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Unit Economics: ROAS, CAC, and Lifetime Value Analysis
In digital marketing, Return on Ad Spend (ROAS) and Customer Acquisition Cost (CAC) are the definitive metrics determining whether an advertising campaign is scalable or burning cash.
Protecting your proprietary conversion rates and ad spend data is vital. This unit economics calculator executes completely client side, meaning your advertising metrics are never tracked, logged, or shared.
コアアーキテクチャ & 計算式
ROAS = ( Total Revenue from Ad Campaign / Total Cost of Ad Campaign ) × 100
A ROAS of 300 percent means you generate three dollars in revenue for every one dollar spent on advertising. To achieve profitability, your ROAS must exceed your profit margin break even point.
ベストプラクティスとガイドライン
- Focus on LTV to CAC Ratio: The golden rule of SaaS and ecommerce is maintaining an LTV to CAC ratio of 3 to 1 or higher. If you spend $50 to acquire a customer, they must generate at least $150 in lifetime gross margin.
- Segment Campaigns by Channel: Never blend your ROAS metrics. Calculate Google Ads, Meta Ads, and TikTok Ads separately to identify which specific platform yields the lowest CAC.
- Include Agency Fees in Ad Spend: True ROAS must factor in the retainer fees you pay to your marketing agency or freelancers, not just the raw platform spend.
よくある質問 (FAQ)
What is a good ROAS?
A 'good' ROAS is entirely dependent on your profit margins. If your product margin is 50 percent, you need a ROAS of at least 200 percent just to break even. Most ecommerce brands target a 300 percent to 400 percent ROAS.
How is CAC different from CPA?
Cost Per Action (CPA) tracks the cost of a specific conversion event (like an email signup or lead form), whereas Customer Acquisition Cost (CAC) measures the total sales and marketing cost required to acquire a paying customer.
Why is my ROAS dropping as I scale?
This is a natural phenomenon known as audience saturation. As you increase budget, the algorithm exhausts the highly qualified, cheap buyers and must bid higher for less relevant audiences.