The history of taxes in America runs from colonial stamp duties that helped ignite a revolution to a 2026 federal system built on seven income tax brackets, payroll taxes for Social Security and Medicare, a 21 percent corporate rate, and a $15 million estate tax exemption. Between those two points sit a civil war, two world wars, a constitutional amendment, a Great Depression, and a long series of reforms that turned taxation from a narrow tool aimed at trade and vice into something that reaches nearly every paycheck and estate in the country.
Colonial Stamp Duties and the Founding-Era Tariff
Before there was a United States, there was a tax fight. Parliament passed the Stamp Act on March 22, 1765, requiring colonists to pay duties on legal documents, newspapers, pamphlets, playing cards, and dice. Unlike earlier tariffs on imported goods, the Stamp Act taxed items produced and used within the colonies, and colonists treated it as a direct assault on their autonomy. “No taxation without representation” became the rallying cry for a resistance that eventually escalated into armed revolution.1U.S. National Park Service. Britain Begins Taxing the Colonies: The Sugar and Stamp Acts
After independence, the framers wrote a revenue power directly into the Constitution. Article I, Section 8 granted Congress the power to lay and collect taxes, duties, and excises to pay debts and provide for the common defense and general welfare.2Constitution Annotated. Overview of Taxing Clause In practice, that meant tariffs. From 1789 to 1862, customs duties supplied nearly all federal revenue, making the tariff the defining economic policy tool of the early republic.3U.S. International Trade Commission. Before the U.S. Tariff Commission: Congressional Efforts to Obtain Statistics and Analysis for Tariff-setting
The Whiskey Rebellion and the First Internal Tax
The federal government’s first move beyond the tariff came in 1791, when Congress passed an excise tax on distilled spirits to help pay down Revolutionary War debts that the new government had assumed from the states.4Alcohol and Tobacco Tax and Trade Bureau. The Whiskey Rebellion Frontier farmers who relied on whiskey as both currency and livelihood saw the tax as the same overreach they had fought a revolution to escape. The Whiskey Rebellion of 1794 pushed President Washington to send militia into western Pennsylvania. The rebellion collapsed, and with it went any doubt that the federal government could enforce domestic tax laws.
The Civil War Introduces the Income Tax
Tariffs and excises kept Washington funded for seventy years. That model broke the moment the country went to war with itself. The Revenue Act of 1861 imposed a flat three percent tax on annual incomes exceeding $800, but it lacked real enforcement machinery and raised little money.5United States Senate. The Civil War: The Senate’s Story
Congress got serious the following year. The Revenue Act of 1862 created the Bureau of Internal Revenue and imposed the nation’s first graduated income tax: three percent on incomes between $600 and $10,000, five percent above that.6Internal Revenue Service. Historical Highlights of the IRS Once the war ended and debts came under control, the political appetite for taxing earnings vanished. Congress repealed the income tax in 1872.7National Archives. 16th Amendment to the U.S. Constitution: Federal Income Tax For the next four decades, roughly 90 percent of federal revenue came from taxes on liquor, beer, wine, and tobacco.
Pollock and the Sixteenth Amendment
When Congress tried to revive the income tax 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 under the Constitution and therefore had to be divided among the states in proportion to their populations. Because the 1894 law made no such apportionment, the entire income tax scheme was struck down.8Justia. Pollock v. Farmers’ Loan and Trust Co., 157 U.S. 429 (1895)
Getting around Pollock required amending the Constitution. The Sixteenth Amendment, ratified in February 1913, gave Congress the power “to lay and collect taxes on incomes, from whatever source derived, without apportionment among the several States, and without regard to any census or enumeration.”9Congress.gov. U.S. Constitution – Sixteenth Amendment Congress moved quickly. The Revenue Act of 1913, signed that October, imposed a one percent normal tax on net incomes above $3,000, with a surtax rising to six percent on the highest earners, for a combined top rate of seven percent. At those thresholds, less than one percent of the population owed anything. The same law slashed tariff rates. For the first time, the federal government intended to fund itself primarily through taxes on income rather than trade.
World War I Sends Rates Soaring
The income tax had barely been established before world war transformed it. In 1916 the top combined rate stood at 15 percent. Within two years Congress pushed it to 67 percent in 1917 and then to 77 percent in 1918 to finance mobilization.10U.S. Department of the Treasury. The Individual Alternative Minimum Tax The tax base widened at the same time, as exemption thresholds dropped and more Americans filed for the first time. Rates came back down through the 1920s as wartime debts shrank, but the pattern was fixed: in a national emergency, Congress would use the income tax as a lever.
Capital Gains Get Their Own Lane
From 1913 through 1921, profits from selling stocks and real estate were taxed at the same rates as wages. The Revenue Act of 1921 changed that, creating a preferential rate of 12.5 percent on gains from assets held at least two years. The principle of taxing investment income differently from ordinary income has survived nearly every reform since.
Social Security and the Rise of Payroll Taxes
The Great Depression exposed a gap that income taxes alone could not fill. Millions of elderly Americans had no savings and no safety net. The Social Security Act of 1935 answered with a new kind of federal tax tied to a specific benefit. Starting in 1937, employees and employers each paid one percent on the first $3,000 of wages, for a combined rate of two percent.11Social Security Administration. Social Security Act of 1935
The system has grown enormously. Medicare arrived in 1965 through the Social Security Amendments Act, layering a hospital insurance tax on top of the retirement tax.12National Archives. Medicare and Medicaid Act For 2026, the Social Security portion takes 6.2 percent from each side on wages up to $184,500, and Medicare adds 1.45 percent with no cap. Self-employed workers pay both halves, giving them a 12.4 percent Social Security rate. A 0.9 percent additional Medicare surtax hits earnings above $200,000.13Social Security Administration. Contribution and Benefit Base Payroll taxes now rival the income tax as a source of federal revenue.
World War II Turns the Income Tax Universal
If the income tax was born during the Civil War and legalized by the Sixteenth Amendment, it became a truly universal obligation during World War II. Before the war, roughly five percent of American workers paid income tax. The Revenue Act of 1942 changed that almost overnight, slashing personal exemptions and imposing a five percent “Victory Tax” on individual incomes over $624. By the war’s end, about 75 percent of the workforce owed federal income tax.14U.S. Department of Labor. The Revenue Act of 1942
Collecting from tens of millions of new filers created a logistical problem. The Current Tax Payment Act of 1943 solved it by requiring employers to withhold income taxes from paychecks and send the money to the Treasury on a regular schedule. Before withholding, taxpayers were expected to save through the year and pay a lump sum at filing. Automatic paycheck deductions made compliance nearly effortless and gave the government a steady flow of cash.
Top marginal rates reached 94 percent on taxable income over $200,000 in 1944. Very few taxpayers actually paid that rate on the bulk of their income, but the number reflected a wartime consensus that extreme wealth should bear extreme sacrifice. More consequentially, the millions of ordinary workers who started filing during the 1940s never stopped. The wartime expansion became permanent.
Estate and Gift Taxes
The federal government has taxed wealth transfers at death, off and on, since the late 1700s, but the modern estate tax dates to 1916. The Revenue Act of 1916 imposed a tax starting at one percent on estates exceeding $50,000 and rising to a top rate of 10 percent on net estates above $5 million. Congress has repeatedly adjusted the exemption and rate since. For 2026, the federal exemption is $15 million per individual, allowing a married couple to shield up to $30 million. The top rate above the exemption is 40 percent. About 17 states and the District of Columbia impose their own estate or inheritance taxes, often with much lower thresholds.
The Alternative Minimum Tax
In 1969, the Treasury Department disclosed that 155 individuals with incomes over $200,000 had paid zero federal income tax by stacking deductions and exclusions. Public reaction pushed Congress to create what was originally called the “minimum tax,” designed to keep high-income taxpayers from wiping out their bill through legal deductions.10U.S. Department of the Treasury. The Individual Alternative Minimum Tax
Today’s Alternative Minimum Tax runs a parallel calculation alongside the regular income tax, disallowing certain deductions and credits. You pay whichever amount is higher. For 2026, the AMT exemption is $89,300 for single filers and $139,500 for married couples filing jointly, phasing out at higher income levels.15Tax Foundation. 2026 Tax Brackets and Federal Income Tax Rates Because its thresholds were not originally indexed for inflation, the AMT crept far down the income scale over the decades. Congress made the inflation adjustments permanent starting in 2013, narrowing its reach.
Major Postwar Reforms
The Tax Reform Act of 1986
The Tax Reform Act of 1986 was one of the most sweeping overhauls in American tax history. It cut the top individual rate from 50 percent to 28 percent and compressed the bracket structure to just two rates covering a broader range of incomes.16Internal Revenue Service. Understanding Taxes – Tax Reform in the 1960s and 1980s To pay for the lower rates, Congress eliminated or curtailed dozens of deductions and loopholes. The philosophy was straightforward: lower rates on a broader base would produce similar revenue while reducing the incentive to shelter income.
The Earned Income Tax Credit
Not every reform was about rates. The Earned Income Tax Credit, introduced by the Tax Reduction Act of 1975, was designed to offset payroll taxes for low-income working families and encourage employment over welfare.17Internal Revenue Service. 50 Years of Earned Income Tax Credit Because it is refundable, the EITC can produce a net payment from the government even when the filer owes no income tax. Congress has expanded it several times, and it now functions as one of the largest anti-poverty programs in the federal budget.
The Tax Cuts and Jobs Act of 2017
The Tax Cuts and Jobs Act, signed in December 2017, made the largest changes to the code in three decades. It permanently cut the top corporate rate from 35 percent to a flat 21 percent. For individuals, it lowered rates across all seven brackets and nearly doubled the standard deduction, while suspending the personal exemption and capping the state and local tax deduction at $10,000.18Legal Information Institute. Tax Cuts and Jobs Act of 2017
Most of the TCJA’s individual provisions were set to expire after December 31, 2025, which would have reverted rates to their pre-2017 levels topping out at 39.6 percent and cut the standard deduction roughly in half.19Congress.gov. Expiring Provisions in the Tax Cuts and Jobs Act (TCJA, P.L. 115-97) Congress prevented that reversion by passing the One Big Beautiful Bill Act in July 2025, which made the TCJA’s individual income tax structure permanent.15Tax Foundation. 2026 Tax Brackets and Federal Income Tax Rates
State and Local Taxes
The federal story is only part of the picture. States built their own tax systems in parallel. Wisconsin enacted the first modern state income tax in 1911, two years before the Sixteenth Amendment created the federal version. Today, a majority of states impose their own income taxes, with top marginal rates ranging from roughly 2.5 percent to over 13 percent, while eight states impose no personal income tax. Most states also levy a general sales tax, typically between about 4 and 7 percent, with additional local sales taxes layered on in many jurisdictions. Combined with the state estate and inheritance taxes noted above, the total tax burden on a family can vary sharply based on where they live.
The Federal Tax System in 2026
The system in place today rests on several pillars. The individual income tax uses seven brackets, with rates of 10, 12, 22, 24, 32, 35, and 37 percent.15Tax Foundation. 2026 Tax Brackets and Federal Income Tax Rates Payroll taxes fund Social Security at 6.2 percent on wages up to $184,500 and Medicare at 1.45 percent on all wages, plus the 0.9 percent surtax on high earners.13Social Security Administration. Contribution and Benefit Base Corporations pay a flat 21 percent. The estate tax exemption sits at $15 million per individual, with a 40 percent top rate above that threshold. It is a structure the founders would not recognize, built over two centuries out of wars, court rulings, economic crises, and reform bills, each responding to the problem in front of it.