Jeffrey Owens (OECD Centre for Tax Policy & Administration) has published Fundamental Tax Reform: An International Perspective, 59 Nat’l Tax J. 131 (2006).  Here is the abstract:

This paper examines trends in tax reforms. The analysis is limited to the experience of 30 OECD countries, and focuses particularly on changes since the year 2000. The paper analyses the general trend of reductions in both tax revenues and rates and the diversity in tax policies across OECD countries, reflecting the diversity in both economic circumstances and policy objectives. Developments in tax administration are also briefly dealt with. Some of the challenges for tax policymakers and administrators that are likely to arise over the next few years are identified, and possible alternative approaches to solving them are put forward.