Customer metrics and retention benchmarks explain whether e-commerce growth comes from new customer acquisition, repeat buyers,
subscriptions, or long-term customer value. This silo groups repeat purchase rate, customer lifetime value, customer acquisition cost,
CAC inflation, LTV:CAC ratio, churn rate, and subscription revenue benchmarks used in retention, profitability, customer economics,
and lifecycle reporting.
Back to the main hub:
E-commerce Statistics.
For definitions and comparison rules, start with
Methodology.
If you need the core customer benchmark set first, use
repeat purchase rate benchmarks,
LTV benchmarks,
CAC benchmarks,
and e-commerce CAC inflation benchmarks.
Core customer and retention benchmarks
Start with these datasets when you need to explain repeat buying, customer value, acquisition efficiency, and customer economics.
Repeat Purchase Rate Benchmarks
Benchmarks for how often customers buy again, with context for time windows, category mix, and retention strategy.
Customer Lifetime Value (LTV) Benchmarks
LTV benchmarks and definition guidance for revenue-based, gross-margin-based, and contribution-based customer value.
Customer Acquisition Cost (CAC) Benchmarks
CAC benchmarks for understanding acquisition efficiency, paid growth, and new customer economics.
E-commerce CAC Inflation Benchmarks
Benchmarks for rising customer acquisition costs and their impact on retention, LTV:CAC, payback, and growth efficiency.
Retention benchmarks are stronger when paired with funnel and marketing context. Use this silo together with
average order value benchmarks,
MER benchmarks,
and e-commerce ad cost benchmarks.
Customer economics and acquisition pressure benchmarks
Rising acquisition costs make retention, LTV, repeat purchase, and contribution margin more important for e-commerce profitability.
E-commerce CAC Inflation Benchmarks
Rising acquisition cost benchmarks for explaining why paid growth becomes harder when media costs, competition, and conversion friction increase.
LTV:CAC Ratio Benchmarks
Ratio benchmarks showing whether customer value is high enough to justify acquisition cost and growth investment.
E-commerce Profitability Benchmarks
Profitability benchmarks that connect acquisition cost, retention, gross margin, cash flow, and operating pressure.
CAC inflation does not only affect marketing teams. It changes the economics of the whole store: payback period, discounting tolerance,
retention priority, LTV:CAC ratio, and the amount of repeat revenue needed to stay profitable.
Customer metrics and retention dataset map
Use this table to choose the right metric for retention reporting, customer profitability analysis, subscription performance, or acquisition efficiency benchmarks.
| Dataset | What it measures | Best used for |
|---|---|---|
| Repeat Purchase Rate Benchmarks | The share of customers who place another order within a defined time window. | Retention analysis, lifecycle reporting, loyalty strategy, and category comparisons. |
| Customer Lifetime Value (LTV) Benchmarks | The expected or observed value generated by a customer over a defined lifetime or time horizon. | Customer profitability, retention strategy, acquisition planning, and growth economics. |
| Customer Acquisition Cost (CAC) Benchmarks | The average cost required to acquire a new customer. | Paid growth analysis, acquisition efficiency, budget planning, and marketing profitability reporting. |
| E-commerce CAC Inflation Benchmarks | How customer acquisition costs rise over time or across channels, markets, and competitive environments. | Acquisition pressure analysis, paid media planning, growth efficiency, LTV:CAC context, and profitability risk reporting. |
| LTV:CAC Ratio Benchmarks | The relationship between customer lifetime value and customer acquisition cost. | Profitability narratives, growth efficiency, investor-style reporting, and acquisition quality comparisons. |
| Churn Rate Benchmarks | The share of customers or subscribers who stop buying, cancel, or become inactive within a defined period. | Subscription analysis, retention risk, lifecycle health, and customer base quality reporting. |
| Subscription Share of Revenue | The share of revenue generated from recurring subscriptions or subscription-like commerce models. | Subscription commerce, recurring revenue analysis, retention models, and revenue quality reporting. |
What this silo covers
Customer and retention metrics connect acquisition, repeat purchase, revenue quality, margin pressure, and long-term profitability.
Repeat buying behavior
Repeat purchase rate shows whether customers come back after the first order and how retention differs by category, cohort, and time window.
Customer value
LTV benchmarks help explain how much value a customer creates across orders, repeat purchases, gross margin, and customer lifetime.
Acquisition efficiency
CAC and LTV:CAC benchmarks show whether acquisition spend is economically justified by future customer value.
CAC pressure
CAC inflation benchmarks explain how rising acquisition costs can weaken payback, reduce marketing efficiency, and increase dependence on retention.
Churn and recurring revenue
Churn rate and subscription share of revenue explain the stability, predictability, and risk profile of recurring customer relationships.
Unit economics
Retention metrics become more useful when connected with profitability, margin, fulfillment cost, cash flow pressure, and break-even time.
How to use customer and retention benchmarks
Use these checks before comparing repeat purchase, LTV, CAC, CAC inflation, churn, or subscription revenue benchmarks across sources.
-
Define the time window.
Repeat purchase rate, churn, LTV, CAC, and CAC inflation can change significantly depending on whether the source uses 30 days, 90 days, 12 months, cohort lifetime, or another period. -
Separate revenue LTV from margin LTV.
LTV can be calculated from gross revenue, gross margin, contribution margin, or modeled future value. Do not compare them as the same metric. -
Label CAC assumptions.
CAC can include paid media only, total marketing spend, sales costs, agency fees, discounts, or blended acquisition costs depending on the source. -
Watch CAC inflation separately from CAC level.
A CAC benchmark shows the current acquisition cost. CAC inflation shows whether that cost is rising and whether retention, LTV, or pricing must improve to protect profitability. -
Use LTV:CAC carefully.
LTV:CAC is useful for growth efficiency, but it is sensitive to lag, retention assumptions, margin assumptions, attribution model, and payback period. -
Connect retention to funnel quality.
High conversion rate or low CAC can still be weak if customers do not repeat, churn quickly, return products often, or have low average order value. -
Connect customer metrics to profitability.
Customer value is not only a marketing metric. It affects gross margin, break-even time, cash flow pressure, and the survival risk of an online store.
Reference pages:
Methodology •
Glossary •
Sources
Key definitions
Short definitions for the most important customer and retention terms used across this silo.
Repeat purchase rate is the share of customers who place another order within a defined time window.
Customer lifetime value (LTV) is the value a customer generates over a defined lifetime, cohort period, or modeled future period.
Customer acquisition cost (CAC) is the average cost required to acquire a new customer, depending on included spend categories.
CAC inflation describes the increase in customer acquisition cost over time, usually caused by higher media costs, more competition, weaker conversion efficiency, or broader market pressure.
LTV:CAC ratio compares customer lifetime value with the cost of acquiring that customer.
Churn rate is the share of customers or subscribers who stop buying, cancel, or become inactive within a defined period.
Subscription share of revenue is the percentage of revenue generated from recurring subscription or subscription-like purchase models.
FAQ
What is the difference between repeat purchase rate and churn rate?
Why does CAC inflation make retention more important?
stronger LTV:CAC ratio, faster payback, better margins, and lower churn.