An attorney for over 35 years, Karen founded Tenenbaum Law, P.C., which helps individuals and businesses facing IRS and New York State tax problems. Karen is a frequent speaker on IRS and NYS tax issues for numerous professional organizations, including the NCCPAP Accounting and Tax Symposium, AAA-CPA, New York State Society of Enrolled Agents and more. Presently, she serves as the Chair of the Suffolk County Bar Association Tax Law Committee. 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.

Karen has been honored by the Suffolk County Bar Association Tax Committee with the Award of Recognition for her Exemplary Service to the Tax Law Committee and by Schneps Media with the Power Lawyers Award. She has been inducted into Long Island Business New’s Hall of Fame and was listed on the Power 25 Lawyer List. Karen has been named a New York Metro Super Lawyer for many years.

Lance E. Rothenberg is a tax attorney focusing on state and federal tax controversies and disputes.  He has recently joined Tenenbaum Law, P.C. as Of Counsel to the firm.  Lance has broad experience assisting a wide-range of businesses and business owners, from Fortune 100 companies and high net-worth individuals to small and mid-size businesses, facing a variety of federal, state, local, and multi-state tax issues, including sales and use taxes, corporate income and franchise taxes, personal income taxes, and excise taxes.

Prior to joining Tenenbaum Law PC, Lance gained significant tax experience working at prominent, international law firms in both Washington, DC and New York, NY.  Most recently, he was a Tax Director at a nationally recognized accounting firm.

Lance represents clients facing federal and state audits before the IRS and state tax departments, in collection proceedings, with residency audits, with voluntary disclosure matters, and when necessary, in appeals before administrative tribunals and federal and state courts.  He assists clients with obtaining advisory opinions and letter rulings, in addressing multi-state nexus issues, with tax clearance issues, with responsible person trust fund assessments, and with responding to routine audit notices.

Lance is a frequent author and lecturer on a variety of state and local tax topics, including sales tax audits and New York residency audits.