Ad spend divided by ad-attributed sales on marketplaces.
Definition
Ad spend divided by ad-attributed sales on marketplaces.
Why it matters
It measures marketplace ad efficiency.
How it works
ACoS = ad spend ÷ ad sales × 100
Example
₹10,000 spend for ₹50,000 sales is 20%.
Common mistake
Ignoring organic impact.
Using it in practice
Review ACoS alongside related metrics rather than in isolation, and agree definitions across your team so reports stay consistent.
Need help putting this into practice?
Gravmo's team can plan and run this for you. See Amazon Store Setup and Marketing or message us on WhatsApp.
Ask on WhatsAppFrequently asked questions
Is ACoS the most important metric?
No single metric tells the whole story; use it with business outcomes.
How often should we review ACoS?
Monthly for most businesses, weekly during active campaigns.