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The Complete Due Diligence Checklist for Buying a Business

December 10, 202510 min read

Why Due Diligence Matters

Due diligence is your opportunity to verify everything the seller has told you. It protects you from surprises, validates your valuation, and gives you leverage to renegotiate if issues surface.

Financial Due Diligence

  • Verify revenue and expense trends over 3+ years
  • Reconcile P&Ls with tax returns
  • Validate add-backs with documentation
  • Review accounts receivable aging and bad debt
  • Analyze working capital requirements

Operational Due Diligence

  • Assess customer concentration and retention rates
  • Review key employee roles and compensation
  • Evaluate supplier relationships and contracts
  • Inspect equipment and technology infrastructure

Legal Due Diligence

  • Review all contracts, leases, and agreements
  • Check for pending or threatened litigation
  • Verify licenses, permits, and regulatory compliance
  • Review intellectual property ownership

Environmental and Regulatory

  • Assess any environmental liabilities
  • Review industry-specific regulatory requirements
  • Check zoning and land use compliance

The Bottom Line

A thorough due diligence process takes 30-60 days and requires coordination between you, your attorney, your CPA, and your broker. Do not rush it.

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