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Figure Figure 1 Growth that compounds

The marketing efficiency ratio boundary card

A blended ratio is reviewable only when revenue, spend, period, and the question answered stay visible together.

A six-row metric card with columns for ID, boundary, revenue numerator, spend denominator, period, and result and limit. The rows compare net, gross, media-only, fully loaded, attributed, and changed-period definitions.IDStablerowidentifier.BOUNDARYName the revenue andspend boundaryrepresented by therow.REVENUE NUMERATORRevenue object usedin the numerator,with currency andamount.SPEND DENOMINATORMarketing-spendobject used in thedenominator, withcurrency and amount.PERIODThe samedeclared timewindow forrevenue andRESULT AND LIMITRatio and the question itcan or cannot answer.Six rows are deliberate: one baseline, three boundary variants, one ROAS-like comparison, and one changed-period row. Allamounts are synthetic.
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Reference & Evidence

Source: Author's synthetic MER boundary card grounded in Shopify (2026). Formula and scope are bounded practitioner evidence; rows and values are illustrative, not benchmarks or company data.

Each line is a claim from the register this journal publishes against, resolved from the register at build time.

  • C Shopify defines marketing efficiency ratio as a blended comparison of total revenue with total marketing spend, also called blended ROAS Shopify (2026), MER guide · SH26-C1
  • C Shopify presents MER as total revenue divided by total marketing spend, with a worked 200,000 divided by 50,000 example equaling 4 Shopify (2026), MER guide · SH26-C2
  • C Shopify says MER comparisons require consistent revenue and spend definitions and periods, and distinguishes total-marketing MER from campaign or channel ROAS Shopify (2026), MER guide · SH26-C3

Grades: A, verified against the printed page of the primary source · B, primary source, text layer only · C, authoritative secondary · D, reported.

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