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 Income tax in the Netherlands Income tax in the Netherlands (personal, rather than corporate) is regulated by the "Wet inkomstenbelasting 2001" (Income Tax Law, 2001). The fiscal year is the same as the calendar year. Before April 1 citizens have to report their income from the previous year. The system integrates the income tax with fees paid for the general old age pension system (AOW), the pension system for partners of deceased people (), and the national insurance system for special medical care (). There are three categories of income, each with their own tax rates. They are referred to