Cited from real sources 6 min read Updated May 2026

A framework by Jason Lemkin

Jason Lemkin's ICP-and-Churn Diagnosis for SaaS

Jason Lemkin's ICP-and-churn diagnosis is a way to read a high churn rate before you assume it is a product gap. The claim: most SaaS churn is not a product problem, it is a customer problem. When churn runs abnormally high for your segment, the usual cause is that you sold to the wrong ideal customer profile, not that the product is weak. Fix the buyer, and the retention math fixes itself.

The diagnosis in one line

You have something, but it ain't SaaS.

Lemkin's line to founders at a million in revenue with abnormally high churn. The product can be good. The segment is wrong.

Jason Lemkin 20VC, E1157 Watch at 54:23

The framework

Churn is a verdict on who you sold to

When churn climbs, the instinct is to look at the product. Add the missing feature, fix onboarding, ship faster. Lemkin's diagnosis starts somewhere else. Before you treat churn as a product gap, ask whether the number is normal for the customer you actually signed. A 3 to 4 percent monthly churn rate is endemic to very small businesses; the same number from an enterprise book of business means something is badly broken. The rate only means something relative to the segment, and most teams never set that baseline. They benchmark against a number from a blog post instead of against the buyer sitting in their own pipeline.

The reframe matters because the two diagnoses lead to opposite work. If churn is a product problem, you build. If churn is a customer problem, you change who you sell to, which is positioning and go-to-market, not roadmap. One is a quarter of engineering; the other is a different sales motion, price point, sometimes a different buyer. Lemkin's pattern from years of investing is that abnormally high churn almost always traces to the second cause. Small businesses cancel everything the day the spend stops paying back. That is not a bug you can patch. It is the economics of the buyer you chose.

So the framework is a triage, not a fix. Establish what churn is normal for your ICP, compare your actual number to that baseline, segment the cohorts so the blended average cannot lie to you, and only then decide whether you are looking at a weak product or a wrong customer. Most of the time, Lemkin's view is that you are looking at the wrong customer wearing a product costume.

How to apply it

Running the diagnosis on your own number

This is a sequence of honest questions about your buyer, not a churn-reduction checklist.

  1. 1

    Set the segment baseline first.

    Decide what monthly churn is normal for the customer you actually sell, before you judge your own. Very small businesses churn 3 to 4 percent a month as a rule; mid-market and enterprise should be a fraction of that. The baseline is the segment, not an industry average.

  2. 2

    Compare your number to the segment, not to a blog post.

    If you sell to enterprise and lose 4 percent a month, that is abnormal and almost certainly a customer-fit problem. If you sell to very small businesses and lose 4 percent, that is endemic, and the question shifts to whether your model can survive it.

  3. 3

    Run the substitution test.

    Ask whether churned customers left for a competitor or left the category entirely. Leaving the category is a segment-fit signal, not a feature-gap signal. No feature wins back a buyer who never needed the category.

  4. 4

    Check whether topline growth is hiding the churn.

    SMB revenue grows fast early because you acquire customers in a day, not a year, which masks a churn rate compounding underneath. Look at retained revenue cohorts, not new logos.

  5. 5

    Decide build versus re-segment.

    Normal churn for the segment with the product as the constraint means build. Abnormal churn for the segment means the work is changing who you target.

  6. 6

    If you keep the hard segment, accept the requirement.

    SMB software has to be excellent, self-serve, and product-led, because the customer can and will cancel the moment it stops paying back. That is a requirement of the segment, not a strategy you opt into.

  7. 7

    Re-run it every quarter.

    As you move up-market or add a segment, the acceptable baseline moves with it. Treat the diagnosis as a recurring read, not a one-time audit.

On what he does when he sees a number that is abnormal for the segment, Lemkin was blunt:

I have passed on every single company that had, for their segment, abnormally high churn. I've gone back to so many founders that were at a million with 78% churn, I'm like, you have something, but it ain't SaaS. It's not SaaS.
Lemkin on segment-relative churn Watch at 54:23

Notice he does not say the product is bad. He says it is not SaaS. The business may be real, just not a high-retention software business, because the buyer it attracted does not behave like one. That is the whole diagnosis in two sentences.

Boundary conditions

When it works, when it fails

Works best when

  • Churn is high and the team is about to spend a quarter building features to fix it
  • You can cleanly segment your retention data by customer type, not just blend it
  • The product is genuinely solid in at least one segment but the overall number looks bad
  • You still have room to change who you target before capital locks the strategy in

Fails when

  • The product really is broken and you use the segment story to avoid fixing it
  • You sell only to very small businesses, where some churn is endemic and re-segmenting is not an option
  • You treat the diagnosis as permission to ignore self-serve and product quality the segment requires
  • You blend all customers into one churn number and never see which segment is leaving

The diagnosis is not a license to stop building. Lemkin is explicit that the hard segment has its own non-negotiable bar:

They'll look at their credit card statement and they'll cancel everything. It's brutal. So SMB software has to be better, it has to be self-serve, it has to be PLG. It's not a choice, it's a requirement.
Lemkin on the SMB requirement Watch at 58:35

The honest caveat: this is a triage tool, not an excuse. If the answer is wrong customer, the fix is positioning and go-to-market. If it is wrong product for a segment you have chosen to keep, you still have to build, and for SMB the bar is higher, not lower.

The sources

Where Lemkin discusses this

All three excerpts come from the same 20VC episode (E1157, the SMB churn segment). Listen to the full passage from roughly 53:00 onward for the complete argument.

Useful? Pass it to a founder blaming the roadmap for churn.

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