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Break-even ACOS Calculator
Free break-even ACOS calculator. Enter your selling price, COGS and fees to find the ACOS at which Amazon PPC stops adding profit and starts losing money.
Costs (before ads)
$
$
$
$
Storage, inbound, prep, etc.
Results
Break-even ACOS
54.3%
Max profitable ACOS
Pre-ad Profit
$16.29
Pre-ad Margin
54.3%
Cost Breakdown
Selling Price$29.99
Referral fee− $4.50
FBA fulfillment− $3.50
Other fees− $1.20
Product cost− $4.50
Pre-ad Profit$16.29
Break-even ACOS equals your pre-ad profit margin. Keep your actual ACOS below this number and every ad sale adds profit.
How it works
1
Enter price & costs
Selling price, product cost, referral, FBA and other fees (no ad spend).
2
We find pre-ad profit
Your margin before advertising — the room you have to spend on PPC.
3
Read break-even ACOS
If your real ACOS is below this number, PPC adds profit. Above it, you lose money.
Frequently asked questions
What is break-even ACOS?
Break-even ACOS equals your pre-ad profit margin as a percentage of price. If your ACOS is below it, ads add profit; above it, ads lose money. It is the single most important PPC benchmark.