Lifetime value tells you how much you can afford to spend winning a customer.
CLV estimates the total gross profit a customer produces across the relationship. It ties marketing spend, pricing, support cost and retention into one number you can make decisions with.
The formulas
The simple version multiplies average revenue per account by gross margin and divides by churn rate. For a subscription business, monthly revenue and logo churn are a workable start.
More advanced models add a discount rate, expansion revenue and cohort-specific retention curves. Start simple and refine as the data gets better.
- Simple CLV: (ARPA × gross margin) / churn rate
- Cohort CLV: margin-adjusted revenue summed by tenure cohort
- Predictive CLV: a statistical model using behavioral signals
The inputs decide everything
CLV is only as good as what goes into it. Separate voluntary churn from failed payments, and segment by customer type, channel and product tier.
Include the cost to serve: support tickets, onboarding, infrastructure. Otherwise you are calculating revenue and calling it profit.
Using it
Compare CLV to customer acquisition cost to see your payback period. Many healthy B2B SaaS companies aim for an LTV to CAC ratio of 3:1 or better, though the benchmark moves by market.
High-CLV segments deserve premium support and product attention. Low-CLV segments need a price change, better qualification, or less acquisition spend.
Where it goes wrong
An average across all customers hides the profitable niche and the unprofitable bulk. Segment before you move any budget.
Leaving out expansion revenue understates a land-and-expand model badly. Read net revenue retention alongside CLV.
Written by the team at Ambivo, a business platform that keeps CRM, accounting and ERP on one customer record. This article is general guidance on the topic rather than a description of Ambivo features.