The abbreviation CRR means Cost Revenue Ratio and describes the ratio between expenses and actual sales as a percentage and is used in for Google and Bing advertising.

The abbreviation ACoS means Advertising Cost of Sales and describes the ratio between expenditure and actual sales as a percentage and is used in the Amazon Advertising platform.

CRR is used when you know how much the maximum costs for advertising should be.

The smaller the CRR/ACoS value, the more economical and profitable the advertising campaign. The higher the CRR/ACoS value, the higher the proportion of the costs are in relation to the revenue.

For example when the CRR/ACoS is 25%, the costs are a quarter of the revenue.

## CRR/ACoS calculation

When calculating the CRR/ACoS, you should divide the costs in relation to the revenue.

``CRR/ACoS = Advertising costs / Shopping basket revenue``

Example:

Campaign A, generated €250 revenue and the advertising costs are €50. The CRR/ACoS in this case is 20% (50/250 = 20%)