Where to start
Marketplace revenue depends on successful market activity. Demand and supply must form an eligible match, and the interaction must survive to completion before a monetisation model and recognition rules apply. GMV or another volume measure sits inside this chain. It is neither revenue nor a measure of service cost.
Public filings show that similarly named measures use different windows, units, and inclusions. In the observed sample of seven companies, volume may include or exclude tax, shipping, refunds, subscriptions, and transaction types; take rate uses different numerators. Comparison therefore starts with definitions and reconciliation rather than a benchmark.
The working map separates four layers: completed activity, realised monetisation, reliability losses, and variable service cost. Each retains a source of truth, owner, version, and market guardrail. The map creates no alternative accounting system: external and management views must reconcile to Finance policy.
How to measure
- Fill rate — The share of eligible demand units for which available supply satisfies a pre-defined successful-outcome criterion within a specified window.
- Transaction completion rate — The share of confirmed interactions that reach a preregistered successful completion event within the defined fulfilment window.
- Cancellation rate — The share of confirmed interactions or transactions cancelled before a pre-defined successful-completion event within a stated window.
- Payment failure rate — The share of payment attempts on confirmed interactions that ended in a decline or technical failure and produced no successful capture within the attempt window.
- Refund rate — The share of completed transactions that were refunded in full or in part within a preregistered window.
- Buyer repeat rate — The share of eligible buyers with an initial qualified success in a baseline cohort who achieve at least one subsequent qualified success within the defined repeat window.
- Seller repeat rate — The share of eligible sellers with an initial qualified success in a baseline cohort who achieve at least one subsequent qualified success within the defined repeat window.
- Buyer retention — The share of a buyer cohort completing at least one transaction in each subsequent observation period, reported as a retention curve across periods rather than a single number.
- Seller retention — The share of a seller cohort that maintained available eligible supply or completed a transaction in each subsequent observation period, reported as a retention curve across periods.
- Unmet demand share — The share of eligible demand units that do not reach a pre-defined successful outcome before a stated observation window ends.
Research and publications
- Marketplace revenue architecture: from GMV to economic outcome — A framework connecting market activity, monetisation, execution reliability, and variable service cost without treating GMV as revenue.
- How public marketplaces define their own metrics — Fifteen metric definitions from the annual reports of seven public marketplaces: identical names describe different quantities.
Frequently asked
How does GMV differ from marketplace revenue?
GMV and related measures describe a documented transaction-volume base under company-specific rules. Revenue is recognised under the company's accounting policy. Rates, mix, incentives, refunds, tax, and other elements may sit between them; no universal bridge exists without definitions.
How should marketplace take rate be calculated?
Name the numerator and base first. Public companies use, for example, net revenues or segment revenue and different GMV definitions. Division is simple, but comparison is invalid until inclusions, period, and segment are aligned.
How can revenue rise while a marketplace deteriorates?
Short-term growth can come from price, mix, or a few dense micro-markets while others lose liquidity, completion, or retention. This is not automatic; test it through both-side guardrails and segment decomposition.
Which measures belong beside revenue?
At minimum: documented volume, realised monetisation with an explicit base, completion and major failure families, variable cost under an approved policy, and retention on both sides. Growth decisions also need unmet demand and exposure by micro-market.
Can marketplace economics be compared across companies?
Comparison is possible after definitions, business models, and accounting perimeter are normalised, but public data are often insufficient. When reconciliation is impossible, the correct result is a table of differences and no direct ranking rather than a false benchmark.
Strongest counterargument
An operating team only needs revenue, GMV, and take rate; extra layers blur accountability.
Response
The three measures can summarise performance but do not distinguish mechanisms. The same result can call for demand, availability, pricing, payment, fulfilment, or cost-to-serve work. The map does not require one dashboard with everything; it selects a short bridge for a decision and retains financial reconciliation. Accountability becomes clearer when each transition has an owner and source of truth.