METHOD & GUIDANCE
How this calculation works
Enter figures from the same period and on a consistent sales tax-inclusive or sales tax-exclusive basis. Tool IQ recalculates every output immediately; nothing you enter is saved or sent to us.
How to use the result
Reconcile GMV to platform revenue, then subtract payment processing and operating costs before deciding whether volume or take-rate growth creates value.
Worked example
The opening case applies a 12% take rate to 475,000 GMV after refunds, producing 57,000 platform revenue before processing and operating costs.
Common mistakes
- Calling GMV company revenue.
- Applying the take rate before refunds inconsistently.
- Leaving seller incentives, fraud, support or payment cost out of contribution.
Frequently asked questions
Is this calculator free?
Yes. It requires no account and stores no calculation inputs.
Can I use the answer for a formal filing?
No. It is a planning estimate, not accounting, tax, legal or investment advice. Confirm material decisions with a qualified professional.
Should I include sales tax?
Use a consistent basis throughout. Businesses that recover input tax commonly model net figures; consumer-facing prices are often considered gross.
Continue the decision
- Average Order Value Calculator — Connect order value with margin, repeat buying and CAC.
- Contribution Margin Calculator — See how much each sale contributes to fixed costs.
Method reviewed 26 July 2026. Figures are illustrative and calculated locally in your browser.