Formula
RC CM4 % = ( RC CM2 − RC Marketing, Agency Fees, Opex, and Other order fees − Total Ad Spend ) ÷ RC Net Revenue × 100
Formula Components
How It Works
Returning orders are every order from a Shopify customer except their earliest non-cancelled order in Upstack. Upstack takes the margin on those orders, subtracts per-order fees on them, then subtracts your total ad spend, the same amount it subtracts for NC CM4 %. Recurring expenses and Variable costs are not part of this rate. They reduce dollar RC CM4 only, by the returning customer share.Example
RC CM4 % (11.4%) is below the store’s CM4 % (19.9%) even though returning customers are the profitable segment. Each segment carries the full $62,000 of ad spend; the store total carries it once.
How to Interpret It
Read RC CM4 % as “what margin would repeat orders leave if they paid for all advertising?” If it’s positive, your returning customer base alone could fund your ad budget. That’s a strong position: acquisition becomes an investment funded by retention.- Rising with steady ad spend means returning revenue or margin is growing.
- Falling with steady RC CM2 % means ad spend is growing faster than repeat revenue.
- Versus NC CM4 %, both subtract the same spend, so the gap mostly reflects how much bigger and more profitable the returning revenue base is.
Common Pitfalls
- Assuming repeat orders carry no ad cost. In Upstack they carry all of it. Retargeting and prospecting spend both count.
- Not reconciling with RC CM4 ÷ RC net revenue when recurring expenses or variable costs are configured.
- Segment rates don’t average to the store rate. Because ad spend appears in each, NC CM4 % and RC CM4 % can both be below CM4 %.
FAQ
Why is my returning customer operating margin lower than my total operating margin?
Why is my returning customer operating margin lower than my total operating margin?
The total counts ad spend once against all revenue. RC CM4 % counts all of it against repeat revenue only, as in the example above.
What should I compare RC CM4 % against?
What should I compare RC CM4 % against?
Its own trend and RC CM2 %. The gap between them is ad spend plus per-order fees as a share of repeat revenue.
Related Metrics
See all Contribution Margin metrics →