Channel Mix Optimization Using Contribution Margin

Shift budget toward channels with durable contribution margin, not just the highest revenue week.

Markdown source

Channel mix is a capital allocation problem. Treat each channel as an investment ranked by contribution margin and cash conversion speed, not by GMV bragging rights.

Treat channels as investments

Every channel competes for the same marginal dollar of budget, and deserves to be ranked by contribution margin and payback speed rather than by which one produced the biggest headline revenue number this month.

The reallocation test

Before shifting budget toward a "winning" channel, confirm its contribution margin actually holds at the higher spend level—scale frequently erodes efficiency as a channel reaches diminishing returns.

Building the review cadence

Rank channels monthly by contribution margin per dollar of spend, and require a specific reason to keep funding any channel that has fallen out of the top half of that ranking.

FAQ

Should new or test channels get an exemption from this ranking?

Yes, temporarily—budget them as a defined experiment with a set evaluation window rather than funding them indefinitely outside the normal ranking.

What if the highest-margin channel cannot scale further?

Fund it fully first, then move to the next-best channel by contribution margin—resist forcing more scale where efficiency is already degrading.

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CostRadar ranks channels by contribution margin automatically, so budget reallocation decisions start from profit, not from last week's revenue chart.