Federal income tax began in 1861 as a temporary Civil War measure

The United States first imposed a federal income tax in 1861 to fund the Civil War. It was meant to be temporary — a way to raise money during the emergency. The tax applied only to people earning above a certain threshold, and rates were modest by modern standards. After the war ended in 1865, the tax continued for a few more years before Congress let it expire in 1872.

For the next 16 years, the federal government had no income tax at all. Revenue came from tariffs on imported goods, excise taxes, and other sources. This changed in 1894, when Congress tried to bring back an income tax during an economic downturn. The tax was small and affected only the wealthiest Americans — roughly the top 2 percent of earners.

Key Takeaways

  • The first federal income tax ran from 1861 to 1872 as a Civil War funding measure.
  • Congress reinstated income tax in 1894, but the Supreme Court struck it down in 1895 as unconstitutional.
  • The 16th Amendment, ratified in 1913, gave Congress the permanent legal power to tax income without apportioning it among states.
  • The modern federal income tax system has operated continuously since 1913, though rates and rules have changed many times.

Why the 1894 tax was thrown out

The 1894 income tax lasted only one year. 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 requirement that made an income tax impractical to administer.

This ruling blocked any federal income tax for the next 18 years. Congress could not simply pass a new law to override the Court's decision. Instead, the country needed a constitutional amendment to change the rules.

The 16th Amendment made permanent income tax possible

In 1909, President Theodore Roosevelt and Congress began pushing for a constitutional amendment to overturn the Supreme Court's ruling. The amendment was drafted, sent to the states, and ratified on February 3, 1913. The 16th Amendment states: "The Congress shall have power to collect taxes on incomes, from whatever source derived, without apportionment among the several States."

This single sentence removed the apportionment requirement and gave Congress clear authority to tax income. Just months after ratification, Congress passed the first permanent income tax law under the new amendment. The tax took effect on March 1, 1913, and has remained in place ever since, though rates, brackets, and rules have been revised many times.

How the early income tax worked

The 1913 income tax was very different from today's system. It applied only to the wealthiest Americans — people earning above $3,000 per year, which was roughly equivalent to $100,000 in today's dollars. The vast majority of workers paid nothing.

The initial tax rate was just 1 percent on income above the threshold. There was also a surtax on very high earners. Over time, especially during World War I and World War II, Congress raised rates significantly to fund military spending. By the 1940s, the top marginal rate exceeded 90 percent, and the tax had expanded to cover millions of middle-class workers.

Why the timing matters for understanding tax history

Knowing that federal income tax started in 1913 helps explain why older Americans sometimes talk about "before income tax" as a distinct era. For the first 137 years of the nation's existence, there was no permanent federal income tax. The shift to income taxation fundamentally changed how the federal government raised money and how much revenue it could collect.

The income tax also changed which Americans bore the tax burden. Early tariffs and excise taxes fell heavily on consumers and workers. Income tax, by contrast, could be designed to take a larger share from higher earners. This shift in the tax base has shaped debates about fairness and government funding ever since.

How income tax rates have changed since 1913

The federal income tax rate has never stayed the same for long. In 1913, the top rate was 7 percent. By 1918, during World War I, it had jumped to 77 percent. After the war, rates came down in the 1920s, then rose again during the Great Depression and World War II. The top rate hit 94 percent in 1944.

After World War II, rates gradually declined. In the 1950s and 1960s, the top rate was around 70 percent. The Tax Reform Act of 1986 lowered it to 28 percent. Since then, rates have moved up and down depending on which party controlled Congress and the presidency. Understanding this history shows that the current tax code is not fixed — it has always been subject to change through new legislation.

Frequently Asked Questions

Did people pay income tax before 1913?

Yes, but only during two periods. The Civil War income tax ran from 1861 to 1872. Congress tried again in 1894, but the Supreme Court struck it down in 1895. After that, there was no federal income tax until 1913.

Why did the Supreme Court say the 1894 income tax was unconstitutional?

The Court ruled that income tax was a "direct tax" that had to be apportioned among states based on population. This made it nearly impossible to administer fairly. The 16th Amendment in 1913 removed this requirement.

Has the income tax rate always been the same?

No. The rate was 1 percent in 1913, jumped to 77 percent during World War I, reached 94 percent in 1944, and has fluctuated since then based on legislation. Congress changes tax rates regularly.

Why did income tax expand to cover middle-class workers?

In 1913, only the wealthiest Americans paid income tax. During World War I and especially World War II, Congress needed more revenue and lowered the income threshold. By the 1940s, millions of middle-class workers were paying income tax for the first time.