From Longman Dictionary of Contemporary Englishoffshore banks/companies/investments etcoffshore banks/companies/investments etcbanks etc that are based abroad in a country where you pay less tax than in your home country offshore financial centres → offshore
Examples from the Corpus
offshore banks/companies/investments etc• All plans are offered with guaranteed clean title in offshore companies.• The table below shows the best deals currently available from offshore banks and building societies.• For a good ways more, Collymore sailed onward to the offshore banks and then anchored.• A review of offshore banks was also started and was expected to lead to several banks losing their licences to operate. 