Center on Budget and Policy Priorities. September 2021. A new report from the Center on Budget and Policy Priorities (CBPP) examined early data on the impact of the expanded Child Tax Credit (CTC), recommending that federal economic recovery legislation should make the expansion permanent for the lowest-income families, many of whom were ineligible for the credit before the expansion.

https://www.cbpp.org/research/federal-tax/recovery-package-should-permanently-include-families-with-low-incomes-in-full