Tariffs may raise much less than White House projects, economists say

President Donald Trump says that tariffs will make the U.S. “rich.” But those riches will likely be far less than the White House expects, economists said.

The ultimate sum could have big ramifications for the U.S. economy, the nation’s debt and legislative negotiations over a tax-cut package, economists said.

White House trade adviser Peter Navarro on Sunday estimated tariffs would raise about $600 billion a year and $6 trillion over a decade. Auto tariffs would add another $100 billion a year, he said on “Fox News Sunday.”

Navarro made the projection as the U.S. plans to announce more tariffs against U.S. trading partners on Wednesday.

Economists expect the Trump administration’s tariff policy would generate a much lower amount of revenue than Navarro claims. Some project the total revenue would be less than half.

Roughly $600 billion to $700 billion a year “is not even in the realm of possibility,” said Mark Zandi, chief economist at Moody’s. “If you get to $100 billion to $200 billion, you’ll be pretty lucky.”

The White House declined to respond to a request for comment from CNBC about tariff revenue.

The White House is considering a 20% tariff on most imports, The Washington Post reported on Tuesday. President Trump floated this idea on the campaign trail. The Trump administration may ultimately opt for a different policy, like country-by-country tariffs based on each nation’s respective trade and non-trade barriers.

But a 20% tariff rate seems to align with Navarro’s revenue projections, economists said.

The U.S. imported about $3.3 trillion of goods in 2024. Applying a 20% tariff rate to all these imports would yield about $660 billion of annual revenue.

“That is almost certainly the mental math Peter Navarro is doing — and that mental math skips some crucial steps,” said Ernie Tedeschi, director of economics at the Yale Budget Lab and former chief economist at the White House Council of Economic Advisers during the Biden administration.

That’s because an accurate revenue estimate must account for the many economic impacts of tariffs in the U.S. and around the world, economists said. Those effects combine to reduce revenue, they said.

A 20% broad tariff would raise about $250 billion a year (or $2.5 trillion over a decade) when taking those effects into account, according to Tedeschi, citing a Yale Budget Lab analysis published Monday.  

There are ways to raise larger sums — but they would involve higher tariff rates,…