This study explores possible policy options for dual income taxation(DIT) and analyzes the distribution effect of the tax reform. Although current tax system is similar to the DIT system, we can find equity problems in taxation across various capital incomes. We construct 3 DIT scenarios for Korean economy which include variations of repeal of global taxation system for financial incomes, taxation for capital gains of real estate, and allowance for corporate equity. Using household survey of National statistical office(NSO), We find that income distribution can be improved under scenario 2 which includes repeal of global taxation system for financial incomes, tax exemption for various saving types, and decrease of corporate income tax rate by 0.5%p. The reason is that revenue increase from capital incomes allows us to decrease value added tax which is regressive. However, when we include allowance for corporate equity(scenario3), income distribution is worse than before since value added tax rate is increased to recover revenue loss from corporate income taxation. In sum, moving to DIT in Korea does not cause big change in income distribution which suggests that the repeal of global taxation system for financial incomes and various tax exempted saving accounts.