Get to Know Me

Marcus is a principal with over 15 years of providing tax and business advisory services. As one of the leaders of Withum’s Tax Controversy practice, he has extensive experience in resolving federal, state and local tax controversies including, but not limited to, matters involving Tax Examinations, Appeals, Collections, Innocent Spouse, Responsible Party, and Offer-in-Compromise.

In addition, he has experience in the field of law representing clients in commercial and tax disputes before state courts, Federal District Court and the United States Tax Court. Marcus also has extensive experience in alternative dispute resolution, which he frequently used to resolve disputes by means other than litigation.

Let’s get started with a conversation today.

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As for business transactions, he has experience in drafting, reviewing and negotiating the language of a wide array of transactions documents including, but not limited to, buy/sell agreements, portfolio management agreements, swap agreements, limited liability company agreements and indentures.

He is admitted to practice law in Federal District Court as well as United States Tax Court.

Latest Thinking

BINJE Names Marcus Dyer to 2026 Best Black Business Leaders List

Withum is proud to share that Business in New Jersey – Everyday has named Marcus Dyer to their Best Black Business Leaders list for 2026. Marcus Dyer, Principal, was recognized for his industry expertise and contributions […]

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Justice Served: Gavel Striking 'TAX' Block in Dramatic Courtroom Scene
When Civil and Criminal Lines Blur: What the IRS Leadership Reshuffle Means for Tax Enforcement 

The line between tax auditors policing mere civil infractions and investigators pursuing serious tax crimes is beginning to blur in the latest reorganization at the top of the Internal Revenue […]

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government shutdown
IRS Enforcement Staff Face Indefinite Furloughs as Funding Impasse Continues

The federal government shutdown began on October 1, 2025, after lawmakers failed to reach an agreement to extend government funding. Because of this, the Internal Revenue Service has furloughed approximately […]

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