XBKit·Amazon

ACoS & ROAS Calculator

Calculate ACoS, ROAS, and TACoS for your Amazon PPC campaigns. Instant results as you type.

Ad Performance
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Key Benchmarks (Amazon)

Good ACoS: 15–30% (lower is better)

Good ROAS: 3× – 8× (higher is better)

TACoS target: 5–15% of total revenue

Formula
ACoS=Ad Spend ÷ Ad Revenue × 100
  • Good ACoS15 – 30%
  • ROAS = Ad Revenue ÷ Ad Spend3× – 8×
  • Break-even ACoS= your margin %
  • TACoS = Ad Spend ÷ Total Revenue5 – 15% target

How to Use

  1. 1

    Enter your ad spend and attributed revenue

    Input total spend on Sponsored Products and the total ad-attributed sales from your campaign report in Seller Central.

  2. 2

    Add your selling price

    Enter the product selling price to calculate break-even ACoS — the maximum ACoS at which you make zero profit.

  3. 3

    Review ACoS and ROAS

    ACoS shows what percentage of revenue goes to ads. ROAS shows revenue earned per dollar spent. Both measure ad efficiency from different angles.

  4. 4

    Compare against your target

    If your ACoS is below your break-even ACoS, the campaign is profitable. Use results to decide whether to raise or lower bids.

Frequently Asked Questions

What is ACoS and what does it mean?

ACoS (Advertising Cost of Sales) is the percentage of attributed revenue spent on advertising. ACoS = Ad Spend ÷ Ad Revenue × 100. A 25% ACoS means you spent $25 in ads for every $100 in ad-attributed revenue.

What is a good ACoS on Amazon?

A 'good' ACoS depends on your profit margin. Your break-even ACoS equals your profit margin. If your margin is 30%, any ACoS below 30% is profitable. Most established products target 15–25% ACoS.

What's the difference between ACoS and TACoS?

ACoS measures ad spend against ad-attributed revenue only. TACoS (Total ACoS) measures ad spend against total store revenue including organic sales. TACoS gives a truer picture of how advertising affects your overall business.

What is ROAS and how does it differ from ACoS?

ROAS = Revenue ÷ Ad Spend. A ROAS of 4 means you earned $4 for every $1 in ads. It is the inverse of ACoS — higher ROAS is better, lower ACoS is better. They measure the same efficiency from opposite directions.

Related Tools

PPC Bid CalculatorROAS CalculatorFBA Profit Calculator