Amazon ACoS (Advertising Cost of Sale) is a metric that shows how much money you spent on advertising versus sales you received for a given product on Amazon. The formula for ACoS is 100 ( [total ad spend] ÷ [total sales] )

**2 Ways to get your Maximum ACoS**

As a rule of a thumb, there are several ways to determine what is your Maximum ACoS for a keyword:

- If you choose to be aggressive:
- Input your profit margin.
- If you choose to be conservative + 10% profit for each click, for each sale:
- You have to figure out your profit margin and do some subtraction to know what to input.

**Your scenarios:**

**Profit margin**

**Seller's intent**

**Maximum ACoS**

35%

10% profit

25%

35%

break-even

35%