Retention Metrics: Which to Track by Business Model (Formulas + Benchmarks)

Most teams track the wrong retention metric for their business, then wonder why the number never tells them anything useful. An e-commerce brand obsesses over a churn rate that barely applies to non-contractual buyers. A SaaS company reports a flat customer retention rate while its revenue quietly erodes underneath. The problem is rarely the data. It is that there are at least six distinct retention metrics, they answer different questions, and only two or three of them actually fit any given business model.

This guide defines the six retention metrics that matter, gives the formula for each in plain terms, and then does the part most articles skip: it tells you which ones to actually track based on whether you run an e-commerce store, a subscription or SaaS product, or a B2B business. The goal is not to measure everything. It is to measure the two or three numbers that will actually change a decision, and to stop reporting the ones that only look like progress.

The 6 Retention Metrics, Defined

Each metric below answers a different question. Read them as a set, because the point of the next section is choosing among them, not using all of them.

1. Customer Retention Rate (CRR)

Customer retention rate is the percentage of customers a business keeps over a given period. It is the headline retention number and the one most people mean when they say “retention.” You calculate it by taking the customers at the end of a period, subtracting any new customers acquired during that period, dividing by the customers you had at the start, and multiplying by 100.

2. Churn Rate

Churn rate is the percentage of customers who leave over a given period, the mirror image of retention rate. If your retention rate is 80 percent, your churn is 20 percent. It is calculated by dividing the customers lost during a period by the customers you had at the start, times 100. Churn is the more natural framing for subscription businesses, where the question is who cancelled, while retention rate reads more naturally for businesses counting who stayed.

3. Customer Lifetime Value (CLV)

Customer lifetime value is the total revenue a business can expect from a single customer across the whole relationship. It converts retention from a percentage into money, which is why it is the metric that connects retention to profit. A common working formula multiplies the average purchase value by the purchase frequency by the average customer lifespan.

4. Repeat Purchase Rate (RPR)

Repeat purchase rate is the percentage of customers who buy more than once. It is the most useful retention metric for non-contractual businesses, because e-commerce has no “subscription” to cancel, so retention shows up as whether someone comes back to buy again. You calculate it by dividing the number of customers with more than one purchase by the total number of customers, times 100.

5. Net Revenue Retention (NRR)

Net revenue retention is the percentage of recurring revenue retained from existing customers over a period, including expansion and after subtracting downgrades and churn. Because it adds expansion revenue back in, NRR can exceed 100 percent, which is the signal that your existing customer base is growing on its own without any new customers. It is the metric subscription and SaaS operators increasingly treat as their north star.

6. Gross Revenue Retention (GRR)

Gross revenue retention is the percentage of recurring revenue retained from existing customers, excluding any expansion revenue. Because it leaves expansion out, GRR is capped at 100 percent and shows the pure defensive picture: how much revenue you held onto before any upsells flattered the number. Reading NRR and GRR together tells you whether growth is coming from keeping customers or from expanding the ones you keep.

Which Retention Metrics Should You Actually Track?

This is the decision the six definitions exist to serve. The right metrics depend almost entirely on your business model, because the same number that signals health in one model is close to meaningless in another. Here is the practical mapping.

For e-commerce and DTC, repeat purchase rate is the truest retention signal, supported by customer retention rate over a fixed window and CLV to translate it into money. Churn rate and the revenue-retention metrics borrowed from SaaS mostly add noise here, because a non-contractual buyer never formally churns; they just stop coming back.

For subscription and SaaS, net revenue retention is the north star, read alongside gross revenue retention to separate real retention from expansion, with churn as the operational early warning and CLV to size the value of a save. Customer retention rate on its own undercounts the story, because it treats a downgrading customer and an expanding one as identical.

For B2B, where a handful of accounts carry most of the revenue, net revenue retention and logo (customer) retention together matter more than any single-customer-count metric, with CLV anchoring how much to invest in keeping each account. The through-line across all three models is that retention measurement is the foundation the whole retention marketing strategy is built on, because you cannot improve what you are measuring with the wrong instrument.

What Counts as a Good Retention Rate?

Once you are tracking the right metric, the natural next question is what a healthy number looks like. The honest answer is that it depends entirely on your industry and model, because retention benchmarks span an enormous range. A rate that signals a thriving business in one sector would signal a crisis in another. Treat the reference points below as directional, and treat your own trend over consistent time periods as the benchmark that actually matters.

Reference ranges compiled from 2026 industry benchmark reporting; figures vary by source and methodology, so use them to locate your rough neighborhood, not as a precise target.

Two cautions on benchmarks. First, a blended cross-industry average (often cited around 75 percent) is close to useless on its own, because it averages a 90-percent SaaS business with a 30-percent e-commerce one. Always compare within your model. Second, for subscription businesses the more telling benchmark is net revenue retention, where roughly 100 percent is the median, above 100 means the base grows on its own, and 120 percent or higher is best-in-class.

Frequently Asked Questions About Retention Metrics

What is the most important retention metric?

There is no single most important retention metric; it depends on your business model. For e-commerce, repeat purchase rate and customer lifetime value matter most. For subscription and SaaS, net revenue retention is the north star. For B2B, net revenue retention and logo retention lead. The mistake is picking a metric because a competitor uses it rather than because it fits how your business actually makes money.

How do you calculate customer retention rate?

Customer retention rate is calculated as ((E minus N) divided by S) times 100, where E is the number of customers at the end of the period, N is the number of new customers acquired during the period, and S is the number of customers at the start. Subtracting new customers is the step people forget, and skipping it inflates the number by crediting retention for acquisition.

What is the difference between NRR and GRR?

Net revenue retention includes expansion revenue from existing customers, so it can exceed 100 percent. Gross revenue retention excludes expansion, so it is capped at 100 percent and shows the pure defensive picture of how much revenue you kept before upsells. Reading them together reveals whether your growth comes from retaining customers or from expanding the ones you keep. A wide gap, with high NRR and lower GRR, means expansion is masking real churn.

What is a good customer retention rate?

A good retention rate depends heavily on industry and model. Enterprise B2B SaaS commonly runs 90 to 95 percent or higher, while non-contractual e-commerce often sits around 28 to 40 percent, and both can be healthy for their category. Compare against your own model rather than a blended cross-industry average, and treat your own trend over consistent periods as the real benchmark. For subscription businesses, net revenue retention above 100 percent is the clearer signal of health.

What is the difference between churn and retention?

Churn and retention are two sides of the same measurement. Retention rate counts the customers you kept; churn rate counts the ones you lost. If retention is 80 percent, churn is 20 percent. Subscription businesses tend to frame the number as churn because the question is who cancelled, while businesses counting who stayed frame it as retention. They describe the same reality from opposite directions.

Which retention metric should an e-commerce store track?

An e-commerce or DTC store should track repeat purchase rate first, supported by customer retention rate over a fixed window and customer lifetime value to translate retention into revenue. The revenue-retention metrics from SaaS, net and gross revenue retention, add little value for e-commerce because there is no recurring subscription to retain. Repeat purchasing is how retention actually shows up when customers can leave simply by not returning.

Measure the Two or Three That Change a Decision

Retention metrics only earn their place when they change what you do next. The six defined here answer different questions, and the discipline is not tracking all of them but choosing the two or three that fit your model: repeat purchase rate, retention rate, and CLV for e-commerce; net and gross revenue retention, churn, and CLV for subscription and SaaS; net revenue retention, logo retention, and CLV for B2B. Everything else is a number that looks like insight without producing any.

Two steps for this week: confirm you are tracking the right metric for your model rather than the one you inherited or copied, and start measuring it on consistent cohorts so your own trend, not a borrowed benchmark, becomes the line you manage against. Once the measurement is honest, the retention work that moves it has something real to aim at.

How Does Digipeak Turn Retention Metrics Into Growth?

At Digipeak, retention measurement is the first step of any lifecycle engagement, because the wrong metric quietly misdirects the whole program. Every engagement starts by identifying the two or three metrics that fit the client’s model, setting up consistent cohort-based measurement, and reading the revealing gaps (net versus gross revenue retention for subscription businesses, repeat purchase behavior for e-commerce) before any campaign is built. That measurement foundation is what connects to the broader retention marketing strategy and the email and lifecycle programs that actually move the numbers.

Digipeak operates as a 360-degree growth agency from offices in London, Istanbul, and Texas, holds Google and Meta Partner status, and runs retention measurement and lifecycle programs for e-commerce, SaaS, and B2B clients. If you are not certain the retention number you report every month is the one that fits your business, that is exactly where the conversation should start.