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comrAD now gates spend on live availability across Blinkit, Zepto and Instamart.

Check your real RoAS
Millennial AI

Free tool

The RoAS you actually need

After cost of goods, commission, fulfilment and returns, not the round number someone set as a target three years ago.

%
%

Include RTO on COD orders — it is usually the larger half.

%

Break-even RoAS

2.64×

Below this you lose money

Target RoAS

3.59×

To hit 10% contribution


Gross contribution per shipped order
₹400
After spreading return losses
₹379
Contribution margin before ads
37.9%

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Optional — the result above is yours either way.

How this works

Break-even RoAS is your selling price divided by what an order contributes before advertising. Everything turns on getting that contribution figure right, which means including the costs that usually get left out.

The one most often missed is returns. A returned order pays fulfilment in both directions and recovers no revenue, so its cost has to be spread across the orders that stick. At a 20% return rate every four delivered orders are carrying a fifth that came back.

If the calculator tells you no RoAS makes the SKU profitable, that is a real answer rather than an error. It means the unit economics need fixing before any amount of media optimisation will help.

How we run Amazon on contribution margin

Want us to run this on your actual numbers?

Thirty minutes, no deck. We'll look at your accounts and tell you what we'd change.