Break-even ACoS Calculator
Calculate the maximum ad cost (ACoS) you can afford before you hit zero per unit — a guardrail for campaigns.
Note: results are not made indexable via URL parameters. Canonical: https://tools.snapsoft.de/en/tools/break-even-acos-rechner
Who is this for?
- PPC managers who need a hard upper limit for campaigns
- Sellers/marketers who want to derive ACoS targets from unit economics
- Teams that want to de-risk budget decisions with simple guardrails
Break-even ACoS: derive a campaign limit from unit economics
Break-even ACoS is the maximum ad cost share where you still break even per sale. It’s not a “target” — it’s a hard ceiling.
Enter price, costs and percentage fees. The tool runs locally in your browser (max 5 inputs) and returns KPI cards, a traffic light and 3 concrete next steps.
Calculator
Max 6 inputs, clear outputs. Everything runs locally in your browser.
Inputs
Advanced options
0€ is fine if you account for these costs elsewhere.
Result
How it works
First we compute contribution before ads: selling price minus costs minus percentage-based fees.
Break-even ACoS is then: (contribution before ads) / selling price. This is the maximum ad cost share where you break even per unit.
If contribution before ads is already ≤ 0, there is no meaningful break-even ACoS (your base pricing/costing is the issue).
Quick conclusion
- Break-even ACoS is the maximum ad cost share where you still break even per sale (per unit).
- Common mistake: setting ACoS targets without unit economics — which leads to “revenue without profit.”
- Next step: set limits below break-even (buffer for fixed costs/overhead) and improve price/costs/fees as levers.
Sources & notes
Disclaimer: assumptions, fees and policies can vary and change. Always verify critical values in official sources (marketplace, supplier, payment provider).
FAQ
Is break-even ACoS a target or a limit?
In practice it’s a limit. A target ACoS is usually below that to leave room for fixed costs/overhead.
Is this only for Amazon PPC or in general?
The principle applies anywhere ad spend is a share of revenue. The term ACoS is just commonly used in Amazon/PPC.
Why is the return rate missing?
For campaign guardrails, a simple and robust definition is often more useful. If returns matter a lot for you, also use the minimum-price calculator.
Do you store inputs?
No. Everything runs locally in your browser.
What if break-even ACoS is very low?
Then your unit economics are tight even before ads. Levers: price, purchase cost, shipping/handling, fees, or your product/channel mix.
Turn it into a repricing rule in SnapTrade
If you want to monitor ACoS guardrails automatically and connect them with pricing/inventory: SnapTrade is the right bridge.