What is the LTV:CAC ratio and why does it matter?
The LTV:CAC ratio compares how much a customer is worth (Lifetime Value) to what it costs to acquire them (Customer Acquisition Cost). A ratio of 3:1 means each customer generates $3 in lifetime value for every $1 spent acquiring them. It is the single most important metric for assessing whether a business model is economically viable and scalable.
What is a good LTV:CAC ratio?
The widely accepted benchmark is 3:1 or higher. Below 1:1 means you lose money on every customer. Between 1:1 and 3:1 is marginal — the business may survive but can't scale profitably. Above 3:1 is healthy. Above 5:1 may indicate you are under-investing in growth and leaving market share on the table.
How can I improve my LTV:CAC ratio?
You can improve it from either side: reduce CAC by finding more cost-effective channels, improving conversion rates, or leveraging referrals; or increase LTV by reducing churn, raising prices, increasing purchase frequency, or adding upsells. Reducing churn is often the highest-leverage lever.
What is a good CAC payback period?
SaaS companies typically target a payback period of 12 months or less. Under 6 months is excellent. Over 18 months is a warning sign — your business is tying up capital for a long time before recovering it. E-commerce businesses often need payback periods under 3–6 months given lower margins and higher churn.