Calculate your ACOS, ROAS, TACoS & break-even ACOS instantly. Find out if your Amazon PPC campaigns are actually profitable.
Your ACOS is below your break-even ACOS.
ACOS = Ad Spend ÷ Ad Revenue. ROAS = Ad Revenue ÷ Ad Spend. TACoS = Ad Spend ÷ Total Revenue. Break-even ACOS = (Selling Price − Cost per Unit) ÷ Selling Price. Use the figures from the same date range in your Amazon Ads console and Seller Central.
Measures the efficiency of your ad campaigns in isolation. A 20% ACOS means you spend $20 on ads for every $100 in ad-attributed sales.
Good ACOS: 15–25% (varies by margin)
Measures ad spend as a percentage of your total revenue (organic + ads). This is the more important long-term metric because it shows how ads drive overall business growth.
Good TACoS: 8–12% for mature products
ACOS (Advertising Cost of Sales) is the share of your ad-attributed sales that you spend on Amazon ads. It is calculated as ad spend divided by ad revenue, times 100. If you spend $2,000 on Sponsored Products and those ads drive $10,000 in sales, your ACOS is 20%. Lower is more efficient.
Break-even ACOS is the highest ACOS you can run before ads start losing money. It equals your profit margin before ad costs: (selling price − total cost per unit) ÷ selling price. For a $1,000 product that costs $600 including COGS and Amazon fees, break-even ACOS is 40%. Below 40% your ads are profitable; above it they lose money.
A good ACOS is usually 15–25%, but it depends on your margin: any ACOS below your break-even ACOS is profitable. For TACoS, 8–12% is a healthy range for mature products. A falling TACoS over time means your ads are helping grow organic sales, while a rising TACoS means you are leaning more heavily on paid traffic.
ROAS (Return on Ad Spend) is the inverse of ACOS: ad revenue divided by ad spend. An ACOS of 25% equals a ROAS of 4.0x, meaning every $1 in ads brings back $4 in sales. To convert, divide 100 by your ACOS percentage.
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