Understanding SaaS LTV to CAC Ratio
How we calculate. LTV:CAC = customer lifetime value ÷ customer acquisition cost. See our methodology and accuracy policy .
Real-world scenario: A typical SaaS LTV to CAC Ratio case uses customer ltv 3600 and cac 1200. Enter the same figures below to reproduce the worked path.
What is SaaS LTV to CAC Ratio?
A unit-economics KPI. Distinct from finance loan-to-value (mortgage LTV) on the Finance hub.
- Customer LTV = lifetime value of a customer
- CAC = fully loaded acquisition cost
- Same cohort basis
The Formula
Worked Example
Common Use Cases
- Growth efficiency: LTV vs CAC
- Channel reviews: payback quality
- Fundraising packs: unit economics
Pro Tips
- Don’t use Finance loan-to-value
- Freeze LTV method (gross margin, churn)
- Pair with CAC payback months
| Scenario | When to use |
|---|---|
| Percent of a number | Finding a part of a whole (tax, tip, score) |
| Percent change | Comparing old vs new values |
Limitations: SaaS LTV to CAC Ratio results are educational SaaS / subscription planning aids—not accounting, tax, or investment advice. Confirm definitions with your billing system and board reporting standards.
Common mistakes
- Swapping part and whole: The denominator must be the full total, not a subset.
- Rounding too early: Carry extra decimal places through multi-step work before rounding the final percent.
- Mixing percent and decimal forms: Enter rates in the format the calculator labels expect.
The worked example for saas ltv cac ratio was verified with the calculator form on this page—enter the same values to confirm the result.
When to use this calculator
- Use this page when your wording matches saas ltv cac ratio and the form labels on screen.
- Use percent of a number for “what is X% of Y?” problems.
- Use number is what percent when you know part and whole and need the percent.
Still unsure about saas ltv cac ratio? Start with the quick answer above, then open the linked calculator that matches your wording.
❓ Frequently Asked Questions
How do I use this saas ltv cac ratio calculator?
For saas ltv cac ratio, enter the values labeled on the form, then press Calculate. Compare the result to the worked example on this page.
What formula does this page use?
See the quick answer and formula box above for saas ltv cac ratio—the same percentage calculator expression is applied to your inputs.
What if my result looks wrong?
When checking saas ltv cac ratio, re-check part vs whole (or rate vs base), rounding, and whether percents were entered as 25 rather than 0.25 when the form expects percents.
Authoritative References
For SaaS metrics and subscription performance concepts, consult:
- SaaStr — SaaS growth and metrics context
- For Entrepreneurs — SaaS metrics explainers
- Bessemer Venture Partners — cloud / SaaS industry research