2026 Amazon PPC ACoS Solver: Calculate campaign Advertising Cost of Sale (ACoS %), Cost Per Acquisition (CPA), Return on Ad Spend (ROAS), and determine the exact spend adjustment needed to hit your target profit margin goal.
PPC Ad Performance Inputs
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Target ACoS Budget Optimization Panel
Target: 25.0%Max Spend for 25% ACoS:$500.00At current $2000 ad revenue
Available Spend Cushion:+$0.00Ad spend is within target budget
Revenue Required at Current Spend:$2000.00Sales volume needed at $500 spend
Target CPA (Cost / Order):$10.00Max ad cost per unit sale
ACoS Performance OutputGood (≤ Target)
Campaign ACoS
25.0%
ROAS = 4.00x | CPA = $10.00
25.0%
ACoS %
$10.00
CPA / Unit
50.0 u
Units Sold
Gap to Target (25%)Under Target
+0.00%Campaign is meeting profitability goals!
Verify before you act
Fees vary by ASIN, category, package size and weight, and marketplace. Confirm exact 2026 rates on the official Amazon Seller Central Documentation before pricing or sourcing decisions. This tool is provided for seller planning purposes only.
ACoS vs Target Goal Comparison
Target: 25%Green bar indicates current ACoS is within target goal. Red indicates overspend.
Frequently Asked Questions — Amazon ACoS & PPC
Key facts regarding ACoS, ROAS, CPA, and target ad budget optimization
What is Amazon ACoS (Advertising Cost of Sale)?▼
ACoS (Advertising Cost of Sale) is a key metric used to measure the efficiency of your Amazon PPC ad campaigns. It is calculated as (Total Ad Spend ÷ Total Ad Revenue) × 100. A lower ACoS means your ads are more profitable.
What is a good target ACoS on Amazon?▼
A good target ACoS depends on your product's profit margin. To break even on ad spend, your target ACoS should equal your pre-ad profit margin %. For example, if your product has a 25% profit margin, an ACoS of 25% is break-even, and anything below 25% is profitable.
What is the difference between ACoS and ROAS?▼
ACoS and ROAS (Return on Ad Spend) are inverse metrics. ACoS measures spend as a percentage of revenue (Spend ÷ Revenue), while ROAS measures revenue generated per dollar spent (Revenue ÷ Spend). For example, a 25% ACoS equals a 4.0× ROAS.
What is CPA (Cost Per Acquisition) in Amazon PPC?▼
CPA (or Cost Per Order) is the amount of ad spend required to generate one unit sale. It is calculated as Total Ad Spend ÷ Units Sold (or ACoS % × Retail Selling Price).
How can I lower my Amazon ACoS?▼
To reduce ACoS, negate non-converting search terms, lower bids on high-ACoS keywords, optimize product listing images and title for higher conversion rates (CVR), and reallocate budget to top-performing exact match keywords.
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