About Oscar R.
Oscar R. Rivera built a foundation in accounting before turning to law. He earned a B.B.A. in Accounting from the University of Miami in 1978 and completed his J.D. at Georgetown University Law Center in 1981. Those credentials set the stage for a career that bridges tax, litigation and business matters.
He is admitted to practice before the United States Tax Court, the Florida bar and the United States District Court for the Southern District of Florida. Early in his career he joined Siegfried Rivera and, in 1984, became managing shareholder. He has maintained that leadership role while overseeing the firm’s legal work and administrative direction.
Rivera’s practice has involved proceedings in federal and tax courts as well as state matters under Florida law. He has represented clients in tax controversies before the U.S. Tax Court and in litigation filed in the Southern District of Florida. His accounting background informs his approach to complex financial and tax issues, and he has handled transactional matters that intersect with those disputes.
His professional life includes active membership in several bar and industry organizations. He belongs to the Florida State Bar and the American Bar Association. He is also a member of the Cuban American Bar Association and the International Council of Shopping Centers, affiliations that reflect both legal and industry connections relevant to business and real estate matters.
Colleagues describe Rivera as steady and pragmatic at the counsel table. He balances courtroom work with firm management duties, overseeing case strategy while attending to the operational needs of a midsize law practice. Over decades at the same firm he has seen changes in tax law and federal procedure and adapted the firm’s practice to those shifts.
As managing shareholder at Siegfried Rivera, he continues to serve clients in tax controversies, federal litigation in the Southern District of Florida, and business matters arising under Florida law.
