It was not until the Abraham Lincoln administration that an income tax was imposed on Americans. Its stated purpose was to finance the war, but it took until 1872 for it to be repealed. During the Grover Cleveland administration, Congress enacted the Income Tax Act of 1894. The U.S. Supreme Court ruled it unconstitutional in 1895. It took the Sixteenth Amendment (1913) to make permanent what the Framers feared -- today's income tax.