The United States federal earned income tax credit or earned income credit (EITC or EIC) is a refundable tax credit for low- to moderate-income working individuals and couples, particularly those with children. The amount of EITC benefit depends on a recipient’s income and number of children. For a person or couple to claim one or more persons as their qualifying child, requirements such as relationship, age, and shared residency must be met. In the 2013 tax year, working families, if they have children, with annual incomes below $37,870 to $51,567 (depending on the number of dependent children) may be eligible for the federal EITC. Childless workers that have incomes below about $14,340 ($19,680 for a married couple) can receive a very small EITC benefit. U.S. tax forms 1040EZ, 1040A, or 1040 can be used to claim EITC without qualifying children. To claim the credit with qualifying children, forms 1040A or 1040 must be used along with Schedule EITC attached.