The Income Shock

Here is a fact that surprises most people who follow the trade deficit: for decades, America earned more from its investments abroad than the rest of the world earned from investments in America — even though foreigners owned far more American assets than Americans owned abroad. This was the “exorbitant privilege” that French finance minister Valéry Giscard d’Estaing famously complained about in the 1960s — and it only got more exorbitant over time.

The trick was asset composition. American companies invested abroad in high-return assets: factories in Ireland, subsidiaries in Brazil, tech ventures in Asia — equities and direct investment that earned 8–12% returns. Foreigners, by contrast, parked their money in low-yield U.S. Treasury bonds, earning 1–3%. The result was a persistent income surplus: America earned more on its smaller pile of overseas assets than foreigners earned on their larger pile of American assets.

In 2000, the surplus was a modest +$15 billion. The zero-interest-rate era after 2008 supercharged it — Treasuries yielded almost nothing, while American multinationals like Apple, Google, and Coca-Cola continued earning rich returns abroad. By 2010, the surplus had reached +$170 billion. By 2017, it peaked at +$258 billion — a quarter-trillion-dollar cushion that absorbed more than a third of the goods deficit. Then it collapsed.

The collapse from +$258 billion (2017) to −$41 billion (2024) — a $299 billion reversal in seven years — has a clear and almost mechanical cause: interest rates.

The math is simple but devastating. Foreign governments, central banks, and investors hold over $8 trillion in U.S. Treasury securities and other American bonds. When the Federal Reserve held rates near zero (2009–2021), those holdings generated minimal income for foreign holders. A $7 trillion bond portfolio at 1.5% yields pays $105 billion. The same portfolio at 4.5% pays $315 billion. That $210 billion increase in payments flows directly out of the U.S. primary income balance.

Income receipts (what America earns abroad) actually grew impressively — from $995 billion in 2017 to $1.451 trillion in 2024, a 46% increase. American multinationals continued earning high returns on foreign subsidiaries. But income payments grew even faster — from $738 billion to $1.492 trillion, a doubling. Payments overtook receipts for the first time in 2024, crossing over at approximately $1.47 trillion.

The speed of the reversal is what makes this an “income shock” rather than a gradual drift. In 2017 the surplus was $258 billion. In 2022 it was still $119 billion. In 2023 it had shrunk to $53 billion. In 2024 it went negative. Four years to destroy a cushion that took two decades to build.

The income flip changes the math of America’s trade position in a way that no tariff or trade deal can address.

The current account now has no offset. From 2010 through 2019, the typical current account arithmetic was: goods deficit (−$750B to −$900B), services surplus (+$230B to +$270B), income surplus (+$180B to +$258B), resulting in a current account deficit of −$350B to −$500B. The income surplus absorbed 25–35% of the goods deficit. Now the arithmetic is: goods deficit (−$1,215B), services surplus (+$312B), income deficit (−$41B). Instead of absorbing a quarter of the goods gap, income is adding to it.

The problem is self-reinforcing. Running large current account deficits means America borrows from abroad. Borrowing from abroad increases foreign holdings of American assets. Higher foreign holdings mean larger income payments. Larger income payments worsen the current account. Which requires more borrowing. The income flip converts what was a stabilizing force (high returns on American assets abroad) into an accelerating force (rising interest payments on mounting debt). Economists call this “dynamic instability” — and it is the most dangerous development in the trade data since China’s WTO accession.