Which final check is most useful when solving advanced questions related to GNP?
A reliable final check for GNP is to ask two questions: does the item represent final production during the accounting period, and is it connected with the country's normal residents when the national rather than domestic boundary is relevant? This check helps separate GDP from GNP, current production from resale, factor income from transfer receipts, and NFIA from unrelated financial flows. Cash receipt, government origin, or age of a transaction is not the defining test.