Selected tax policy reports include:

• A Tax-Systems Perspective on Recent Global Initiatives (with Joel Slemrod, January 2017)
• Distinguishing between "normal" and "excess" returns in tax policy (November 2016)
• Fiscal incentives for R&D and innovation in a diverse world (September 2016)
• OECD/G20 Base Erosion Profit Shifting (BEPS) Project Action 11 Report Measuring and Monitoring BEPS (October 2015)  
• Total State and Local Business Taxes: State-by-State Estimates for FY10 (EY and Council on State Taxation (COST), 2011)   Latest estimates for FY14.
• Irish Ministry of Finance, Economic and Budgetary Impact of the of Common Consolidated Corporate Tax Base (CCCTB) in the European Union (2012)   In particular, see Chapter 6 on Lessons from US States' experience with income combination and apportionment.
• Competitiveness of state and local business taxes on new investment: Ranking states by tax burden on new investment (EY/COST, 2011) 
• The economic incidence of additional state business taxes (2010)
• Tax risk and strong corporate governance (2004)
• Blurred tax boundaries: The new economy's implications for tax policy (2000)
• 1950s depreciation class lives for the 21st century: Distortions in the current system (2000)
• More to be added.