margin

Margin %

New Customers

$125,000

$45,200

36.2%

Returning Customers

$200,000

$142,000

71.0%

All Customers

$325,000

$187,200

57.6%

How It Works

This metric divides new customer contribution margin by new customer net revenue to show what portion of acquisition revenue converts to profit. Lower percentages indicate higher relative costs (COGS, fulfillment, marketing) against first-order revenue—common for brands investing heavily in customer acquisition.

When to Use

Scenario	Action
Evaluating acquisition efficiency	Compare margin % between new and returning customers
Setting CAC targets	Ensure acquisition costs don’t exceed acceptable margin thresholds
Channel optimization	Identify which channels acquire customers with better margins
Pricing analysis	Determine if new customer promotions erode profitability

Metric	Relationship
New Customer Contribution Margin	The numerator (dollar amount before percentage)
New Customer Net Revenue	The denominator (revenue base for the percentage)
Returning Customer Contribution Margin %	Same calculation for repeat buyers
Contribution Margin %	Blended margin across all customer types

Metric

Relationship

New Customer Contribution Margin

The numerator (dollar amount before percentage)

New Customer Net Revenue

The denominator (revenue base for the percentage)

Returning Customer Contribution Margin %

Same calculation for repeat buyers

Contribution Margin %

Blended margin across all customer types

METRICS

New Customer Contribution Margin %: Acquisition Efficiency

Formula

Formula Components

Example

How It Works

When to Use

​Formula

​Formula Components

​Example

​How It Works

​When to Use

​Related Metrics

Formula

Formula Components

Example

How It Works

When to Use

Related Metrics