Includes personal transfers and compensation of employees. Personal transfers consist of all current transfers made or received by resident households to or from nonresident households. Compensation of employees refers to the income of border, seasonal, and other short-term workers who are employed in an economy where they are not resident and of residents employed by nonresident entities.

Source, Portugal (received and sent)
Banco de Portugal, Balance of Payment Statistics (BOP). LINK BpStat

Source, all countries (international comparison)
World Bank, World DataBank, World Development Indicators. LINK World Bank