Marc S. MaserShareholder | BusinessMarc helps clients buy and sell companies, and structure and finance tax-efficient domestic and foreign business transactions.

Marc S. Maser

Marc brings unusual background and perspective to his work advising on corporate transactions and tax matters.

With 30 years in practice, an advanced degree in taxation, and certification as an accountant, clients rely on Marc for thoughtful, experienced counsel in a variety of circumstances.

His counsel includes general corporate and business advice, with a focus on negotiating and structuring complex taxable and tax-free acquisitions, dispositions, joint ventures and other business combinations.

Marc has considerable experience with international transactions, frequently representing U.S. companies doing business abroad as well as foreign companies operating in the United States.

He also advises businesses and individuals regarding federal, state and local tax considerations, counsels clients on trust and estate matters, and represents clients in tax controversies before the IRS and the Pennsylvania Department of Revenue. In addition, Marc represents banks and a range of borrowers in financing transactions.

Beyond McCAUSLAND Keen + Buckman

  • Trustee of non-profit Coriell Institute for Medical Research
  • Ardent Penn State fan: Marc, his wife and 4 children are all alums

Selected Representative Matters

Counseled a managing general underwriter in the sale of its business to a specialty insurance company controlled by a Canadian public company

Represented one of the largest Delaware banking institutions in the purchases of multi-family office and wealth management businesses

Negotiated and facilitated the sale of a global plastics manufacturing company to a German public company

Represented a Northeast regional fabricator and distributor of steel products in the purchase of a Western Pennsylvania rebar fabrication and distribution business

Advised a closely-held S corporation in a tax-free reorganization that isolated liability exposure and maximized tax efficiencies

Represented a Belgian private equity firm in the acquisition of a controlling interest in a U.S. speaker manufacturer

Publications + Media Mentions

September 26, 2018 "New Rule 199 + Other Tax Law Provisions," USA Payroll sponsored CPE Seminar.
March 28, 2018 "Making Sense: Understanding Tax Reform," Presentation in collaboration with WSFS.
April 8, 2015 “S Corporations: Mergers and Acquisitions,” Temple University School of Law, L.L.M. in Tax Program.
October 16, 2013 “Code Section 108: What Happens When the Debt Goes Away,” Delaware County Attorney/CPA Forum.
November 4, 2009 “Treatment of Losses Resulting From Fraudulent Investment Schemes,” Delaware County Attorney/CPA Forum.

Affiliations + Recognitions

  • Pennsylvania Bar Association


  • Delaware County Attorney/CPA Forum

    Member and Past President

  • Coriell Institute for Medical Research

    Board of Trustees

  • Martindale Hubbell “Preeminent” AV Rated



  • New York University

    LL.M. in Taxation

  • Temple University

    Juris Doctor

  • Pennsylvania State University

    Bachelor of Science, with Highest Distinction

  • Pennsylvania

  • U.S. Tax Court