Offshore banking has often been associated with the underground economy and organized crime, via tax evasion and money laundering; however, legally, offshore banking does not prevent assets from being subject to personal income tax on interest. Except for certain persons who meet fairly complex requirements[1], the personal income tax of many countries[2] makes no distinction between interest earned in local banks and those earned abroad. Persons subject to US income tax, for example, are required to declare on penalty of perjury, any offshore bank accounts—which may or may not be numbered bank accounts—they may have. Although offshore banks may decide not to report income to other tax authorities, and have no legal obligation to do so as they are protected by bank secrecy, this does not make the non-declaration of the income by the tax-payer or the evasion of the tax on that income legal. Following September 11, 2001, there have been many calls for more regulation on international finance, in particular concerning offshore banks, tax havens, and clearing houses such as Clearstream, based in Luxembourg, being possible crossroads for major illegal money flows.
Defenders of offshore banking have criticised these attempts at regulation. They claim the process is prompted, not by security and financial concerns, but by the desire of domestic banks and tax agencies to access the money held in offshore accounts. They cite the fact that offshore banking offers a competitive threat to the banking and taxation systems in developed countries, suggesting that Organisation for Economic Co-operation and Development (OECD) countries are trying to stamp out competition.
