The federal Earned Income Tax Credit (EITC), and its state counterpart, the California Earned Income Tax Credit (CalEITC), provided low-income Californians with a nearly 7billionboostin2018.Thisreportprovidesanin−depthanalysisoftheapproximately2.8millionhouseholdswhoclaimedthecredits,includinghouseholdsize,whichhouseholdsareclaimingbothcredits,thefinancialimpacts,andacounty−by−countybreakdown,includingtheaverageamountofeachcreditclaimedineachcounty.TheCalifornialegislatureandGovernorNewsomapprovedasignificantexpansiontotheCalEITCin2019.TheexpansionisexpectedtodoubletheamountofCalEITCcreditsclaimed,andcoupledwithanewYoungChildTaxCredit,thetotalvalueofthestatecreditsisexpectedtoreach1 billion. This report provides an important roadmap for policymakers interested in understanding who this important anti-poverty program reaches in California.This work has been supported, in part, by the University of California Multicampus Research Programs and Initiatives grant MRP-19-600774