CAC Simulator
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By Growth TeamDec 29, 2025
The CAC Simulator helps you answer the most expensive question in your startup: "How much does it cost to buy a customer?"
Inputs
To get a precise calculation, Calanar pulls data from your connected Ad Accounts, but allows you to adjust the following variables manually:
- Marketing Spend: Total ad spend + Agency fees + Marketing salaries.
- Sales Spend: Sales team salaries + Commissions + Tools (CRM).
- New Customers: Total new paying logos acquired in the period.
Blended vs. Paid CAC
The simulator outputs two distinct metrics:
- Paid CAC: Total Ad Spend / Customers from Paid Channels.
- Use this to measure the performance of your Facebook/Google campaigns.
- Blended CAC: Total S&M Spend / Total New Customers.
- Use this to measure the overall health of your business (including viral/organic growth).
The LTV:CAC Ratio
Once your CAC is calculated, the simulator compares it to your LTV (Lifetime Value).
- 3:1 Ratio: The industry standard. You make $3 for every $1 spent.
- < 1:1 Ratio: You are losing money on every customer. Stop spending immediately.
- > 5:1 Ratio: You are under-spending. You can afford to be more aggressive to grow faster.
💡 Pro Tip
Payback Period: Toggle the view to "Time" to see how many months it takes to recover your CAC. Ideally, this should be < 12 months for SMBs and < 18 months for Enterprise.