Ad CAC vs LTV to CAC Ratio
What is the difference between Ad CAC and LTV to CAC Ratio? Side-by-side definitions, formulas, and benchmarks for two of the most-watched SaaS metrics.
Definitions
What is Ad CAC?
Ad CAC measures customer acquisition cost specifically for customers acquired through paid advertising.
What is LTV to CAC Ratio?
LTV to CAC Ratio compares customer lifetime value against customer acquisition cost to evaluate acquisition efficiency.
Ad CAC vs LTV to CAC Ratio at a Glance
| Ad CAC | LTV to CAC Ratio | |
|---|---|---|
| Category | Metrics | Metrics |
| Formula | — | LTV:CAC Ratio = LTV / CAC |
| Benchmarks | — | good: 3 x; great: 6 x |
| Calculator | — | LTV to CAC Ratio calculator |
When Each Matters
Ad CAC and LTV to CAC Ratio answer different questions. Ad CAC measures customer acquisition cost specifically for customers acquired through paid advertising. LTV to CAC Ratio compares customer lifetime value against customer acquisition cost to evaluate acquisition efficiency. In practice, healthy SaaS operators watch both, because each one catches failure modes the other misses.