Numerous papers show that Earned Income Tax Credit (EITC) expansions have increased maternal labor supply, but little is known about how this effect differs by geography or metropolitan status. Using various datasets and exploiting several EITC expansions, I find that the EITC consistently had larger positive effects on the labor supply of unmarried mothers in rural and economically distressed areas. Among married mothers, I find small negative effects in suburban and urban areas and small positive effects in rural areas. I also replicate and extend previous EITC research to show that these effects hold for EITC expansions spanning 1975 to the 2010s.

许多论文表明，所得税抵免 (EITC) 的扩大增加了孕产妇劳动力供应，但人们对这种影响如何因地理位置或大都市地位而异的情况知之甚少。使用各种数据集并利用 EITC 的几次扩展，我发现 EITC 对农村和经济困难地区未婚母亲的劳动力供应始终具有较大的积极影响。在已婚母亲中，我发现郊区和城市地区的负面影响较小，而农村地区的正面影响较小。我还复制并扩展了之前的 EITC 研究，以表明这些影响对于 1975 年至 2010 年代的 EITC 扩张也适用。