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SaaS LTV, CAC & Payback Period Metrics Calculator

Calculate SaaS Customer Lifetime Value (LTV), Customer Acquisition Cost (CAC), LTV:CAC unit economics ratio, monthly churn rate, and CAC payback period in months.

Calculation Results

LTV to CAC Ratio: 6.40x Excellent Unit Economics (> 3.0x Benchmark)
Customer Lifetime Value (LTV): $4,800 Avg Lifetime: 40.0 Months
Customer Acquisition Cost (CAC): $750
CAC Payback Period: 6.25 Months (Top quartile venture capital benchmark < 12 mo)

About This Calculator

Calculate SaaS Customer Lifetime Value (LTV), Customer Acquisition Cost (CAC), LTV:CAC unit economics ratio, monthly churn rate, and CAC payback period in months.

Frequently Asked Questions

What is a healthy LTV to CAC ratio for SaaS companies?

In venture-backed software businesses, an LTV:CAC ratio of 3.0x or higher is considered healthy. A ratio under 3.0x indicates excessive acquisition costs or high churn, while a ratio over 5.0x suggests the company is underinvesting in marketing and could grow faster.

What is CAC Payback Period?

CAC Payback Period is the number of months required for a customer's gross profit to fully pay back the sales and marketing dollars spent to acquire them. Venture capital benchmarks target under 12 months for SMB SaaS and under 18 months for Enterprise SaaS.

Why must Gross Margin be included in Customer Lifetime Value (LTV)?

LTV measures lifetime gross profit, not revenue. Revenue without gross margin ignores hosting costs, payment processing fees, and customer support infrastructure required to serve the client.

What is the difference between logo churn and net revenue churn?

Logo churn tracks the percentage of customer accounts that cancel each month. Net Revenue Churn factors in upgrades, expansions, and downgrades; a company can have positive customer logo churn while achieving negative net revenue churn through strong account expansion.