CAC Payback Period
Months required to recover customer acquisition costs
FORMULA
CAC Payback Period = CAC / (Monthly ARPU × Gross Margin %)
Alternate Calculations
Simplified
CAC / Monthly Profit per CustomerFrom Revenue
Average CAC / (Monthly Revenue per Customer)What is CAC Payback Period?
CAC Payback Period measures how long it takes to recoup the costs spent to acquire a customer. A shorter payback period indicates more efficient acquisition and faster return on investment. Typically ranges from 3-12 months for healthy SaaS companies.
Payback period directly impacts cash flow and is critical for assessing acquisition sustainability. Lower payback = faster cash recovery and more capital available for growth.
Chart
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350cac · JunCAC Payback Period
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Sample Data
| month | cac | monthlyProfit | paybackMonths |
|---|---|---|---|
| Jan | 400 | 150 | 2.67 |
| Feb | 390 | 160 | 2.44 |
| Mar | 380 | 175 | 2.17 |
| Apr | 370 | 190 | 1.95 |
| May | 360 | 205 | 1.76 |
| Jun | 350 | 225 | 1.56 |
Required Data Columns
CACMonthly ARPUGross Margin %