How to calculate churn rate for a membership business

Churn rate is the number of members you lose in a period divided by the number you had at the start of it. Lose 6 of 200 members in a month and your monthly churn rate is 3%. That one division is the whole formula; the useful work is in what you count, how you annualize it, and which other views to read alongside it.

Quick answer: divide the members you lost this month by the members you had on day one, then multiply by 100. For example, 6 lost ÷ 200 at the start × 100 = 3% monthly churn, which is about 30.6% a year. The sections below show why, and what to watch for in a membership business.

The formula

Churn rate = members lost during the period ÷ members at the start of the period × 100

That is the standard form, and it is the one Stripe’s guide to churn rates uses too. Three details decide whether your number is honest:

1. The denominator is the start of the period. Not the end, and not an average. Using the starting count keeps the rate comparable month to month.
2. Members who join during the period are not in the denominator. They were not on the roll at the start. A member who joined on the 3rd and left on the 20th is an early exit; many businesses track those separately, which is a useful number on its own.
3. Pick one definition of “lost” and keep it. More on that below.

A worked example (made-up numbers)

These are round fictional numbers to show the arithmetic, not a benchmark.

	Count
Members on March 1	200
Left during March	6
New members who joined in March	9
Members on March 31	203

Monthly churn = 6 ÷ 200 = 3%. Notice what the end-of-month headcount hides: 203 looks like growth, and it is, but you also lost 6 people you worked to win. If you only watch the headcount, a business can grow and leak at the same time.

Annual churn is not monthly times twelve

If 3% leaves every month, you do not lose 36% a year, because each month’s losses come out of a smaller base. The right conversion is:

Annual churn = 1 − (1 − monthly churn) ^ 12

For 3% a month: 1 − 0.97¹² = 1 − 0.694 = about 30.6% a year. Almost a third of a roster turning over each year is a lot of replacing to do, and it is easy to miss when each month looks small.

Monthly to annual at a glance

Monthly churn	Annual churn
1%	11.4%
2%	21.5%
3%	30.6%
5%	46.0%

Each row uses the same conversion, 1 − (1 − monthly) ^ 12. Small-looking monthly numbers compound fast, which is why it pays to look at both.

Monthly or annual: which to use

Use monthly churn to run the business: it is fast enough to act on and it is what you compare month to month. Use annual churn to compare years, to plan how many new members you must win just to stand still, and to talk about retention in terms owners recognize. If your members sign twelve-month contracts, a monthly rate can look near zero until renewal month, so read annual churn and renewal rate alongside it.

Count revenue as well as heads

Two members are not equal if one pays $60 and the other pays $180 for a family plan. Revenue churn applies the same division to monthly recurring revenue instead of member count: dollars lost from cancellations and downgrades, divided by the dollars you billed at the start. If revenue churn is lower than member churn, you are mostly losing your cheaper memberships; if it is higher, the people leaving are your most valuable ones. Compare both.

Voluntary and failed-payment churn

Not everyone who leaves decided to. Split your lost members into two groups:

• Voluntary: the member chose to stop. They told you, or they stopped coming and then canceled.
• Failed payment: a card expired or was declined, the charge did not recover, and the account lapsed without a conversation.

The split matters because the fixes are different. Voluntary churn is solved in the room: the first month, the first belt, the relationship with an instructor. Failed-payment churn is solved at the back end: retry rules and a quick human contact. We wrote about it in the members you are losing to expired cards. Once you can see the two numbers separately, you know whether to improve classes or collections first.

The hands-on trap: which date counts?

Here is a detail every owner recognizes. A parent emails on the 18th to say their child is stopping at month end. Which month is the loss in?

Pick one rule and write it down. The most defensible: count the loss in the month the member stops being a member, which is the last day of the period they have paid for, not the day they told you. Counting it on the day they told you moves a loss into an earlier month and makes that month look worse than it was. Decide, too, how you treat paused or suspended members: if they are still on the roll they are not churn; if they have not come back when the pause ends, they are.

What a single rate cannot tell you

A churn rate is one number for the whole roster. The roster is a mix of people who joined last week and people who have trained for six years, and they behave very differently. Three views show what the blended number hides:

Cohort retention. Group members by the year they joined, and measure the share of each group still enrolled after 3, 6, 12 and 24 months. If the 2025 group is holding better at 6 months than the 2024 group did, something you changed is working. BlackBeltCRM’s Reports screen shows exactly this, for each joining year.

Tenure at cancellation. When do people leave? A chart of members leaving by the months they stayed shows whether you lose them in month two, at the first renewal, or after a year. Each peak points at a different problem.

Churn over time against a target. The same churn rate plotted month by month, against a line you set (the example screen on our home page uses 3%), shows direction. One bad month is noise; six rising months are a trend.

The same Reports screen shows what rank members leave at, and visits per member each week. For a martial arts school, that is where you find out whether people leave just before a test or after a long gap in attendance. Churn as a rate, tenure and cohorts are the views we think matter most, and none of them needs a spreadsheet when billing, attendance and member records are in one system. See retention reporting for the screens.

A simple monthly routine

1. On the first of the month, write down your member count.
2. At month end, count who left, and mark each as voluntary or failed-payment.
3. Divide, and record the rate beside last month’s.
4. Once a quarter, look at cohorts and tenure: are newer members staying as long as older ones?

Try it with your own numbers

Our membership churn calculator turns a rate into a yearly dollar figure from two inputs, with no sign-up, and nothing you type leaves your browser. It estimates what churn costs; this guide is how to find the rate you put into it. If you want the whole picture from your own history, start the 14-day free trial and import your members: the reports show cohort retention, tenure and churn rate from your real records.

Churn is not a verdict. It is a number that tells you where to look, and the businesses that keep members for years are mostly the ones that looked every month.

Questions people ask

How do you calculate monthly churn rate?

Count the members you had on the first day of the month, count how many of them left during it, divide the second number by the first and multiply by 100. 6 lost out of 200 at the start is 3%. New members who joined that month are left out of the calculation.

Should I track monthly or annual churn?

Track monthly, because it shows problems while you can still act, and convert to an annual figure when you need a yearly view. Annual churn from a monthly rate is 1 - (1 - monthly) ^ 12, not monthly times twelve.

How do paused or frozen members count in churn?

Pick one rule and keep it. A member who is still on the roll while paused is not churn. If they have not returned when the pause ends, count the loss in the month the pause ended.

What is the formula for churn rate?

Churn rate = members lost during the period divided by members at the start of the period, times 100. If you start the month with 200 members and 6 leave, churn is 6 / 200 = 3% for the month.

How do I turn monthly churn into annual churn?

Do not multiply by 12. Annual churn = 1 - (1 - monthly churn) ^ 12. A steady 3% a month is 1 - 0.97 ^ 12, about 30.6% a year, because each month's losses come out of a smaller base.

What is the difference between voluntary and involuntary churn?

Voluntary churn is a member deciding to leave. Involuntary churn is a member lost because a payment failed and nobody recovered it. They have different fixes: better training and follow-up for the first, card retry and prompt contact for the second.

What is a good churn rate?

We do not publish a benchmark because we cannot source one that fits your program, contract length and market. Track your own rate monthly and watch the direction. A rate that is falling is good news at any level.

What is cohort retention?

Group members by the period they joined, then measure what share of each group is still enrolled after 3, 6, 12 and 24 months. It shows whether newer members stay longer or shorter than older ones, which one blended churn number cannot.