Due Diligence

Ecommerce Due Diligence Checklist

Gross sales can conceal weak contribution economics and working-capital risk.

Independent guideUpdated September 14, 2026
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In brief: Ecommerce diligence should verify margins, inventory, suppliers, acquisition channels, customer behavior, refunds and platform-account health.

Unit economics

  • Revenue by product and channel
  • Gross margin and contribution margin
  • Advertising spend and blended acquisition cost
  • Refunds, returns and chargebacks

Inventory

  • Inventory aging
  • Stockout history
  • Lead times
  • Obsolescence risk
  • Working capital required after closing

Suppliers

  • Supplier concentration
  • Written terms and pricing
  • Transferability of relationships
  • Quality-control issues and lead-time risk

Channels and customers

  • Marketplace versus owned-store mix
  • Paid versus organic acquisition
  • Repeat purchase and retention
  • Account-policy history

Transfer

Confirm how store access, marketplace accounts, domains, supplier relationships, inventory, customer systems, creative files and fulfillment arrangements will move.