President Trump’s Budget Includes A $2 Trillion Math Mistake
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This article originally appeared on Time. 

President Trump’s budget includes simple accounting error that adds up to a $2 trillion oversight.

Under the proposed budget released Tuesday, the Trump Administration’s proposed tax cuts would boost economic growth enough to pay for $1.3 trillion in spending by 2027. But the tax cuts are also supposed to be revenue-neutral, meaning that trillion dollars is already supposed to pay for the money lost from the tax cuts.

Former Treasury Secretary Lawrence Summers called the oversight an “elementary double count” and “a logical error of the kind that would justify failing a student in an introductory economics course” in an op-ed in the Washington Post.

The idea that the tax cuts would pay for anything already was criticized. Over the years, it’s been a reliable staple of Republican rhetoric about taxes that lowering the rates would lead to a boom in the economy that would offset the loss in revenue, but economists say the idea is often oversold.

According to the Committee for a Responsible Federal Budget, for Trump’s tax cuts to pay for themselves, the economy would have to grow at 4.5 percent over the next 10 years. That’s two and a half times the growth rate projected by the Congressional Budget Office.

So what’s the most likely result of Trump’s plan? The nonpartisan group projected that the tax cuts would cost the government between $3 and $7 trillion over the next decade.

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