Due Diligence Guide · E-commerce

E-commerce Acquisition Due Diligence: What to Verify Before You Buy

A phase-by-phase framework for evaluating e-commerce businesses with $1M–$5M in revenue — covering traffic, inventory, platform risk, and supplier dependencies.

Find E-commerce Acquisition Targets

Acquiring an e-commerce business requires validating revenue sustainability, platform account health, and supply chain reliability. Unlike traditional businesses, e-commerce value can evaporate overnight from an Amazon suspension or paid ad channel collapse. This guide walks buyers through every critical verification step.

E-commerce Due Diligence Phases

01

Phase 1: Financial & Revenue Verification

Confirm that reported revenue and margins are accurate, sustainable, and not artificially inflated by one-time events or concentrated SKUs.

Verify 3-Year Channel-Level P&Lcritical

Request accrual-based P&L statements broken down by channel — Amazon, DTC website, wholesale — and reconcile against tax returns and bank statements for each year.

Analyze SKU and Customer Concentrationcritical

Identify what percentage of revenue comes from the top 3 SKUs and top 20% of customers. Heavy concentration in either signals fragile, high-risk revenue streams.

Normalize EBITDA and Add-Backsimportant

Review all owner add-backs including salary, personal expenses, and one-time costs. Confirm normalized EBITDA aligns with SBA lender expectations before valuing the business.

02

Phase 2: Platform, Traffic & Account Health

Assess the sustainability and transferability of the traffic and platform accounts driving revenue — the most e-commerce-specific and highest-risk due diligence area.

Audit Amazon Seller Account Healthcritical

Review account standing, review integrity, TOS compliance history, pending suspensions, and whether the account is transferable under Amazon's current policies without disruption.

Analyze Traffic Source Breakdowncritical

Export 24 months of Google Analytics or equivalent data. Identify the organic vs. paid vs. marketplace split and assess whether organic traffic is trending up, flat, or declining.

Evaluate Email and SMS List Qualityimportant

Assess list size, open rates, and revenue attribution from owned channels. Strong email and SMS performance signals low-cost customer retention and reduced paid ad dependency.

03

Phase 3: Inventory, Suppliers & Operations

Validate physical inventory accuracy, supplier contract terms, and whether the business can operate independently without the founder post-close.

Conduct Physical or Third-Party Inventory Auditcritical

Reconcile reported inventory value against actual stock on hand, including aged or slow-moving inventory. Confirm inventory is valued at cost and excluded from goodwill calculation.

Review Supplier Agreements and Lead Timesimportant

Obtain all supplier contracts and confirm exclusivity clauses, minimum order quantities, payment terms, and average lead times. Identify any single-source supplier dependency.

Assess SOPs and Virtual Team Structurestandard

Review documented standard operating procedures for fulfillment, customer service, and reordering. Confirm the business can run without the seller within 90 days post-close.

E-commerce-Specific Due Diligence Items

  • Verify Amazon account transferability and confirm no active or pending policy violations that could result in suspension post-acquisition
  • Request a full inventory aging report and confirm working capital requirements for seasonal restocking cycles before finalizing deal structure
  • Confirm trademark registrations, domain ownership, and brand asset assignments are clean and transferable as part of the closing checklist
  • Analyze customer lifetime value and repeat purchase rate by cohort to validate whether revenue is driven by loyal buyers or one-time paid traffic
  • Review paid advertising account history on Meta and Google to assess CAC trends, margin compression risk, and dependency on any single ad channel

Frequently Asked Questions

What's the biggest due diligence risk when buying an e-commerce business?

Platform dependency is the top risk. An Amazon account suspension or sudden ad cost spike can eliminate revenue overnight. Always verify account health, traffic diversification, and organic demand before closing.

How do I verify that an e-commerce business's revenue is real and sustainable?

Reconcile reported P&L against bank deposits, payment processor records like Stripe or PayPal, and marketplace settlement reports. Cross-reference at least 24 months of data across all channels to spot inconsistencies.

Can I use an SBA loan to buy an e-commerce business?

Yes. Most profitable e-commerce businesses with clean financials and 2–3 years of operating history are SBA 7(a) eligible, covering 80–90% of the purchase price with seller financing often filling the remaining gap.

How long does due diligence take for an e-commerce acquisition?

Typically 30–60 days. Financial and platform verification can move quickly with organized records, but inventory audits and supplier confirmation often extend timelines for product-heavy FBA or DTC businesses.

More E-commerce Guides

Find E-commerce businesses ready for acquisition

DealFlow OS surfaces targets with seller signals and motivation scores — so you know before you start diligence. Free to join.

Start finding deals — free

No credit card required