What Is Customer Lifetime Value (LTV)? Formula, Benchmarks & How to Improve It
Customer Lifetime Value (LTV), also called Customer Lifetime Value (CLV) or simply lifetime value, is the total revenue a business can expect to generate from a single customer throughout the entire duration of their relationship. It is one of the most important metrics in subscription and SaaS businesses because it directly determines how much a company can afford to spend acquiring customers and how profitable those customers ultimately are.
LTV is always evaluated in relationship to Customer Acquisition Cost (CAC) — the two together form the unit economics that determine whether a business model is fundamentally viable.
How to Calculate LTV
Simple LTV Formula
LTV = Average Revenue Per Customer × Customer Lifetime
If the average customer pays $100/month and stays for 24 months, LTV = $2,400.
Customer Lifetime can be derived from churn rate: Customer Lifetime = 1 ÷ Monthly Churn Rate
If monthly churn is 5%, average customer lifetime = 1 ÷ 0.05 = 20 months.
Gross Margin-Adjusted LTV
LTV = (Average Revenue Per Customer × Gross Margin) ÷ Churn Rate
This more accurate version accounts for the fact that not all revenue contributes equally to business value — the costs of serving customers must be subtracted.
Example: $100 average MRR, 70% gross margin, 5% monthly churn: LTV = (100 × 0.70) ÷ 0.05 = $1,400
The LTV:CAC Ratio
The relationship between LTV and CAC is the single most important unit economics metric for a subscription business:
- LTV:CAC < 1:1 — Losing money on each customer; unsustainable
- LTV:CAC 1:1 – 3:1 — Marginal economics; limited growth capacity
- LTV:CAC 3:1 — Generally considered healthy for SaaS businesses
- LTV:CAC > 5:1 — May indicate under-investment in growth
CAC Payback Period (months of revenue needed to recover acquisition cost) is a related metric: LTV:CAC indicates long-term profitability; payback period indicates capital efficiency.
What Drives LTV Higher
Reducing Churn
Since LTV = Revenue ÷ Churn Rate, even small reductions in churn produce significant LTV improvements. A product that reduces monthly churn from 5% to 3% increases average customer lifetime from 20 months to 33 months — a 65% increase in LTV with no price change.
Increasing Average Revenue Per Customer
Expansion revenue — users upgrading plans, adding seats, purchasing add-ons — directly increases LTV from existing customers without any additional acquisition cost.
Expanding Customer Lifetime Through Retention
Building products that customers genuinely depend on and that integrate deeply into their workflows creates the stickiness that extends customer relationships.
Improving Gross Margin
Operational improvements that reduce the cost of serving customers (customer success efficiency, infrastructure cost reduction, support automation) improve gross margin and therefore LTV.
LTV by Segment
Aggregate LTV can mask dramatic differences across customer segments. Enterprise customers typically have much higher LTV than SMB customers — not just because they pay more, but because they churn less and expand more. Segmenting LTV by plan tier, company size, industry, or acquisition channel reveals which segments are most valuable and should receive the greatest acquisition and retention investment.
LTV in Product Development Decisions
LTV informs product priorities by creating a clear financial framework for evaluating investments:
- Features that reduce churn have direct LTV impact — even small churn reductions can be worth substantial development investment
- Features that enable expansion revenue grow LTV without new customer acquisition
- Products designed for segments with naturally longer lifetimes (enterprises, regulated industries) tend to have higher LTV than those built for higher-churn segments (SMBs, consumers)
Key Takeaways
Customer Lifetime Value is the financial lens through which product investment decisions should be evaluated. When product teams understand LTV by segment and understand what drives it — retention, expansion, and gross margin — they can make more financially grounded decisions about where to invest in the product and who to build it for.