Financial Planning
GMV, Payment Volume and Revenue: Avoid the Gross-Net Trap
Map the money in a marketplace transaction, define the take-rate denominator and avoid calling all payment volume company revenue.
What you will learn
- draw the transaction money flow
- calculate a take rate on a defined volume base
- separate metric design from accounting gross-versus-net treatment
GMV measures the value transacted through a marketplace under a stated policy. Payment volume measures payments handled under its own definition. Revenue is what the company recognizes for what it provides. A marketplace can move $100,000 through its system without earning $100,000. Start by separating the seller’s share, platform fees, refunds and other flows.
Name what each number counts
a16z’s metric guidance distinguishes GMV from revenue. Put the eligible event next to each metric: orders placed, paid transactions, completed service or another defined state. Record treatment of cancellations, refunds, tax and shipping.
| Measure | Definition required | Common confusion |
|---|---|---|
| GMV | Transaction value and eligible event | Including unpaid or canceled orders without disclosure |
| Payment volume | Payment rails, status and gross/net policy | Assuming every payment is an earned platform fee |
| Revenue | Applicable accounting policy and service provided | Treating seller proceeds as the platform’s revenue |
| Take rate | Chosen platform amount divided by matching transaction volume | Changing the numerator or denominator between periods |
Trace a fictional $100,000 flow
Fictional inputs: completed orders have $100,000 merchandise value before later refunds. The platform charges sellers 12%. Merchandise refunds are $10,000, and the corresponding platform fees are reversed proportionately. Tax and shipping are excluded from the example. This is an economic flow exercise, not a gross/net accounting conclusion.
| Flow | Before refunds | After refunds |
|---|---|---|
| Merchandise value | $100,000 | $90,000 |
| Illustrative platform fee | $12,000 | $10,800 |
| Seller share before other charges | $88,000 | $79,200 |
| Platform fee / merchandise value | 12% | 12% |
The seller share falls by $8,800, and the platform fee falls by $1,200, totaling the $10,000 refund. Reconcile both sides, not only the fee. Otherwise, a fee dashboard can tie out while the transaction flow is still wrong.
Choose one matching take-rate basis
Here, a post-refund fee divided by post-refund merchandise value is $10,800 / $90,000 = 12%. Dividing that same fee by the pre-refund $100,000 gives 10.8%, a different measure. Neither label should be hidden. A fee rate and an accounting revenue take rate can also differ if the recognized revenue definition includes other services.
Show separate streams for advertising, subscriptions, fulfillment or financing. Do not put unrelated revenue in the numerator and call the result a pure transaction commission rate.
Do not decide principal-versus-agent from cash flow
Handling the customer’s payment does not by itself establish that the whole transaction is the company’s revenue. The IFRS discussion of principal-versus-agent analysis focuses on the promised goods or services and control. Bring contracts, responsibilities and transaction evidence to the finance owner for the actual determination.
This lesson helps explain the money movement. The business-model guide covers how transaction fees relate to the broader model.
Copy the transaction reconciliation
Period, currency and eligible transaction event:
Order/transaction IDs and source system:
Gross eligible merchandise value:
Cancellations and refunds:
Net eligible merchandise value:
Tax/shipping treatment:
Platform fee and fee reversals:
Seller amount before other charges:
Other revenue streams, separately:
Take-rate numerator / matching denominator:
Payment volume definition:
Finance-reviewed revenue basis and open questions:Exercise: find the denominator mismatch
A marketplace reports $50,000 eligible gross orders, $5,000 refunds and $4,500 retained transaction fees. A slide calls the take rate 9%. What should the note say?
Answer: $4,500 / $50,000 is 9% on gross pre-refund orders. On the $45,000 post-refund base, the rate is 10%. Label which denominator is intended. The calculation alone does not establish the company’s accounting revenue.
Keep the investor explanation anchored to the flow
Check that seller amounts plus platform amounts reconcile to the relevant transaction base, each refund has a corresponding treatment, and payment volume is not added to GMV. Keep prior definitions visible when the policy changes.
Bring the approved flow worksheet into your Finta fundraising materials. Give Aurora the defined transaction and fee summary to help draft a clear explanation of the business model. Review the draft with the person responsible for the revenue policy before sharing it.
Finta Field Guide. By Finta Editorial Team. Sources checked November 14, 2026. Examples are original, fictional teaching exercises, not customer results, benchmarks or individualized financial, accounting, legal or tax advice.