TACoS (Total ACoS)
Last updated: March 17, 2026
TACoS defined: The Total Advertising Cost of Sales
TACoS stands for Total Advertising Cost of Sales (also called Total ACoS). This metric shows the ratio between your advertising spend and your total revenue – that is, both ad-driven revenue and organic revenue.
Unlike the classic ACoS, which only looks at ad revenue, TACoS gives you a holistic view of advertising efficiency. It shows what percentage of your total revenue is spent on advertising, making it one of the most important KPIs for Amazon sellers.
Table of contents
The TACoS formula: How to calculate the metric
Calculating TACoS is simple and transparent. You divide your total advertising spend by your total revenue and multiply by 100:
TACoS = (Ad spend / Total revenue) × 100
Calculation example:
- Monthly ad spend: €2,500
- Total revenue (ads + organic): €25,000
- TACoS: (€2,500 / €25,000) × 100 = 10%
This means: 10% of your total revenue is spent on advertising.
TACoS vs. ACoS: The decisive difference
The difference between TACoS and ACoS lies in the denominator of the formula:
ACoS (Advertising Cost of Sales)
Ad spend / Ad revenue × 100
Measures only the efficiency of paid sales
TACoS (Total ACoS)
Ad spend / Total revenue × 100
Measures advertising's share of the entire business
Why is TACoS more meaningful? ACoS can be deceptive: even with a high ACoS, your business can be profitable if the advertising simultaneously drives organic revenue. TACoS shows the full picture and accounts for the “flywheel effect” – that is, how advertising leads to better rankings and more organic sales.
Interpreting TACoS correctly
TACoS is a dynamic value, and its development over time says more than a single snapshot:
Falling TACoS
A positive signal: organic revenue is growing faster than ad spend. The advertising is having a lasting effect on your ranking.
Stable TACoS with growing revenue
Healthy growth: advertising and organic sales are growing proportionally. The business model is scaling.
Rising TACoS
A warning sign: dependence on advertising is increasing. Possible causes: a shrinking organic share, inefficient campaigns, or intensified competition.
Benchmarks for a good TACoS:
- 5-10%: Excellent – low advertising share, strong organic revenue
- 10-15%: Good – a healthy ratio for most categories
- 15-20%: Acceptable – typical for new products or highly competitive markets
- > 20%: Critical – high advertising dependence, optimization needed
Optimizing TACoS: Strategies for greater efficiency
Optimizing TACoS requires a holistic approach that accounts for both advertising and organic growth:
- Strengthen organic visibility: Optimize your listings with relevant keywords, high-quality A+ Content, and persuasive product images
- Build up reviews: More positive reviews improve the conversion rate and therefore both organic and paid sales
- Optimize your campaign structure: Use the Search Term Report to identify high-performing keywords and allocate budgets accordingly
- Deploy negative keywords: Eliminate irrelevant traffic to spend your ad budget more efficiently
- Account for seasonality: Adjust ad budgets to demand cycles and use organically strong phases to reduce spend
Frequently asked questions (FAQ)
Where do I find TACoS in the Amazon Advertising Console?
TACoS is currently not displayed directly in the Amazon Advertising Console. You have to calculate it manually by combining the ad spend from the campaign manager with the total revenue from your Business Reports. Tools like HORAiZON ONE calculate TACoS automatically.
Is a lower TACoS always better?
Not necessarily. A very low TACoS can mean you are leaving growth potential on the table. During product launches or in a growth phase, a higher TACoS is acceptable as long as total revenue is growing. The goal is a falling TACoS with rising revenue.
How often should I check my TACoS?
A weekly review makes sense for spotting trends. Daily fluctuations are normal and should not be overinterpreted. For strategic decisions, a monthly analysis with comparisons to the previous month and previous year is recommended.
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