We investigate the effects of marginal changes of marginal tax rates of Japanese income tax system, computing the social marginal costs of public funds (SMCF) generated by marginal increase in tax rates. We use large micro data sets on Japanese households, and estimate a structural discrete...

This study proposes a method to obtain the social marginal costs of public funds (SMCF) that allows for heterogeneity on a household basis as well as labor supply responses along both the extensive and the intensive margins. To demonstrate our methodology, we take the example of the 1999...