From Longman Dictionary of Contemporary Englishinvisible earnings/exports/trade etcinvisible earnings/exports/trade etcBBBFmoney that is made from services and tourism rather than from products → invisible
Examples from the Corpus
invisible earnings/exports/trade etc• Moreover, the major source of under-recording on the balance of payments up to 1949 was invisible trade.• Such earnings are little appreciated outside the specialist areas of business such as finance and insurance which directly contribute to invisible earnings.• Trade gap narrows despite cut in invisible earnings.• On this basis, Britain was the world's biggest generator of invisible earnings, and has probably remained so this year.• This has been undesirable, but not of critical importance because our income from invisible exports has made good the difference.• There were probably invisible exports too: exports of technical skill and artistry, exports of medicine and magic. 