The six research studies in Volume 32 of Tax Policy and the Economy analyze the U.S. tax and transfer system, in particular its effects on revenues, expenditures, and economic behavior. First, James Andreoni examines donor advised funds, which are financial vehicles offered by investment houses to provide savings accounts for tax-free charitable giving, and weighs their effects on donations against their tax cost. Second, Caroline Hoxby analyzes the use of tax credits by students enrolled in online post-secondary education. Third, Alex Rees-Jones and Dmitry Taubinsky explore taxpayers’ psychological biases that lead to incorrect perceptions and understanding of tax incentives. Fourth, Jeffrey Clemens and Benedic Ippolito investigate the implications of block grant reforms of Medicaid for receipt of federal support by different states. Fifth, Andrew Samwick examines means-testing of Medicare and federal health benefits under the Affordable Care Act. Sixth, Bruce Meyer and Wallace Mok study the incidence and effects of disability among U.S. women from 1968 to 2015, examining the impacts of disability on income, consumption, and public transfers.