National research agendas are focusing increasing on encouraging cross-disciplinary research collaboration. Research into tax administration should provide a natural context for cross-disciplinary research as it operates at the intersection of several disciplines. However, there is little evidence of cross-disciplinary research in tax administration beyond research into tax compliance and tax evasion. This article argues that such research will provide significant benefits to research output and impact. It provides examples of the benefits in development frameworks for and measures of good practice in tax administration.