Unit Economics

Unit economics measure the profit or loss generated by a single customer or a single unit sold, and they answer the most fundamental question in any business: does each customer bring in more money than it costs to find them? The two numbers that matter are customer acquisition cost (CAC), which is what you spend to get a customer, and lifetime value (LTV), which is how much that customer spends over their entire relationship with the brand. E-commerce brands currently lose an average of $29 on every new customer acquired, up from $9 in 2013.

How It Works

Customer acquisition cost

CAC is total marketing and sales spend divided by the number of new customers acquired in that period. The average DTC retail CAC in 2025 is $226 for all channels combined, though category matters enormously: food and beverage brands pay roughly $53 per customer, beauty brands pay around $42, and electronics companies pay $377+. These costs increase 20 to 40% during a brand’s first three to six months when there is no data to optimize against, and another 30 to 50% during Q4 when every brand is bidding for the same audience.

Lifetime value

LTV is the total revenue a customer generates over their entire relationship with the brand, minus the cost of serving them. A beauty customer who buys a $30 lipstick three times a year for four years with a 70% gross margin has an LTV of roughly $252. The critical insight is that a $30 lipstick needs repeat purchases before the customer becomes profitable, because the $42 it cost to acquire that customer is not recovered on the first sale.

The ratio that determines everything

A healthy LTV:CAC ratio is 3:1 or higher, meaning you earn at least $3 for every $1 spent acquiring a customer. Subscription businesses target 5:1 or 6:1. Luxury goods achieve the highest ratios at 5.2:1 despite having the highest acquisition costs ($175+), because customers who spend $500 per purchase come back repeatedly. Below 1:1, the business loses money on every customer it acquires and will run out of cash eventually.

Real Example

Poppi reported a customer acquisition cost of $18, compared to the industry average of $29, which meant every new customer cost nearly 40% less to find than a typical consumer brand customer. Combined with 65% gross margins, the unit economics worked at scale and directly contributed to PepsiCo paying $1.95 billion for the brand. By contrast, many DTC brands that collapsed in 2022 and 2023 had CACs above $80 and LTV:CAC ratios below 2:1, meaning they were spending more to acquire customers than those customers would ever generate.

Go Deeper

• Margins and Profitability: How unit economics connect to the full margin stack and business profitability.
• DTC (Direct-to-Consumer): Why customer acquisition costs have risen 222% in eight years and what it means for DTC brands.
• Influencer Marketing: How influencer-generated content reduces acquisition costs by roughly 30% compared to brand-produced ads.

Frequently Asked Questions

What are unit economics?

Unit economics measure the direct revenue and costs associated with a single customer or unit. The core calculation compares customer acquisition cost (CAC) against lifetime value (LTV). If it costs $42 to acquire a beauty customer and that customer generates $252 in gross profit over four years, the LTV:CAC ratio is 6:1, which is healthy. If the ratio falls below 3:1, the business is spending too much to acquire customers relative to what they generate.

What is a good LTV:CAC ratio?

The standard target is 3:1 to 4:1, meaning you earn $3 to $4 for every $1 spent finding a customer. Subscription businesses should aim for 5:1 or 6:1 because recurring revenue compounds the lifetime value. Below 1:1, the business loses money on every customer. Above 5:1 may indicate the business is underinvesting in growth and leaving market share on the table.

Why do e-commerce brands lose money on each new customer?

The average e-commerce brand loses $29 per new customer acquired because the cost of finding that customer ($226 average across all channels, $42 for beauty) often exceeds the gross profit from the first purchase. A $30 product with a 70% margin generates $21 in gross profit, which means the brand is $21 in the hole after the first sale if it cost $42 to acquire that customer. Profitability depends on the second and third purchases.

How do you reduce customer acquisition cost?

The most effective strategies are influencer marketing (reduces CAC roughly 30% vs. brand-produced ads), organic content and SEO, email and SMS marketing to existing customers (repeat customers convert at 60 to 70% vs. 5 to 20% for new visitors), and retail distribution (where the retailer bears the cost of bringing customers through the door). Poppi achieved an $18 CAC partly through founder-led TikTok content that cost nothing to produce.

Sources

• SimplicityDX, “Brands Losing $29 per New Customer,” 2024. Per-customer loss data and historical trend.
• MobiLoud, “Average Customer Acquisition Cost for Ecommerce,” 2025. CAC benchmarks by category and channel.
• Qubit Capital, “LTV:CAC Benchmarks,” 2024. LTV:CAC ratio benchmarks by industry and business model.