The child care provisions in the Build Back Better (BBB) Act will guarantee child care assistance for over 90 percent of working families once it is fully enacted. Under current law, the Child Care and Development Block Grant (CCDBG) allows families with incomes up to 85 percent of state median income (SMI) to access assistance. However, with limited resources, states often set their initial income eligibility far below that threshold. Moreover, even families that meet the income criteria are not guaranteed assistance because of under investment in the system. The BBB Act would expand eligibility from day one, significantly increasing access for families with children under 5. At 100 percent SMI, which is the BBB Act’s FY 2022 income eligibility threshold, the maximum amount a family can earn and still receive assistance would increase by thousands of dollars. (author abstract)