The CLV formula that actually works
Steady-state CLV = (ARPU × Gross Margin %) ÷ Monthly Churn Rate. ARPU is average revenue per user per month. Gross Margin strips out cost of serving the customer (hosting, support, payment fees). Monthly Churn is the fraction of customers that cancel each month.
Example: SaaS with CHF 100/month ARPU, 80% gross margin, 2% monthly churn → CLV = (100 × 0.80) ÷ 0.02 = CHF 4,000. That's the gross profit one average customer is expected to deliver over their lifetime.
For higher-precision modelling, discount future cash flows at your cost of capital (often 10–15% for SMEs). For an SMB SaaS with 2% monthly churn, the discount adjustment reduces CLV by roughly 10–15%; for low-churn enterprise it reduces CLV by 25–40%.
The CLV formulas you should not use
Revenue-based CLV (ARPU ÷ Churn) ignores the cost of serving the customer. For a SaaS with 80% gross margin it overstates true CLV by 25%; for an agency with 30% gross margin it overstates CLV by 230%.
Average customer tenure × ARPU is mathematically equivalent only if churn is perfectly steady and known retrospectively. For a young business it dramatically overstates CLV because you haven't yet seen the long tail of churn.
Total historical revenue ÷ total customers ever acquired is a 'lifetime' value of past customers, not a forward-looking metric. Useful for diagnostics, dangerous for decisions.
LTV:CAC — the ratio that matters
Fully-loaded CAC includes sales salaries, marketing spend, sales tools and a fair allocation of overhead — not just paid ad spend. Divide quarterly fully-loaded acquisition cost by new customers acquired in the quarter.
LTV:CAC ratio. Below 1: you lose money on every customer. Between 1 and 3: precarious — survives only if churn drops or pricing rises. Between 3 and 5: the SaaS sweet spot — invest aggressively. Above 5: you're under-investing in growth and a competitor will overtake you.
Pair LTV:CAC with CAC payback period. CAC payback (months) = CAC ÷ (ARPU × Gross Margin). Target under 18 months for SMB and under 24 months for enterprise. Payback is more honest than LTV:CAC because it doesn't depend on long-term churn assumptions.
2026 European benchmarks by business type
B2B SMB SaaS: CLV CHF 2,500–8,000, CAC CHF 800–2,500, LTV:CAC 3–5, CAC payback 12–18 months. B2B Mid-Market/Enterprise SaaS: CLV CHF 30,000–150,000, CAC CHF 10,000–40,000, LTV:CAC 3–5, CAC payback 18–24 months. B2C subscription (Netflix-style): CLV CHF 150–400, CAC CHF 30–80, LTV:CAC 4–6, CAC payback 6–9 months.
E-commerce repeat: CLV (12-month) CHF 80–250, CAC CHF 25–60, LTV:CAC 2–5. Marketplaces (commission model): CLV varies wildly by buyer/seller cohort — track separately. Agency/services: CLV CHF 50k–300k, CAC CHF 5k–25k via outbound and content.
Cohort-based CLV: the gold standard
The most rigorous CLV approach tracks actual customer cohorts (e.g., 'customers acquired in Q1 2024') and observes their cumulative gross profit over time. After 24 months of cohort data, plot cumulative gross profit per customer vs months since acquisition — the curve flattens toward the true CLV.
Cohort CLV catches issues formula CLV misses: deteriorating early-month retention (broken onboarding), expanding ARPU (working pricing), late-life churn cliffs (annual contract renewals). Every well-run subscription business in Europe tracks cohort retention curves in a dashboard updated monthly.
Calculate your LTV and CAC ratio
Use the LTV Calculator to compute customer lifetime value and the LTV:CAC ratio for your business with 2026 European benchmarks.
Open the LTV calculator →Frequently asked questions
How is CLV different from LTV?+
They are the same thing. LTV ('lifetime value') is the older term, CLV ('customer lifetime value') the newer. Investors use both interchangeably.
Should I segment CLV by customer type?+
Yes — always. A single blended CLV hides the fact that enterprise customers may have 10× the CLV and 5× the CAC of SMB customers. Segment by plan, by acquisition channel, and by company size at minimum.
How does churn rate affect CLV?+
Dramatically — and non-linearly. Cutting monthly churn from 4% to 2% doubles CLV. Cutting from 2% to 1% doubles it again. The lowest-leverage spend in most SaaS businesses is customer-success investment, because it compounds into CLV.
What's a realistic gross margin for SaaS?+
Pure software SaaS: 75–85%. SaaS with significant managed services: 55–70%. Marketplaces: 70–85% on commission revenue. Hardware-bundled SaaS: 40–55%. Use your actual GM, not a benchmark, in CLV calculations.
Should I include expansion revenue in CLV?+
Yes, weighted by realistic expansion rates. If Net Revenue Retention is 110%, the average customer's revenue grows 10% per year, which roughly doubles the steady-state CLV. Be honest about whether you have actual expansion mechanics (seat-based pricing, usage growth) or are just hoping for upsells.
Related guides
Compound Interest Explained: The Math Behind Long-Term Wealth
How compounding really works, why time matters more than rate, and how to use it for retirement, savings and investment planning.
ETFs for Beginners in Europe: The 2026 Starter Guide
How to start investing in ETFs from Switzerland, Germany, France or Italy in 2026 — UCITS rules, accumulating vs distributing, brokers and tax.
FIRE in Europe: Financial Independence and Early Retirement 2026
How FIRE works in Switzerland, Germany, France and Italy — savings rates, the 25x rule, safe withdrawal, healthcare and country traps.