Global economic imbalances have resurfaced as a central concern for policymakers, highlighting longstanding tensions in international trade and finance that have periodically triggered economic and political upheavals. The issue re-emerged prominently in the 2020s, roughly two decades after similar debates arose during the 1980s and 2000s.

These recurring discussions stem from two intertwined risks: the potential for rising protectionist sentiment and the threat of financial crises linked to current account imbalances. The 1980s saw protectionist pressures against Japan, coinciding with a financial crisis there. The 2000s were marked by a surge in trade tensions with China and culminated in the global financial crisis that triggered instability in the Western economies. Today, protectionism—especially in the United States—is evident, though a financial crisis has yet to materialize.

Economists express growing concern that if a crisis does occur, it will likely originate in the United States. Beatrice Weder di Mauro and Jeromin Zettelmeyer note that the U.S. holds a sizable and increasing stock of external liabilities, alongside concentrated investment exposures and stretched equity valuations—all factors contributing to heightened investor apprehension.

Examining the current global landscape reveals both continuities and changes. China, European creditor nations such as Germany, Japan, and oil exporters continue to run significant trade surpluses, with the U.S. remaining the primary deficit country. While China’s surplus relative to the global economy remains stable compared to 2008, its domestic economy has more than doubled in size, making the surplus smaller relative to its GDP. Notably, some European nations that once ran deficits now post modest surpluses. A significant shift lies in the composition of U.S. external deficits: unlike in 2008 when the private sector bore the brunt, today the U.S. government accounts for most borrowing, with net U.S. liabilities reaching about 24% of global output in 2024, up from 6% in 2008.

Protectionism remains a key risk, influenced by earlier “China shock” effects on U.S. politics and growing Chinese success in advanced manufacturing, particularly in Europe. Michael Pettis highlights the connection between trade surpluses, low household consumption, and high savings rates in countries like China. With domestic consumption low, surplus savings are exported abroad, often manifesting as large trade surpluses. China’s $1.2 trillion trade surplus last year reflects not only competitiveness but also deeper macroeconomic imbalances. Correspondingly, countries with trade deficits—most notably the U.S.—have absorbed these surpluses, with the U.S. considered the world’s safest borrower.

Policymakers face challenges in correcting these imbalances. There is a misconception that U.S. trade deficits can be resolved solely through trade or exchange rate policies; substantial macroeconomic adjustments, including reducing the U.S. government fiscal deficit (projected by the IMF at 7.5% of GDP in 2026), are also necessary. Conversely, blaming borrowers alone oversimplifies the situation, especially in the case of the U.S., where a unilateral fiscal tightening could trigger global economic slowdown. For sustainable adjustment, major economies such as China and the European Union must boost domestic demand to reduce reliance on external borrowing.

The traditional mercantilist view—that sustained trade surpluses are a pathway to lasting wealth—also faces scrutiny. Persistent surpluses risk debtor defaults and provoke resentment among deficit countries, who may see such imbalances as undermining their domestic industries and economic security. With China now running surpluses against Germany, tensions have broadened beyond the traditional U.S.-China dynamic.

Recommended policy responses include coordinated macroeconomic adjustments and reforms in trade and industrial strategies, as advocated by the IMF and outlined in recent analyses prepared for the G7 summit. However, the prospect of pre-emptive, multilateral action appears slim amid rising populism and nationalism. Consequently, experts suggest that preparing for a possible crisis has become a more realistic—if less desirable—course.