ACoS vs TACoS Target Metric Explained
ACoS vs TACoS Target Metric Explained
When configuring your advertising strategy, EVA requires selecting a target performance metric. This metric defines how the platform evaluates advertising efficiency and determines whether campaigns are performing according to the defined strategy.
The system provides two possible metrics:
- ACoS (Advertising Cost of Sales)
- TACoS (Total Advertising Cost of Sales)
Both metrics measure the relationship between advertising spend and revenue, but they evaluate performance from different perspectives.
Choosing the appropriate metric allows EVA to interpret campaign performance correctly when applying automated optimization.
ACoS (Advertising Cost of Sales)
ACoS measures the efficiency of advertising spend relative to the revenue generated directly from advertising.
The metric is calculated as:
ACoS = Ad Spend ÷ Ad Sales
This metric evaluates how much advertising cost is required to generate advertising-driven revenue.
For example:
- If $20 is spent on ads and those ads generate $100 in sales, the ACoS is 20%.
ACoS focuses specifically on the relationship between advertising investment and advertising-generated revenue. Because of this, it is commonly used when evaluating the direct efficiency of advertising campaigns.
TACoS (Total Advertising Cost of Sales)
TACoS evaluates advertising efficiency relative to total store revenue, including both advertising-driven sales and organic sales.
The metric is calculated as:
TACoS = Ad Spend ÷ Total Sales
This metric provides a broader view of how advertising contributes to overall business performance.
Unlike ACoS, TACoS helps reveal how dependent total store revenue is on advertising activity.
For example:
- If $20 is spent on advertising and the store generates $200 in total sales, the TACoS is 10%.
A lower TACoS generally indicates that organic sales are contributing significantly to total revenue.
When each metric is useful
Both metrics are valuable but serve slightly different analytical purposes.
ACoS is most useful when evaluating the efficiency of advertising campaigns themselves. It focuses specifically on advertising performance.
TACoS provides a broader business-level perspective. It helps determine whether advertising spend is driving sustainable growth or whether the store is overly dependent on advertising for revenue.
How EVA uses the selected metric
Once a metric is selected during strategy configuration, EVA uses that metric as the primary reference when evaluating campaign performance.
When campaigns exceed the defined target threshold, the system may apply optimization logic to bring performance back within the defined efficiency range.
Because this metric directly influences how advertising performance is evaluated, selecting the appropriate metric is an important part of configuring the advertising strategy.