Where can I find ROAS in Amazon Seller Central?

ROAS is reported directly in Amazon's Campaign Manager. Navigate to Advertising, then Campaign Manager in Seller Central. In the campaign list view, you can customise the columns to include ROAS alongside ACoS and other metrics. ROAS is also available at the ad group and keyword level when you drill down within individual campaigns. If ROAS is not visible in your column set, use the column selector to add it: it is listed under Performance Metrics in the column customisation panel.

Is ROAS the same on Amazon as on Google Ads?

The formula is the same: ROAS = Revenue / Ad Spend. However, the attribution model differs significantly. Google Ads allows multiple attribution windows and models including last-click, data-driven and time-decay. Amazon Sponsored Products default to a 7-day click attribution window: a sale is attributed to an ad if the customer clicked the ad and purchased within 7 days. This attribution difference means ROAS figures from Amazon and Google campaigns are not directly comparable, even if the underlying formula is identical.

Should I use ROAS or ACoS to manage my Amazon campaigns?

Both metrics measure the same advertising efficiency from opposite directions. Use whichever you find more intuitive for your workflow. ACoS is the more widely used convention in the Amazon seller community and in Seller Central's native reporting. ROAS is more familiar if you have a background in Google or Meta advertising. If you manage advertising across multiple platforms, ROAS may be more useful for cross-platform comparison. The key is consistency: pick one metric as your primary reference and stick with it so you can build meaningful historical benchmarks.

What is ROAS on Amazon Ads?

ROAS, Return on Ad Spend, is one of the two most commonly used metrics for measuring Amazon PPC efficiency, alongside ACoS. Where ACoS expresses advertising cost as a percentage of revenue, ROAS expresses revenue as a multiple of spend. The two metrics measure the same underlying relationship between ad spend and ad revenue, but from opposite directions. ROAS is the more familiar metric for sellers who have experience with other digital advertising platforms such as Google Ads or Meta Ads, while ACoS is specific to Amazon and the broader marketplace advertising ecosystem. The ROAS formula is: ROAS = Ad-Attributed Revenue / Ad Spend. Ad-attributed revenue is the total sales Amazon recorded as resulting from a click on one of your ads within the attribution window (7 days by default for Sponsored Products). Ad spend is the total amount billed for those clicks. If you spent £500 on Sponsored Products campaigns and those campaigns generated £2,500 in attributed sales, your ROAS is 5: for every £1 spent, £5 in revenue was returned. Amazon Advertising reports ROAS as a number, not a percentage. A ROAS of 5 is often described as 5x or 5:1 to make the ratio explicit. ROAS can also be expressed as a percentage (500% in the example above), though this convention is less common on Amazon than on other platforms. Amazon's Campaign Manager displays ROAS as a decimal ratio alongside ACoS and other metrics in campaign reporting, making it straightforward to monitor without manual calculation. ROAS and ACoS are mathematical inverses of each other. The conversion between them is simple: ROAS = 100 / ACoS and ACoS = 100 / ROAS (when ACoS is expressed as a percentage). An ACoS of 25% equals a ROAS of 4. An ACoS of 10% equals a ROAS of 10. An ACoS of 50% equals a ROAS of 2. Knowing this relationship means you can work fluidly between both metrics and benchmark your performance against sellers or agencies who report using either convention. The practical difference between the two is largely one of perspective and preference. ACoS is arguably more intuitive for margin management because it answers the question 'what percentage of my ad revenue am I spending on advertising?'. ROAS is more intuitive for budget planning because it answers the question 'how many times am I multiplying my ad spend through revenue?'. Neither is more accurate than the other: they convey identical information about campaign efficiency. ROAS measures advertising efficiency against ad-attributed revenue only. It does not account for organic sales, which means a listing with strong organic rankings will show a ROAS figure that understates the total return generated by its advertising investment. If your ads drove a keyword to page one organically, the organic sales generated by that ranking are not reflected in the ROAS figure for the campaign that drove the ranking gain. ROAS also tells you nothing about profitability unless you compare it to your break-even ROAS. A ROAS of 3 may be highly profitable for a product with a 40% margin and unprofitable for a product with a 25% margin. Always evaluate ROAS in the context of your specific product economics: calculate your break-even ROAS by dividing 1 by your net margin as a decimal (for a 33% margin, break-even ROAS is approximately 3). Any ROAS above break-even is profitable; any ROAS below it means advertising is consuming more than your margin can absorb.

ROAS on Amazon Ads measures how much revenue you earn for every pound or dollar spent on advertising. Learn how ROAS works and how it relates to ACoS.