Offshore financial centre
An offshore financial centre (OFC) is defined as a "country or jurisdiction that provides financial services to nonresidents on a scale that is incommensurate with the size and the financing of its domestic economy." "Offshore" is not always literal since many Financial Stability Forum–IMF OFCs, such as Delaware, South Dakota, Singapore, Luxembourg and Hong Kong, are landlocked or located "onshore", but refers to the fact that the largest users of the OFC are non-residents, i.e. "offshore".
Source: Wikipedia — Offshore financial centre (CC BY-SA 4.0)