Gross merchandise volume describes aggregate transaction activity on a platform—in most venture conversations it means the same dollar total as gross merchandise value (GMV), though some companies use volume for unit counts.

How it works

In dollar terms, gross merchandise volume equals the sum of order totals processed in a period—identical to GMV when defined that way. Payment companies may report payment volume; ride-hail and delivery apps report trip or order volume in currency. Occasionally “volume” means items sold or trips completed without dollar weighting—rare in investor decks but possible in ops dashboards. Always specify currency, gross versus net of cancellations, and whether taxes and shipping are included. Year-over-year volume growth pairs with active buyer and seller counts to show marketplace health beyond headline totals.

Why it matters

• Founders: Align finance, marketing, and investor reporting on one definition—mixed GMV/volume language causes diligence friction.
• Investors: Ask whether volume is dollar GMV or unit count before benchmarking against public comps like e-commerce marketplaces.

Common mistake

Switching between dollar GMV and unit volume in the same deck without labels—investors may model revenue incorrectly.

Related ideas

Gross merchandise value, GMV, active buyer metrics, and take rate.