Break-even ACoS is the ACoS at which an ad sale makes exactly zero profit. It equals your profit margin before advertising: selling price minus cost of goods and marketplace fees, divided by price. Enter those numbers for one product and the calculator returns its margin and break-even ACoS, the ceiling every target ACoS and bid should sit under.
Use your own numbers per unit. Referral fee is a percentage of the selling price; closing and shipping fees are fixed rupees per unit. Enter fees inclusive of GST for a margin that matches your settlement.
Worked example: a product sells for ₹999 and costs ₹400 to make and land. Suppose the referral fee for its category is 15% (₹150) and closing plus shipping comes to ₹100, so fees total ₹250. Profit before ads is 999 − 400 − 250 = ₹349, which is a 35% margin. Break-even ACoS is 35%: an ad sale at 35% ACoS spends ₹349 to earn ₹349. Break-even ROAS is 999 ÷ 349 = 2.86x.
The 15% and ₹100 above are placeholders. Amazon India's referral fee varies by category and price band, and closing and shipping fees depend on the fulfilment channel and weight, so read them from your own fee preview or settlement report. Blooprint's Amazon seller fee calculator on blooprint.in works through the fee schedule; this page only needs the totals.
Break-even is the ceiling, not the target. The target depends on what the product is for right now.
| Stage | Target ACoS | Why |
|---|---|---|
| Launch, first 4 to 8 weeks | At or above break-even | Buying reviews, rank and sales history; loss is an investment |
| Growing | Break-even minus 5 to 10 points | Profitable on ads while still pushing volume |
| Mature, strong organic rank | Well below break-even | Ads protect the position; most sales are organic |
| Clearance | Up to break-even | Any positive contribution beats holding stock |
The same product can move through all four stages, so revisit the target every quarter, and every time the price or fee changes.
Once each product has a break-even and a target, the job is checking every keyword against its campaign's target and moving bids accordingly. BlooprintAI lets you set a target ACoS per campaign or for the account, filter keywords that are above it, and change their bids in bulk with a log.
Why your profit margin before ads is the ACoS ceiling, with a worked ₹ example.
Learn more →Turn a target ACoS, a selling price and a conversion rate into the highest CPC bid that still makes money.
Learn more →Ad spend and ad sales in, ACoS and ROAS out. The first number every Amazon seller checks.
Learn more →Bulk campaign creation, bid and budget changes in bulk, and keyword analysis for Amazon India. ₹14,999 per month, 7-day free trial.
Learn more →The ACoS at which an ad-attributed sale makes zero profit. It equals your profit margin before advertising: (price − cost of goods − marketplace fees) ÷ price × 100. Above it, each ad sale loses money.
Use the fee preview in Seller Central or a recent settlement report. Referral fee is a percentage of the selling price and varies by category; closing and shipping fees are per unit. Add 18% GST to all of them.
Only during a launch or clearance. For a product you want to profit from, set the target below break-even so the ad sale itself contributes margin.
Yes, the margin logic is identical, but Flipkart reports ROI instead of ACoS. Break-even ROI is price ÷ profit before ads, so a 35% margin means break-even ROI of 2.86.
Paid ads will struggle to be profitable on that product alone. Either raise the price, lower cost, or advertise it only where it lifts organic sales or a higher-margin product in the same listing.
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