Income tax


An income tax is a tax imposed on individuals or entities in respect of the income or profits earned by them. 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. 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. Most jurisdictions exempt local charitable organizations from tax. Income from investments may be taxed at different 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.
Taxable income of taxpayers' resident in the jurisdiction is generally total income less income producing expenses and other deductions. Generally, only net gain from the sale of property, including goods held for sale, is included in income. The income of a corporation's shareholders usually includes distributions of profits from the corporation. Deductions typically include all income-producing or business expenses including an allowance for recovery of costs of business assets. Many jurisdictions allow notional deductions for individuals and may allow deduction of some personal expenses. Most jurisdictions either do not tax income earned outside the jurisdiction or allow a credit for taxes paid to other jurisdictions on such income. Nonresidents are taxed only on certain types of income from sources within the jurisdictions, with few exceptions.
Most jurisdictions require self-assessment of the tax and require payers of some types of income to withhold tax from those payments. Advance payments of tax by taxpayers may be required. Taxpayers not timely paying tax owed are generally subject to significant penalties, which may include jail-time for individuals.
Taxable income of taxpayers resident in the jurisdiction is generally total income less income producing expenses and other deductions. Generally, only net gain from the sale of property, including goods held for sale, is included in income. The income of a corporation's shareholders usually includes distributions of profits from the corporation. Deductions typically include all income-producing or business expenses including an allowance for recovery of costs of business assets. Many jurisdictions allow notional deductions for individuals and may allow deduction of some personal expenses. Most jurisdictions either do not tax income earned outside the jurisdiction or allow a credit for taxes paid to other jurisdictions on such income. Nonresidents are taxed only on certain types of income from sources within the jurisdictions, with few exceptions.

History

The concept of taxing income is a modern innovation and presupposes several things: a money economy, reasonably accurate accounts, a common understanding of receipts, expenses and profits, and an orderly society with reliable records.
For most of the history of civilization, these preconditions did not exist, and taxes were based on other factors. Taxes on wealth, social position, and ownership of the means of production were all common. Practices such as tithing, or an offering of first fruits, existed from ancient times, and can be regarded as a precursor of the income tax, but they lacked precision and certainly were not based on a concept of net increase.

Early examples

In 9 CE, Emperor Wang Mang of the Xin dynasty established the first income tax through a 10% tax of net earnings from wild herb and fruit collection, fishing, shepherding, and various nonagricultural activities and forms of trading. People were obligated to report their taxes to the government and officials would audit these reports. The penalty for evading this tax was one year of hard labor and confiscation of the entirety of a person's property. Because it caused popular discontent, this income tax was abolished in 22 CE.
In the early days of the Roman Republic, public taxes consisted of modest assessments on owned wealth and property. The tax rate under normal circumstances was 1% and sometimes would climb as high as 3% in situations such as war. These modest taxes were levied against land, homes and other real estate, slaves, animals, personal items and monetary wealth. The more a person had in property, the more tax they paid. Taxes were collected from individuals.
One of the first recorded taxes on income was the Saladin tithe introduced by Henry II in 1188 to raise money for the Third Crusade. The tithe demanded that each layperson in England and Wales be taxed one tenth of their personal income and moveable property.
In 1641, Portugal introduced a personal income tax called the décima.

Modern era

United Kingdom

The inception date of the modern income tax is typically accepted as 1799, at the suggestion of Henry Beeke, the future Dean of Bristol.
This income tax was introduced into Great Britain by Prime Minister William Pitt the Younger in his budget of December 1798, to pay for weapons and equipment for the French Revolutionary War. Pitt's new graduated income tax began at a levy of 2 old pence in the pound on incomes over £60, and increased up to a maximum of 2 shillings in the pound on incomes of over £200. Pitt hoped that the new income tax would raise £10 million a year, but actual receipts for 1799 totalled only a little over £6 million.
Pitt's income tax was levied from 1799 to 1802, when it was abolished by Henry Addington during the Peace of Amiens. Addington had taken over as prime minister in 1801, after Pitt's resignation over Catholic Emancipation. The income tax was reintroduced by Addington in 1803 when hostilities with France recommenced, but it was again abolished in 1816, one year after the Battle of Waterloo. Opponents of the tax, who thought it should only be used to finance wars, wanted all records of the tax destroyed along with its repeal. Records were publicly burned by the Chancellor of the Exchequer, but copies were retained in the basement of the tax court.
Income tax was reintroduced by Sir Robert Peel by the Income Tax Act 1842. Peel, as a Conservative, had opposed income tax in the 1841 general election, but a growing budget deficit required a new source of funds. The new income tax, based on Addington's model, was imposed on incomes above £150. Although this measure was initially intended to be temporary, it soon became a fixture of the British taxation system.
A committee was formed in 1851 under Joseph Hume to investigate the matter, but failed to reach a clear recommendation. Despite the vociferous objection, William Gladstone, Chancellor of the Exchequer from 1852, kept the progressive income tax, and extended it to cover the costs of the Crimean War. By the 1860s, the progressive tax had become a grudgingly accepted element of the United Kingdom fiscal system.

United States

The US federal government imposed the first personal income tax on August 5, 1861, to help pay for its war effort in the American Civil War . This tax was repealed and replaced by another income tax in 1862. It was only in 1894 that the first peacetime income tax was passed through the Wilson-Gorman tariff. The rate was 2% on income over $4000, which meant fewer than 10% of households would pay any. The purpose of the income tax was to make up for revenue that would be lost by tariff reductions. The US Supreme Court ruled the income tax unconstitutional, the 10th amendment forbidding any powers not expressed in the US Constitution, and there being no power to impose any other than a direct tax by apportionment.
In 1913, the Sixteenth Amendment to the United States Constitution cleared the unconstitutionality obstacle which previously had not allowed for the implementation of a federal income tax before 1913 in the United States. In fiscal year 1918, annual internal revenue collections for the first time passed the billion-dollar mark, rising to $5.4 billion by 1920. The amount of income collected via income tax has varied dramatically, from 1% for the lowest bracket in the early days of US income tax to taxation rates of over 90% for the highest bracket during World War II.

Timeline of introduction of income tax by country

  • 1799–1802:
  • 1803–1816:
  • 1840:
  • 1842:
  • 1860:
  • 1861–1872:
  • 1864:
  • 1872:
  • 1887:
  • 1891:, at the time a colony of the United Kingdom
  • 1894–95:
  • 1900:
  • 1903:,
  • 1908:
  • 1911:
  • 1913:
  • 1916:,
  • 1918:
  • 1919:
  • 1920:,
  • 1921:
  • 1924:,
  • 1932:,
  • 1934:
  • 1937:
  • 1942:
  • 1979:
  • 2007:

    Common principles

While tax rules vary widely, certain basic principles are common to most income tax systems. Tax systems in Canada, China, Germany, Singapore, the United Kingdom, and the United States, among others, follow most of the principles outlined below. Some tax systems, such as India, may have significant differences from the principles outlined below. Most references below are examples; see specific articles by jurisdiction.

Taxpayers and rates

Individuals are often taxed at different rates than corporations. Individuals include only human beings. Tax systems in countries other than the US treat an entity as a corporation only if it is legally organized as a corporation. Estates and trusts are usually subject to special tax provisions. Other taxable entities are generally treated as partnerships. In the US, many kinds of entities may elect to be treated as a corporation or a partnership. Partners of partnerships are treated as having income, deductions, and credits equal to their shares of such partnership items.
Separate taxes are assessed against each taxpayer meeting certain minimum criteria. Many systems allow married individuals to request joint assessment. Many systems allow controlled groups of locally organized corporations to be jointly assessed.
Tax rates vary widely. Some systems impose higher rates on higher amounts of income. Tax rates schedules may vary for individuals based on marital status. In India on the other hand there is a slab rate system, where for income below INR 2.5 lakhs per annum the tax is zero percent, for those with their income in the slab rate of INR 2,50,001 to INR 5,00,000 the tax rate is 5%. In this way the rate goes up with each slab, reaching to 30% tax rate for those with income above INR 15,00,000.