The federal income tax began in 1861 as a temporary Civil War measure

The United States did not have a federal income tax for most of its history. Before 1861, the federal government raised money through tariffs on imported goods and excise taxes on specific items like alcohol and tobacco. When the Civil War broke out, the government needed far more revenue than those sources could provide, so Congress passed the first federal income tax in August 1861. It was meant to last only as long as the war did.

That first income tax was small by modern standards—it taxed only incomes above $800 per year, which meant it affected fewer than 3 percent of American households. The rate started at 3 percent and rose during the war. Most people paid nothing. When the war ended in 1865, the income tax remained in place for another decade before Congress let it expire in 1872.

Key Takeaways

  • The federal income tax started in 1861 as a temporary measure to fund the Civil War, not as a permanent system.
  • The first income tax only affected people earning above $800 per year, which excluded the vast majority of Americans at that time.
  • After the Civil War ended, Congress kept the income tax for about seven more years before letting it expire in 1872.
  • The income tax returned in 1894 but was struck down by the Supreme Court in 1895 as unconstitutional.
  • The 16th Amendment, ratified in 1913, gave Congress the permanent legal power to tax income without apportioning it among the states.

Why the income tax disappeared after the Civil War

Once the Civil War ended, the federal government no longer needed the massive revenue boost. Tariffs and excise taxes were enough to run the peacetime government, and there was political resistance to keeping an income tax in place. The tax was unpopular among the wealthy, who bore most of the burden, and many lawmakers saw it as a temporary emergency measure that should end when the emergency did. Congress allowed the income tax to expire in 1872.

For the next two decades, the federal government relied almost entirely on tariffs. This worked during prosperous times, but when the economy slowed in the 1890s, tariff revenue fell sharply. Congress needed money again, so in 1894 it passed a new income tax—this time during peacetime, not war. This tax was different: it applied to a broader range of incomes and was meant to be permanent.

The Supreme Court blocked the income tax in 1895

The 1894 income tax never took effect. Wealthy people challenged it in court, and in 1895 the Supreme Court ruled in Pollock v. Farmers' Loan & Trust Co. that the income tax was unconstitutional. The Court said that a direct tax on income had to be apportioned among the states based on population—a rule that made an income tax practically impossible to administer. This decision blocked the income tax for eighteen years.

The ruling frustrated reformers and lawmakers who believed the wealthy should pay more in taxes. It also created a legal puzzle: the Constitution seemed to forbid the very tax that the government needed. The only way forward was to change the Constitution itself.

The 16th Amendment made the income tax permanent in 1913

In 1909, Congress proposed the 16th Amendment, which would give it the power to tax income without apportioning it among the states. The amendment was ratified on February 3, 1913, and when ready Congress passed a new income tax law. This time, the tax was constitutional and permanent.

The 1913 income tax was small at first. It applied only to incomes above $3,000 per year, which meant only about 3 percent of the population paid it. The top rate was 7 percent. Over the following decades, especially during World War I and World War II, the income tax expanded dramatically. More people became subject to it, and rates climbed much higher. By the 1950s, the income tax had become the largest source of federal revenue, a position it still holds today.

How the income tax changed American government

The shift from tariffs to income taxes changed how the federal government worked. Tariffs are paid by importers and passed along to consumers, so most people did not see them as a direct tax on themselves. Income taxes are different—they come straight from paychecks and are visible to workers. This made people more aware of how much they paid to the federal government and more interested in how that money was spent.

The income tax also gave the federal government a much larger and more reliable revenue stream. This allowed it to expand its programs and its reach into areas that had previously been handled by states or private organizations. The income tax became the engine that powered the modern federal government.

State income taxes came later than the federal tax

While the federal government was debating income taxes, some states moved ahead on their own. Wisconsin passed the first state income tax in 1911, two years before the 16th Amendment was ratified. Other states followed slowly over the next several decades, with adoption accelerating during the mid-twentieth century.

Today, most states have an income tax, though a few do not. Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, and Wyoming have no state income tax. New Hampshire taxes only investment income, not wages. State income taxes are separate from the federal income tax, and the rates and rules vary widely by state.

Frequently Asked Questions

Did people pay income taxes before 1861?

No. The federal government did not have an income tax before the Civil War. It raised money through tariffs on imported goods and excise taxes on specific products. Some states had property taxes and other local taxes, but there was no federal income tax.

Why did the Supreme Court strike down the 1894 income tax?

The Court ruled that an income tax was a "direct tax" that had to be apportioned among the states based on population. This rule made the tax impractical to collect. The 16th Amendment later overruled this decision by giving Congress the power to tax income without apportioning it.

What was the first income tax rate in 1913?

The 1913 income tax started at 1 percent on incomes above $3,000 per year and topped out at 7 percent on the highest incomes. Only about 3 percent of Americans paid it because most earned less than $3,000 annually. Rates rose sharply during World War I.

Do all states have income taxes?

No. Most states have an income tax, but nine states do not: Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, Wyoming, and New Hampshire (which taxes only investment income). State income taxes are separate from federal income tax and have their own rates and rules.