Authors
![Mick Keen](/sites/default/files/styles/square_desktop/public/2024-02/Mick%20Keen.jpg?itok=bPh50Kiy)
Michael Keen
Research Associate University of Tokyo
Mick is a Ushioda Fellow at Tokyo College, University of Tokyo and a Research Associate at IFS.
![Person graphic](/sites/default/files/styles/square_desktop/public/2022-06/IFS-person-graphic.png?itok=hWCtTSrz)
Suggested citation
Kay, J and Keen, M. (1992). 'The costs of imperfect tax systems'
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