Customer Lifetime Value (CLTV): The Formulas, the Traps, and Real Disclosed LTVs
Lifetime value is the most quoted and most manipulated number in SaaS. Here's how to compute it honestly, why the standard formula flatters, and what real founders disclosed — including the CEO who defended an 11-month customer life on tape.
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Customer lifetime value (CLTV, LTV) estimates the total worth of a customer across their entire relationship with you. It exists to answer the spending question: if a customer is worth $2,000 over their life, what can you pay to acquire them? Two formulas cover practice:
LTV = average revenue per customer per period × average customer lifetimeThe simple version.
LTV = ARPU × gross margin ÷ periodic churn rateThe margin-honest version.
The second is the one investors respect, because dividing by churn derives lifetime from measured behavior (5% monthly churn → 20-month expected life) and the margin term stops you from valuing revenue you spend delivering. It also contains the trap that inflates half the LTVs ever pitched.
The churn-inverse trap
Dividing by churn assumes churn is constant across a customer’s life. It never is — and the honest founders in our archive prove it with their own numbers. Moz CEO Sarah Bird disclosed a funnel where early-month churn was brutal (self-serve signups discovering “SEO is a real job”) while customers who survived nine months churned less than 5% a year. Blend those cohorts into one churn rate and 1÷churn produces a lifetime no actual customer has. Her honest blended number looked terrible until she attached the structure:
The full defense is a masterclass. The discipline: compute LTV per cohort and per segment, never blended — the same lesson as reading churn generally.
Real disclosed LTVs, across the spectrum
| Company | Disclosed LTV | Context |
|---|---|---|
| Moz (SMB) | ~$1,600 | $140/mo, high early churn, near-zero CAC |
| Webflow | >$1,000 avg; $10K+ for agencies | ~$40/mo, ~2.5-year life, $85 CAC |
| Moz (mid-market) | ~$200,000 | ~600 accounts, direct sales |
| Showpad | ~$200,000 | $30K ACV, single-digit gross churn, LTV:CAC ~4 |
Disclosed figures from the GetLatka archive.
200xthe spread between Moz’s SMB and mid-market LTVs — inside one company
That spread is the whole argument for segmentation. And Webflow’s split (average ~$1K, agencies $10K+) shows the same physics one layer down: the blended number describes nobody.
LTV:CAC — the ratio that prices growth
LTV divided by customer acquisition cost is the return on a dollar of go-to-market. The bands:
- Below 3x — growth spends more than customers return.
- 3x — healthy, says the folk benchmark.
- 4x to 5.5x — where the disclosed numbers in our archive run: Showpad at 4x, deliberately spending into a two-year payback because churn was single-digit; Moz’s SMB machine at 5.5x.
- Far above 5x — usually under-investment in growth: the “too profitable” problem Semrush’s founders famously had before Eugene Levin joined to spend it.
Two caveats make the ratio honest: use margin-adjusted LTV (Showpad’s ~4x was computed that way), and remember LTV arrives over years while CAC leaves this quarter — which is why operators pair the ratio with payback months, and why Webflow’s sub-3-month payback mattered more than its 12x ratio.
Raising LTV without lying about it
The honest levers are the retention stack:
Onboarding that forces value: Workboard’s day-21 “euphoria,” Outreach’s 70%-adoption gate.
So surviving customers grow: Algolia’s usage pricing turned a $10K customer into $13K by year two.
Webflow’s zero-churn hosting layer is the model.
The dishonest lever is arithmetic: a longer assumed lifetime, a blended churn rate, an unmargined revenue number. The test a diligence analyst will run on your LTV is simple — cohort revenue curves, actuals only. Compute yours the way they will, and the number becomes a weapon instead of a liability.
Compare disclosed LTV, CAC and retention across thousands of SaaS companies at getlatka.com/saas-companies.
SourcesFounder disclosures from the GetLatka archive — principally Moz (CEO Sarah Bird), Webflow, and Showpad.