ROAS & Break-even

Break-even ROAS Explained: What It Is and How to Calculate It

Break-even ROAS is the minimum return on ad spend where your campaign stops losing money after product costs — not the revenue number your ad platform shows by default.

Published 2026-07-16 by Ad Breakeven

What break-even ROAS means

ROAS (return on ad spend) is revenue divided by ad spend. Break-even ROAS is the ROAS where contribution margin equals ad spend — profit after product costs is zero. Any ROAS below that threshold means you lose money on each conversion, even when revenue looks healthy.

Key insight: Platform ROAS uses gross revenue. Break-even ROAS uses contribution margin. They are not the same number.

The break-even ROAS formula

First find contribution per conversion: value times gross margin percent, minus any fixed cost per order or per lead.

Contribution = (value × margin%) − fixed cost

Break-even ROAS = value ÷ contribution

With no fixed costs, this simplifies to 1 ÷ margin. Fifty percent margin means 2.0× break-even ROAS. Twenty-five percent margin means 4.0×.

Worked example (ecommerce)

AOV $90, gross margin 50%, shipping and fees $6 per order.

  1. Contribution = ($90 × 0.50) − $6 = $39
  2. Break-even ROAS = $90 ÷ $39 = 2.31×
  3. At 2.0× platform ROAS, the campaign loses money despite $180 revenue on $90 spend

Run your own numbers in the Break-even ROAS Calculator.

Lead gen: use expected revenue per lead

For lead gen, value is expected revenue per lead: customer or deal value multiplied by close rate. A $5,000 deal at 15% close rate has $750 expected value per lead. Apply the same formula to that value.

Conversion rate on the landing page does not change break-even ROAS — only margin and value per conversion matter.

Frequently asked questions

What is break-even ROAS?
Break-even ROAS is the minimum ROAS where ad spend equals contribution margin per conversion. Below it, campaigns lose money after product or fulfillment costs.
How do I calculate break-even ROAS?
Divide value (AOV or expected revenue per lead) by contribution per conversion. Contribution equals value times margin percent minus fixed costs.
Does conversion rate affect break-even ROAS?
No. Conversion rate affects max CPC and volume, but break-even ROAS depends only on margin and value per conversion.
Is break-even ROAS the same as target ROAS?
Break-even ROAS is your floor. Target ROAS in ad platforms should be at or above this number — often higher if you want profit, not just break-even.