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We're growing, but margins are shrinking

By
Mukund Kabra

Margins shrink during growth when the cost of each new customer rises faster than what that customer is worth. Measure contribution margin by channel and cohort, then stop scaling the parts that lose money.

Category:
Measurement
Reading time:
2
min read
Published on:
October 24, 2026
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Measurement
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We're growing, but margins are shrinking

We're growing, but margins are shrinking

Problem

Revenue is up, but every month the business keeps less of it.

Spend has grown faster than the value it brings back. Discounts, fees and paid media eat into each order, and nobody can say which part of the growth is actually profitable.

So the team keeps pushing volume, and the margin keeps getting thinner.

Insight

Scale magnifies whatever was already inefficient.

What worked at small volume often stops paying back at large volume: the cheapest channels saturate, promotions become a habit, and repeat purchase does not keep pace.

Healthy companies measure profit at the level of the channel, the cohort and the order, not only the month, so they can tell good growth from expensive growth.

How we approach it

We find where margin leaks, then grow only what pays back.

  1. We calculate contribution margin by channel, campaign and customer cohort.
  2. We find the spend, discounts and segments that cost more than they return.
  3. We shift budget to profitable sources and build retention that raises the value of each customer.

The goal is growth you can keep funding without raising more money to pay for it.

Tags:  
LTV Optimization; Retention Growth; Upsell Systems; Monetization Strategy; Customer Segmentation; Value Ladder
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