Due Diligence

Online Business Due Diligence Checklist

Due diligence tests the assumptions behind your valuation and purchase agreement.

Independent guideUpdated September 14, 2026
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In brief: Verify financial performance, demand, operations, ownership, technical assets, contracts and transferability before committing capital.

Financial

  • Reconcile revenue to bank, processor or platform records.
  • Rebuild normalized profit and challenge add-backs.
  • Review seasonality, refunds, chargebacks and working-capital needs.

Customers and demand

  • Measure concentration.
  • Review acquisition channels and retention.
  • Check whether recent growth depends on one campaign, platform or customer.

Operations

  • Map owner workload.
  • Identify employees, contractors and suppliers.
  • Document recurring processes and single points of failure.

Legal and ownership

  • Confirm entity and asset ownership.
  • Review material contracts and transfer restrictions.
  • Check intellectual-property ownership and outstanding disputes.

Technical and transfer

  • Inventory domains, hosting, repositories, software, analytics and accounts.
  • Review security, backups and technical debt.
  • Create a written transfer checklist before closing.