Amazon Ads Break-Even Bid Calculator
Bids set by keyword conversion, not by average.
Break-even bid
$1.54
$1.05 to keep 15%
The bid depends on the keyword's conversion rate, not on the average — a keyword converting at 11% supports $1.54 while one converting at half that supports half as much. Bidding one figure across a campaign overpays for the weak terms and underpays for the strong ones.
How the Amazon Ads Break-Even Bid Calculator works
The right bid depends on the individual keyword's conversion rate, not the campaign average. A keyword converting at 15% supports a bid three times higher than one converting at 5% — bidding one figure across a campaign overpays for the weak terms and underpays for the strong.
Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price — check the platform's current fee schedule before you price a product against it. This is not tax or business advice.
Frequently asked questions
How do I calculate a break-even bid?
Contribution per unit times the keyword's conversion rate. At £13 contribution and 11% conversion, break-even is £1.43 per click.
Why does conversion rate belong in the bid?
Because a click is only worth what it converts at. Two keywords with identical CPCs have completely different values if one converts three times better.
Should I bid the break-even figure?
No — below it, by whatever margin you want to keep. Bidding at break-even means winning traffic that contributes nothing.
How do I get keyword-level conversion data?
The search term report. It is the single most useful report on Amazon advertising and the one most sellers look at least often.