Amazon Ads
What Is a Good Amazon ACOS?
There is no universal healthy ACOS for every Amazon product. A 20% ACOS can be profitable for one SKU and unprofitable for another. A 40% ACOS can be too high for a mature product but acceptable during launch if the campaign is learning keywords and building early conversion data.
The real question is whether actual ACOS is below your break-even ACOS for the product stage you are in. ACOS equals ad spend divided by ad-attributed sales. Break-even ACOS depends on your pre-ad profit margin.
Practical ACOS Ranges
- Below 15%: often efficient, but check whether the campaign is too conservative.
- 15%-30%: common for many mature products, depending on margin and category.
- 30%-50%: can happen during launch or in competitive niches, but needs a clear testing goal.
- Above 50%: high risk unless it is a deliberate short-term test, ranking push, or repeat-purchase model.
Launch Products and Mature Products Need Different Targets
Launch campaigns often carry learning cost. They test search terms, images, price, and conversion quality. Mature campaigns should be judged more strictly because sustained ACOS above break-even creates direct profit pressure.
Use the profit calculator to estimate break-even ACOS before deciding whether a campaign is healthy. Then use the keyword cleaner to separate high-intent Exact terms from discovery keywords.
FAQ
What is a good Amazon ACOS?
There is no universal number. A good ACOS is usually below your break-even ACOS for mature products, while launch campaigns may temporarily run higher for keyword learning and data collection.
Is lower ACOS always better?
Not always. Very low ACOS can mean the campaign is too conservative and missing growth. The right target depends on margin, inventory, rank goals, and cash flow.
Should I stop ads when launch ACOS is high?
Not automatically. Separate useful keyword learning from wasted spend. If traffic is relevant and shows clicks or add-to-carts, optimize the listing and bids before cutting everything.