Karen J. Tenenbaum, Partner


Karen Tenenbaum

An attorney for over 35 years, Karen founded Tenenbaum Law, P.C., providing legal counsel to individuals and businesses facing IRS and New York State tax problems. Karen and her team have successfully represented clients in matters including Federal and State Audits, IRS Appeals and NYS Conciliation Conferences, Federal and NYS Collection Issues, including Liens, Levies, Warrants and Seizures, Offers in Compromise, Installment Agreements, Responsible Officer Assessments, NYS Residency Audits, NYS Driver’s License Suspension, and NYS Voluntary Disclosures.

Karen is a frequent speaker on IRS and NYS tax issues for numerous professional groups on topics such as New York State Residency, IRS and NYS Collections, and more. Her knowledge and leadership have established her as a leading tax attorney in the NY area. She has been recognized by many organizations and publications such as Super Lawyers. She was selected by her peers for inclusion in the New York Super Lawyers as a practitioner in Tax Law for the past 5 years. Only 5 percent of the lawyers in each state are named for inclusion in the Super Lawyers list. In addition, she was named in Super Lawyers’ Top Women Attorneys in the New York Metro area.

Karen was honored for her exemplary service and dedication to the Tax Committee by the Suffolk County Bar Association. Karen was named one of 16 Leading Lawyers on Long Island by Long Island Press. Karen was honored by Schneps Media at their 2021 Power Lawyers Event. She was recently added to Long Island Business News Power 25 Lawyers List. She was recognized as one of Legal Leaders’ Long Island Top Rated Lawyers and was awarded the Leadership in Law Award from Long Island Business News. SmartCEO awarded Karen the Long Island Future 50 Award and named her a finalist for the CPA & ESQ Award. Karen was a recipient of the Achievers’ Award from the Long Island Center for Business & Professional Women and named as one of the Top 50 Most Influential Women in Business by Long Island Business News. Karen was named a Long Island Power Women in Business by Long Island Press. She was also selected as a Judge Gail Prudenti Outstanding Women in Law Award recipient.

Rated a Top Tax Law Firm by Long Island Business News and a Top Women-Owned Law Firm in NY by the New York Law Journal

Active in the legal and CPA community, Karen is the past chair of the Nassau County Bar Association Tax Law Committee and a past executive board member of the New York State Society of Certified Public Accountants, Nassau Chapter. She is also the recipient of the Samuel B. Traum Achievement Award from the New York State Society of Certified Public Accountants, Nassau Chapter.

Karen has been quoted in the media in Bloomberg Business News, Money Magazine, Long Island Business News, The Daily News, and more on the topics of NYS Residency and NYS Tax Collection Issues. Near the start of the pandemic, she appeared on News 12 Long Island for COVID-19 related tax updates.

  • Karen received her LL.M. (Taxation) from New York University School of Law and her J.D. from Brooklyn Law School.   Karen is admitted to the State Bar of New York and to the U.S. Tax Court. Karen is also a Certified Public Accountant.
  • Vice Chair, Relations with the IRS Committee, NYSSCPA, Nassau Chapter
  • Chair, Tax Law Committee, Suffolk County Bar Association
  • Past Chair, Financial Literacy Committee, New York State Society of Certified Public Accountants (NYSSCPA), Nassau Chapter
  • Past Chair, Tax Law Committee, Nassau County Bar Association
  • Past Executive Board Member, NYSSCPA, Nassau Chapter
  • Past Chair, Professional Skills Development Conference, NYSSCPA, Nassau Chapter
  • Past Chair, IRS Garden City Practitioner Liaison Group
  • Past Co-Chair, Joint Committee of Attorneys and Accountants, NYSSCPA, Nassau Chapter
  • Past Co-Editor, Nassau Newsletter, NYSSCPA, Nassau Chapter
  • Past Chair, Tax Liaison Committee, National Conference of CPA Practitioners (NCCPAP), Nassau/Suffolk Chapter
  • Past Chair, State and Local Taxation Committee, NYSSCPA, Nassau Chapter
  • NYSSCPA, Nassau Chapter (Taxation Committee)
  • American Academy of Attorney-CPAs
  • NCCPAP, Nassau/Suffolk Chapter (Federal and New York State Tax Liaison Committees)
  • Nassau County (Tax Law Committee), Suffolk County (Tax Law Committee), New York State (Tax Section) and American Bar Associations (Section of Taxation)
  • IRS Long Island Practitioner Liaison Group
  • Long Island Tax Practitioner Planning Symposium Committee
  • Staff Member, Brooklyn Journal of International Law

CPA (Certified Public Accountant) – Certified – August 1985

Click here for a complete list of events.

  • Careers in Tax Law Event at Touro Webinar Careers in Tax Law
  • Suffolk Academy Of Law Webinar Residency
  • Tax Practitioner’s Institute Webinar State Residency Tax Issues
  • NYS Society of Enrolled Agents Webinar NYS Residency
  • Suffolk Academy of Law Webinar | Topic: 6 Key Numbers
  • NYU Tax Controversy Forum
  • Long Island Tax Professionals Symposium
  • Nassau County Bar Association – Tax Law Committee; Dean’s Hour
  • Suffolk County Bar Association – Tax Law Committee
  • New York State Bar Association – Tax Section; Senior Lawyer’s Section
  • American Bar Association – Section on Taxation
  • NYSSCPA – Taxation Committee (Nassau Chapter); Estate Planning Committee (Nassau Chapter); CFO Committee (Nassau Chapter)
  • American Academy of Attorney-CPAs
  • Florida Institute of Certified Public Accountants – Gold Coast and Atlantic Chapters
  • Foundation for Accounting Education
  • Estate Planning Council of Suffolk County
  • Estate Planning Council of Nassau County
  • National Conference of CPA Practitioners (Nassau/Suffolk Chapter)
  • The Tax and Accounting Institute, School of Professional Accountancy, College of Management, LIU Post Campus, Long Island University
  • Tampa Bay Estate Planning Council
  • UJA Federation of New York