Congressional Research Service, December 2015. This report examines estimated benefit receipt by families from nine major need-tested benefit programs in 2012. The nine programs are the Supplemental Nutrition Assistance Program (SNAP); the Earned Income Tax Credit (EITC); Supplemental Security Income (SSI); subsidized housing assistance; the Additional Child Tax Credit (ACTC); the special supplemental nutrition program for Women, Infants, and Children (WIC); Temporary Assistance for Needy Families (TANF) cash assistance; the Child Care and Development Fund (CCDF); and the Low-Income Home Energy Assistance Program (LIHEAP). The estimates are derived from a combination of information from a Census Bureau household survey and a model that estimates program eligibility and participation based on information from that survey.

https://www.fas.org/sgp/crs/misc/R44327.pdf