Income tax in the United States in the context of "Internal Revenue Code"

A 501(c) organization is a nonprofit organization in the federal law of the United States according to Internal Revenue Code (26 U.S.C. § 501(c)). Such organizations are exempt from some federal income taxes. Sections 503 through 505 set out the requirements for obtaining such exemptions. Many states refer to Section 501(c) for definitions of organizations exempt from state taxation as well. 501(c) organizations can receive unlimited contributions from individuals, corporations, and unions.

For example, a nonprofit organization may be tax-exempt under section 501(c)(3) if its primary activities are charitable, religious, educational, scientific, literary, testing for public safety, fostering amateur sports competition, or preventing cruelty to children or animals.

The United States has separate federal, state, and local governments with taxes imposed at each of these levels. Taxes are levied on income, payroll, property, sales, capital gains, dividends, imports, estates and gifts, as well as various fees. In 2020, taxes collected by federal, state, and local governments amounted to 25.5% of GDP, below the OECD average of 33.5% of GDP.

U.S. tax and transfer policies are progressive and therefore reduce effective income inequality, as rates of tax generally increase as taxable income increases. As a group, the lowest earning workers, especially those with dependents, pay no income taxes and may actually receive a small subsidy from the federal government (from child credits and the earned income tax credit). Taxes fall much more heavily on labor income than on capital income. Divergent taxes and subsidies for different forms of income and spending can also constitute a form of indirect taxation of some activities over others. Taxes are imposed on net income of individuals and corporations by the federal, most state, and some local governments. Citizens and residents are taxed on worldwide income and allowed a credit for foreign taxes. Income subject to tax is determined under tax accounting rules, not financial accounting principles, and includes almost all income from whatever source, except that as a result of the enactment of the Inflation Reduction Act of 2022, large corporations are subject to a 15% minimum tax for which the starting point is annual financial statement income.

In the United States income tax system, adjusted gross income (AGI) is an individual's total gross income minus specific deductions. It is used to calculate taxable income, which is AGI minus allowances for personal exemptions and itemized deductions. For most individual tax purposes, AGI is more relevant than gross income.

Gross income is sales price of goods or property, minus cost of the property sold, plus other income. It includes wages, interest, dividends, business income, rental income, and all other types of income. Adjusted gross income is gross income less deductions from a business or rental activity and 21 other specific items.

Fiscal policy is any changes the government makes to the national budget to influence a nation's economy. "An essential purpose of this Financial Report is to help American citizens understand the current fiscal policy and the importance and magnitude of policy reforms essential to make it sustainable. A sustainable fiscal policy is explained as the debt held by the public to Gross Domestic Product which is either stable or declining over the long term" (Bureau of the fiscal service). The approach to economic policy in the United States was rather laissez-faire until the Great Depression. The government tried to stay away from economic matters as much as possible and hoped that a balanced budget would be maintained. Prior to the Great Depression, the economy did have economic downturns and some were quite severe. However, the economy tended to self-correct so the laissez faire approach to the economy tended to work.

President Franklin D. Roosevelt first instituted fiscal policies in the United States in The New Deal. The first experiments did not prove to be very effective, but that was in part because the Great Depression had already lowered the expectations of business so drastically.