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In this article, we sum up the literature on the study of Granger causality relationships between tourism and income using a meta-regression analysis. We conclude that the acceptance of the tourism-led growth hypothesis is likelier the higher the countries’ degree of tourism specialization and population size. However, neither these variables nor the level of economic development is relevant for the explanation of the probability of acceptance of the hypothesis of reverse Granger causality. Notwithstanding these results, we find that several features of the research design are associated with the acceptance of both hypotheses.