TACoS Calculator
Enter your revenue and advertising data for a selected time period (e.g., last 30 days).
💰 Revenue (for your chosen time period)
📣 Advertising Spend
🏭 Costs (Optional — for profitability view)
📈 Campaign Metrics (Optional)
What Is TACoS and Why Does It Matter?
Most Amazon sellers know about ACoS (Advertising Cost of Sales). Far fewer understand TACoS — and that lack of understanding leads to poor advertising decisions.
TACoS vs ACoS: The Key Difference
| Metric | Formula | What It Measures |
|---|---|---|
| ACoS | Ad Spend ÷ Ad Revenue × 100 | Advertising efficiency — cost to generate $1 of ad-attributed revenue |
| TACoS | Ad Spend ÷ Total Revenue × 100 | Overall business health — what % of all revenue goes to ads |
| ROAS | Ad Revenue ÷ Ad Spend | Return — how many dollars of ad revenue per $1 of ad spend |
Why TACoS matters more than ACoS alone: A seller with a 30% ACoS might look inefficient, but if their total revenue is $50,000 and ad spend is only $2,000, their TACoS is just 4% — meaning ads are barely affecting their total business profitability. Conversely, a seller with a 10% ACoS but 90% of revenue coming from ads has a TACoS of 9% — heavily ad-dependent and vulnerable.
TACoS Benchmarks for Amazon Sellers
| TACoS Range | Rating | Interpretation |
|---|---|---|
| 0–5% | Excellent | Strong organic sales base, ads are supplementary |
| 5–10% | Good | Healthy balance of organic and paid growth |
| 10–15% | Average | Normal for growing brands or new product launches |
| 15–25% | High | Heavy ad dependency — review campaign structure |
| 25%+ | Very High | Unsustainable — requires immediate optimization |
Context matters: These benchmarks are general guidelines. A new product launch may have a high TACoS temporarily while building organic rank — this can be intentional. An established product with high TACoS is more concerning.
TACoS Calculator FAQ
Total Revenue: Go to Seller Central → Reports → Business Reports → Sales and Traffic. Select your date range and look at "Ordered Product Sales." Ad Revenue (Attributed Sales): Go to Seller Central → Advertising → Campaign Manager. Select your date range and look at the "Sales" column in your campaign summary. This shows the revenue Amazon attributes to your ad clicks within the attribution window (usually 7 or 14 days).
Not necessarily. During a product launch phase, a high TACoS (even 20–40%) can be acceptable and strategic — you are investing in ranking and reviews. The goal is to watch your TACoS decrease over time as organic sales grow. For mature, established products, a lower TACoS indicates strong organic visibility and a healthier business. Think of TACoS trend over time, not just the current number in isolation.
ROAS (Return on Ad Spend) of 3x or higher is generally considered acceptable for Amazon PPC. This means for every $1 you spend on ads, you generate $3 in ad-attributed revenue. However, your target ROAS should be based on your product's profit margin. A product with 30% net margin needs a higher ROAS to remain profitable than a product with 50% margin. Use our profit calculators alongside this TACoS calculator to understand the full picture.
There is a direct relationship. When ads drive sales, those sales signal to Amazon's algorithm that your product is relevant and converting — which helps improve your organic search ranking. As organic rank improves, more customers find you without ads, increasing your organic revenue share and lowering your TACoS. This is why many sellers deliberately run ads at a higher TACoS in the short term to build organic rank for long-term profitability.