Did they leave, or did the payment? Splitting churn into two piles changes what you do about both.
Something i wish someone had told me before i built anything in customer success:
Churn isn't one thing. it's two, and they need opposite fixes.
The first kind is a decision. someone weighed your product and said no. that's a product problem or a fit problem, and no amount of "just checking in" emails changes it.
The second kind nobody decided. a card expired the week before renewal. a finance contact changed jobs and the invoice email went to a dead inbox. a launch discount was supposed to end in month three and is still running in month eighteen. the customer is using the product this morning. they just aren't paying for it, and in most books that's 20 to 40 percent of what gets called churn.
The mistake almost every team makes is sending the CSM after both. the CSM writes a heartfelt "is everything ok?" to a customer whose only problem is a 16-digit number that changed. the customer is confused. the CSM is demoralised. the money was recoverable the whole time with a pay link and a follow-up on day 3.
So the first question to ask about any churned account isn't "why did they leave." it's "did they leave, or did the payment?" once you split the pile, the second half turns out to be a billing-ops problem with a known fix, and the first half gets a lot smaller and a lot more honest.
I wrote up the seven ways revenue leaks without a decision and how each one shows up in stripe data, because once you know what to query it's a 20 minute job: