[ Brookings Institution] This brief argues that the time is ripe for an integrated credit that combines the Earned Income Tax Credit (EITC) and the CTC into an Earned Income Child Credit (EICC). The proposed EICC simplifies and standardizes the definition of qualifying children and those who may claim them, and indexes the new credit for inflation so that it retains its purchasing power over time. The EICC also provides enhanced benefits to low-income working families and reduces marginal tax rates. One version would cost $6 billion relative to current law (JGTRRA) in calendar year 2003.