LTV:CAC Ratio
The LTV:CAC ratio doesn't tell you if you're growing. It tells you whether you deserve to grow with the capital you're burning to do it.
“An 8x ratio is not a success. It's often proof that the company has stopped investing in its own growth.”
Otto GTM ObservatoryHow to read it from a GTM perspective
The LTV:CAC ratio is the tool a CFO uses to decide whether to authorize more acquisition budget. Above 3x, every euro invested in acquisition generates net value; below that threshold, growth costs more than it returns.
The ratio should always be calculated by channel and by segment, never as a company average: a channel at 2x consumes cash while another at 6x generates it, and the average can hide both signals.
Anti-patterns
The classic mistake is celebrating a high ratio without looking at the Payback Period. A 6x reached in 30 months puts far more strain on cash than a 3.5x reached in 8 months.
A second, more subtle mistake: using an LTV projected on optimistic retention assumptions, never validated against real historical churn data, to make the ratio look stronger than it is.
Practical Application
A B2B company with an LTV of €68,000 and a CAC of €14,900 gets a ratio of 4.56x, above the sustainability threshold. Breaking it down by channel, the partner channel scores 2.1x (below threshold, needs review) while enterprise account-based marketing scores 6.8x: the right call is not to cut acquisition, but to reallocate budget from the first channel to the second.