Customer Lifetime Value is the long-game scoreboard of any subscription business. A Berlin SaaS that earns EUR 100/month from a customer for an average of 36 months at 80% gross margin generates EUR 2,880 of CLV. That single number tells you the absolute ceiling on what you can spend to acquire that customer, the discount you can afford for an upgrade, and the cost of customer success you should fund.
Three formulas dominate. The simple model: CLV = ARPU × Gross Margin × (1 / Churn Rate). The DCF model: CLV = sum of discounted monthly gross profits. The cohort model: CLV = actual revenue from a real cohort over N years, projected forward. The simple model is fine for back-of-envelope; cohort is what investors trust.
CLV is half of the master ratio LTV:CAC. Below 1:1 the business destroys value; 3:1 is the healthy benchmark; 5:1+ usually signals underinvestment in growth — see Customer Acquisition Cost.
Simple CLV = ARPU × Gross Margin % × (1 ÷ Monthly Churn Rate) or DCF CLV = Σ (monthly gross profit × (1 ÷ (1 + r)^t)) for t = 1..N
Example: A Zurich SaaS has ARPU of CHF 200/month, 80% gross margin and 3% monthly churn. Simple CLV = 200 × 0.80 × (1 / 0.03) = CHF 5,333. If CAC is CHF 1,800, LTV:CAC = 2.96:1 — at the edge of healthy. Cutting churn to 2% raises CLV to CHF 8,000 and the ratio to 4.4:1.
Customer Lifetime Value: The Complete Definition
CLV measures total expected gross profit from a customer, not total revenue. Subtracting COGS matters because the unit economics depend on what actually reaches the bottom line. A SaaS with 80% gross margins has fundamentally different CLV from one with 50% (typically because of high hosting, support or third-party fees).
Time horizon also matters. Strict CLV captures the entire customer lifetime; practical CLV often caps at 3, 5 or 7 years to avoid over-reliance on long-tail assumptions. Investors in 2026 generally prefer a 5-year DCF CLV at a 10–15% discount rate as the standard for European SaaS.
How to Calculate CLV: Formula and Example
The simple formula works for steady-state businesses with stable churn. The DCF formula is more honest because it discounts future cash flows and lets you cap the horizon. The cohort method is most rigorous: take customers acquired in (say) January 2023 and compute the cumulative gross profit per customer through today — multiply by expected remaining lifetime.
Worked example: a Paris SaaS has 1,000 customers in the January 2024 cohort. Through June 2026 (30 months), they've contributed EUR 4.2M of gross profit, or EUR 4,200 per original customer. If 40% are still active at month 30 with average remaining lifetime of 24 months at EUR 150/mo × 75% margin, residual CLV per active customer = EUR 2,700, so total cohort CLV ≈ EUR 4,200 + 0.40 × 2,700 = EUR 5,280.
CLV in Switzerland, Germany, France and Italy
European CLV benchmarks track ACV more than country. Across CH/DE/FR/IT, mid-market B2B SaaS typically delivers EUR 20–60K CLV; enterprise EUR 150K+; SMB self-serve EUR 1,500–5,000. Country effects come through tax: Swiss SaaS keeps more gross profit per CHF revenue than French or Italian peers because corporate tax sits at 12–18% vs. 25–24%.
Currency strength matters when comparing CLV across borders. CHF-strong years can inflate Swiss CLV in CHF terms while EUR-denominated costs fall — useful for Swiss CFOs to disclose CLV at constant FX so trends are comparable. The MyEuroCalculator LTV Calculator handles currency normalisation in the projection.
Why CLV Matters
CLV is the single number that sets the upper bound on acquisition spend. If CLV is EUR 8,000, spending EUR 9,000 to acquire that customer is value-destruction; spending EUR 2,000 is value-creation. Every pricing change, every marketing channel decision, every account-management investment ultimately rolls into CLV.
Strategically, CLV-driven companies make different choices than ARR-driven companies. They invest more in onboarding (lifts retention by 30–50%), price for value not for transactions, and build customer success teams long before they hit Series B. The pay-off is durable cash generation that compounds.
CLV vs CAC: Key Differences
CAC is what you spend to win a customer; CLV is what you expect to earn from that customer. Their ratio is the unit-economics fingerprint of the business. CAC is paid now; CLV accrues over years — making CAC payback period the practical bridge between them.
Typical CLV by segment (European SaaS, 2026)
| Segment | ARPU/mo | Monthly churn | Gross margin | CLV |
|---|---|---|---|---|
| SMB self-serve | EUR 50–200 | 4–6% | 75% | EUR 1,000–4,000 |
| Mid-market | EUR 500–2,500 | 1.5–3% | 78% | EUR 15,000–60,000 |
| Enterprise | EUR 4,000–15,000 | 0.5–1% | 80% | EUR 400K–2.4M |
Common mistakes
CLV must subtract COGS. Using gross revenue inflates CLV by 25–50% and breaks the LTV:CAC ratio.
EUR 1,000 of gross profit in year 5 is not worth EUR 1,000 today. Apply a 10–15% discount rate for the DCF version.
1/churn implies an infinite tail. Cap at 5 or 7 years for honest investor-facing CLV.
Net dollar retention >100% means CLV is higher than ARPU × 1/churn. Layer in expected expansion to the cohort model.