doi:10.1007/s10368-025-00657-9engPeña, GuillermoAdopting the euro does not work without political integrationART-2025-143574A new empirical exercise for dealing the effects of monetary unions on welfare is developed. The estimates of the effects of adopting the euro using a sample of 216 countries for the 1960–2021 period apply a novel multiple-period differences-in-differences approach. They show a significant and robust negative effect on economic growth of adopting the euro, mainly for the countries with the highest income inequality.2025http://zaguan.unizar.es/record/15314410.1007/s10368-025-00657-9http://zaguan.unizar.es/record/153144oai:zaguan.unizar.es:153144info:eu-repo/grantAgreement/ES/DGA/S15-24info:eu-repo/grantAgreement/ES/DGA/S39-23Rinfo:eu-repo/grantAgreement/ES/MICINN/PID2020-112773GB-I00info:eu-repo/grantAgreement/ES/UZ/JIUZ2022-CSJ-19International Economics and Economic Policy 22, 30 (2025), [21 pp.]by-nc-ndhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.esinfo:eu-repo/semantics/openAccess