Taxes began roughly 5,000 years ago in ancient Mesopotamia, where the earliest recorded levies took the form of compulsory labor and shares of the harvest rather than money. From those first obligations in the river valleys of the ancient Near East, taxation evolved through Greek civic duties, Roman customs duties, medieval tithes, and colonial tariffs before arriving at the modern U.S. income tax with its seven brackets running from 10 to 37 percent.
The First Taxes: Mesopotamia and Egypt
Mesopotamian civilizations called their earliest tax a “burden” — a requirement that heads of households give the government months of labor.1Almanac. Taxes in the Ancient World That labor went into harvesting state-owned fields, clearing silt from irrigation canals, and maintaining public works. There was no currency. People paid with their hands and their crops.
Ancient Egypt ran a parallel system called corvée, a compulsory labor tax that conscripted ordinary people for large-scale state projects. Modern scholarship indicates that corvée workers went to quarries, roads, and water systems rather than to the pyramids. Administrative oversight rested with scribes, who functioned as the world’s first tax officials. They used nilometers, structures that measured the annual flood height of the Nile, to predict the coming harvest and set each farmer’s obligation. A generous flood meant higher expected yields and a heavier tax; a low flood meant a lighter one. Grain collected under this system went into state-run granaries that served as both treasury and famine reserve.
Greek Levies and Roman Tax Farming
Classical Greece and Rome moved taxation away from pure labor and toward wealth, commerce, and civic duty.
Athens used two approaches. The eisphora was a direct tax imposed on citizens during wartime to fund weapons and the army; once fighting ended, citizens stopped paying and were sometimes reimbursed from war spoils.2TAXEDU. From Eisphora to Munera – A Brief History of Tax in Europe Alongside it ran the liturgy system, in which wealthy citizens personally funded and oversaw public works, warships, or religious festivals. The trierarchy, the most prestigious form, required a citizen to build, outfit, and sometimes command a warship. Enforcement came from civic honor rather than law. A procedure called antidosis let anyone assigned a liturgy challenge a wealthier citizen to take it on instead.
The Roman Republic went a different way. It relied on tax farming, auctioning off the right to collect provincial taxes to private contractors backed by wealthy investors. They paid Rome upfront and kept whatever surplus they could squeeze from taxpayers. It produced steady revenue and steady resentment. Augustus reformed the structure by putting government procurators in charge of collection, sharply reducing the role of private tax farmers for land taxes.3Internal Revenue Service. Historical Highlights of the IRS He also introduced a census that tied people to their land for tax purposes, imposed portoria (customs duties of roughly two to five percent at town gates and harbors), a one-percent auction tax, and a five-percent inheritance tax.
Feudal Dues and Church Tithes
When centralized Roman authority collapsed, taxation became local and personal. Peasants owed a share of their harvest and a set number of labor days to the lord whose estate they lived on, in exchange for protection. The church layered its own obligation on top: the tithe, a ten-percent levy on gross income and agricultural output, enforceable under both religious and secular law.
Military service also became monetized. Under scutage, a knight or landholder could pay the king a sum of money instead of serving personally in a campaign, and the crown used the payment to hire professional soldiers. That shift, from personal service to cash, laid the groundwork for centralized tax systems and the professional armies they funded.
Taxes and the American Founding
The question of who has the authority to tax became the defining issue of the American Revolution. Britain came out of the Seven Years War carrying a national debt near £140 million, and Parliament passed the Stamp Act on March 22, 1765, requiring colonists to buy an official stamp for legal documents, newspapers, pamphlets, and playing cards.4National Park Service. Britain Begins Taxing the Colonies – The Sugar and Stamp Acts The Tea Act of 1773 kept the conflict burning by giving the British East India Company a tea monopoly while preserving a tax the colonists rejected. With no representatives in Parliament, they answered with “no taxation without representation,” and the dispute helped trigger the war.
After independence, the federal government stayed away from direct personal taxes and funded itself mostly through tariffs. The Tariff Act of July 4, 1789, one of the first major laws passed by Congress, set up customs districts and import duties.5U.S. Customs and Border Protection. 1789 – First Congress Provides for Customs Administration Congress added excise taxes on specific goods, and a 1791 whiskey excise touched off the Whiskey Rebellion of 1794 in western Pennsylvania. President Washington sent militias to put it down, establishing that the federal government could enforce its tax laws.6Internal Revenue Service. Early Tax Issues
The First U.S. Income Tax
The federal government first taxed personal income during the Civil War. The Revenue Act of 1861 imposed a three-percent tax on incomes above $800 to fund the war.7United States Senate. The Revenue Act of 1861 A second act in 1862 refined it. Both were repealed after the war ended.
When Congress tried again in 1894, the Supreme Court blocked it. In Pollock v. Farmers’ Loan & Trust Co. (1895), the Court held that a tax on income from property was a “direct tax” the Constitution required to be apportioned among the states by population, which made a uniform national income tax effectively impossible.8Library of Congress. Historical Background on Sixteenth Amendment That obstacle stood for nearly two decades.
The 16th Amendment and the Permanent Income Tax
The Pollock barrier fell on February 3, 1913, when the 16th Amendment was ratified. It gave Congress the power “to lay and collect taxes on incomes, from whatever source derived, without apportionment among the several States.”9National Archives. 16th Amendment to the U.S. Constitution – Federal Income Tax (1913) Later that year, the Revenue Act of 1913 (also called the Underwood-Simmons Tariff Act) established the first permanent federal income tax. The starting rate was one percent on incomes above $3,000 for single filers ($4,000 for joint filers), rising to six percent on incomes above $500,000.3Internal Revenue Service. Historical Highlights of the IRS The tax reached about two percent of the population. The first Form 1040 appeared the same year.
Wars, Withholding, and Reform
Wars drove the biggest rate jumps of the twentieth century. The top marginal income tax rate went from 15 percent in 1916 to 67 percent in 1917 and 77 percent by 1918 as Congress paid for World War I. Rates eased in the 1920s and then surged during World War II, when the top marginal rate reached 94 percent on incomes above $200,000, the highest in U.S. history.
The way people paid also changed. Before 1943, most Americans got their full paychecks and settled up with a lump-sum payment the following year. The Current Tax Payment Act of 1943 required employers to withhold income taxes directly from wages and send the money to the government, creating the payroll withholding system still in use.3Internal Revenue Service. Historical Highlights of the IRS
The Tax Reform Act of 1986 was the biggest postwar overhaul. It collapsed 16 income tax brackets into two and cut the top individual rate from 50 percent to 28 percent. Later laws added brackets back, producing the seven-bracket structure in place today.
Payroll Taxes for Social Insurance
The Social Security Act of 1935 opened an entirely new category of federal taxation: payroll taxes dedicated to specific social insurance programs. The original rate was one percent each on employees and employers, applied to wages starting in 1937.10Social Security Administration. Social Security Act of 1935
Those rates have grown. For 2026, the combined employee payroll tax rate is 7.65 percent, made up of 6.2 percent for Social Security and 1.45 percent for Medicare.11Social Security Administration. 2026 Cost-of-Living Adjustment (COLA) Fact Sheet Employers pay a matching amount, and the self-employed pay the full 15.3 percent. The Social Security portion applies only to the first $184,500 in earnings for 2026; the Medicare portion has no cap.12Social Security Administration. Contribution and Benefit Base Individuals earning more than $200,000 ($250,000 for married couples filing jointly) pay an additional 0.9 percent Medicare surtax on earnings above those thresholds.
Federal Taxes Today
The Revenue Act of 1913 has grown into Title 26 of the United States Code, the Internal Revenue Code that governs federal taxation today.13Legal Information Institute (LII) – Cornell University. Title 26 – Internal Revenue Code For tax year 2026, the seven individual income tax brackets are:
- 10% on income up to $12,400 for single filers ($24,800 for married filing jointly)
- 12% on income over $12,400 ($24,800 jointly)
- 22% on income over $50,400 ($100,800 jointly)
- 24% on income over $105,700 ($211,400 jointly)
- 32% on income over $201,775 ($403,550 jointly)
- 35% on income over $256,225 ($512,450 jointly)
- 37% on income over $640,600 ($768,700 jointly)
The standard deduction for 2026 is $16,100 for single filers and $32,200 for married couples filing jointly.14Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill
The consequences for not paying remain serious. Tax evasion, defined as willfully attempting to defeat or evade a federal tax, is a felony. An individual convicted of tax evasion faces up to five years in prison, a fine of up to $250,000, or both, plus the costs of prosecution.15Office of the Law Revision Counsel. 26 U.S. Code 7201 – Attempt to Evade or Defeat Tax16Office of the Law Revision Counsel. 18 U.S. Code 3571 – Sentence of Fine The $250,000 figure comes from the general federal sentencing statute, which overrides the lower $100,000 amount written into the tax evasion statute itself.