Abstract: Cross-national survey data shows that for a significant share of European citizens, corruption is acceptable. Notwithstanding the importance of prior knowledge on corruption extension and experience, research has made little progress in exploring why people condone it, especially in unsuspicious countries, with effective institutions and stable democratic rules and processes. The present study examines this gap in the literature by assessing the European Values Study (EVS) and the Special Eurobarometer (EB) attempts at measuring ‘Tolerance towards Corruption’ (TtC) in OECD countries in Europe during the same period (2017–2019). In the end, measurements proved to be constrained by the limited number of questions/items that try to capture TtC, which gave room to conclude that: (a) EVS and EB approaches do not measure the same TtC. The first measures it through social transgressions not exclusively related to corruption, while the second measures the willingness to accept a public-office corruption when dealing with the public sphere. (b) Lower ages combined with individual preferences/perceptions of less satisfaction with life, widespread corruption, and prior experiences with corruption proved to be more relevant to explain TtC, regardless of the country in which individuals were surveyed. (c) The type of TtC citizens display in advanced democracies proved to be mainly contingent on their age and on the way they interpret the extension of corruption and the prior contact they had with a public-office corruption in a given society.