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RC CM4 % is the share of repeat-order net revenue left after product, fulfillment, payment fees, per-order fees, and all of your ad spend. Upstack doesn’t exempt returning customers from ad cost.

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

The total counts ad spend once against all revenue. RC CM4 % counts all of it against repeat revenue only, as in the example above.
Its own trend and RC CM2 %. The gap between them is ad spend plus per-order fees as a share of repeat revenue.

See all Contribution Margin metrics →