break-even · profitability threshold
The break-even point is where revenue exactly covers costs: below it you lose money, above it you make some. In advertising, it translates into a minimum ROAS or a maximum CPL not to exceed.
The formula
Break-even ROAS = 1 ÷ gross margin
A concrete example
Example
With a 35% gross margin, your break-even ROAS is 1 ÷ 0.35 ≈ 2.9. A campaign at ROAS 2.5 looks decent but loses money; you need to clear 2.9 to be profitable.
Why it matters
It is the boundary that transforms decision-making: without a written threshold, campaigns get judged on impressions ("it seems to perform well"); with one, every channel compares to an objective number. It is the first calculation to run before spending on ads.
Frequently asked questions
- How do I calculate my maximum CPL?
- Max CPL = customer value × gross margin × closing rate. A $1,800 customer, 35% margin and one lead in four signed give 1,800 × 0.35 × 0.25 = $157.50. Above that, every lead destroys value.
- Is the threshold the same for all my channels?
- The formula is, but the result varies if your channels bring different customers: a channel that brings bigger orders or more loyal clients supports a higher CPL. Calculate one threshold per channel as soon as your data allows it.