Tourism expenditure refers to the amount paid for the acquisition of consumption goods and services, as well as valuables, for own use or to give away, for and during tourism trips. Outbound tourism expenditure refers to the tourism expenditure of a resident visitor outside the economy of reference. Expenditure associated with the activity of visitors has been traditionally identified with the travel item of the Balance of Payments (BOP): in the case of outbound tourism, those expenditures associated with resident visitors are registered as debits in the BOP and refers to travel expenditure. As in the case of inbound tourism, BOP data are used. The 2008 International Recommendations for Tourism Statistics consider that tourism industries and products includes transport of passengers. Consequently, a better estimate of tourism-related expenditures data by resident and non-resident visitors in an international scenario would be, in terms of the BOP, the value of the travel item plus that of the passenger transport item. Nevertheless, users should be aware that BOP estimates include, in addition to expenditures associated with visitors, those related to other types of travelers.