Jacqueline Laínez Flanagan joined the Center for Taxpayer Rights as Deputy Director in 2023. She previously served as the Founding Director of the Low Income Taxpayer Clinic (LITC) at the University of District of Columbia David A. Clarke School of Law, where she also taught Contracts, Federal Personal Income Taxation, and directed a Tax Policy Clinic as a pilot.

Jacq has served as a Visiting Professor of Law at American University Washington College of Law, teaching Legal Ethics, State and Local Taxation, and co-teaching in the Janet R. Spragens Federal Tax Clinic. Her other teaching appointments have included the University of Richmond, The George Washington University Law School, and the University of Memphis. Her legal practice has primarily been comprised of tax, intellectual property, and nonprofit consulting. She has represented small businesses, social enterprises, and start-ups, as well as immigrant and low wage workers.

Her legal scholarship, community service, professional presentations, and media appearances have focused on the intersection between taxation and immigration, human rights, and corporate accountability. She earned a law degree from the University of Illinois Chicago School of Law, and LL.M degrees from Georgetown University Law Center (taxation) , and The George Washington University Law School (Friedman Fellow). She is licensed to practice in Washington, D.C., and admitted to practice before the United States Tax Court.