Formulas and metrics

Customer Lifetime Value (CLV)

The total revenue a business can expect from a single customer account over the entire duration of their relationship.

Tomba Team
March 23, 2026

Customer lifetime value is the total revenue that a business can reasonably expect to generate from a single customer account throughout the entire relationship. For subscription-based B2B companies, CLV is calculated by multiplying the average revenue per account by the gross margin and dividing by the churn rate. This metric quantifies how much a customer is worth over time, not just at the point of initial sale.

CLV is critical for making informed decisions about how much to invest in customer acquisition and retention. If your CLV is high, you can justify higher acquisition costs because each customer generates substantial revenue over time. Conversely, a low CLV constrains your acquisition budget and signals a need to improve retention or increase average revenue per account.

Understanding CLV also helps sales teams prioritize prospects and accounts. Prospects from segments with historically high CLV deserve more investment in outreach and relationship-building.

Key Points

  • The total expected revenue from a single customer over the full relationship duration
  • Guides acquisition spending, retention investment, and strategic planning
  • Calculated using average revenue, gross margin, and churn rate for subscription businesses

How It Works

For SaaS companies, a simplified CLV formula is: average monthly revenue per account multiplied by gross margin, divided by monthly churn rate. This produces an estimate of the total gross profit a customer will generate before churning. More sophisticated models factor in expansion revenue, support costs, and discount rates.

Best Practices

  • Calculate CLV by customer segment to identify your most valuable profiles
  • Invest in retention and expansion to increase CLV alongside acquisition efforts

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