Joann Martens Weiner is an adjunct professor of economics at George Washington University, where she teaches public economics in the Economics Department and leads a seminar on the financial crisis in the MBA program at the Business School. She recently worked as a contributing editor for Tax Analysts where she primarily wrote about international and national tax issues.   From 1992 to 1999, she was an economist in the Office of Tax Analysis at the U.S. Treasury Department. While living in Brussels from 1999 to 2006, she worked as a consultant to the European Commission on their company tax reform project, taught economics at the Facultés Universitaires Saint-Louis, and was on the editorial board of the EC Tax Review.  

Dr. Weiner earned a Ph.D. in Economics from Harvard University and a B.S. in Business Administration from the University of California at Berkeley.  Her book, Company Tax Reform in the European Union. Guidance from the United States and Canada on Implementing Formulary Apportionment in the EU (Springer: New York), was published in 2006.