Carrie Garber Siegrist

Carrie Garber Siegrist

Carrie Garber Siegrist
Washington, DC
+1 202 346 4436
Carrie Garber Siegrist is a senior associate in Goodwin’s Tax-Exempt Organizations practice. She counsels mission-driven tax-exempt organizations on a full range of tax, corporate, and transactional matters. Carrie serves domestic and international exempt organizations including public charities, private and company foundations, higher education institutions, trade and professional associations, healthcare systems, and advocacy organizations. She advises tax-exempt organizations on formation and tax-exemption applications, governance structures and board matters, tax-exemption compliance, unrelated business income liability, structuring affiliations and subsidiaries including social enterprises, board of directors and membership matters, lobbying and issue advocacy campaigns, political campaign activities, domestic and international grantmaking, and major corporate transactions. She also advises on charitable giving.

Areas of Practice

Professional Experience

Immediately prior to joining Goodwin, Carrie worked with KPMG’s Washington National Tax practice in its Exempt Organizations group as a Senior Manager. Prior to legal practice, Carrie was a 5th grade teacher in The Bronx with Teach For America.

Professional Activities

Carrie is a member of the District of Columbia and American Bar Associations. She is the former Chair and Vice Chair of the D.C. Bar’s Tax-Exempt Organizations Committee and the former Vice-Chair of the American Bar Association’s Nonprofit Organizations Committee Trade and Professional Association Subcommittee. Carrie is also a member of the American Society of Association Executives (ASAE). 

Carrie is an Adjunct Associate Professor of Law with American University Washington College of Law where she teaches nonprofit law courses.




Georgetown University


American University

(cum laude)


Bank Street College of Education


Bates College



  • New Jersey
  • Pennsylvania
  • Washington, D.C.


  • U.S. Tax Court

Recognition & Awards

Carrie was recognized as a 2024 Best Lawyers: Ones to Watch and as a Super Lawyer "Rising Star” in 2020 for nonprofit organizations law. She has also been recognized as a high honors recipient on the Capital Pro Bono Honor Roll (2018 – 2020) for her pro bono work.


Carrie is a frequent speaker on nonprofit tax-exempt matters at continuing legal education seminars and training programs such as:

  • Council on Foundations, “Guide to Granting Scholarships to Individuals” for the Mastering Foundation Law: The Council on Foundations Compendium of Legal Resources (2023)
  • PLI’s Advising Nonprofit Organizations 2023, “Nonprofit & Tax-Exempt Public Charity Compliance Primer” (2023)
  • ALI CLE, “Donor Advised Funds Update: A Philanthropic Strategy in the Crosshairs” (2023)
  • D.C. Bar, Taxation Community, Exempt Organizations Committee, “Tax-Exempt LLCs – Announcement 2021-56” (2022)
  • ALI CLE, “Donor Advised Funds Update: Current Developments Including the ACE Act” (2021)
  • ASAE Annual Meeting, “Unenforceable? A Legal Deep Dive into Association Codes of Ethics & Conduct” (2020)
  • ALI CLE, “Five Key Updates for Nonprofits: Staying Ahead in 2020 and Beyond” (2020)
  • ASAE Annual Meeting, “Creative Legal Structuring for Revenue-Generating Opportunities” (2019)
  • ALI CLE, “Maximizing Nonprofit Impact: Key Considerations in 501(c)(3) & 501(c)(4) Affiliations” (2019)
  • Foundation Center, “International Nonprofit Operations: Key Legal Considerations” (2018)
  • American Bar Association Section on Taxation May Meeting, “Teaching Tax: Incorporating the New ABA Teaching Standards into the Tax Curriculum” (2017)
  • Council on Foundations Annual Meeting, “Self-Dealing and the Duty of Loyalty: Revisiting the Sibley Hospital Case” (2016)
  • Council on Foundations Annual Meeting, “Scholarships: Unique Challenges and Issues for Public Charities and Private Foundations” (2015)