Unprofitable — costs exceed value
The one ratio that reveals if growth is healthy
The LTV:CAC ratio compares the lifetime value of a customer (LTV) with the cost to acquire them (CAC). It condenses your entire unit economics into a single number and answers the most important question in growth: does each customer bring back more than they cost? It is the metric investors ask about first, because it separates businesses that can scale profitably from those that simply buy revenue at a loss.
This calculator divides your LTV by your CAC and returns the ratio. The widely cited benchmark is 3:1 — a customer worth about three times what they cost to acquire. Around that level you have healthy margins to reinvest in growth. Below 1:1 you lose money on every customer and more marketing only deepens the hole. Interestingly, a very high ratio like 5:1 or more is not automatically good news; it can mean you are underinvesting in acquisition and leaving growth on the table.
The ratio is only as reliable as the two figures behind it, so measure LTV on profit and CAC on fully loaded acquisition costs. It is also worth watching CAC payback — how many months of margin it takes to recover the acquisition cost — because a strong ratio with a long payback can still strain cash flow. Track the ratio over time; a declining trend is an early signal that a channel is saturating.
TriMediaX works both levers at once: lowering CAC through efficient acquisition and lifting LTV through retention and better offers, so the ratio moves in your favour. Check yours here, then let us help you widen the gap.
Frequently asked questions
How do I calculate the LTV:CAC ratio?+
Divide customer lifetime value by customer acquisition cost. An LTV of 900 and a CAC of 300 gives a ratio of 3:1.
What is a good LTV:CAC ratio?+
About 3:1 is the classic benchmark — enough margin to fund growth. Below 1:1 is unprofitable; far above 3:1 can mean you are underinvesting in acquisition.
Can the ratio be too high?+
Yes. A very high ratio often means you could profitably spend more to acquire customers and grow faster, rather than leaving demand untapped.
What is CAC payback period?+
It is how many months of gross margin it takes to recover a customer's acquisition cost. A healthy ratio with a long payback can still pressure cash flow.
How does TriMediaX improve unit economics?+
We reduce CAC with efficient targeting and creative while raising LTV through retention and offers — widening the gap between what customers cost and what they are worth.
Marketing, engineered.
TriMediaX turns numbers like these into revenue with data science, neuromarketing and behavioural analysis.