U.S. welfare and tax policies targeting single mothers were transformed over a decade ago. What was the impact on single mothers’ happiness? Using data from the General Social Survey, difference in difference estimators are calculated. According to a new study by John Ifcher, the results appear to indicate that the package of welfare and tax policy changes increased happiness. The results are largely consistent across three comparison groups and robust to various specification checks. This research nicely complements the literature by examining the impact of the welfare and tax policy changes on a novel outcome measure, self-reported happiness.