Amazon TACoS Explained: What It Is and How to Improve It (2026)

Most Amazon sellers track ACoS — Advertising Cost of Sale — as their primary PPC metric. ACoS tells you how much you spent on ads relative to the revenue those ads directly generated. It is useful. But it is incomplete.

ACoS ignores your organic sales entirely. If you are spending £500 per month on ads and generating £5,000 in total revenue (of which £2,000 is organic), your ACoS appears to be 25% on £2,000 of ad-attributed revenue. But your TACoS tells the fuller story: you spent £500 to generate £5,000 total, so your TACoS is 10%. That is a fundamentally different picture of your business efficiency.

What Is Amazon TACoS?

TACoS stands for Total Advertising Cost of Sale. Unlike ACoS, which measures PPC efficiency in isolation, TACoS measures the impact of your advertising spend on your total business revenue. It is the metric that tells you whether your ads are actually growing your business or just churning sales volume at a cost.

TACoS vs ACoS: The Key Difference

Here is a simple worked example:

The ACoS of 20% looks reasonable. The TACoS of 7.5% tells you that advertising only represents 7.5% of total revenue — the product has healthy organic traction and the ads are working as a complement to organic sales, not propping them up.

What Is a Good TACoS? Benchmarks by Stage

There is no universal “good” TACoS. The right number depends entirely on where your product is in its lifecycle:

Why TACoS Matters More Than ACoS for Business Health

ACoS is a tactical metric — it tells you whether a specific campaign or keyword is profitable. TACoS is a strategic metric — it tells you whether your entire advertising investment is building a sustainable business.

Two scenarios that illustrate why this matters:

• Scenario A: ACoS 15%, TACoS 14%. You are spending heavily on ads and generating almost no organic sales. Your ads are not building organic rank. You have an advertising-dependent business — if you cut spend tomorrow, almost all revenue disappears.
• Scenario B: ACoS 28%, TACoS 6%. Your ACoS looks high, but TACoS is excellent. The ads are generating sales velocity that has built strong organic rank. Organic sales are 4–5x your ad-attributed sales. If you reduced ad spend, most revenue would remain.

Scenario B is the goal. Scenario A is the trap many sellers fall into — optimising ACoS so aggressively that they never build organic momentum.

7 Ways to Improve Your TACoS

1. Improve Listing Conversion Rate

Every £ of ad spend drives more total revenue when your conversion rate is higher. Better images, A+ Content, more reviews, competitive pricing — all lift conversion, which means more revenue per pound spent. TACoS falls automatically.

2. Accelerate Review Velocity

Reviews improve organic conversion rate. Higher conversion rate signals to Amazon’s algorithm that your product deserves better organic rank. Better organic rank = more organic revenue = lower TACoS, even if ad spend is unchanged.

3. Eliminate Wasted Ad Spend with Negative Keywords

Add irrelevant search terms as negative keywords across all campaigns. Wasted spend on non-converting terms inflates your TACoS directly. A systematic negative keyword review — weekly for new campaigns, monthly for mature ones — removes spend that generates clicks but not sales.

4. Move Budget to High-Converting Keywords

In your Search Term Reports, identify terms with high sales volume and low ACoS. Increase bids on these. Simultaneously reduce or pause bids on terms with spend but zero conversions. Concentrating budget where it works most efficiently improves both ACoS and TACoS.

5. Reduce Bids on Branded Terms (Once Established)

Branded keyword traffic (searches including your brand name) typically converts very well — but people searching your brand name were going to find you anyway. Reducing bids on branded terms reduces ad spend on sales that were largely organic, improving TACoS.

6. Scale Organic Traffic Off-Amazon

Under A10 weighting, external traffic carries extra ranking weight. Driving organic traffic from social, email, or influencer channels to your Amazon listing builds rank without any ad spend. More organic revenue → lower TACoS without reducing ad spend.

7. Use Dayparting to Reduce Off-Peak Spend

Many products have peak purchasing hours. Running ads 24/7 wastes budget on hours with lower conversion rates. Use bid adjustment schedules or dayparting tools (Perpetua, Skai) to concentrate spend during your peak hours.

How to Calculate Your TACoS in Seller Central

1. Go to Seller Central → Reports → Business Reports → Sales & Traffic by ASIN
2. Note your Ordered Product Sales for the period (total revenue, organic + PPC)
3. Go to Advertising → Campaign Manager → Sponsored Products → Reports
4. Download your spend for the same period
5. Divide total spend by total revenue and multiply by 100

Alternatively, third-party tools like Helium 10 Adtomic, Perpetua, Skai, and Pacvue can calculate and track TACoS automatically, often with ASIN-level granularity and trend charts.