Blended New Customer CPA: Cost to Acquire New Customers

Blended New Customer CPA measures how much you spend on average to acquire each new customer through your ads. Meta is the only platform that reports new customer purchases, so only Meta spend counts.

Formula

Formula Components

Metric	Definition
Meta Spend	Spend from your Meta ad accounts. Google Ads and TikTok spend are left out
Blended New Customer Purchases	First-time customer purchases that Meta attributes to your ads

Metadata
Type	Currency
Data Source	Meta Ads
Aggregation	Ratio

Example

Your store ran ads on all three platforms last month:

Platform	Spend	New Customer Purchases	Counted in this metric
Meta	$6,000	80	Yes
Google	$4,000	Not reported	No
TikTok	$2,000	Not reported	No
Blended New Customer CPA	$6,000	80	$75.00

Dividing Blended Spend ($12,000) by Meta’s 80 new customers would give $150.00, double what Meta actually spent per new customer.

How It Works

Upstack divides Meta spend by the new customer purchases Meta reports. Google Ads and TikTok don’t report a new customer purchase count, so their spend is left out. In the app the formula reads Meta Spend ÷ New Customer Purchases.

For a cost per new customer that uses all ad spend and your store’s own orders, use the New Customer CPA order measure, which divides total ad spend by new customer orders.

Scenario	Action
Evaluating acquisition efficiency	Compare NC CPA to customer lifetime value
Scaling acquisition campaigns	Monitor NC CPA as Meta spend increases
Comparing to overall CPA	A much higher NC CPA than CPA means most purchases come from returning customers

Scenario

Action

Evaluating acquisition efficiency

Compare NC CPA to customer lifetime value

Scaling acquisition campaigns

Monitor NC CPA as Meta spend increases

Comparing to overall CPA

A much higher NC CPA than CPA means most purchases come from returning customers

Metric	Relationship
Meta Spend	Numerator
Blended New Customer Purchases	Denominator
Blended New Customer ROAS	New customer revenue per dollar of Meta spend
Blended CPA	Cost per purchase, including repeat customers, on all spend

Metric

Relationship

Meta Spend

Numerator

Blended New Customer Purchases

Denominator

Blended New Customer ROAS

New customer revenue per dollar of Meta spend

Blended CPA

Cost per purchase, including repeat customers, on all spend

METRICS

Blended New Customer CPA

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