Break-even for ecommerce ad campaigns: from theory to practice
Understanding break-even is one thing. Using it to make better budget and bidding decisions is another. Here is how to apply it to your ecommerce ad strategy.
Calculate my break-evenUsing break-even to set ROAS targets in Google and Meta
Your minimum profitable ROAS (= 1 ÷ margin) gives you the floor for tROAS bidding. Set your tROAS target meaningfully above this floor — at least 1.25x the minimum — to account for attribution inflation and ensure real profitability.
| Gross margin | Min. ROAS | Recommended tROAS (×1.4 buffer) |
|---|---|---|
| 25% | 4.0x | 5.6x |
| 30% | 3.33x | 4.67x |
| 40% | 2.5x | 3.5x |
| 50% | 2.0x | 2.8x |
Break-even for budget planning
Before setting a budget, ask: at our historical conversion rate and AOV, how many sales does $X budget need to generate for us to break even? This becomes your minimum performance bar.
Example budget check:
Budget: $1,000 · AOV: $65 · Margin: 38% · Contribution: $24.70
Break-even sales: 1,000 ÷ 24.70 = 41 sales
At historical 1.5% CR: need 41 ÷ 0.015 = 2,733 clicks
At $0.80 avg CPC: 2,733 × $0.80 = $2,186 needed for break-even
→ $1,000 budget is too low to break even. Need $2,200+ or improve CR/AOV.