Income tax in the United States These treaties reduce the chance of double taxation by allowing each country to fully tax its citizens and residents and reducing the amount the other country can tax them. Generally the treaties provide for reduced rates of tax on investment income and limits as to which business income can be taxed. The treaties each define which taxpayers can benefit from the treaty. The United States social insurance system is funded by a tax similar to an income tax. Social Security tax of 6.2% is imposed on wages paid to employees. The tax is imposed on both the employer and the
Working Tax Credit Prime Minister Tony Blair also apologised to Parliament over the incident. The Working Tax Credit scheme was subject to much criticism, particularly in the wake of the difficulties surrounding its implementation. Criticism focused on the way that credits are calculated on an annual basis, leading to overpayment, followed by large demands for repayment, which those on low income may find difficult to meet. David Harker, chief executive of Citizens Advice, commented "This is an untenable system. An annualised system doesn't provide the stability of income required by low income families." In addition, the scheme was accused of being over-complicated and