Amazon US · AdvertisingStep 3 of 8

Break-even ACoS & CPC Calculator

Turn unit economics and conversion rate into practical advertising limits before you set a bid.

Output: ACoS, CPC, and PPC launch budgetNext: Inventory →

Advertising inputs

How much can each order support?

How the calculation works

Break-even ACoS = profit before ads ÷ selling price.

Break-even CPC = profit before ads × conversion rate.

Target values preserve the profit amount you choose.

How to read this result

Use this before setting bids or campaign budgets.

Step 6/8

Break-even ACoS is the ceiling, not the target. Target ACoS should leave the profit you want to keep.

Numbers to watch

  • • Break-even ACoS
  • • Target ACoS
  • • Break-even CPC
  • • Target CPC

What to do next

  1. 1.Do not use bids above the target CPC without a reason.
  2. 2.Improve conversion before raising bids.
  3. 3.Build a PPC launch budget next.
Continue: Build PPC launch budget →View full workflow

Break-even is not the target

Break-even ACoS uses all available profit before advertising. A target ACoS should leave room for the profit you want to keep.

Why conversion rate matters

The same profit per order supports a much lower CPC when conversion is weak. Improve listing conversion before trying to solve every problem by increasing bids.