Break-Even ACOS Calculator

The exact ad-spend ceiling per SKU. Includes COGS, Amazon fees, shipping. Below this number, your campaigns lose money on every click.

What your results will look like

Sample

5 SKUs, 3 verdicts. Currency follows your ₹/$ toggle below.

SKU	Price	COGS	Fees	Contribution	BE-ACOS	Verdict

healthy ≥ 20% · thin 10–20% · danger < 10% (structurally unprofitable)

Your SKUs

SKU ⓘ	Price ⓘ	COGS ⓘ	Amazon fee ⓘ	Shipping ⓘ

The math (open)

contribution = price − COGS − amazonFee − shipping
BE-ACOS (%) = contribution / price × 100

Verdict: healthy if BE-ACOS ≥ 20%, thin 10–20%, danger below 10%.

Results

Click Calculate to see Break-Even ACOS per SKU.

Common questions

What is Break-Even ACOS?

The ACOS at which net contribution = 0. Spending more on ads than this number means you lose money on every ad-driven sale, even before factoring returns.

Why doesn't Amazon's ad console show this?

Amazon's ad console shows ACOS (ad spend / ad revenue) but doesn't know your COGS, so it can't compute Break-Even ACOS. You have to give it the COGS and fee numbers yourself.

Does this include returns?

This calculator gives the gross BE-ACOS. For returns-adjusted BE-ACOS, multiply the result by (1 − returnRate − unsellableRate). The full SLM dashboard applies this automatically.