FBAZone — Amazon seller tools

Target ACoS Calculator

ACoS to aim for given your pre-ad margin and the margin you want to keep.

PPC & advertising
%

Equals your break-even ACoS.

%
$
Free account required
Fill in the inputs and press Calculate. Results, a verdict and the formula trail appear here.

How the Target ACoS Calculator works

Target ACoS is the practical ceiling for your campaigns: the ACoS at which you still earn the profit margin you want after advertising.

Formula

  • Target ACoS = Margin before ads − Desired margin
  • Target ROAS = 100 ÷ Target ACoS

Example

36% − 15% = 21% target ACoS (about 4.8 ROAS).

Margin before ads %: 36Desired final margin %: 15

Frequently asked questions

Should launch ACoS be higher?

Usually yes. Many sellers accept break-even or slightly negative ACoS for the first weeks to gain ranking, then tighten to target.