This paper contributes to the study of the gender wage gap in the Spanish services sector, through the specific analysis of its four main sub-sectors: hospitality industry, transport industry, travel agencies services and other complementary services. Its objective is to analyse the different determinants of the gender wage gap across the wage distribution. This analysis makes it possible to examine the extent to which these determinants affect the wage decomposition in each sector in a heterogeneous way, showing whether there are significant differences in the discriminatory and non-discriminatory components between the different wage levels. Among the factors analysed, vertical gender segregation and the human capital of workers stand out. In relation to the latter determinant, special attention is paid to education and educational mismatch.