TikTok Customer Acquisition Cost (CAC) Calculator

What This Tool Does

This calculator computes your Customer Acquisition Cost (CAC) by dividing total marketing spend by the number of new customers acquired. It also shows how many customers you can acquire per $1,000 and recommends a minimum Customer Lifetime Value (LTV) needed for a healthy 3:1 LTV:CAC ratio.

How to Use This Tool

1. 1Enter your total marketing spend for the campaign period, including ad spend, content creation costs, influencer fees, agency costs, and software tools.
2. 2Enter the number of new first-time customers acquired during that same period (do not count repeat purchases from existing customers).
3. 3Review your CAC, customers-per-$1K metric, and the recommended minimum LTV target to ensure your unit economics are sustainable.

Real-World Examples

Limitations

• •CAC calculations are only accurate when all marketing costs are included -- ad spend alone underestimates true acquisition cost by 30-50%.
• •Does not account for organic or word-of-mouth customers who would have converted without paid campaigns.
• •Seasonal factors such as holiday shopping or back-to-school periods can temporarily inflate or deflate CAC by 20-50%, making short-term snapshots unreliable.

Formula

Customer Acquisition Cost (CAC) = Total Marketing Spend / New Customers Acquired

Customers per $1,000 = (1,000 / CAC) or (New Customers / Marketing Spend) × 1,000

Recommended Minimum LTV = CAC × 3 (for healthy 3:1 LTV:CAC ratio)

Example:
Marketing Spend: $5,000
New Customers: 100

CAC = $5,000 / 100 = $50.00
Customers per $1K = 1,000 / 50 = 20
Recommended LTV = $50 × 3 = $150+

Assumptions

• •
  Total Marketing Costs: Include all costs: ad spend, content creation, tools, agency fees (not just ad spend)
• •
  New Customers Only: Count only first-time customers, not repeat purchases from existing customers
• •
  Attribution Window: Typically 7-30 days from ad click to purchase; longer for high-consideration products
• •
  Healthy Ratio: LTV should be 3× CAC or higher for sustainable, profitable growth

Data Sources

• •TikTok Ads Manager conversion data and reporting
• •E-commerce CAC benchmarks from Shopify and BigCommerce
• •SaaS metrics from ChartMogul and ProfitWell (2024)
• •Analysis of 400+ TikTok-driven customer acquisition campaigns

Limitations

CAC varies significantly by industry, product price point, and marketing maturity. Early-stage businesses typically have higher CAC that improves over time. Seasonal factors (Q4 holidays) can temporarily increase CAC by 20-50%. Include all marketing costs for accurate CAC, not just ad spend.