Customer Acquisition Cost Calculator for Shopify Subscription Brands

Instantly calculate how much you're spending to acquire each new customer. Designed specifically for subscription-based Shopify stores, this free CAC calculator helps you improve ROAS, lower acquisition costs, and scale smarter.

Calculate My CAC Calculate My CAC

Calculate Your CAC by Entering Total Spend and New Customers Acquired

Total Marketing and Sales Spend ($)

How much you spent on marketing and sales.

Number of New Customers Acquired

How many new customers you got.

Your Customer Acquisition Cost Result

You’re currently spending $0 to acquire each new subscriber.

Reducing your CAC by just 10% can significantly boost your profit margins. Focus on organic traffic, referrals, and optimizing your free trial funnel.

Get Your Free Guide to Reducing CAC

Discover 10 smart strategies used by Shopify subscription brands to reduce acquisition costs, increase retention, and grow faster.

Get My Free Guide Get My Free Guide

First Name

Last Name

Email Id

Notify me about Driftcharge early access updates.

We’ll never share your info. View our Privacy Policy.

What Is Customer Acquisition Cost (CAC)?

Customer Acquisition Cost (CAC) is the total marketing and sales cost required to acquire a new customer. For Shopify brands with recurring revenue, keeping CAC lower than Customer Lifetime Value (LTV) is essential for long-term profitability.
Use this calculator to instantly understand your CAC and start optimizing it today.

How To Calculate?

Total Marketing & Sales Spend

Number of New Customers

Customer Acquisition Cost

Example : Calculating CAC for a Skincare Subscription Brand

Over the past 60 days, Leo invested $4,500 into customer acquisition:
- $2,000 on Meta ads
- $1,500 on TikTok creator partnerships
- $1,000 on email marketing tools and campaign design
During this period, he gained 180 new subscribers.
To calculate CAC, Leo divides the total spend by the number of customers acquired:
$4,500 ÷ 180 = $25

That means Leo spends $25 to acquire each new subscriber.
With an average LTV of $300 (from a 10-month retention at $30/month), Leo has a strong LTV:CAC ratio of 12:1 — giving him room to scale profitably with Driftcharge

Why Reducing CAC Matters

Lower CAC = Higher Margins:

Spend less to earn more.

Better Return on Ad Spend (ROAS):

Maximize every dollar you spend.

Faster CAC Payback Period:

Reinvest sooner and grow faster.

Scale Efficiently:

Reduce spend and increase volume without sacrificing ROI.

Focus on growing smarter and watch your subscription business thrive.

Explore more calculators Explore more calculators

Frequently asked questions

What is Customer Acquisition Cost (CAC) and why is it important for my Shopify store?

CAC shows how much you spend to gain a customer. It's essential for calculating profitability.

How does the Shopify CAC Calculator work?

Enter your total marketing spend and number of new customers. We calculate your CAC instantly.

What data do I need to calculate CAC for my Shopify store?

Your total spend and the number of customers acquired over a specific period.

What is a good customer acquisition cost (CAC) for a Shopify subscription business?

A good rule of thumb is an LTV:CAC ratio of 3:1 or better.

How can I reduce my Shopify store’s CAC?

Improve onboarding, optimize your free trial flow, test lower-cost acquisition channels, and increase LTV with upsells and retention tactics.