Client Lifetime Value (LTV)
Agency glossary · Updated July 2026
Definition
Client lifetime value (LTV) is the total gross profit a single client produces over the whole time they stay with the agency. It combines their average fee, the agency’s gross margin, and how long they typically stay, and it sets how much you can afford to spend winning similar clients.
Average monthly retainer x gross margin % x average client lifespan in monthsWhy it matters
LTV, compared to the cost of acquiring a client, tells you whether each dollar spent on new business comes back several times over. It is the clearest signal of whether the agency can scale profitably.
Use your own numbers
Agency gross margins commonly run about 50 to 65%, and client tenure varies widely, so calculate LTV from your realized data rather than an industry average.
Is customer lifetime value the same as LTV for an agency?
Same measure, different word for the person paying. Customer lifetime value, client lifetime value and LTV all mean the total gross profit a relationship produces before it ends. For agencies the word client is more accurate, because the number is driven by retainer length rather than repeat purchases. The figure worth pairing it with is acquisition cost: LTV on its own says a client was valuable, and LTV against what it cost to win them says whether the way you win clients is worth continuing.
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