Cost per Add Payment Info: Measure Payment Step Efficiency

Cost per Add Payment Info measures the average advertising spend required to generate one payment info submission event tracked by the Upstack pixel.

Formula

Cost per Add Payment Info = Channel Spend ÷ Add Payment Info Events

Formula Components

Metric	Definition
Channel Spend	Total advertising spend across all connected ad platforms
Add Payment Info	Payment info submission events tracked by the Upstack pixel

Metadata
Type	Currency
Data Source	Upstack Pixel
Aggregation	Ratio

Week	Ad Spend	Add Payment Info	Cost/Add Payment Info
Week 1	$2,800	1,120	$2.50
Week 2	$3,200	1,280	$2.50
Week 3	$2,900	1,160	$2.50
Week 4	$3,100	1,240	$2.50
Total	$12,000	4,800	$2.50

Week

Ad Spend

Add Payment Info

Cost/Add Payment Info

Week 1

$2,800

1,120

$2.50

Week 2

$3,200

1,280

$2.50

Week 3

$2,900

1,160

$2.50

Week 4

$3,100

1,240

$2.50

Total

$12,000

4,800

$2.50

How It Works

Upstack calculates Cost per Add Payment Info by dividing your total advertising spend across all channels by the number of payment info submission events tracked by the pixel. This metric measures how efficiently your ads drive visitors to the payment stage of checkout—a high-intent action that indicates strong purchase likelihood.

When to Use

Scenario	Action
Funnel efficiency analysis	Compare against cost per purchase to measure payment-to-purchase drop-off cost
Budget optimization	Identify channels that drive payment info submissions most efficiently
Checkout optimization	Monitor how checkout UX changes affect acquisition costs at payment stage
Campaign targeting	Evaluate which audiences reach payment stage at lower cost

Metric	Relationship
Add Payment Info	Count of payment info events (denominator)
Add Payment Info Value	Monetary value of payment info events
Cost per Purchase	Next funnel stage cost efficiency

Metric

Relationship

Add Payment Info

Count of payment info events (denominator)

Add Payment Info Value

Monetary value of payment info events

Cost per Purchase

Next funnel stage cost efficiency

METRICS

Cost per Add Payment Info: Measure Payment Step 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