15 Red Flags in Business Acquisitions
Financial inconsistencies, undisclosed litigation, customer concentration, key-person dependency, and other warning signs that experienced buyers never ignore.
Due diligence is where acquisitions succeed or fail. These 15 red flags are the warning signs that experienced buyers and M&A attorneys never ignore.

If any single customer represents more than 20% of revenue, losing that customer post-acquisition could devastate the business. Verify customer contracts for change-of-control provisions that could trigger termination.
Examine revenue trends over 3 to 5 years. One-time gains from asset sales, insurance settlements, or non-recurring projects can mask underlying revenue decline.
Review all pending and threatened litigation. Undisclosed claims discovered post-closing become buyer's problems in stock purchases. The U.S. Courts PACER system can reveal federal cases not disclosed by the seller.
If the business depends on one or two individuals whose departure would materially impact operations, that creates concentration risk. Evaluate whether key relationships and knowledge can transfer to the buyer.
Material contracts that allow counterparties to terminate upon ownership change can destroy the value you are paying for. Identify these provisions and negotiate consents or amendments pre-closing.
Unpaid payroll taxes, uncollected sales taxes, and unfiled returns create personal liability exposure. The IRS can pursue successor liability for unpaid employment taxes regardless of deal structure.
Properties with contamination history can create remediation obligations under CERCLA that transfer to new owners regardless of knowledge or fault.
Workers classified as independent contractors who should be employees create back-tax, benefits, and overtime exposure. See our Employment Agreements Guide.
Verify that the business actually owns the IP it claims. Work product created by contractors without proper assignment clauses may belong to the contractor, not the company.
Identify current compliance gaps and pending regulatory changes that could affect operations. Our Regulatory Compliance Audit methodology systematically identifies these risks.
For the complete diligence framework, see Due Diligence: The Foundation of Smart Decisions.
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Lee Clark
Licensed in Idaho and California. Arbitrator, Judge Pro Tem, mediator since 2008.

Conor Meyers
CEO/GC of ACE Building Envelope Design. CLO of ZEA Biosciences.