Most sellers set advertising budgets by feel, then discover at the end of the quarter what it cost them. Target TACoS replaces that with a number you choose deliberately, per product, and manage toward.
The relationship that makes it work is unusually direct: one percentage point of TACoS is one percentage point of margin. Reduce TACoS from 21% to 18% and you have added three points of profit margin. Nothing else in advertising is that clean.
Prefer to watch? One hundred and eleven seconds on why the target belongs to the product rather than the account, what each lifecycle stage can afford, and how fast you can safely move it.
Set it per parent ASIN, not per account
An account-level TACoS target is an average of products at completely different stages, and averages hide exactly what you need to see. A mature product subsidising a launch looks identical to two mediocre products.
Set a target for each parent ASIN. That is the level at which the decision is real, because it is the level at which the product's stage, margin and competition are consistent.
The stage decides the number
A product's right TACoS changes as it matures, and expecting a launch to hit a mature product's number is the most common way people strangle a new listing.
| Stage | Target TACoS | Why |
|---|---|---|
| Launch | 25–50% | buying the velocity that creates rank and reviews |
| Growth | 15–25% | maintaining momentum while efficiency improves |
| Mature | 5–15% | organic sales carry the product; ads supplement |
The trajectory is the point. A product should be moving down this table over its life. If a two-year-old product is still at 30% TACoS, either it never achieved organic rank or something is wrong with the listing — and no bid change fixes either.
Working out your number
Start from gross margin before advertising. If a product clears 35% before ad spend, a 10% TACoS target leaves roughly 25%.
Then decide the profit margin you actually want, which again depends on stage:
Mature products: 17–23%. This is what a healthy, established product should return.
Growth phase: accept less, deliberately, to keep pushing.
New products: break even, or take a small planned loss. You are buying rank and reviews, and that is what it costs.
Competitive niches need higher TACoS, permanently. That is a fact about the category rather than a failure of management, and setting an unrealistically low target in a hard category just means you stop advertising and lose position.
Adjusting it: move slowly
You now have last month's actual TACoS and profit margin, and a target. The gap tells you which way to move.
If margin is below what you want
Lower TACoS gradually, a couple of points a month.
Last month: 21% TACoS, 14% margin. Set this month's target at 19–20%. Next month, 17–18%. Within two months margin is at 17%+ without anything breaking.
Do not drop from 20% to 15% in one month. Cutting spend that hard reduces sales velocity, which reduces organic rank, which reduces organic sales — so total revenue falls and TACoS may not improve at all. That is the flywheel running backwards, and it is much harder to restart than it was to stall.
If margin is above what you want
You are under-investing, and that is also a mistake — just a quieter one.
Last month: 27% margin at 7% TACoS. There is room to buy growth. Set 12–15% and put the difference into campaigns that convert.
A high margin with very low TACoS usually means a product is coasting on organic position that a competitor will eventually take.
Then manage to it
A target is only useful if something changes when you miss it.
Review monthly. TACoS is a slow metric — weekly readings are mostly noise and attribution.
When a product is above target, the weekly routines are the instrument: bleeders, bid reductions on high-ACoS targets, placement rebalancing. See Bid Optimisation: Six Rules.
When a product is below target, raise bids on targets that already convert well and on targets with almost no clicks — the cheapest available growth.
Where the number comes from
TACoS needs total sales, not just ad sales, which is why it cannot be read from the advertising console alone. Historically this meant exporting ad spend from one place, total revenue from another, and reconciling them per ASIN in a spreadsheet every month — which is why most sellers track TACoS at account level, if at all.
In TrackIQ it is already joined. Ad spend and total sales sit against the same products over the same date range, so TACoS per parent ASIN is a column rather than a monthly reconciliation exercise. See Understanding Business Reports for the total-sales side, and Understanding ROAS and Key Amazon Advertising Metrics for how the metrics relate.
Common mistakes
One target for the whole account. It hides every problem worth finding.
Cutting TACoS too fast, and stalling the flywheel.
Treating a competitive category's high TACoS as failure. Compare against the category, not against an ideal.
Never raising it. A product with high margin and very low TACoS is usually under-invested.
Reading TACoS weekly and reacting to attribution noise.
Related
- Amazon PPC: Core Terms and Metrics — ACoS, TACoS and how they differ.
- Profit Campaigns and Ranking Campaigns — ranking campaigns are meant to exceed target TACoS.
- What Amazon PPC Is Actually For — why profit rather than revenue is the measure.
- Designing the Offer — the margin the target assumes.
- What a Relaunch Is, and When to Run One — why a launch is allowed to exceed its target.
- When You Are Going Out of Stock — cutting spend deliberately when supply is short.