ACOS
The percentage of attributed ad sales spent on advertising. Calculate it as ad spend ÷ attributed ad sales × 100. An ACOS of 25% means you spent €25 on ads for every €100 in sales attributed to those ads.
- Formula
- ACOS = ad spend ÷ attributed ad sales × 100
- Example
- €50 ad spend ÷ €200 attributed ad sales = 25% ACOS.
A lower ACOS is generally more efficient, but the right target depends on your royalty and goals.