What Is Break-Even ROAS?
Break-even ROAS is the minimum return on ad spend required for your ad campaigns to not lose money. It is not the same as your target ROAS or reported ROAS. It's the floor. Any ROAS below this number means you are paying to lose money.
Most sellers either don't know their break-even ROAS, or they use an oversimplified calculation that ignores 3–4 cost categories.
The Formula
Where:
Contribution Margin = Selling Price
− COGS
− Shipping
− Payment Processing Fee
− Pick & Pack
− Return Rate Cost
− App Fees (÷ monthly units)
The key insight: break-even ROAS is calculated before ad spend. You're finding out how much margin each unit contributes toward covering acquisition cost. Then dividing your price by that number gives you the ROAS you need to break even on that acquisition.
Worked Example
Product: Selling Price $55, COGS $13, Shipping $6, Payment Fee $1.90, Pick & Pack $2, Return Rate 8% ($4.40 avg cost), App Fees $0.60/unit.
− COGS: −$13.00
− Shipping: −$6.00
− Payment Fee: −$1.90
− Pick & Pack: −$2.00
− Return Rate Cost: −$4.40
− App Fees: −$0.60
──────────────────────────
Contribution Margin: $27.10
This means any ROAS above 2.03x on this product is profitable (before fixed overhead). Below 2.03x and you're losing money on every sale even if your ad manager shows a positive ROAS.
Break-Even ROAS by Margin Level
| Contribution Margin % | Example ($50 product) | Break-Even ROAS | Status |
|---|---|---|---|
| 50% | $25 margin | 2.0x | Room to scale |
| 40% | $20 margin | 2.5x | Healthy |
| 30% | $15 margin | 3.3x | Manageable |
| 20% | $10 margin | 5.0x | Difficult to achieve consistently |
| 15% | $7.50 margin | 6.7x | Likely unprofitable on paid ads |
Why Your Reported ROAS Lies
Meta's reported ROAS attributes revenue using a 7-day click, 1-day view attribution window by default. This means:
- Organic orders that happened to click an ad sometime in the last 7 days get credited to your campaign.
- Returning customers who would have bought anyway inflate your ROAS.
- Post-view conversions (people who saw but didn't click) can be credited to your ads under view-through attribution.
The fix: compare your blended ROAS (Total Revenue ÷ Total Ad Spend, from your Shopify dashboard) against your reported ROAS. The gap is your attribution inflation factor. Blended ROAS is almost always 20–40% lower than reported.
Setting Your Target ROAS
Break-even ROAS is the floor. Your target ROAS should be higher to account for:
- Fixed operating costs (staff, rent, software)
- A desired profit margin (e.g., 15–20% net)
- Inventory carrying costs
A common rule of thumb: Target ROAS = Break-Even ROAS × 1.25. If your break-even is 2.5x, target 3.1x+ before scaling spend aggressively.
Calculate Your Break-Even ROAS in Seconds
Enter your product costs and our calculator shows your break-even ROAS, contribution margin, and monthly profit estimate instantly.
The LTV Angle: When a "Bad" ROAS Is Actually Good
There's an important exception to everything above: customer lifetime value. If your product has strong repeat purchase rates — supplements, consumables, subscriptions, pet food — your break-even math on the first order can be less strict because you'll recoup CAC on orders 2, 3, and 4.
Example: If your first-order contribution margin is $15 and your break-even ROAS is 3.7x, you might struggle to scale. But if customers reorder 3x over 12 months at near-zero CAC, your true allowable CAC is $15 × 3 = $45 — meaning a break-even ROAS as low as 1.2x on the first order is acceptable.
Our LTV Strategy calculator tab models this exact scenario. Input your repeat purchase rate and see how it changes your allowable first-order acquisition cost.