Yesterday, the Trump administration announced a series of tariffs it characterized as “reciprocal,” ranging from 10 percent to 50 percent and calculated for every country on Earth. The country-specific rates were made public at the press conference announcing the tariffs, as well as on White House social media.

However, despite the characterization of the tariffs as “reciprocal,” and despite the accompanying graphics referring to foreign “tariffs charged to the USA including currency manipulation and trade barriers,” the White House did not actually measure tariffs, currency manipulation, or trade barrier policies employed by other countries. Instead, it drew its estimates from something else entirely: bilateral trade deficits in goods.

Specifically, the White House documents appear to allege the “tariffs charged to the USA” are the greater of two different quantities: (a) 10 percent, and (b) the 2024 US trade deficit in goods with a given country, divided by the total quantity of US imports from that country.

Set aside, for now, the damage to economic growth these tariffs will cause, or the distributional impact of one of the largest tax hikes in US history. Other Tax Foundation work will cover that. (We currently estimate the cumulative amount of Trump tariffs at $3.1 trillion over 10 years, amounting to a roughly $2,100 tax increase per household in 2025 alone.)

The method for calculating other countries’ so-called “tariffs” for reciprocal purposes is nonsense. Bilateral deficits are not tariffs, nor are they meaningful anyway; trade in services is relevant; and tariffs cannot be used to target overall trade deficits. The overall result is an extraordinary policy error that will severely damage the economy while failing to reduce the US trade deficit.