What Is Considered a Good ACoS for Amazon Ads?
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Quick answer
A good ACoS for Amazon Ads is commonly considered to fall between 15% and 30%, although the right target depends on product margin, category competition, and campaign objective. A lower ACoS means more profit per ad-attributed sale, while a higher ACoS can support visibility and ranking when the unit economics allow it. Sellers with mature products often treat 15–25% as an efficiency range, whereas launch or growth campaigns may intentionally operate above 30% for a short time.
The 15–30% figure is a useful starting point, not a guarantee. A genuinely good ACoS is one that keeps ad spend below the point where a sale stops contributing to your margin. The sections below show how to align that number with the way your products actually perform.
How Product Margin and Campaign Goals Shape Your ACoS Target
ACoS is the portion of ad-attributed revenue spent on advertising. If a product carries a 40% pre-ad profit margin, an ACoS around 25% can still leave room for contribution profit. For a product with a 20% margin, that same 25% ACoS would likely make the sale unprofitable.
Use these rough operating bands as decision guides rather than fixed rules:
- Under 15%: typically a strong efficiency range, but it may mean the campaign is not winning enough valuable impressions.
- 15–25%: a common profitability-focused target for established products with stable conversion.
- 25–30%: workable when margins are healthy, competition is high, or you are trying to defend market position.
- Above 30%: often tied to launches, ranking pushes, or inventory clearance, and usually needs a time limit.
Reading ACoS Alongside ROAS in Your Reports
ACoS becomes more useful when you evaluate it next to ROAS and total ad-attributed sales. A campaign can have an acceptable ACoS while still hiding wasted spend in specific search terms or placements. Reviewing the detail is where most of the practical improvement happens.
A reporting view such as the Amazon Ads Dashboard by Todoza can help you see spend, sales, ROAS, and ACoS together. From there, you can drill into the terms that are raising your blended ACoS and decide whether to adjust bids, move budget, or add negatives.
When This Matters in Day-to-Day Ad Management
This matters when you set weekly budgets, evaluate a new product launch, or review whether an older campaign should keep running. If your ACoS is below your break-even ACoS, the campaign can scale. If it is above break-even, the campaign may still be useful for discoverability, but only if you have a clear reason and a review date.
Before making changes, confirm whether the ACoS issue is broad or tied to a few search terms. Removing unprofitable terms can lower the overall figure without losing the parts of the campaign that are actually working.
Related products
Related guides
Once you have a target ACoS range for your catalog, the next step is often working back through ROAS to see which products, campaigns, and search terms are driving the result. That process is closely tied to the broader ROAS-to-ACoS evaluation covered in the parent guide.