NFIA = Factor income earned from abroad by residents – Factor income of non-residents in domestic territory. Significance of NFIA: NFIA is significant to differentiate between 'Domestic Income' and 'National Income'. Net factor income earned from abroad which is used to differentiate between national income and domestic income. Answer · Net factor income from abroad is factor income received from abroad minus factor incomes paid abroad. Click here to get an answer to your question ✍ What is meant by factor income to abroad? State its components.