This research purports to examine the effect of the dividend policy on individual and institutional ownership with the change on tax regulation as a moderating variable. Examination was done using moderated regression analysis (MRA), using a sample of 45 companies that listed on the BEI for the period of 2007-2010. The result of this study indicates that the dividend policy has a positive but not significant effect on individual ownership. However, if it is moderated by changes in taxation regulation in the form of reduction and simplification of the tax rate on dividend income received by an individual within the country in accordance with Law No.36/2009, Government Regulation No.19/2009 and PMK No.111/PMK.03/2010, the result is positive and significant. By contrast, the institutional ownership is negatively and significantly affected by dividend policy before as well as after it is moderated by changes in taxation regulation.