Income tax return for taxation also vary, making comparisons all the more difficult. Countries that tax income generally use one of two systems: territorial or residential. In the territorial system, only local income – income from a source inside the country – is taxed. In the residential system, residents of the country are taxed on their worldwide (local and foreign) income, while nonresidents are taxed only on their local income. In addition, a very small number of countries, notably the United States, also tax their nonresident citizens on worldwide income. Countries with a residential system of taxation usually allow deductions or credits
Working Tax Credit or those with drug-dependent parents", despite their tax credit incomes, remaining in poverty. Even with the previous definition, this government claimed that the existing tax credits system failed to "meet its statutory target to halve the problem by 2010 – despite the huge amount of taxpayers’ money spent on tackling it." Working Tax Credit Working Tax Credit (WTC) is a state benefit in the United Kingdom made to people who work and have a low income. It was introduced in April 2003 and is a means-tested benefit. Despite their name, tax credits are not to be confused with tax credits