How income taxes evolved from a funding tool for war into a crucial revenue source for the federal government

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.

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 For instance, in 1872, the income tax from the Civil War was repealed. But it was revived in 1894, and then repealed again in 1895.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.

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.

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.

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.

Charting where federal revenue comes from

About 50 percent of federal revenue comes from individual income taxes, 7 percent from corporate income taxes, and another 36 percent from payroll taxes that fund social insurance programs. See breakdown in charts here.

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.

How World War II affects your wallet today

The world's deadliest conflict also impacted social programs extensively, including ways that still affect your money today. World War II is responsible for the practice of employers withholding tax payments and sponsoring health insurance, as well as the norm of providing school lunches for the nation's schoolchildren. Watch this brief video to learn more.

Read why the information Americans have about our tax system might be misleading

For many, filing taxes can be complicated and overwhelming. Some argue that the tax system obscures certain aspects of the US tax code, making it difficult for taxpayers to accurately assess potential reforms.

Learn how tax brackets actually work

The US has a series of tax brackets which grow progressively larger based on the amount of income a taxpayer makes. Contrary to common belief, most people don't pay just one tax bracket, but all of them progressively until they reach their income.

Calculate how much of your tax dollars go to each federal program based on your income, filing status, and number of children

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.

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.

Hear why the IRS has been a frequent victim of arson

This podcast episode takes a lighthearted dive into the history of the IRS, from when the agency was founded and called the Bureau of Internal Revenue, to that one time it had to enforce a national ban on alcohol.

What are tariffs and how do they work?

Tariffs are taxes on imported goods paid by importing companies but typically passed on to consumers. They vary by country and product and, despite recent spikes, have historically accounted for less than 2% of federal revenue. Explore more with these data visualizations from USAFacts.

Financial advice from America’s founding fathers

Several of America's founding fathers—Benjamin Franklin, Thomas Jefferson, and Alexander Hamilton—espoused various financial platitudes during their lives. According to the financial publication Kiplinger, much of their advice holds up in modern times. This article rounds up a few wise words from the founding fathers (and even one first lady) about compound interest, taxes, and education. For money-management tips from America's early days, click here.

How to owe nothing on your federal tax return

Do you know you can avoid owing the IRS money come tax season by making changes to your W-4? For context, a W-4 is the form you fill out when you first start a new job. It tells your new company how much money to withhold from each paycheck for taxes. Find out how to avoid writing a check to the IRS each April in this article.

A rising number of Social Security beneficiaries are taxed on their Social Security income

That’s because while Social Security benefits increase with wages and inflation, the income limits for taxing those benefits stay the same and don’t adjust over time.

The enduring history of universal basic income

Distributing money to everyone is a radical idea provoking heated debates. The historical record shows pockets of civilizations exploring the notion around the world. The practice resembles what many prehistoric societies did as well. Trace the history of this income distribution approach with this fascinating overview.

The Civil War permanently strengthened federal power

The Civil War expanded federal power through emancipation, national military mobilization, and postwar civil rights laws, permanently strengthening the national government and shifting the balance of authority away from the states.

How America became a nation of gamblers

For thousands of years, humans have liked to gamble. What started as dice games and betting on chariot races became a way for states to generate revenue here in America. This article explores how states have been using gambling to pay for infrastructure and capital projects–and the cost it’s had on the citizens.

The causes of American rebellion were multifaceted

British taxes on colonists to pay for the French and Indian War were just one element. Thousands of miles of separation between London and the Colonies, expanding territories, a distinct Colonial identity, and political conflicts combined to prompt the Revolution.

The federal debt ceiling 101

The debt ceiling periodically takes center stage as Congress debates whether to increase or suspend this self-imposed limit on its borrowing authority. Learn the basics on this crucial feature of US fiscal policy with this Q&A.

A work-free retirement is a relatively recent development in human history

Though it looks different in other countries, economic historians trace retirement's rise in the US to a growth in personal income through pensions, GDP, and Social Security.

There have been many versions of US banknotes throughout history

From the Civil War to the present day, the US has gone through many, many versions of paper money (or “notes”). Some notes, like “demand notes,” were created to finance the Civil War. Others, like “treasury notes,” helped pay for silver.

Watch 'I'm Just a Bill' explain how a law gets made

First aired in 1976, "I'm Just a Bill" became a defining civics lesson for generations, using animation and humor to trace the legislative process and cement itself as a lasting piece of US political culture.

The US Constitution is widely regarded as the longest-standing written national constitution still in force—see how it has influenced rights worldwide.

Roughly 43 million US borrowers owe roughly $1.7T in student debt, the second-largest source of consumer debt behind mortgages.

Despite being favored by 87% of Americans, Congress does not have term limits.

The idea for the Federal Reserve was conceived in secret in 1910—with bankers donning duck hunt gear for disguise while traveling to a remote country club on Georgia's Jekyll Island

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

The original copy of the Declaration of Independence is not a pristine document, and even features a smudged anonymous handprint in the bottom left corner.

A century of Billboard issues documenting the evolution of popular music.

After the Boston Tea Party, colonists switched to coffee, which became the main morning drink for revolutionaries.

The rivalry between Alexander Hamilton and Thomas Jefferson centered on federalism—the question of how much power the federal government should hold relative to the states.

At the beginning of the 20th century, a group of young men ate standard American food—replete with food additives like borax and formaldehyde—as part of government research to better understand food safety.

Mark Twain spent decades feuding with the US Postal Service, convinced its costs and regulations were bureaucratic overreach.

The United States has had a tumultuous relationship with Cuba since its 1959 revolution, highlighted by a nuclear crisis and a decades-long trade embargo.

How Amazon operates a 'flywheel' business model, a self-reinforcing cycle that drives continuous growth

Tattoos remain visible on your skin thanks to immune cells called macrophages

Discover the catastrophic consequences of a failure of the US electrical grid—something that is more likely than many Americans think.

The word 'jazz' evolved from 'jasm,' 19th-century American slang for 'energy'

Dozens of S&P 500 stocks, including Coca-Cola and Walmart—known as the dividend aristocrats—have increased dividends every year for 25 years

Art theft is the third-largest source of criminal revenues worldwide, thanks in part to the subjective nature of valuing a work of art.

Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.

The American cockroach is actually from Africa, an apparent hitchhiker aboard ships carrying enslaved people, with evidence suggesting the bug may have arrived in the New World as early as the 1600s.

The concept of phantom limbs, the perception that amputated limbs are still present, dates back to a French military surgeon in the 16th century.

Stanford built a Google Maps for the Roman Empire, revealing how much it cost to travel in the ancient world

Pure water does not conduct electricity because this flow of energy requires the movement of charged particles, and water is a neutral molecule.