The 16th Amendment paved the way for capital gains taxes

The US officially adopted an income tax in 1913

The US first levied income taxes during the Civil War, but modern income taxes became an American fixture in 1913. Two years earlier, Congress passed the 16th Amendment to give the government the right to tax individuals' and businesses' income. The US still technically levies the same federal income tax now as it did then—though it's evolved.

Before the 16th Amendment, US tax law required direct taxes to be directly apportioned to a state's population

Due to these requirements, the federal government could not impose many direct taxes. Direct taxes include property and income taxes, whereas indirect taxes include duties and excises.

Capital gains taxes were first levied in the US in 1913

However, up until 1921, they were treated the same as ordinary income. Ever since then, rates have swung up and down.

On July 1, 1862, the agency now known as the Internal Revenue Service was established and named the Bureau of Internal Revenue

It was created to collect the first-ever US income tax, which was created to help pay for the Civil War. After gaining their independence from Britain, Americans were skeptical about giving the federal government absolute power to collect federal income taxes. As a result, early US tax laws dictated that direct taxes, like income taxes, had to be directly apportioned to a state's population. The nation went back and forth on its federal tax laws multiple times. For instance, in 1872, the income tax from the Civil War was repealed. But it was revived in 1894, and then repealed again in 1895. In 1913, Congress passed the 16th Amendment, giving Congress the power to levy income taxes on individuals and corporations without apportioning the burden among the states in line with population, once and for all.

Over a century ago, fewer than 1% of Americans paid income taxes—but the cost of World War II prompted the federal government to greatly expand the number of people required to pay income taxes.

Tariffs once fueled the US economy, historically serving as a primary source of revenue and a means to protect domestic industries.

How the federal income tax affected Prohibition

In the early 1900s, 30% to 40% of government tax revenue came from liquor, wine, and beer, a reliance that made Prohibition seem like a fiscal impossibility. But the passage of the federal income tax in 1913 changed the calculus, which helped allow the government to ban alcohol production and sales.

Why do long-term capital gains get taxed at preferential rates?

The 1920s defined capital gains as “unearned” taxable income—as opposed to “earned” income from jobs—and set into practice preferential tax rates for long-term capital gains that are hotly debated to this day. This historical review explores how voices in favor of preferential rates were arguing on behalf of greater market liquidity and incentive for investment activity. Learn more about the real history of capital gains tax rates here.

Revenue from tariffs goes to the US Treasury's general fund.

Since 1913, Americans have paid income taxes at varying rates

In the 2020s, the top marginal tax rate has floated around 37%, relatively lower than previous eras. Some have called for boosting the rate significantly to tax the highest earners.

The IRS—a division of the US Treasury Department that enforces the Internal Revenue Code, collects taxes, and enforces tax laws—has been a frequent victim of arson over the years.

Individual income taxes are the federal government's primary revenue source, see a tracker that breaks down where the rest of the budget comes from

The US government historically makes nearly half of its total revenue last year from individual income taxes. But the US makes also makes money from a variety of other sources, including Medicare taxes and corporate income taxes. However, the federal government has run a deficit since 2001—reaching a peak of $3.13T in 2020.

Some policymakers take issue with long-term capital gains being taxed at a preferential rate compared to income from paid work

The concept of taxing unrealized capital gains—when an asset’s value increases but has yet to be sold—has been increasingly debated. Other policymakers in recent years have supported lowering the highest long-term capital gains tax rate and are generally opposed to levying taxes on unrealized capital gains.

Death taxes have helped fund wars since the 1860s

Death taxes date back to 700 BCE and were used in Ancient Rome and Ancient Egypt. In the US, they've been used to finance wars since the Civil War, and have been levied on both the estate and beneficiary. The estate tax created during WWI to help finance war efforts is still in effect today.

Ratified in 1868, the 14th Amendment guaranteed citizenship to all people born in the United States and required states to provide equal legal protection to all.

See how the federal estate tax has changed in the 21st century

In 2001, the government passed an act to completely repeal the tax. It was overturned in 2010. In 2017, the government increased the exemption threshold so fewer people would have to pay into the tax. In 2025, the exemption threshold was permanently set to $15M.

The Tariff Act of 1789 was one of America's first acts.

Tax policy can have a direct impact on the national debt, with past presidents' changes to tax codes inflating the deficit.

See a timeline of the IRS's history, including the introduction of standard deductions and the digitization of the filing process

The Commissioner of Internal Revenue was created in 1862 to take over federal tax collection after the President enacted a temporary income tax. That agency eventually became today's Internal Revenue Service.

See a chart showing how US tariff revenue has grown in recent years.

Opponents of the federal estate tax began using the term 'death tax' in the 1940s to sway public opinion.

If the estate tax is repealed, more expensive alternatives might come in its place

The federal estate tax has been up for political debate for decades. Many want to get rid of it altogether. If repealed other tax options, like capital gains taxes, could have people paying more in taxes than before.

80% of Americans are bothered that some wealthy people don't pay their fair share of taxes

That's according to data from Pew Research Center. While most people are primarily taxed on their wages, many people in America's 1% derive much of their income from investments instead, which are often taxed at preferential capital gains rates. This structure was shaped by a series of legislative cuts that began in earnest with the 1978 Revenue Act and the 1981 Economic Recovery Tax Act.

The Constitution gives Congress sweeping control over the federal budget

Article I, Section 8's Spending Clause authorizes Congress to tax, pay debts, and promote the "common Defence and general Welfare," making it one of Congress's most powerful tools—and the constitutional foundation of federal budget control.

Learn how the US tax code works and why it's important

First published in 1926, the US Code is the official codification of federal statutes in the US. Title 26 of the US Code, for instance, lists all of the federal tax laws of the United States. A new edition is published every six years.

The Smoot-Hawley Tariff Act—which was passed during the Great Depression with the goal of reviving domestic industry—is among the most famous pieces of economic legislation in US history.

Short-term capital gains are gains on sales made in less than a year

In 2024, a single filer making anywhere between $200,001 and $243,725 per year would pay a 15% tax on long-term capital gains. But when it comes to short-term capital gains, they’d be taxed at the same rate as their regular income, which, in their case, is 32%.

The Budget and Accounting Act of 1921 created the modern federal budget

Before 1921, federal funding was fragmented and ad hoc. This article traces how inefficiency and postwar pressures led Congress to pass the Budget and Accounting Act, creating a standardized, centralized federal budgeting process.

Understanding the low corporate tax rate in the US

Corporate taxes, which make up roughly a third of the federal government's revenue, have been calculated using a flat 21% rate since the Tax Cuts & Jobs Act of 2017. The current rate is considered low both by historic standards (it averaged over 50% in the 1950s and 1960s) and compared to other countries.

The 13th Amendment permanently abolished slavery in the United States

Ratified in December 1865, the 13th Amendment outlawed slavery nationwide except as punishment for a crime. Southern states were required to ratify it under President Andrew Johnson's initial Reconstruction plan before regaining representation, though Congress later imposed stricter conditions.

Long- and short-term capital gains have different tax implications

Short-term gains (assets held for one year or less) are taxed like regular income, at rates up to 37%. Meanwhile, long-term gains (assets held over a year) are capped at 20%, offering significant savings for high earners.

The 15th Amendment granted Black men the right to vote nationwide

Ratified in 1870, the 15th Amendment prohibited federal and state governments from denying the right to vote based on race, color, or previous condition of servitude—enfranchising millions of Black men.

Study up on capital gains basics

Common capital gains tax tips include making sure you have money set aside for your capital gains tax burden and considering making estimated payments throughout the year.

How tax laws helped the federal government catch mob bosses during Prohibition

The IRS arrested top mob bosses during Prohibition after the Supreme Court ruled illegally-made income could be taxed. The IRS's biggest catch was Al Capone, who was charged with tax evasion and sentenced to 11 years in prison. But Capone wasn't the only bootlegger the IRS nabbed for tax evasion during this era.

Read why some states are considering imposing a flat tax rate that isn't adjusted by income

Wisconsin was the first US state to impose a state income tax, close in time to when the federal income tax went into effect. Many states followed suit, but nine states to this day still don't levy wage-related taxes.

The highest 2024 federal income tax bracket covered income upward of $731,201 for married couples filing jointly

To understand what you would owe on short-term capital gains and to visualize the favorability of long-term tax rates, you need to know how your traditional income is taxed at the federal level. A breakdown explores the different brackets for 2024, separated by filing status.

Tariffs are taxes levied on goods imported from abroad.

Americans between the ages of 45 and 55 pay nearly 30% of all income taxes, paying an average tax rate of around 17%.

The US has carried debt since 1791

After the Revolutionary War, the US owed $75M to nations like France. Debt builds when spending exceeds revenue, funding programs, wars, and economic recovery efforts. Most debt is domestic, like Social Security bonds, with foreign nations also holding a share.

The debate over estate taxes centers on wealth inequality

Since the modern federal estate tax was implemented, people have felt strongly about whether or not to keep it. Much of the debate boils down to equality: Proponents say the tax creates better income equality between the rich and poor, while opponents say it's an inequitable tax only placed on the wealthy.

The federal government's decision to pay off the states' Revolutionary War debts required a new tax, which sparked an armed rebellion. 

Early American citizenship was defined inconsistently by individual states.

How much tax you would owe on a $14M inheritance

“Death taxes” refer to estate and inheritance taxes—fees imposed on wealth transfers after someone passes. While the federal estate tax only applies to estates over $13.61 million in 2024, some states, like Washington, have their own taxes.

Why the rich don't pay taxes like you do

The system behind the US income tax isn't as straightforward as it looks. You earn money. Taxes get taken out. Case closed … right? Not exactly. In this episode of "1440 Explores," we break down how the US tax system actually works, from confusing deductions and misunderstood tax brackets to why the wealthiest Americans often end up paying a very different tax than everyone else.

In 2019, Congress passed the Secure Act to reform key aspects of the US tax code

Key Secure Act provisions included raising the age at which mandatory distributions take effect (to increase saving), allowing larger catch-up contributions for older individuals, and allowing employers to directly match contributions in a Roth 401(k).

See comparisons of different countries' taxation strategies

Taxes are a major revenue source for most countries, and how each government taxes citizens often reflects the country's economy. Developed countries tax at much higher rates than developing ones, and as a country grows its GDP, it also typically grows the proportional percentage of taxes it gains from its citizens.

Death taxes are placed on a deceased person's estate

Death taxes can include liquid cash, property, stocks, or other financial assets they owned. There are two main types of death taxes in the US: the estate tax and inheritance tax. Death taxes are levied at the federal and state level, but are targeted towards the rich.

Watch this video to learn how US tax brackets actually work.

Map of each state's largest tax revenue source

While America’s federal government primarily raises revenue through personal and corporate income taxes, it's a different story for each of the 50 states. This map shows how every state raises tax revenue for government activities. New York and California, for instance, raise most of that money through personal income taxes, whereas Texas and Florida have sales tax as their largest sources of tax revenue. Click here to see the map.

The highest inflation ever recorded in US history was estimated at 30% in 1778, just after the Revolutionary War.