What is churn rate?
Every customer you lose is revenue your new sales have to replace before they can add growth. Churn rate tells you how big that hole is.
How to calculate churn rate
Formula: Customer churn rate = (Customers lost during the period ÷ Customers at the start of the period) × 100
Say a hypothetical B2B software company starts the quarter with 200 customers and 10 cancel. Its quarterly churn rate is 10 ÷ 200 × 100 = 5%. New customers signed during the quarter stay out of the math, so the number reflects only the base you started with.
Churn is the flip side of retention rate.
Formula: Retention rate = 100% − Churn rate
In the example, 5% churn means 95% retention for the quarter. Pick one period (monthly, quarterly or annual) and stick with it, since a monthly rate and an annual rate look very different for the same business.
Customer churn vs revenue churn
Customer churn counts logos. Revenue churn counts dollars, and it often tells a truer story.
| Metric | What it measures |
|---|---|
| Customer churn | Share of customers who left |
| Gross revenue churn | Recurring revenue lost to cancellations and downgrades ÷ starting recurring revenue |
| Net revenue churn | Revenue lost minus revenue gained from upgrades and expansion, ÷ starting recurring revenue |
Picture a hypothetical firm that loses ten small accounts in a year while one large account doubles its order. Customer churn looks bad. Net revenue churn may be negative, which means the existing base grew on its own.
Ecommerce brands rarely have contracts, so churn is defined by inactivity: a customer with no order inside a set window, such as twice your typical reorder cycle. Cohort analysis by first-order month makes the pattern visible.
What is a good churn rate?
It depends on your model. Contract length, customer size, price point and how often people need what you sell all move the number. Monthly subscriptions sold to small businesses tend to churn faster than multi-year contracts with large manufacturers.
The most useful benchmark is your own history. Track churn by cohort, segment and acquisition channel. If customers from one channel leave twice as fast, that channel is costing more than its customer acquisition cost suggests. Set a target from your own baseline, then check whether changes to targeting, onboarding or service move it quarter by quarter. Churn also feeds straight into customer lifetime value and your LTV:CAC ratio.
How marketing reduces churn
Sell to the right fit
Customers outside your ideal customer profile leave first. Target and qualify for fit, and churn drops before the contract is signed.
Promise what you deliver
A value proposition that oversells creates churn later. Set expectations your product and team can meet.
Onboarding content
Guides, videos and emails that get customers to their first win quickly. Early value is one of the clearest signs a customer will stay.
Education over time
Useful content marketing keeps customers using more of what they bought, and spotting new reasons to buy more.
Listen and respond
Reviews, surveys and support tickets show why people leave. Fix the cause, and answer public reviews. See AI reputation management.
Win-back and expansion
Use CRM data to trigger reorder reminders, upgrade offers and win-back campaigns. Our CRM integrations work makes those triggers reliable.
From our work
We track our own churn closely. 95% of new clients since 2020 stayed longer than 12 months (38 of 40), and our average client relationship is 3 years 10 months.
Two habits help. First, we’re selective: we only take engagements with a strong probability of success, which is fit-based targeting applied to ourselves. Second, clients see results continuously through 24/7 real-time dashboards and quarterly strategy reviews, so value stays visible between renewals. See what clients say on our reviews and case studies page.
Related terms: Quarterly Business Review, plus unit economics and payback period.
Frequently asked questions
How do you calculate churn rate?
Divide the number of customers lost during a period by the number you had at the start of that period, then multiply by 100. For revenue churn, use recurring revenue lost in place of customer counts.
What is the difference between churn rate and retention rate?
They’re two sides of one number. Churn is the share you lost; retention is the share you kept. For the same period, they add up to 100%.
What is a good churn rate?
It varies by business model, contract length and customer size. Compare against your own past periods and cohorts, and look for segments or channels that churn faster than the rest.
What causes customer churn?
Poor fit, slow time to value, unmet expectations set during the sale, weak support and better offers from competitors. Most of these trace back to who you acquired and what you promised them.
Win customers who stay
We attract buyers who fit, so the pipeline we help build turns into customers who stick around.
