Break-Even ROAS Calculator
The ROAS you need just to break even — and the target ROAS to hit a profit goal.
What Is Break-Even ROAS and Why It Matters
Break-even ROAS is the minimum return on ad spend at which a campaign stops losing money. It's the point where ad-driven revenue exactly covers both the ad spend and the cost of fulfilling the orders that spend generated — product cost, fees, shipping. Below it, every ad dollar erodes profit; above it, ads contribute margin. The formula is simply Break-even ROAS = 1 / Gross margin %, where margin means per-order contribution margin before ad spend.
It matters because the ROAS number in your ad dashboard is meaningless on its own. A 3.0 ROAS is excellent for a 55%-margin brand and a slow bleed for a 25%-margin one. Break-even ROAS converts platform reporting into a hard floor you can actually manage against — per campaign, per SKU, per channel.
The Formula, With a Worked Example
Say you sell a product at $80. COGS is $28, marketplace and payment fees are $12, shipping is $8. That leaves $32 of contribution per order — a 40% margin. Break-even ROAS = 1 / 0.40 = 2.5. Any campaign returning less than $2.50 per ad dollar is losing money on this product, whatever the dashboard's green numbers suggest.
To bake in a profit target, subtract your desired net margin from the contribution margin first: Target ROAS = 1 / (Margin % − Profit goal %). Same product with a 10% profit goal: 1 / (0.40 − 0.10) = 3.33. That's the number your bid strategy should actually chase — not 2.5, which only gets you to zero.
What's a Good Break-Even ROAS?
Lower is better: a low break-even ROAS means margin headroom, which lets you bid where thinner competitors can't. Because it's purely a function of margin structure, the bands map directly:
| Contribution margin | Break-even ROAS | Read |
|---|---|---|
| 60%+ | ≤ 1.67 | Strong — room to scale aggressively |
| 40–60% | 1.67–2.5 | Healthy for most DTC |
| 25–40% | 2.5–4.0 | Workable, but watch fees and shipping |
| Under 25% | 4.0+ | Fragile — fix margin before scaling spend |
Most DTC and marketplace sellers run 30–50% contribution margins, putting the typical break-even ROAS around 2.0–3.3 (directional 2026 medians, not targets). If yours sits above 4, paid acquisition will stay fragile until the underlying economics improve — run your per-order numbers through the ecommerce profit margin calculator before touching bids. For how this stacks up against SaaS-style efficiency metrics, see the benchmarks page.
Common Mistakes
- Using blended P&L gross margin instead of per-order contribution margin. Forgetting shipping, payment and marketplace fees inflates margin and understates your break-even ROAS — often by a full point.
- Confusing margin with markup. A 50% markup is only a 33% margin, which moves break-even ROAS from 2.0 to 3.0. Sanity-check the conversion with the margin vs markup calculator.
- Ignoring returns and refunds. A 10% return rate effectively cuts revenue per order; net it out of price before computing margin.
- Judging repeat-purchase products on first-order ROAS alone. If customers reorder, first-order break-even is conservative — that's really a CAC-versus-lifetime-value question, and it's fine to run prospecting slightly below break-even if the payback math holds.