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Break-even ROAS

Break-even ROAS is the advertising return threshold where the selected economic model breaks even.

Formula

1Contribution margin before advertising= Break-even ROAS

Example
25% margin: 1 ÷ 0.25 = ROAS 4

Simplified contribution-margin model. Include relevant variable costs before advertising; this is not a universal threshold.

How it works

In a simplified model using contribution margin before advertising, the threshold is 1 divided by that margin; real costs must be included correctly.

Example

Example: At an illustrative 25% margin, the simplified threshold is ROAS 4, not a universal business model.

Common mistakes

Do not use product margin alone when other variable costs are missing.

How can you check this in practice?

In a simplified model, calculate pre-advertising contribution margin as a share of revenue. At 25%, 1÷0.25 gives ROAS 4. Include relevant variable costs and returns; the model does not automatically allocate fixed costs or future customer value.

Distinctions and limitations

A break-even threshold and Target ROAS differ. The former is a business calculation with assumptions; the latter a bidding objective. Different product margins can require different evaluation.

Official sources

Editorial responsibility: Biser Bozhinov · PPC Specialist

Updated: 05/11/2026

For a correction or question: office@z-consult.bg