The U.S. Tax Court offers two paid internship programs:  

Diversity in Government Internship Program
The DiG Tax program is separate from the Court’s legal internship program, and you need not be a law student to apply.  DiG Tax interns may assist on projects with departments throughout the Court, including Case Services, Facilities, Finance, Human Resources, Library, Information Technology, and Public Affairs.  For more information, see here.

Case Processing Legal Student Intern

The Court is also looking for one or more legal interns to assist in the processing and management of cases not yet assigned to a judicial officer.  This internship opportunity is open to law students and LLM students.  For more information, see here.