Ecommerce Customer Acquisition: Channels & Formula (2026)

Growth in ecommerce rarely comes from doing more of everything. It comes from knowing where to focus—which channels bring in new customers, what they cost, and how to improve results over time.

That focus matters as online retail gets more competitive. Total US ecommerce sales reached $1.23 trillion in 2025, up 5.4% year over year, and ecommerce accounted for 16.4% of total retail sales in 2025.
As more brands compete for attention, brands are finding innovative ways to acquire customers without overspending. 

“You don’t need to find that perfect person every day,” says Neil Hoyne, chief strategist for data and measurement at Google, in a Shopify Masters interview. “You just need to be mindful as to what’s leading to slightly better people, and put a little bit more emphasis there.”

This guide shares how to calculate ecommerce customer acquisition costs (including benchmarks to compare yours against), with strategies and channels to consider in your acquisition strategy.

What is ecommerce customer acquisition?

Customer acquisition is the process of identifying, attracting, and converting first-time customers. It goes beyond running ads to address how ecommerce brands turn new demand into first purchases that become repeat revenue.

Acquisition can’t be treated as a single-channel problem. Today’s journey is fragmented and non-linear; Google’s 2025 data shows eight in 10 online purchase journeys involve multiple touchpoints. Shoppers move across search, social, video, marketplaces, email, and mobile before purchasing. 

Ecommerce acquisition spans:

• Paid channels: Shop Campaigns, Google Shopping, search ads, and paid social.
• Organic channels: SEO and content marketing, social media, and PR/earned media.
• Owned channels: Email marketing, SMS, push notifications, and loyalty or referral programs.
• Partner channels: Affiliate marketing, co-marketing partnerships, retail media networks, and wholesale or marketplace distribution.

Why ecommerce customer acquisition matters 

Acquisition matters because without new buyers, growth either stalls or becomes dependent on the customers you already have.

• Acquisition fuels future LTV. There’s roughly a 27% chance a customer will return after their first purchase—but once they make a second, the probability of a third rises to more than 54%, according to MobiLoud’s 2026 data ecommerce benchmarks.
• Protect against revenue stagnation. Despite those chances of a customer returning, around 73% won’t buy again after their first purchase. Without consistent new customer inflow, revenue can decline, because the pool of active buyers shrinks each month.
• Diversify acquisition channels. Brands running acquisition across multiple channels—paid, organic, referral, owned—are less exposed when any single one gets more expensive. Paid ad CPMs rose 8.64% year over year in 2025, per Triple Whale’s benchmark data. Brands without a diversified acquisition mix absorbed that increase in full.
• Profitability matters more than raw scale. More traffic is not the same as better acquisition. A campaign that drives 50,000 sessions at a 0.5% conversion rate with a $180 CAC may be less valuable than one that drives 8,000 sessions at a 3% conversion rate with a $40 CAC and a stronger LTV.

The challenge: “It can be very difficult to figure out which channel a sale came through,” says Guillaume Drew, founder of Or & Zon. “It’s easier when it’s an online sale. But for an offline sale, it can be very tricky. This is why you need a proper attribution model.”

Platform-level visibility into behavior, orders, and repeat purchase trends show whether acquisition is working. That’s made possible with Shopify’s unified data model, which creates a single customer view across every channel. Track them from acquisition to loyal customer within Shopify Analytics.

How to measure ecommerce customer acquisition

Here’s how to measure ecommerce customer acquisition and benchmark your findings against comparable brands:

Customer acquisition cost (CAC)

The formula to calculate ecommerce customer acquisition is: 

CAC = Total sales and marketing spend / Number of new customers acquired

For example, a brand spends $18,000 in a given month: $10,000 on paid social, $3,000 on Google Shopping, $2,000 on influencer fees, $1,500 on creative production, $1,000 on a marketing agency retainer, and $500 on email and analytics software. That month, they acquired 360 new customers.

Using the CAC formula:

$18,000 / 360 = $50 CAC 

Don’t undercount spend—a $50 CAC built on ad spend alone may be a $90 CAC once the full picture is included. 

Costs that belong in an ecommerce CAC calculation:

Costs that generally don’t belong in CAC include retention-focused spend (loyalty programs, winback campaigns, post-purchase email flows) and fulfillment or customer service costs.

A single blended CAC number is useful for overall profitability tracking, but it hides which channels are working. A campaign with a $30 CAC from organic search and a $140 CAC from paid social looks fine at the blended average of $85. 

On Shopify, store owners can pair store and order data with marketing tools to get a cleaner view of what acquisition is costing. Segment CAC to show your most (and least) profitable customer acquisition strategies across every channel.

Metrics that matter beyond CAC

Customer acquisition cost shows how much you spent to acquire a customer. It doesn’t tell you whether that customer was worth paying to acquire. 

Combine CAC with these key metrics to see the bigger picture:

Shopify Analytics has more than 60 prebuilt reports to surface these insights, including first-time versus returning customer sales, customer cohort analysis, and repeat purchase behavior by acquisition period. 

Native customer segmentation lets you act on that data directly—whether that’s isolating high-LTV cohorts or identifying one-purchase customers at churn risk. 

Best ecommerce customer acquisition channels

There is no universally best customer acquisition channel; it depends on your target audience, margin structure, and stage of growth. Understand where your target customers already spend attention, then evaluate whether those channels can deliver buyers at a CAC you can absorb. 

Ecommerce customer acquisition channel options include:

Paid channels

Paid channels can be a fast route to customer acquisition. Platforms like Google and Meta let new campaigns go live as soon as they’re approved.

Determine which paid channels perform best for your specific category, AOV, and purchase cycle:

• Paid search. Someone searching for your products has already declared intent. They’re looking for a specific product. Bid to position yours in the sponsored listing results with paid search ads. Google Shopping surfaces product images, prices, and business names directly in search results.
• Paid social. Meta, TikTok, and Pinterest operate on interruption. While users aren’t actively searching for your product when they view your ads, you can make campaigns relevant with personalized audience lists powered by Shopify Audiences. These campaigns drive up to two times more retargeting conversions than the next-best available tactic. 
• Retail media. Retailer-owned ad networks like Amazon Ads and Walmart Connect place brands inside a shopping environment. The tradeoff is margin compression and limited data portability. Conversion signals stay inside the retailer’s ecosystem.
• Shopping placements. Shop Campaigns lets you reach high-intent or similar buyers through the Shop app. Campaigns have controlled CAC or ROAS targets, and you only pay when customers convert. “This is the best thing going in commerce acquisition,” says David Segal, cofounder of Firebelly Tea. “There’s no comparison. We’ve basically stopped using all other acquisition channels since joining Shop Campaigns because it’s so effective.”

Luxury scent brand Pura faced rising ad costs and eroding signal quality that made it harder to reach the right buyers without overspending. 

“As a brand operating in both D2C and retail channels, it’s critical that we maximize the impact of every advertising dollar,” says Danielle Mathews, Pura’s senior director of integrated marketing. “We needed a precise strategy to reach high-intent customers—and to capture and retain their attention amid a sea of competing messages.”

Pura turned to Shopify Audiences to build:

• Lookalike audiences with similar characteristics to existing high-value customers
• Prospecting audiences to identify customers likely to be interested in their products
• Retargeting Boost to reconnect with website visitors who hadn’t yet made a purchase
• Existing Customers Plus to exclude loyal customers from paid campaigns 

Building on that foundation, Pura added Shop Campaigns to reach buyers already in a purchase mindset through the Shop app. The pay-per-conversion model meant Pura paid only when a customer bought.

Combined, the two channels helped Pura double new customer growth, increase sales by 100%, and reduce customer acquisition costs by up to 20%. 

“Shop Campaigns gives us tight control over our budget, allowing us to effectively manage both customer acquisition costs and ROAS for this acquisition channel,” says Danielle. “Having it all within the Shopify platform makes the entire process streamlined and easy to navigate.”

Organic channels

Organic channels can accumulate authority over time without ongoing ad spend. Channels to consider when building out this type of long-term acquisition infrastructure include:

• SEO and search content. Search engines like Google remain the number one source of brand discovery, but it can take up to six months to see results, according to Shopify’s SEO senior specialist Arthur Camberlein. Use them for high-intent category and product education queries.
• Editorial and problem-aware content. Target shoppers who recognize a problem but haven’t yet identified a solution. Skin care brand Blume, for example, runs the Blume University to answer questions like “How long does it take to see results?” and “Why do old acne marks fade slower than new ones?”
• Organic social. Social media will account for 15.2% of all online sales in 2026, according to Statista. TikTok Shop, in particular, claimed 20% of all social commerce in 2025, but channel selection depends on where your audience is. For brands targeting Gen Z, Instagram and TikTok dominate. 
• AI search. Year-over-year traffic to Shopify sites from AI search increased eight times, while orders were up 15 times over the same period. The Universal Commerce Protocol (UPC), co-developed between Shopify and Google, helps brands control how they show up in AI-generated answers.

Owned channels

Owned channels are marketing channels you control directly. The audience relationship exists independently of a third-party platform’s algorithm, ad auction, or distribution decision. For example, a subscriber on an email list or an SMS opt-in can be reached whenever you choose, at a cost that doesn’t increase with competition for attention.

This direct line of communication opens the door to retention and win-back campaigns. The faster a first-time customer places their second order, the sooner acquisition costs are recovered. 

Channels to consider here include:

• Zero- and first-party data capture. Use email pop-ups and email capture at checkout to gather emails. Supplement this with first-party data that sheds light on what shoppers are looking for.
• Welcome flows. Thetop 10% of welcome series have an average order rate of 9.89%, per Klaviyo’s data. Use yours to introduce the brand, surface the most relevant products, and deliver a clear reason to purchase. 
• Browsing and cart abandonment recovery. Abandoned cart email flows have an average revenue per recipient of $13.70, according to Klaviyo’s 2026 benchmarks, while browse abandonment campaigns bring in $4.32, on average. 
• Post-purchase education. Teach customers how to use the product, what to pair with it, what to expect, and when, before they have to reach out and ask. 
• Segmentation and lifecycle messaging. Email customers when they meet a trigger, like placing their first order or unlocking a new loyalty tier.These types of automated messages consistently deliver six to eight times more revenue per send than campaigns, per Klaviyo.

Shopify gives you a source of truth for what customers viewed, bought, and did next. Purchase data syncs directly to connected email tools like Shopify Messaging or Klaviyo, so post-purchase sequences can be triggered and personalized by what was bought.

“If a customer’s ordering a pie for Thanksgiving, we want to make sure that Shopify is tagging that customer as such,” says Adam Davis, senior marketing manager at Magnolia Bakery, in a Shopify Masters interview. “So that next Thanksgiving, we could just import that list into our email database and just send an email about pies to people we know who have purchased pies in the past.”

Partner and creator channels

Salsify’s 2026 Consumer Research report found 23% of customers have made a purchase because a social media influencer recommended it. And people who already trust a creator will extend that trust to brands the creator endorses, even brands they previously were skeptical of, per Edelman’s 2026 Trust Barometer.

This type of user-generated content (UGC) is both an acquisition channel and creative fuel for paid campaigns. Kara Brothers, president of Starface, explains the brand’s creator partnerships strategy in a Shopify Masters interview.

“We find different corners of the internet, different people who have big followings or small followings in their own individual talented areas, and we reach out to them and see if they want a product,” says Kara. 

“From there, we leave it completely up to them on what they do with the product. A lot of them, of course, wear it incorporated into their lives and post pictures,” says Kara. “For us, that’s free marketing—UGC, if you will.”

Plus, with partner and affiliate programs, cost is tied to outcomes rather than attention. An affiliate earns commission only when a sale is made, unlike paid social or search where spend is consumed regardless of whether the audience converts.

Shopify Collabs provides the operational infrastructure for this kind of program. It handles creator discovery, gifting workflows, affiliate link management, and performance tracking connected directly to Shopify’s order data.

Duradry used Shopify Collabs to find creators who already used the product and had direct experience with the problem it solves. In seven months, it built a network of over 250 creators, generated more than $50,000 in affiliate sales, and reduced CAC by 29%. 

How to build an ecommerce customer acquisition strategy

Here’s how to analyze customer data and build a customer acquisition strategy that reaches your target audience:

1. Start with customer and channel fit

Analyze customer data before selecting a channel or setting a marketing budget. First map what the customer journey looks like:

• What do they rely on to make purchasing decisions: reviews, editorial content, peer recommendations, or platform discovery? 
• Was it researched over days or weeks, or decided in a scroll? 
• Who do they listen to: category influencers, niche communities, search results, or brand-owned content?

Look at customers with the highest LTV, the shortest payback period, and the highest repeat purchase rate. Those are the buyers worth replicating—not just those who converted at the lowest cost.

Do the same for repeat customers. A customer who churns after one order changes the CAC math entirely. If the buyer most likely to convert cheaply is also the buyer least likely to return, optimizing for acquisition cost alone means you grow in orders but not necessarily in revenue.

2. Build around first-party data

Google reversed its plan to deprecate third-party cookies in Chrome in July 2024, but the broader direction toward user control over tracking is not reversing.

Roughly six in 10 Americans say limiting access to their personal data is important. Yet Attentive’s 2026 data shows 64% of shoppers want marketing to be more personalized, and a tailored experience influences 93% to stay loyal to a brand. 

The key is transparency: Qualtrics’ 2026 Consumer Experience Trends Report found 86% of consumers are willing to share more personal data if brands are transparent in how they use it. 

First-party data is information collected directly from your customers, with consent, through interactions with your own brand. That includes:

• Items they’ve bought and returned 
• Products or collections they’ve viewed
• Quiz or survey responses
• Customer loyalty program behavior
• Customer service interactions 

Shopify creates a unified customer profile to compile this first-party data across every channel. Data from native Shopify tools (like Shopify POS) and integrated apps (like loyalty, rewards, or email marketing tools) feed back to give a 360-customer view. 

These unified profiles power:

• Segmentation. Define customers by purchase history, order count, spend, location, email subscription status, and predicted spend tier to build audience lists without exporting data to a separate tool.
• Retargeting. Those segments feed directly into Shopify Audiences, which exports matched audience lists to Meta, Google, Pinterest, Snapchat, TikTok, and Criteo.
• Personalization. Profile data flows into connected apps like Klaviyo or Yotpo to trigger tailored offers and product recommendations that reflect what each customer has already done, not just who they demographically are.

“Don’t just collect information for the sake of collecting information—use it to personalize your emails, the customer’s experience, or deliver more value [with your products or services],” says Neil Hoyne.

3. Test channel mix, offers, and creatives

No acquisition channel, offer, or message should be assumed to work for your specific audience. Testing helps you identify what your customers respond best to.

Refreshing your approach can also limit ad fatigue. Epsilon’s 2025 data shows 88% of customers notice repetitive ads. The same figure says it makes them pay less attention to the ad, while 76% say it makes them like the brand less. 

“The strategy with ads and marketing: we try to be as proactive as possible,” says Selom Agbitor, cofounder of Mad Rabbit, in a Shopify Masters interview. 

“If you’re reactive, you’re just waiting for someone else to do something for you to copy. So we tried our best to make sure that whatever we are putting out there is a new concept and we also made sure that we were testing a lot of different things to try to find what was working. 

“The key to being successful was testing and making sure whatever you’re putting out, your audience can resonate and engage with it to end up purchasing from you.”

On Shopify, you can deploy storefront changes—landing page variants, checkout flow adjustments, app integrations for quiz capture or loyalty opt-in—without rebuilding the underlying technology stack. 

When customers near the end of their purchasing decision, Shop Pay’s accelerated checkout securely stores a customer’s billing details for one-click checkout. It’s been proven to lift conversion by up to 50% compared to guest checkout, and outpaces other accelerated checkouts by at least 10%.

4. Tie acquisition to customer retention

Two customers with identical first-order AOVs can have entirely different economic profiles, depending on whether one returns and the other doesn’t. 

“You need to be mindful about what’s leading you to slightly better people [customers who stick with you longer and spend more money], and put a little bit more emphasis there and a little less emphasis on those people we know aren’t going to come back,” says Neil Hoyne.

Strong retention lowers future acquisition pressure. Health and wellness brand HydroMATE, for example, found that nearly 10% of new customers acquired through Shop Campaigns repurchased within 14 days, compared to less than 5% of those acquired via other channels. The brand now attributes 43% of its daily customer growth to Shop Campaigns.

The same rang true for skin care brand Makari, whose Shop Campaigns accounted for 22% of new customer growth and contributed to a fourfold increase in return customers.

Channel aside, the post-purchase experience directly affects whether a new customer converts to a second order. Humii’s 2026 report found 76% of shoppers walked away after just one bad experience. It found the biggest factors were:

• Delivery failures 
• Poor communication around order status
• Issue resolution 

“As iOS 14 rolled out and paid acquisition became a highly competitive space, investors are looking at CAC to LTV ratios, and businesses are learning that retention is not just about squeezing more money from current companies, but rather a somewhat direct route to creating brand evangelists and superfans,” says Eli Weiss, senior director of CX and retention at Jones Road Beauty.