6 min read
What Is Break-Even ROAS for Ecommerce? (Practical Definition)
Learn how to interpret break-even ROAS for paid traffic, how it ties to contribution margin, and how to use it with order-level profit models.
Published: 2026-04-24
What break-even ROAS means in practice
ROAS from ad platforms compares attributed revenue to ad spend. At the order level, break-even thinking should start from contribution: what you keep after variable costs before ads.
Our calculator shows a simplified minimum revenue ROAS guardrail based on selling price divided by contribution before ads. It is not a replacement for Meta, Google, or TikTok attribution.
When the guardrail is useful
Use it to sanity-check whether your current targets are even possible given your fee stack and COGS. If contribution before ads is negative, no ROAS target fixes the SKU.
- Refresh contribution weekly when fees or promos shift
- Pair with break-even CPA if you buy on a cost-per-order basis
- Compare branded vs prospecting campaigns separately when possible
Common mistakes
Mixing payout revenue with gross checkout revenue, or excluding refunds while counting full price, will distort both margin and ROAS comparisons.