The House of Representatives has passed variants on four provisions in President Bush's FY2005 Budget: marriage penalty relief (H.R. 4181), a temporary increase in the AMT exemption (H.R. 4227), an increase in the 10-percent tax bracket thresholds (H.R. 4275), and an increase in the child credit and making it available to taxpayers with higher incomes (H.R. 4359). This paper discusses the potential implications of those bills on revenues, the distribution of tax liabilities, and the economy.