This brief documents the proportion of Americans who would have been poor absent the Earned Income Tax Credit (EITC), all else being equal, across 2010–2014. We examine Supplemental Poverty Measure (SPM) rates as well as hypothetical increases in the rates of SPM poverty in the absence of federal EITC benefits. It is important to note that we do not model behavioral changes that might result from the removal of EITC benefits, so the analyses presented here are a simplified representation of such a hypothetical scenario. The SPM is an obvious choice for this analysis because unlike the Official Poverty Measure (OPM), which only accounts for before-tax cash income, the SPM also considers in-kind benefits, tax credits, and out-of-pocket work and medical expenses when estimating resources. We present SPM rates for all individuals (Table 1) as well as for children only (Table 2), analyzing trends across regions, metropolitan status, and by state. Importantly, geographic differences in the cost of housing are accounted for in the SPM rates, and consequently the analyses presented here give a more accurate sense of the poverty reducing impact of EITC benefits.