Churn rate is the percentage of customers or revenue you lose over a specific period. If you started January with 200 customers and 10 of them cancelled by the end of the month, your monthly customer churn rate is 5 percent.
That one number tells you more about the health of a subscription business than almost anything else. High churn means you are filling a leaky bucket: every dollar you spend on acquisition is partly wasted because customers leave before they pay back what it cost to win them.
This guide covers how to calculate churn correctly, the difference between customer churn and revenue churn, why most published benchmarks are misleading, and a practical method for churn rate analysis that actually leads to fixes.
What Is Churn Rate?
Churn rate measures loss over time. There are two flavors, and mixing them up leads to bad decisions.
Customer churn, sometimes called logo churn, counts how many accounts cancelled. Revenue churn counts how much recurring revenue those cancellations and downgrades removed. They can move in opposite directions: you can lose lots of small accounts while revenue churn stays low, or lose one big account and watch revenue churn spike while customer churn barely moves.
Most teams should track both. Customer churn tells you how many relationships are failing. Revenue churn tells you how much it hurts.
How to Calculate Customer Churn Rate
The basic formula is simple.
Customer churn rate = customers lost during the period, divided by customers at the start of the period, multiplied by 100.
A few rules keep the number honest. First, do not count new customers who signed up and cancelled inside the same period in your starting denominator, or your rate will look artificially low. Second, decide whether free trials count as customers. In most cases they should not, because a trial that never converts is a conversion problem, not a churn problem. Third, pick a period, monthly or annual, and stick with it.
One trap worth calling out: you cannot annualize monthly churn by multiplying by 12. Churn compounds. A 5 percent monthly churn rate means you retain 95 percent each month, and 0.95 raised to the 12th power is roughly 0.54. That is about 46 percent annual churn, not 60 percent. Small monthly numbers hide large annual losses.
Revenue Churn: Gross vs Net
Revenue churn comes in two versions, and the gap between them is where a lot of investor decks get creative.
Gross revenue churn = MRR lost to cancellations and downgrades during the period, divided by MRR at the start of the period. This number can never be negative. It answers one question: how much revenue are we losing from the existing base, ignoring everything good that happened?
Net revenue churn subtracts expansion revenue, meaning upgrades and add-ons from existing customers, from the losses before dividing. If expansion outweighs losses, net revenue churn goes negative, which is a good thing despite the name.
The inverse framing is net revenue retention, or NRR. NRR = starting MRR minus churned MRR minus contraction MRR plus expansion MRR, all divided by starting MRR. An NRR above 100 percent means your existing customer base grows on its own, even before you add a single new customer.
Report gross and net separately. Net churn alone can hide a serious retention problem behind a few big upsells.
A Worked Example
Here is a fully made-up example to show the math, not a benchmark of any real company.
Suppose you start the month with 100,000 dollars in MRR across 400 customers. During the month, 12 customers cancel, removing 4,000 dollars in MRR. Another few customers downgrade, removing 2,000 dollars. Existing customers upgrade by a combined 8,000 dollars.
Customer churn rate: 12 divided by 400 = 3 percent for the month.
Gross revenue churn: 4,000 plus 2,000 in losses, divided by 100,000 = 6 percent.
Net revenue churn: 6,000 in losses minus 8,000 in expansion = negative 2,000, divided by 100,000 = negative 2 percent. Equivalently, NRR is 102 percent.
Notice how the three numbers tell three different stories from the same month. Customer churn looks fine, gross revenue churn is concerning, and net revenue churn looks great. You need all three to see clearly.
What Is a Good Churn Rate?
Here is the honest answer most articles avoid: it depends so heavily on your segment that any single benchmark number is close to useless.
Churn varies wildly by customer size, contract length, price point, and sales motion. A self-serve product selling monthly plans to freelancers will naturally churn far more than an enterprise platform on annual contracts with a procurement process behind every deal. Comparing your monthly SMB churn to an enterprise benchmark will either terrify you or flatter you, and both are wrong.
A few directional patterns do hold up. Larger customers churn less than smaller ones. Annual contracts show lower measured monthly churn than monthly contracts, partly because cancellation opportunities come less often. Products wired into daily workflows churn less than nice-to-have tools.
The most useful benchmark is your own history. Is churn trending down cohort over cohort? Is this quarter better than last quarter for the same segment? That comparison is fair. A number pulled from a survey of companies that look nothing like yours is not.
How to Run a Churn Rate Analysis
A single blended churn number tells you that you have a problem. Analysis tells you where. Work through four cuts.
First, cohorts. Group customers by signup month and track each group over time. If newer cohorts retain better than older ones, your product and onboarding are improving even if blended churn looks flat, because the blended number is dragged by old cohorts.
Second, segments. Split churn by plan, company size, acquisition channel, and use case. It is common to discover that one segment churns at several times the rate of another, which means you have a targeting problem as much as a retention problem.
Third, reasons. Add a short cancellation survey at the point of churn and follow up with a few exit interviews each month. Separate voluntary churn, where the customer chose to leave, from involuntary churn, where a payment failed. Involuntary churn is often a meaningful share of the total and is the cheapest kind to fix.
Fourth, leading indicators. Churn is a lagging metric; by the time it shows up, the decision was made weeks earlier. Look for usage drops, login gaps, support ticket spikes, and champion departures, then act while there is still time.
Levers That Actually Reduce Churn
Once the analysis points somewhere, pull the matching lever.
Fix onboarding first. Most churn risk is created in the first days of a customer relationship. Define the activation milestone that correlates with retention in your product, then redesign onboarding to get every new customer there fast.
Attack involuntary churn with dunning. Retry failed cards on a smart schedule, email customers before their card expires, and offer a backup payment method. This is unglamorous work with a direct payoff.
Shift customers to annual plans with a fair discount. Fewer renewal decisions means fewer chances to leave, and the customers who accept annual terms are usually the more committed ones anyway.
Fix acquisition targeting. If one segment churns badly, stop acquiring it or reposition for it. Teams that run outbound with a platform like ClickReach can tighten list criteria so sales stops closing accounts that were never a fit, which lowers churn before those customers ever sign up.
Close the loop on cancellation reasons. If the same missing feature or confusing workflow appears in exit surveys month after month, that is your product roadmap talking.
Finally, run win-back campaigns. A short, honest email to customers who left three to six months ago, mentioning what has improved since, costs almost nothing and recovers a real fraction of lost accounts for many teams.
FAQ
What is the difference between churn rate and retention rate?
They are two sides of the same coin. Retention rate equals 100 percent minus churn rate for the same period and definition. A 4 percent monthly customer churn rate is a 96 percent monthly customer retention rate.
How often should I measure churn?
Calculate monthly, but judge trends over quarters. Monthly numbers for small customer bases are noisy; three cancellations in a base of 60 customers swings the rate by 5 points and means very little on its own.
Can churn rate be negative?
Customer churn cannot go below zero; you cannot un-lose a customer. Net revenue churn can go negative when expansion revenue from existing customers exceeds revenue lost to cancellations and downgrades. That state, often called net negative churn, means your revenue grows even with zero new sales.
Should I include downgrades in churn?
Include them in revenue churn as contraction, but not in customer churn, because the account is still with you. Tracking contraction separately shows whether customers are leaving entirely or just shrinking.
The Bottom Line
Churn rate is a simple division problem with a lot of judgment hiding inside it. Define your terms once, calculate customer and revenue churn separately, and never annualize monthly churn by multiplying by 12.
Then skip the benchmark hunting. Cut your churn by cohort, segment, and reason, find the one or two places where the losses concentrate, and pull the specific lever that matches. That loop, run every quarter, beats any generic retention playbook.
