Free
Amazon
Break-Even ACOS Calculator
The highest ACOS a SKU can carry before the sale stops being worth making.
—Break-even ACOS
—Contribution per unit
—Margin before ads
How this is calculated
Break-even ACOS is your contribution margin expressed as a percentage of the net selling price:
contribution = price − cogs − referral − fees − returns − other break-even ACOS = contribution ÷ price
Above that ACOS, an additional advertised sale makes the year worse. Below it, it makes the year better.
What this simple version leaves out
- Per-SKU storage by ageing. A slow SKU pays storage repeatedly.
- Apportioned ad spend across SKUs. Campaign ACOS is not SKU ACOS.
- Reimbursement gaps. Lost and damaged inventory that was never claimed.
- GST on the fees themselves, unless you put it in "other costs".
- Live fee tables. You are typing the referral percentage; the full model
reads it from the current Amazon India schedule.
The Amazon Profitability AI tool inside SMEMinds Playbook runs all eleven cost layers per SKU in bulk, on live fee tables.
The full model
This is the simple version.
The full model runs every cost layer across your whole catalogue, on live fee tables, inside SMEMinds Playbook.