Income tax in the United States increase complexity, irrespective of the system's flatness or lack thereof. Income tax is also levied by most U.S. states and many localities on individuals, corporations, estates, and trusts. These taxes are in addition to federal income tax and are deductible for federal tax purposes. State and local income tax rates vary from 1% to 16% of taxable income. Some state and local income tax rates are flat (single rate) and some are graduated. State and local definitions of what income is taxable vary highly. Some states incorporate the federal definitions by reference. Taxable income is defined separately and differently for
Income tax in the Netherlands employed and self-employed people there is an employment rebate. The wage withholding tax is a deduction of wages, social security benefits and pensions, as an advance payment for the income tax, paid through the employer, etc. See also . From 2006 there is a new national health insurance scheme ("zorgverzekering(swet)", "Zvw" ). The premium is partly income-dependent and paid as a tax supplement. It applies for the "contribution income" ("bijdrage-inkomen" ), which is part of box 1, including labor income, social security benefits, pensions, and life annuities (it does not include the "owner-occupied dwelling income"). It is withheld if the