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 in tax credits; so the true cost is only £41. Other concessions with regard to assessment of income (in contrast to means testing used elsewhere) include: Around 7 million people in the UK are entitled to claim Working Tax Credit or the companion Child Tax Credit, although around 2 million people do not do so. The levels of Tax Credit take-up in the UK have not risen in recent years, despite an increase of 100,000 children living in households classed as "below the poverty line" between 2004 and 2005. The introduction of the Working Tax Credit scheme was marred by