Main menu
Calculate your break-even ACOS instantly
and understand if your Amazon Ads campaigns are profitable
Free tool for KDP authors and self-publishers
Open the Calculator
✓ Break-even ACOS
✓ Advertising profitability
✓ Real advertising cost vs royalties
✓ Amazon Ads campaign performance
Book price: $14.99
Royalty per sale: $4.50
Break-even ACOS
4.50 ÷ 14.99 = 30%
If your ACOS is above 30%, your campaign is losing money.
Try the CalculatorUnderstanding your Amazon Ads break-even ACOS is essential if you want to run profitable advertising campaigns. Many KDP authors spend money on ads without knowing the maximum ACOS they can afford before losing money.
This calculator helps self-publishers estimate their real advertising profitability by comparing book royalties with advertising costs. By calculating your break-even point, you can determine whether your Amazon Ads campaigns are sustainable or if they are draining your profits.
If your campaign ACOS is higher than your break-even ACOS, your advertising strategy may need adjustments such as lowering bids, improving targeting, or optimizing your book pricing.
Explore all Amazon Ads calculators for KDP authors
Amazon Ads ACOS FAQ
What is break-
Break-
Why is break-
Understanding your break-
How do I calculate Amazon Ads ACOS?
ACOS is calculated by dividing ad spend by sales revenue and multiplying by 100.
What is a good ACOS for Amazon Ads?
A good ACOS depends on your goals. If your ACOS is below your break-
How do KDP authors calculate profitable Amazon Ads campaigns?
KDP authors calculate profitability by comparing advertising costs with book royalties. If the advertising cost per sale is lower than the royalty earned, the campaign is profitable.
Why do many Amazon Ads campaigns lose money?
Many campaigns lose money because advertisers do not know their break-