Blended Cost per Initiate Checkout: Acquisition Efficiency

Blended Cost per Initiate Checkout measures how much you spend to generate one checkout start. Meta and TikTok are the platforms that report checkout starts, so only their spend counts.

Formula

Formula Components

Metric	Definition
Meta Spend	Spend from your Meta ad accounts
TikTok Spend	Spend from your TikTok ad accounts
Blended Initiate Checkouts	Checkout starts that Meta and TikTok attribute to your ads

Metadata
Type	Currency
Data Source	Meta Ads, TikTok Ads
Aggregation	Ratio

Example

Your campaigns ran on all three platforms last week:

Platform	Spend	Initiate Checkouts	Counted in this metric
Meta Ads	$1,500	500	Yes
TikTok Ads	$500	300	Yes
Google Ads	$400	Not reported	No
Blended Cost per Initiate Checkout	$2,000	800	$2.50

Dividing Blended Spend ($2,400) by the same 800 checkouts would give $3.00, adding Google’s budget to a count Google contributes nothing to.

How It Works

Upstack adds Meta and TikTok spend and divides by the checkout starts those two platforms report. Google Ads doesn’t report initiate checkouts, so its spend is left out. In the app the formula reads Meta + TikTok Spend ÷ Initiate Checkouts.

If you run Google Ads, this metric won’t equal Blended Spend ÷ Blended Initiate Checkouts.

Scenario	Action
Checking funnel drop-off	Compare with Blended CPA to see what a checkout start costs relative to a purchase
Setting budget targets	Use as a cost ceiling for checkout-focused campaigns
Evaluating funnel changes	Track changes after checkout improvements

Scenario

Action

Checking funnel drop-off

Compare with Blended CPA to see what a checkout start costs relative to a purchase

Setting budget targets

Use as a cost ceiling for checkout-focused campaigns

Evaluating funnel changes

Track changes after checkout improvements

Metric	Relationship
Meta Spend and TikTok Spend	Numerator
Blended Initiate Checkouts	Denominator
Blended CPA	Cost per purchase, on all spend

Metric

Relationship

Meta Spend and TikTok Spend

Numerator

Blended Initiate Checkouts

Denominator

Blended CPA

Cost per purchase, on all spend

METRICS

Blended Cost per Initiate Checkout

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