Glossary
ACOS (Advertising Cost of Sale)
ACOS is the percentage of ad-attributed sales spent on Amazon advertising. It is calculated as ad spend divided by ad sales, times 100.
For example, spending $20 on ads that drive $100 in sales gives an ACOS of 20%. A lower ACOS means each ad dollar brings in more sales. The right target depends on your margins.
Learn more in our Amazon Ads guides.
Related terms
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