How do agencies set and manage lifetime value LTV and customer acquisition cost CAC targets?

When our team sets LTV and CAC targets we start by pulling revenue per customer over the average lifecycle, then break it down by acquisition channel and customer segment. We map out retention curves, include gross margin, and set a realistic payback window. On the acquisition side we build media plans with break-even points tied to those margins and cap CAC by channel, usually staying below a third of forecasted LTV. We share those targets with account leads, update dashboards weekly, and run scenario models before big spend increases. If we see a channel’s CAC creeping up we pull spend, rework creative, or test new offers instead of blindly following the plan. Knowing the exact LTV per segment keeps acquisition decisions grounded in profitability, and reporting every sprint keeps the team accountable.

Agencies tie LTV and CAC through a target ratio, often 3 to 1, then monitor actual spend versus expected payback. We layer in churn data, adjust targets per channel, and use a rolling forecast so rising CAC triggers immediate testing rather than slower quarterly reviews.

In my agency we track LTV for each cohort, cap CAC at about 30 percent of that value, and revisit every month when spend shifts.