Term
Customer Lifetime Value (CLV/LTV)
Customer Lifetime Value (CLV, also LTV) is the expected total value of a customer over the entire relationship — usually as contribution margin. Compared with acquisition cost (LTV:CAC ratio) it shows whether winning new customers is profitable.
Customer Lifetime Value (CLV/LTV) — explained in detail
Customer Lifetime Value (CLV) — synonymous with Lifetime Value (LTV) — quantifies the expected total value of a customer over the entire business relationship. It accounts for how often someone buys, how much per order, how long they stay a customer and what it costs to serve them. Done properly, it looks at contribution margin, not raw revenue.
A simple formula for transactional businesses is:
CLV = average order value × purchase frequency × customer lifespan
Example: €50 per purchase × 4 purchases/year × 5 years = €1,000 CLV. For subscription/SaaS models it is often calculated via margin and churn: ARPA × gross margin ÷ monthly churn rate (e.g. €120 × 0.80 ÷ 0.03 = €3,200).
The real steering value emerges in relation to acquisition cost (CAC, Customer Acquisition Cost). The LTV:CAC ratio = LTV ÷ CAC shows how much a customer brings in relative to the cost of winning them. As a rule of thumb, 3:1 is considered healthy: three euros of lifetime value per euro of acquisition — enough room for growth with profitable unit economics. SaaS often targets 3:1, lower-margin e-commerce sometimes 2:1.
Example / Practical relevance
An online shop calculates a CLV of €240 per customer. Acquiring them via paid channels costs €80 — a 3:1 ratio, so sustainable. If the shop reduces churn through better service, customer lifespan and thus CLV rise; suddenly it can spend more per new customer and still stay profitable. CLV thus reveals which advertising budget is even justifiable.
Distinction from similar terms
The CPA / Cost per Acquisition measures the cost of a single conversion; CAC more broadly covers all costs to win a paying customer. Both are the cost side — CLV is the value side over the whole relationship. CLV differs from plain revenue per customer by looking at margin and duration, and from short-term ROAS by its long time horizon.
Entdecke mehr
ROI (Return on Investment)
Top-level profitability KPI: profit relative to the investment made. Goes beyond pure ad spend and includes all relevant cost components.
LexikonReading email marketing KPIs in 2026 — open rate is dead, what counts now?
Open rate, CTR, CTOR, conversion rate, engagement score and revenue per email — what Apple MPP and iOS 18 distort and which metrics still hold up.
NewsBVDW guide 2026: two new KPIs for the AI-agent inbox
Germany's BVDW guide from 18 March 2026 introduces AI Agent Approval Rate and Meaningful Interaction Rate. What the KPIs are worth and what they change.