Progressive tax in the context of "Luxury good"

A tax is a mandatory financial charge or levy imposed on an individual or legal entity by a governmental organization to support government spending and public expenditures collectively or to regulate and reduce negative externalities. Tax compliance refers to policy actions and individual behavior aimed at ensuring that taxpayers are paying the right amount of tax at the right time and securing the correct tax allowances and tax relief. The first known taxation occurred in Ancient Egypt around 3000–2800 BC. Taxes consist of direct or indirect taxes and may be paid in money or as labor equivalent.

All countries have a tax system in place to pay for public, common societal, or agreed national needs and for the functions of government. Some countries levy a flat percentage rate of taxation on personal annual income, but most scale taxes are progressive based on brackets of yearly income amounts. Most countries charge a tax on an individual's income and corporate income. Countries or sub-units often also impose wealth taxes, inheritance taxes, gift taxes, property taxes, sales taxes, use taxes, environmental taxes, payroll taxes, duties, or tariffs. It is also possible to levy a tax on tax, as with a gross receipts tax.

A flat tax (short for flat-rate tax) is a tax with a single rate on the taxable amount, after accounting for any deductions or exemptions from the tax base. It is not necessarily a fully proportional tax. Implementations are often progressive due to exemptions, or regressive in case of a maximum taxable amount. There are various tax systems that are labeled "flat tax" even though they are significantly different. The defining characteristic is the existence of only one tax rate other than zero, as opposed to multiple non-zero rates that vary depending on the amount subject to taxation.

A flat tax system is usually discussed in the context of an income tax, where progressivity is common, but it may also apply to taxes on consumption, property or transfers.

An income tax is a tax imposed on individuals or entities (taxpayers) in respect of the income or profits earned by them (commonly called taxable income). Income tax generally is computed as the product of a tax rate times the taxable income. Taxation rates may vary by type or characteristics of the taxpayer and the type of income.

The tax rate may increase as taxable income increases (referred to as graduated or progressive tax rates). The tax imposed on companies is usually known as corporate tax and is commonly levied at a flat rate. Individual income is often taxed at progressive rates where the tax rate applied to each additional unit of income increases (e.g., the first $10,000 of income taxed at 0%, the next $10,000 taxed at 1%, etc.). Most jurisdictions exempt local charitable organizations from tax. Income from investments may be taxed at different (generally lower) rates than other types of income. Credits of various sorts may be allowed that reduce tax. Some jurisdictions impose the higher of an income tax or a tax on an alternative base or measure of income.

Progressivism in the United States is a left-leaning political philosophy and reform movement. Into the 21st century, it advocates policies that are generally considered social democratic and part of the American Left. It has also expressed itself within center-right politics, such as New Nationalism and progressive conservatism. It reached its height early in the 20th century. Middle/working class and reformist in nature, it arose as a response to the vast changes brought by modernization, such as the growth of large corporations, pollution, and corruption in American politics. Historian Alonzo Hamby describes American progressivism as a "political movement that addresses ideas, impulses, and issues stemming from modernization of American society. Emerging at the end of the nineteenth century, it established much of the tone of American politics throughout the first half of the century."

Progressive economic policies incorporate the socioeconomic principles and views of social democracy and political progressivism. These views are often rooted in the concept of social justice and have the goal of improving the human condition through government regulation, social protections, and the maintenance of public goods. It is based on the idea that capitalist markets left to operate with limited government regulation are inherently unfair, favoring big business, large corporations, and the wealthy. Specific economic policies that are considered progressive include progressive taxes, income redistribution aimed at reducing inequalities of wealth, a comprehensive package of public services, universal health care, resisting involuntary unemployment, public education, social security, minimum wage laws, antitrust laws, legislation protecting labor rights, and the rights of labor unions. While the modern progressive movement may be characterized as largely secular in nature, the historical progressive movement was by comparison to a significant extent rooted in and energized by religion.

A land value tax (LVT) is a levy on the value of land without regard to buildings, personal property and other improvements upon it. Some economists favor LVT, arguing it does not cause economic inefficiency, and helps reduce economic inequality. A land value tax is a progressive tax, in that the tax burden falls on land owners, because land ownership is correlated with wealth and income. The land value tax has been referred to as "the perfect tax" and the economic efficiency of a land value tax has been accepted since the eighteenth century. Economists since Adam Smith and David Ricardo have advocated this tax because it does not hurt economic activity, and encourages development without subsidies.

LVT is associated with Henry George, whose ideology became known as Georgism. George argued that taxing the land value is the most logical source of public revenue because the supply of land is fixed and because public infrastructure improvements would be reflected in (and thus paid for by) increased land values.

Taxable income refers to the base upon which an income tax system imposes tax. In other words, the income over which the government imposed tax. Generally, it includes some or all items of income and is reduced by expenses and other deductions. The amounts included as income, expenses, and other deductions vary by country or system. Many systems provide that some types of income are not taxable (sometimes called non-assessable income) and some expenditures not deductible in computing taxable income. Some systems base tax on taxable income of the current period, and some on prior periods. Taxable income may refer to the income of any taxpayer, including individuals and corporations, as well as entities that themselves do not pay tax, such as partnerships, in which case it may be called “net profit”.

Most systems require that all income realized (or derived) be included in taxable income. Some systems provide tax exemption for some types of income. Many systems impose tax at different rates for differing types (e.g., capital gains or salaries) or levels of income (e.g., graduated rates). In the United States, gross income includes all income realized from whatever source but excludes particular tax-exempt items, such as municipal bond interest. In 2010, the United Kingdom and the United States both provided reduced rates of tax for capital gains and dividends.