Trump’s ‘idiotic’ and flawed tariff calculations stun economists
Waving a big chart as a prop in the White House Rose Garden, Donald Trump suggested his new tariff plan was simple: “Reciprocal – that means they do it to us, and we do it to them. Very simple. Can’t get simpler than that.”
Perhaps a bit too simple. The method used to calculate the most important numbers in international trade, politics and economics has left some of the world’s leading experts shocked.
For each country, the White House looked up its trade in goods deficit for 2024, then divided that by the total value of imports. Trump, to be “kind”, said he would, however, offer a discount, so halved that figure. The calculation was even distilled into a formula.
For countries without a large deficit, the White House applied a 10% baseline, ensuring tariffs would be applied regardless. This was the case for the UK, which the US Census Bureau reckons had an almost-$12bn surplus in 2024.
“[It is] quite an extraordinary calculation after months of work behind the scenes,” said Jim Reid, the global head of macro research at Deutsche Bank. “[It] didn’t add much confidence on there being an in-depth strategic implementation plan.”
For weeks, Washington had been talking about an in-depth policy exercise to establish figures based on a combination of tariff and non-tariff barriers to trade, as it perceived them to be; including alleged “currency manipulation”, local laws, regulations, and taxes such as VAT.
In itself that approach raised eyebrows with experts who said VAT was highly unusual to include; because it is a sales tax paid on domestically produced goods and foreign imports alike.
However, the White House appears to have confirmed it took a simplistic approach to making this judgment:
Reciprocal tariffs are calculated as the tariff rate necessary to balance bilateral trade deficits between the US and each of our trading partners. This calculation assumes that persistent trade deficits are due to a combination of tariff and non-tariff factors that prevent trade from balancing.
There are multiple problems with this – not least that it vastly oversimplifies the drivers of trade deficits. Trade deficits occur when a country buys more than it sells abroad. The US has run a deficit persistently since the 1970s. Typically trade deficits balance over time, as they create downward pressure on a country’s currency (as the result of demand for foreign currency, to buy imported goods, outstrips demand for domestic currency).
However, sitting atop the global reserve currency – used throughout the global financial system for payments and international trade – the US has managed to run larger trade deficits than other nations would be able to.
