Unit economics · 100% free
Contribution Margin 4 (CM4) Calculator
Calculate Contribution Margin 4, CM3 minus retention spend (loyalty, email/SMS, post-purchase ops).
D2C
CM4 (Fully-Loaded Per-Order Profit)
$-2.60
-3.3% of revenue
CM3 (for reference)
$1.40
Retention spend
$4.00
CM4 = CM3 − retention costs. The most defensible per-order economics. Positive CM4 = you're profitable even after accounting for loyalty, email, SMS, and post-purchase support.
About this tool
CM4 = CM3 − retention cost (loyalty rewards, email/SMS platforms, post-purchase support). The most-defensible per-order economics.
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