Alexandria Ocasio-Cortez's 70% Tax Plan: What All Americans Need to Know

Though she was only sworn into Congress three weeks ago, Representative Alexandria Ocasio-Cortez (D-NY) has already received national attention for her recent proposal of a sky-high 70% marginal tax rate on the highest earners in the United States.

At first, such a high tax rate may sound like a radical idea, but it's not unprecedented, and many Americans don't fully understand how it would affect them -- if at all. With that in mind, here's a rundown of Ocasio-Cortez's proposal, how it compares to previous tax policies, and what it could mean for your tax bill.

The dome of the U.S. Capitol Building with American flag waving in foreground
The dome of the U.S. Capitol Building with American flag waving in foreground

Image source: Getty Images.

What AOC is proposing

The short version is that Alexandria Ocasio-Cortez is proposing a new 70% tax bracket on income above $10 million. The increased tax on the wealthy would fund what Ocasio-Cortez calls a "Green New Deal," which would combat both climate change and economic inequality.

Unsurprisingly, this has attracted lots of attention from both ends of the political spectrum. Some agree with the proposal. Some think it's ludicrous and fear it would derail economic growth. Others think the rich should certainly pay more, but that the addition of a single super-high tax bracket isn't the best solution.

And, like most tax proposals put forth by politicians, this one is misunderstood by much of the American public.

This would be a marginal tax rate

The most common misunderstanding surrounding Ocasio-Cortez's plan is that she is proposing a 70% tax on all income. Nothing could be further from the truth.

Here's the one-minute version of how the U.S. income tax system works. We use a system of so-called marginal tax brackets. Under current law, there are seven 2019 tax brackets, with tax rates of 10%, 12%, 22%, 24%, 32%, 35%, and 37%.

The exact income thresholds of each tax bracket depend on your filing status, but if you're a married couple filing a joint tax return, here's how it would work in 2019. You would pay the lowest (10%) rate on your first $19,400 of taxable income, regardless of how much you made. Then, you'd pay the 12% rate on income between $19,400 and $78,950, while the other brackets would only apply to even higher portions of your income. The top rate (37%) would only be assessed on income above $612,350.

As an example, a married couple filing jointly with taxable income of $100,000 would fall in the 22% tax bracket for 2019. But they would pay 10% on the first $19,400, 12% on the next $59,550, and 22% on the remaining $21,050. Their total income tax would be $13,717, which is only 13.7% of their taxable income -- a full 8.3 percentage points lower than their marginal tax rate.