Expert Witness: Accounting and Tax

Accounting and tax disputes require an expert who combines technical mastery, investigative skills, and the ability to communicate complex matters with clarity. At Dr. John McGowan LLC, we provide expert witness services in accounting and taxation that are rooted in more than three decades of professional practice, academic scholarship, and courtroom experience.

Forensic Accounting

Forensic accounting is one of the most active areas of our expert witness practice. As a Certified Public Accountant (CPA), a Certified Fraud Examiner (CFE), and a former Accounting Professor, Dr. McGowan brings rigorous training and investigative expertise to matters involving:

• Fraud detection and analysis: Identifying misappropriation of funds, financial irregularities, and fraudulent reporting.
• Financial restatements: Reviewing the accuracy and reliability of financial disclosures.
• Revenue recognition disputes: Evaluating whether revenues have been reported in compliance with GAAP and regulatory standards.
• Tracing and reconstruction: Rebuilding incomplete or manipulated financial records to present a clear financial picture.
• Corporate governance issues: Assessing whether accounting practices align with fiduciary duties and professional standards.

Our forensic accounting services are designed to support attorneys in building credible cases by producing analyses that are transparent, defensible, and persuasive under cross-examination.

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Tax Expertise

With more than 30 years of tax practice and teaching—including service as a Tax Manager at Ernst & Young, Director of Tax Strategies at Archford Accounting, and Professor of Taxation at Saint Louis University—Dr. McGowan offers unparalleled depth in tax-related disputes. Our tax expert witness services cover:

• • Corporate taxation: Including ASC 740 income tax provisions, deferred tax assets, loss carryforwards, and uncertain tax positions.
  • Partnership and pass-through entities: Allocation of income and losses, valuation of partnership interests, and compliance disputes.
  • Mergers, acquisitions, and reorganizations: Analyzing tax treatment in spin-offs, liquidations, and restructuring matters.
  • Estate and trust taxation: Expert opinions on fiduciary accounting, estate valuation, and tax planning disputes.
  • Tax controversies and litigation: Supporting counsel in disputes with the IRS or state taxing authorities, including rebuttal of opposing expert testimony.

Tax disputes often sit at the intersection of law, accounting, and economics. Our opinions are grounded in the Internal Revenue Code, Treasury Regulations, authoritative case law, and economic reasoning—ensuring they are both technically sound and readily comprehensible to judges and juries.

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Additional Areas of Accounting & Tax Expert Witness Practice

Beyond traditional forensic accounting and tax controversies, Dr. John McGowan LLC also provides expert analysis in:

• • CPA Standard of Care: Evaluating whether accountants and auditors met their professional responsibilities.
    
  • Business valuation and goodwill determination: Applying recognized valuation methodologies in shareholder disputes, mergers, and litigation involving intangible assets.
  • Piercing the corporate veil / alter ego analysis: Reviewing related-party financials to determine whether distinct corporate entities have been respected.
  • Pension and retirement issues: Present value analysis of pension fund obligations, withdrawal liability, and retirement benefits.

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Our Approach

Accounting and tax matters in litigation often involve high stakes and intense scrutiny. At Dr. John McGowan LLC, we combine the rigor of academic research, the discipline of professional practice, and the clarity of courtroom communication. Each opinion is supported by sound methodology, authoritative sources, and years of practical experience—ensuring our testimony is credible, defensible, and persuasive.