Ecommerce Customer Acquisition Cost Benchmarks (2026)

Short answer: The median ecommerce customer acquisition cost ranges from $22 to $84.22 depending on the industry, according to Polar Analytics' benchmarks for 4,000+ Shopify brands, last updated in August 2026. Most consumer categories sit between $34.03 (apparel and accessories) and $54.08 (home and garden), with health and wellness the outlier at $72.66.

The dollar figure matters less than what it is set against. By our calculation from the same table, acquisition swallows 20% of the average order in sports and outdoor and 110% in health and wellness. This report turns that into tiers you can check your store against, shows what is pushing ad costs up, uses six public retailers' filings as a reality check, and works through what a typical CAC does to first-order profit and payback.

Key figures at a glance

Median CAC by industry

Polar publishes a median CAC for each industry from the same pool of Shopify brands, refreshed weekly, with data going back to December 2022. It is the only recent, disclosed-sample CAC table by category from a source on our trusted list, so it anchors this report.

Three things drive the spread.

• Order value. High-ticket categories (business and industrial, automotive, home and garden) pay more per customer because each sale is worth more and buyers research longer. A $54 CAC on a $121 furniture order is a different business from a $54 CAC on a $66 serum.
• How crowded the auction is. Health and wellness brands compete for the same health-intent audiences on Meta and Google, and buyers often need more convincing before a first order.
• Purchase cycle. Consumables (food and beverage, pets, beauty, health) can afford to overpay on the first order because the customer is expected to come back within weeks. Durable categories have to make the first order pay.

The middle of the category medians in Polar's table is about $43, which is the number to quote if someone asks for "the average ecommerce CAC" with no category attached. It is our reading of the table, not a figure Polar publishes. Polar does note that brands in the $5M to $20M revenue tier have the worst CAC efficiency of any size band, without publishing the figure. For the formula and what belongs in the numerator, see how to calculate CAC.

CAC relative to order value: what good looks like

A $44 CAC is cheap for a store selling $140 orders and ruinous for one selling $40 orders. Dividing CAC by AOV makes categories comparable and tells you how much of the first sale acquisition consumes. Both numbers below come from the same Polar snapshot, so the ratio compares like with like.

To turn the ratio into a verdict you need the margin left on an order after product, shipping and payment costs. On an illustrative order with a 60% to 70% gross margin, $8 to $12 of shipping and about 3% in card fees, that leaves roughly 45% to 55% of AOV to pay for acquisition. Common Thread Collective's first-order profitability model lands in the same place: its worked example needs an acquisition MER (new-customer revenue divided by ad spend) of about 2.27 to break even on the first order. By our calculation that is a CAC of 44% of the first order's value.

Source: AOV and CAC medians from Polar Analytics' industry snapshot, last updated August 2026; the ratios and tiers are our calculation and judgement.

Read your own number against your category's band, not the cross-industry middle. A beauty brand at 55% of AOV is beating its category; an apparel brand at 55% is not. If your gross margin is well below 60%, move every boundary down by roughly the gap.

Polar's own new-customer ROAS column tells the same story from the other side. Polar's table puts it lowest in pets (1.47x), food and beverage (1.54x), health and wellness (1.63x) and beauty (2.21x). Those are the same four categories with the highest CAC-to-AOV ratios, and all four sit below the break-even level in the CTC example.

Why CAC keeps rising

The main input to paid CAC is the price of attention, and both large ad platforms report it in their filings. These are platform-wide prices across all advertisers, not ecommerce-only, but Shopify brands buy in the same auctions.

Meta's 2025 annual report shows the average price per ad up 9% in 2025, while ad impressions grew 12%. Its third-quarter 2026 filing shows prices up 14% in the quarter and 13% over the first nine months, against increases of 10% in both periods of 2025. Compounding 2024, 2025 and the first nine months of 2026 gives an ad that costs about 35% more than the same ad in 2023, by our calculation.

On Google, Alphabet's 2025 annual report shows Search cost-per-click up 7% from 2024 to 2025, with paid clicks up 6%. The 2024 report shows the same 7% rise from 2023 to 2024.

Ecommerce-specific data points the same way. Triple Whale's Google Ads benchmarks show cost per acquisition on Google Ads rising 12.35% in 2025, with the cost per thousand impressions up 10%. Peak weeks are worse: Triple Whale's 2025 Black Friday Cyber Monday breakdown found Google Ads CPA climbed 34.18% to $26.31 over the weekend, and Meta CPMs rose 7.6% to $22.26. Both Triple Whale figures count attributed purchases, including repeat buyers, so a true new-customer CPA would be higher.

Discounts are a second, quieter inflation. Klaviyo's Q1 2026 Commerce Trends Report, drawn from 10,000 brands and retailers, found the discount rate on new buyers rose from 9.8% to 10.8% while repeat-buyer discounts fell from 12.1% to 11.7%. A first-order discount rarely appears in a CAC calculation, but it is part of what the customer cost.

What public retailers spend per customer

Public retailers do not report CAC, but their annual reports disclose advertising spend and active customers (people who bought in the trailing 12 months). Dividing one by the other gives a floor on what each spends per customer it serves, and some filings let us get closer to the cost of a new customer.

Sources: Form 10-K filings for fiscal 2025 from Wayfair, Revolve, Warby Parker, Chewy, FIGS and Etsy. Per-customer figures are our calculation.

How the columns were calculated:

• Spend per active customer is the year's advertising or marketing expense divided by active customers at year end. Chewy's fiscal year ended 1 February 2026; the rest ended 31 December 2025.
• Revolve reports that existing customers (those who bought in a prior year) were 56% of 2025 actives, so 44% were new: about 1.25 million people. By our calculation $175.4M divided by 1.25 million is about $140, an upper bound because marketing also brings back existing customers.
• Etsy reports 21.2 million new marketplace buyers in 2025. By our calculation $790.9M divided by 21.2 million is about $37, also an upper bound: the spend covers retargeting of existing buyers and Etsy's other marketplaces.
• Per net added customer divides spend by the year's growth in actives. It overstates CAC heavily, because each company also had to replace customers who lapsed.

The limits are real. Spend per active customer understates CAC, because it spreads acquisition money across repeat buyers who cost little to keep. Spend lines differ: Chewy's includes marketing payroll, Revolve's and FIGS's include brand and influencer work, and Etsy counts only direct-marketing advertising. These are large, mature businesses with brand recognition a young Shopify store does not have.

Even so, the two companies that let us isolate new customers bracket Polar's medians. By our calculation Revolve's roughly $140 per new customer is 47% of its $299 average order, close to the 41% apparel ratio in Polar's data. Etsy's $37 per new buyer sits near Polar's apparel and gifts medians. Treat the public figures as a sanity check on your blended CAC, not a target.

Worked example: what CAC does to first-order profit and payback

Take a beauty brand at Polar's category medians: a $66 order and a $44.29 CAC. Assume, for the example, a 70% gross margin, $8 to pick, pack and ship, and card fees of 2.9% plus 30 cents.

Source: AOV and CAC medians from Polar Analytics; margins, shipping and fees are illustrative assumptions, and the arithmetic is our calculation.

In this example the beauty cohort of 1,000 new customers costs $44,290 to acquire and returns $35,990 of contribution on the first orders. It pays back once the group has placed 231 repeat orders at the same basket, whenever they arrive. If a quarter of those customers buy again within 90 days, payback is about a quarter away; if it takes a year to reach that point, the brand is financing $8,300 of acquisition for a year.

The health and wellness cohort in the example needs more than one repeat order per customer before it breaks even, which is why the category leans on subscriptions. The sports and outdoor cohort makes $25.26 per customer on day one, so its operators can treat retention as upside rather than survival.

Two levers close the beauty gap in this example. Cutting CAC by 10% saves $4.43 a customer, or $4,429 per 1,000. Getting 123 more repeat orders from the same 1,000 customers is worth the same contribution. The CAC cut is a one-off; the extra repeat orders tend to recur, because customers who come back once are more likely to come back again. To test your own numbers, use the CAC calculator, and see the profit margin benchmarks for realistic gross and contribution margins by category.

Payback and LTV to CAC: show the math, not a rule

Payback period is the number of months until the contribution from a cohort's orders equals what you spent to acquire it. LTV to CAC is the cohort's contribution over a set window (12 or 24 months) divided by its CAC. Both depend on your margin and your repeat rate, so a benchmark is only useful if it measures them the same way.

We found no trusted source with a disclosed sample that publishes ecommerce CAC payback periods or LTV to CAC ratios. The "3 to 1" rule appears in vendor and agency content without data behind it. Measure your own cohorts: acquisition spend for the month, new customers acquired, then contribution from those customers' orders at 30, 90, 180 and 365 days. The retention rate benchmarks give realistic repeat rates by category to plug in.

How to measure blended and paid CAC in Shopify

Polar does not publish its CAC definition, so before comparing yourself with its table, calculate two numbers.

Blended CAC is all acquisition spend divided by all new customers. Spend includes ad platforms, agency and freelancer fees, creative production, influencer and affiliate payouts, and the tools you use mainly to acquire. New customers are people whose first order fell in the period. In Shopify, go to Analytics, then Reports, and filter the Category to Customers; the Customers reports include new customers over time and new versus returning customer sales.

Paid CAC is paid media spend divided by the new customers those channels brought in. Ad platforms report purchases, not first purchases, so a Meta or Google "cost per purchase" mixes in returning customers and flatters the result. Use the platform's new-customer conversion setting where it exists, or an attribution tool that tags first orders, and compare its count with Shopify's new-customer total for the same dates.

Platform numbers also disagree with what spend actually causes. Common Thread Collective's Q1 2026 Channel Mix Benchmark of 299 DTC brands found Google brand search reporting 19.07x ROAS against an incrementality-adjusted 5.72x, while Meta acquisition campaigns reported 1.83x against an adjusted 2.07x. Brand search buys customers who were already coming, so its paid CAC looks far cheaper than it is.

A few rules keep the comparison honest:

• Use the same window for spend and customers, and at least a month, so one big campaign day does not distort it.
• Count first-order discounts and free-shipping offers aimed at new customers as acquisition cost, or report them beside CAC.
• Track blended CAC monthly and paid CAC by channel weekly. If paid CAC rises while blended holds, organic and referral are carrying more of the load.
• Keep conversion rate beside CAC; a falling conversion rate raises CAC even when ad prices are flat.

Retention as the lever, without the myths

The most quoted retention statistic comes from a 2014 Harvard Business Review article, which says acquiring a new customer is anywhere from five to 25 times more expensive than retaining one, "depending on which study you believe". It is more than a decade old, not specific to ecommerce, and the range is too wide to plan with. Use your own numbers instead: CAC against cost per retained customer.

Current filings make the case more concretely. Wayfair's 2025 annual report says 80.3% of orders came from repeat buyers. Revolve's report shows existing customers rising to 56% of active customers in 2025 from 50% in 2022, and notes they order more often and at higher order values than new ones. Etsy's report says reactivated buyers have approximately 40% higher first-year lifetime value than new buyers.

The pattern holds for smaller brands. Triple Whale's BFCM 2025 report found brands under $1M in revenue took about two-thirds of their BFCM revenue from first-time buyers, while brands above $10 million took the majority from repeat customers. Ahead of that season, Triple Whale's BFCM forecast expected the new-customer share of revenue to fall from about 57% to about 52% as acquisition got pricier.

The honest version of the argument is about arithmetic, not multipliers. In the beauty example, every repeat order recovers about $36 of acquisition spend without any new CAC, and a beauty store at Polar's medians needs one repeat order for every four or five new customers just to break even. The retention versus acquisition math walks through the full model, and The Ecommerce Retention Playbook covers how to measure repeat purchase rate and time to second order.

Where Mage fits

Mage is a Shopify loyalty and rewards app, so its job in this math is the repeat-order side. A points or store-credit reward that costs a few dollars on a second order is cheap against a $44 CAC, but only if it brings back customers who would not have returned anyway. Price each reward the way you price acquisition: track cost per retained customer next to CAC, and use the CAC calculator to see how many repeat orders your current CAC needs.

The The Ecommerce Retention Playbook covers the five retention metrics, repeat purchase rate on a 90-day window, and time to second purchase.