Every few years someone proposes raising the top income tax rate, and the debate immediately becomes ahistorical. People argue as if 37% is the natural order of things. It is not. For most of the twentieth century, the top federal rate sat far above anything we would recognize today, and the story of how it rose and fell is really the story of war, inflation, and changing ideas about what taxes are for.
The short version
| Era | Top marginal rate | Context |
|---|---|---|
| 1913 | 7% | 16th Amendment; fewer than 1% of Americans paid income tax |
| 1944–45 | 94% | World War II finance; the all-time peak |
| 1950s–1970s | 70–91% | Never dipped below 70% for three decades |
| 1982–86 | 50% | Reagan's 1981 tax cut; brackets indexed for inflation |
| 1988–90 | 28% | 1986 Tax Reform Act; lasted three years |
| 1993–2000 | 39.6% | Clinton-era rates |
| 2003–12 | 35% | Bush tax cuts |
| 2013–17 | 39.6% | Back up; plus 3.8% net investment income tax on top |
| 2018–today | 37% | Tax Cuts and Jobs Act |
1913: the tax almost nobody paid
The 16th Amendment, ratified in 1913, gave Congress the power to tax incomes directly. The first rates ran from 1% to 7%, with the top rate applying to income over $500,000, roughly $11 million in today's dollars. Fewer than one percent of the population owed anything at all. The income tax was a tax on the very rich, full stop.
War changed that quickly. World War I pushed the top rate to 77% by 1918. It fell back in the 1920s, then the Great Depression pushed it up again: 63% by 1932, as Congress scrambled for revenue in a collapsing economy.
1944: the 94% peak
1944–1945 · 94% on income over $200,000
To finance World War II, the top marginal rate hit 94%, the highest in American history. It combined a flat 3% "normal tax" with a graduated surtax topping out at 91%. That $200,000 threshold was real money: roughly $3.7 million in 2026 purchasing power, by one published estimate. At the bottom of the scale, the first $2,000 of taxable income faced a 23% rate, so the wartime structure was steep at both ends by modern standards. About a third of the population was paying income tax by then, up from almost nobody a generation earlier.
The crucial point, and the one most people miss when they hear "94%": it was a marginal rate. Only dollars earned above $200,000 were taxed at 94%. Everything below was taxed at the lower rates of the 24 brackets beneath it. Nobody paid 94% of their income. The number of people who even reached the top bracket was tiny, and the tax code of the era was thick with deductions that shrank taxable income before rates ever applied.
1950s to 1970s: the long plateau
Here is the fact that surprises modern readers most: after the war, the top rate did not come back down. Through the 1950s, 1960s, and 1970s, it never dipped below 70%, sitting at 91% through most of the 1950s and 70% through the 1960s and 70s. This was the era of the great postwar expansion, high union density, the interstate highway system, and the GI Bill. Economists still argue about how much the tax structure contributed to that growth versus other factors like America's unrivaled postwar industrial position, strong labor unions, and heavy public investment. What is not in dispute is that high top marginal rates and strong economic growth coexisted for decades.
The 1980s: the great unwinding
The Economic Recovery Tax Act of 1981 cut the top rate from 70% to 50% and, just as importantly, indexed the brackets for inflation. Before indexing, inflation silently pushed taxpayers into higher brackets every year, a phenomenon called bracket creep. Then the Tax Reform Act of 1986 did something dramatic: it broadened the tax base, killed off many deductions, and dropped the top rate to 28% starting in 1988. For a brief moment the U.S. nearly had a two-bracket system that its authors called a flat tax. The 28% promise lasted three years before deficits forced it back up.
1990s to today: the 35–40% corridor
Since 1993, the top rate has bounced in a narrow band: 39.6% in the 1990s, 35% from 2003 to 2012, back to 39.6% in 2013, and 37% since the 2017 Tax Cuts and Jobs Act. High earners also pay a 3.8% net investment income tax on top of the 37% for certain income, making the effective maximum federal rate on some income about 40.8%. Compared with the postwar decades, this is a low-tax era at the top, whatever one thinks of current policy.
What this history teaches about brackets
Three lessons I take from the data. First, the top rate is a policy choice, not a law of nature. It has been 7% and 94% within living memory of the same century. Second, marginal rates are not effective rates. The 94% era collected far less than 94% from anyone, because brackets are marginal and deductions were generous. Anyone citing historical top rates without that context is misleading you. Third, inflation adjustment matters enormously. Comparing a 1944 bracket to a 2026 bracket in nominal dollars is meaningless; $200,000 then is millions now. That is why our dataset includes every year in inflation-adjusted 2026 dollars alongside the nominal figures.
Frequently asked questions
- Did anyone actually pay 94%?
- Almost nobody reached the top bracket, since it started around $3.7 million in today's dollars, and generous deductions shrank taxable income before rates applied. The 94% rate was more a cap on reported income at the very top than a rate anyone paid on most of their earnings. Effective rates for the wealthiest were far lower than the statutory top rate.
- When did the federal income tax start?
- The modern income tax dates to the 16th Amendment, ratified in 1913, with the first returns filed in 1914. There was an earlier Civil War-era income tax, but it expired in 1872, and a 1894 attempt was struck down by the Supreme Court, which is why the amendment was needed.
- Why did rates stay so high for 30 years after WWII?
- A mix of reasons: paying down war debt, Cold War military spending, the political consensus behind the postwar welfare state, and the simple fact that the economy grew strongly enough that the rates did not obviously strangle growth. The intellectual case for cutting them did not win politically until 1981.
- What was bracket creep?
- Before 1981, tax brackets were not adjusted for inflation. As wages rose with inflation, taxpayers were pushed into higher brackets even though their real purchasing power had not grown. Indexing the brackets, introduced in the 1981 tax act, fixed this.