Tokyo University Professor Takatoshi Ito

Tokyo University Professor Takatoshi Ito

Tomohiro Ohsumi/Bloomberg

Takatoshi Ito, dean of the University of Tokyo's graduate school of public policy, said the incremental tax-increase proposal “would have huge costs in terms of the time taken to create and pass laws and the political energy required.” He said in June that a sales tax of at least 15 percent was needed for fiscal reform.