Tax Policy and Administration Filter by Research Areas Government Finance Research Tax Policy and Administration Estimating the Impact of the Cap on SALT Deductions (2019), by Yonghong Wu Estimating The Impact Of The Cap On SALT Deductions (2021), by Yonghong Wu Taxing New Mobility Providers, by Kate Lowe and Phil Ashton The Earth isn’t Flat, and Neither is Illinois’— or any other state’s— Income Tax by David Merriman, Michael Disher, Francis Choi, and Xiaoyan Hu Funding Source Government Finance Research Center and Institute of Government and Public Affairs