A seller says her ACoS is 40 percent and she is worried. Another says his ACoS is 25 percent and he is happy. Yet she may be growing the business faster and earning more profit than he is. Which number tells the truth? Looking at TACoS vs ACoS together answers that question.
This guide explains both metrics, how to calculate them and how to use them to make better decisions on Amazon India.
Key Takeaways
- ACoS compares ad spend with sales that came from ads, while TACoS compares ad spend with total sales.
- ACoS shows how efficient your ads are, and TACoS shows how dependent your business is on ads.
- A falling TACoS with steady or rising sales is often a sign that organic sales are growing.
- Use both, together with profit, to judge performance.
ACoS and TACoS Defined
| Metric | Formula | What it measures |
|---|---|---|
| ACoS | Ad spend / ad-attributed sales x 100 | How efficiently ads turn spend into ad sales |
| TACoS | Ad spend / total sales x 100 | How much of your overall sales goes to advertising |
| ROAS | Ad sales / ad spend | Sales returned per rupee of ad spend |
A Worked Example
Suppose in a month you spend Rs 30,000 on ads. Your ads generate Rs 1,00,000 in sales, and your total sales, from ads and organic orders, are Rs 3,00,000.
- ACoS = 30,000 / 1,00,000 x 100 = 30 percent
- TACoS = 30,000 / 3,00,000 x 100 = 10 percent
- ROAS = 1,00,000 / 30,000, about 3.3
The ACoS says your ads cost 30 paise for every rupee of ad sales. The TACoS says advertising uses only 10 percent of your total revenue, because two thirds of your sales came without ad clicks.
Why TACoS Matters
- It shows the full effect of ads, including organic sales that ads help create
- It helps you see whether you are becoming less dependent on ads over time
- It reveals situations where a high ACoS is actually fine for the business
- It prevents you from cutting ads that quietly support organic ranking
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How to Read ACoS and TACoS Together
| What you see | What it may mean | What to do |
|---|---|---|
| ACoS high, TACoS falling | Ads are building rank and organic sales | Keep investing if profit is acceptable |
| ACoS low, TACoS rising | You may be under-advertising or organic sales are shrinking | Check ranking, stock and competitors |
| Both high | Ads are inefficient and the business is over-reliant on them | Fix the listing and cut wasted spend |
| Both low | Efficient ads and strong organic sales | Look for room to grow with more budget |
Which Metric Should You Track?
Track both. Use ACoS at campaign and keyword level to find waste and winners. Use TACoS at product and business level to see the overall health of your advertising. For decisions, anchor everything on profit, as explained in our guide to Amazon ACoS.
How to Improve TACoS Over Time
- Grow organic sales through better listings and reviews. See Amazon listing optimization
- Improve conversion so every visitor is worth more. See how to fix a low conversion rate on Amazon
- Cut wasted ad spend with negative keywords and tighter bids. See Amazon PPC keyword strategy
- Build repeat customers and a strong brand
- Avoid pulling ads suddenly, which can reduce visibility
Common Mistakes With TACoS and ACoS
- Judging success on ACoS alone
- Ignoring total sales when ACoS rises
- Comparing your numbers to other sellers with different margins
- Cutting ad spend and then losing organic rank
- Ignoring returns, fees and GST when judging profit
Metrics work best inside a clear plan. Read Amazon PPC for beginners, learn how to control spend in Amazon PPC bidding and budget and see how an Amazon account manager can track these numbers for you. Our Amazon management services support sellers with advertising and reporting.
TACoS and ACoS by Product Stage
| Stage | What to expect |
|---|---|
| Launch | ACoS and TACoS are high while you build reviews and rank |
| Growth | ACoS stabilises and TACoS starts to fall as organic sales rise |
| Mature | TACoS is low and steady, and ads protect share and rank |
A Simple Monthly Review
- Record ad spend, ad sales and total sales for each key product
- Calculate ACoS, TACoS and ROAS
- Compare with the previous month and the same month last year
- Note what changed in listings, price, stock and ads
- Decide two or three actions for next month
Why Total Sales Context Changes Decisions
Imagine two sellers with the same ACoS of 35 percent. The first has total sales of Rs 2,00,000 and spends Rs 40,000 on ads, so TACoS is 20 percent, and most of the business depends on ads. The second has total sales of Rs 5,00,000 with the same ad spend, so TACoS is 8 percent, and organic sales carry the business. The same ACoS leads to very different strategies: the first should work on organic strength and listing quality, while the second can afford to test more ads. Looking at both numbers prevents you from making the wrong call.
Frequently Asked Questions
What is TACoS on Amazon?
TACoS is total advertising cost of sales. It divides ad spend by total sales, including organic and ad sales.
What is the difference between ACoS and TACoS?
ACoS compares ad spend with ad-attributed sales, while TACoS compares ad spend with all sales.
What is a good TACoS?
It depends on your margins, category and growth stage. Many sellers aim for a TACoS that falls over time as organic sales grow.
Is a high ACoS always bad?
No. A high ACoS can be fine when advertising helps build rank and organic sales, as long as overall profit is healthy.
How do I calculate TACoS?
Divide your total ad spend by your total sales for the same period and multiply by 100.
Which metric is more important?
Both matter. ACoS shows ad efficiency, TACoS shows business health, and profit should guide your decisions.
Where can I find the data for these metrics?
Use advertising reports for ad spend and ad sales, and business reports for total sales.
Want advertising numbers that lead to better decisions?
Our team helps Amazon India sellers track, understand and improve ad performance.
