In this study, I analyze the characteristics of trading firms in the Spanish service sector. I reveal that half of the service firms in Spain operate only in their local markets, whereas one-third of them trade with non-local areas of Spain, and fewer than 20% trade with other nations. As in the manufacturing sector, trading firms in the service sector exhibit premia relative to non-traders with respect to size, labor productivity and average wages. Larger premia are observed for firms that trade with more distant markets and for firms that participate in bidirectional trade. Service firms that trade with non-local areas of Spain also exhibit similar premia relative to firms that trade only in their regional markets. I demonstrate that compared with non-trading firms, firms that engage in trade with foreign countries are more productive even before they have commenced their trading activities. However, I do not find that the initiation of trade with foreign nations by trading firms is followed by improvements in the productivity of these firms relative to non-trading firms.

Key words: exports, services, firm-level evidence, Spain, productivity, heterogeneity.
JEL Classification: F14, F19, F23.