Provisions were included in the new US Double Taxation Convention (Article 18(1)(b)) to exempt US social security pensions paid to residents of Ireland from tax in the US. Such pensions had previously been subject to a final US withholding tax at a rate of 15 per cent up to January 1995 and at an effective rate of 25.5 per cent thereafter. This generally resulted in a much higher rate of tax in the US than would apply if the pensions were taxed only in Ireland.
Although there are exemptions from US withholding tax on pensions in some of the US's older treaties, the exemption obtained for Irish recipients is a first in a modern US treaty. It was only reluctantly conceded on the basis that these pensions would be liable to tax in Ireland, subject to whatever allowances and exemptions applied. The US was concerned not to create a double exemption for such pensions. As a result, section 200 of the Taxes Consolidation Act, 1977, was amended in order to remove any doubt concerning the liability to Irish tax of these pensions.