I am advised by the Revenue Commissioners that it is not possible to quantify the loss to the Irish Exchequer from tax evasion related to offshore accounts over the past 20 years. Offshore accounts held by Irish citizens for the purposes of tax evasion are very often held in tax haven jurisdictions. A distinguishing feature of tax havens is the active promotion of their secrecy laws, including bank secrecy, which have the effect of facilitating tax evasion and avoidance. Tax havens do not co-operate with other jurisdictions in tax matters and do not exchange information.
Indeed, this problem is not confined to tax havens. Even within the EU, funds placed by non-resident depositors generally are not subject to tax at source in the country of deposit. The interest income would be subject to tax in the depositor's country of residence but, for the most part, information on the interest may not become available to the relevant tax authorities. Deputies will be aware that tax evasion within the EU in respect of interest and other savings income was one of the major issues discussed at the Helsinki summit last weekend.