# Calculating customer acquisition costcustomer acquisition costCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → across paid and owned channelsowned channelsMedia channels a company owns and controls directly, such as its website, blog, newsletter, social accounts and mobile app. No per-use payment to a publisher is required.View full definition →
A film studio spends $4 million on paid social ads to promote a theatrical release, and pulls in 800,000 ticket bookings through trackable links. Meanwhile, the same studio pushes a notification through its owned app to 12 million existing users, at essentially zero incremental media cost, and drives 300,000 of those same bookings. If you only look at the paid campaign, CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → (customer acquisition costcustomer acquisition costCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition →) looks expensive. If you blend the two channels together, CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → looks artificially cheap. Neither number alone tells you whether the campaign worked. This is the trap of blended CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition →, and it is one of the most misused metrics in media marketing.
CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → is the total cost to acquire one paying customer or one converted user, over a defined period and channel.
Basic formula:
CAC = Total acquisition spend / Number of new customers acquiredThe catch is entirely in the numerator and denominator definitions. "Total spend" can mean media cost only, or media plus creative production, plus platform fees, plus a share of the marketing team's salaries. "New customers" can mean app installs, trial sign-ups, paid subscriptions, or ticket purchases. Sector benchmarks are only comparable if you know which version is being quoted.
For streaming services, a commonly cited planning range in the US market is CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → of roughly $50 to $150 per new paid subscriber, depending on genre and platform (estimate, varies widely by service and year, see public commentary from Ampere Analysis and Parks Associates for methodology). For mobile games, blended CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → benchmarks often sit in the $2 to $30 range per install depending on genre, with hypercasual games at the low end and mid-core RPGs (role-playing games) at the high end (estimate, industry trade press).
Paid channel CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → is the cleanest to calculate because spend and attributionattributionA framework for assigning credit to the touchpoints that contributed to a conversion, so you can measure which channels and interactions actually drive results.View full definition → are explicit.
Worked example, paid social:
That $5 figure is real and auditable. The platform (Meta, TikTok, Google) reports spend, and the studio's own analytics attribute conversions. This is why paid CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → dominates marketing dashboards: it is legible.
Owned channelsOwned channelsMedia channels a company owns and controls directly, such as its website, blog, newsletter, social accounts and mobile app. No per-use payment to a publisher is required.View full definition →, an app's push notifications, email lists, a studio's own website, look nearly free because there is no media buy. But "nearly free" is not "free," and treating it as zero cost misleads the blended number.
Worked example, owned push notification:
This looks incredible next to the $5.00 paid CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition →. But it is not really comparable, because:
1. Those 12 million app users were themselves acquired at some historical cost (often originally via paid channelspaid channelsVisitors arriving via paid ads or sponsored placements, where you pay a platform to display your message rather than earning visits organically.View full definition →), which this calculation ignores.
2. Push notifications monetize an already-warm, already-converted audience. Comparing it to cold paid acquisitionpaid acquisitionVisitors arriving via paid ads or sponsored placements, where you pay a platform to display your message rather than earning visits organically.View full definition → is comparing apples to a fruit basket you already own.
Blended CAC combines both channels into one number:
Blended CAC = ($4,000,000 + $40,000) / (800,000 + 300,000)
= $4,040,000 / 1,100,000
= $3.67 per bookingThat $3.67 is technically accurate as an average, but it hides that paid acquisitionpaid acquisitionVisitors arriving via paid ads or sponsored placements, where you pay a platform to display your message rather than earning visits organically.View full definition → costs $5.00 and owned costs $0.13. A studio executive who sees only the blended number might conclude acquisition is cheap and cut paid budgets, not realizing owned channelsowned channelsMedia channels a company owns and controls directly, such as its website, blog, newsletter, social accounts and mobile app. No per-use payment to a publisher is required.View full definition → cannot scale (you cannot push-notify people who never installed the app). This is the core distortion: owned channels dilute blended CAC without being a substitute for paid channels at the top of the funnel.
The fix used by disciplined marketing teams: report paid CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → and owned CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → separately, and use blended CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → only to track overall efficiency trends over time, never to compare against sector benchmarks that are channel-specific.
CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → only means something next to LTV (lifetime value), the total revenue (or margin) a customer generates over their relationship with the product.
LTV:CAC ratio = LTV / CACA widely cited healthy benchmark across subscription media businesses is an LTVLTVLifetime Value: the total revenue (or profit) a customer generates throughout their entire relationship with your business.View full definition →:CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → ratio of 3:1 or higher (estimate, common SaaS and subscription industry heuristic, see OpenView's SaaS benchmarks). Below that, growth is likely unprofitable long-term. For streaming, if average subscriber LTVLTVLifetime Value: the total revenue (or profit) a customer generates throughout their entire relationship with your business. is around $120 (based on average revenue per user and churn-adjusted tenure) and blended is $80, that is a 1.5:1 ratio, a warning sign, even though the figure alone might look acceptable.
Knowledge check
1. A studio's paid social campaign alone shows a high CAC, but when combined with a near-zero-cost owned-channel push, the blended CAC looks very cheap. What is the main risk of relying on the blended number alone?
2. Why can two companies both report 'CAC' figures that are not actually comparable to each other?
3. A mobile game studio wants to evaluate whether its paid user-acquisition campaign is truly efficient, separate from the effect of organic word-of-mouth installs. What approach best fits this goal?
4. Select ALL correct answers about factors that can legitimately change what a reported CAC figure represents.
Select all the correct answers.
5. Select ALL correct answers about why owned-channel acquisition (e.g., a notification sent to an existing app user base) tends to show a much lower CAC than paid channels.
Select all the correct answers.
In Europe, CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → benchmarks for streaming and media apps often run lower than the US, largely due to lower CPMs (cost per thousand impressionscost per thousand impressionsCost Per Mille: the cost to deliver 1,000 ad impressions. A pricing and benchmarking metric for awareness campaigns where reach matters more than clicks.View full definition →, the standard unit for paid mediapaid mediaVisitors arriving via paid ads or sponsored placements, where you pay a platform to display your message rather than earning visits organically. pricing) on platforms like Meta and Google in markets such as Germany, France, and Poland. Estimates place European streaming in the $30 to $100 range versus the $50 to $150 US range cited earlier (estimate, industry commentary, varies by market and platform). However, GDPR (General Data Protection Regulation, the EU's data privacy law) constraints on tracking and consent requirements can reduce accuracy, meaning European figures often carry wider error bars than US figures, where tracking has historically been less restricted (though this gap is narrowing post-ATT, Apple's App Tracking Transparency framework).
This matters practically: if you are benchmarking a pan-European campaign against a US-only one, do not assume the raw CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → numbers are apples-to-apples. AttributionAttributionA framework for assigning credit to the touchpoints that contributed to a conversion, so you can measure which channels and interactions actually drive results.View full definition → methodology differences alone can swing reported CACCACCustomer Acquisition Cost (CAC) is the total sales and marketing spend divided by the number of new customers gained in a period. It measures how efficiently you grow.View full definition → by 20 to 30 percent.
| Channel type | Typical cost basis | AttributionAttributionA framework for assigning credit to the touchpoints that contributed to a conversion, so you can measure which channels and interactions actually drive results.View full definition → clarity | Scalability |
|---|---|---|---|
| Paid social/search | Media spend + creative | High (platform-reported) | High, but rising CPMs cap efficiency |
| Owned (app push, email, CRMCRMCustomer Relationship Management: software and strategy to manage and analyse customer interactions throughout their lifecycle.View full definition →) | Ops/tooling cost only | Very high (first-party datafirst-party dataData collected directly from your own customers and prospects through your own channels: your most reliable and privacy-compliant source.View full definition →) | Low, capped by existing audience size |
| Organic/earned (press, word of mouth) | Indirect (PR team cost) | Low, hard to isolate | Unpredictable |
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