Independent guide

Ecommerce Due Diligence Checklist

Ecommerce diligence should rebuild the cash engine from unit economics upward rather than accepting revenue and gross margin at face value.

Updated September 14, 2026Educational research
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Revenue and contribution margin

Reconcile sales by channel, then subtract discounts, refunds, landed COGS, fulfillment, payment fees and variable acquisition cost. This shows whether growth produces cash or simply more activity.

Inventory

Age inventory, verify quantities, identify obsolete SKUs and confirm valuation method. Determine whether inventory is included in enterprise value, purchased separately or adjusted at closing.

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Suppliers and logistics

Review supplier concentration, lead times, quality history, deposits, shipping modes, customs exposure and backup options. Confirm that terms will continue with a new owner.

Marketing

Inspect spend and contribution by channel, creative fatigue, attribution assumptions, branded search and email performance. Separate repeat-customer economics from first-order acquisition economics.

Customers and returns

Review repeat rate, cohort behavior, refunds, chargebacks, support tickets and product-review trends. Customer satisfaction issues often appear before they fully reach the financial statements.

Accounts and transfer

Confirm transferability or continuity for storefronts, marketplaces, ad accounts, domains, payment processors, email tools and supplier accounts.

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