S9 Ep23: Global imbalances redux

Three times since the 1970s, global imbalances have grown large. In the 1980s, the US trade deficit ballooned under Volcker's tight money and Reagan's tax cuts and military spending. In the 2000s, a global savings glut and then a US housing credit boom pushed the deficit to 6% of GDP. Today, the imbalances are back. The US current account deficit stood at 3.9% of GDP in 2025.

The policy medicine this time: tariffs.

Maurice Obstfeld of the Peterson Institute for International Economics and CEPR has written a chapter in the fourth Paris Report, published jointly by CEPR and Bruegel, examining that history, how policymakers responded, and what it can tell us about the effectiveness of policy remedies in 2026. He tell Tim Phillips that blaming foreigners misdiagnoses the problem if the US saves too little and invests heavily. The gap has to be financed from abroad. Good policy for the new global imbalances would requires three actors to move together: fiscal consolidation in the US, stronger consumption in China, and more investment in Europe. All three would benefit, none are close to doing it. The longer the can is kicked, Obstfeld warns, the greater the risk that the resolution arrives the way it always has: not through policy, but through crisis.

The report discussed in this series of episodes:

Rey, Hélène, Beatrice Weder di Mauro, and Jeromin Zettelmeyer (eds). 2026. The New Global Imbalances. Paris Report 4. CEPR Press and Bruegel. Free to download at cepr.org.

The chapter discussed in this episode:

Obstfeld, Maurice. 2026. "Global imbalances redux." In Rey, Weder di Mauro, and Zettelmeyer (eds), The New Global Imbalances. Paris Report 4. CEPR Press and Bruegel.

To cite this episode:

Phillips, Tim, and Maurice Obstfeld. 2026. “Global imballances redux”, VoxTalks Economics (podcast).

Assign this as extra listening. The citation above is formatted and ready for a reading list or VLE.

About Paris Report 4

The fourth Paris Report, The New Global Imbalances, is a joint publication of CEPR and Bruegel. It was edited by Hélène Rey (London Business School and CEPR), Beatrice Weder di Mauro (Geneva Graduate Institute and CEPR, and President of CEPR), and Jeromin Zettelmeyer (Bruegel and CEPR). The report examines how, in a high-debt and fragmented world, excess savings, rising surpluses, and rising deficits pose a risk to stability and undermine the global trading system. It is free to download at cepr.org.

About the guest

Maurice Obstfeld is Senior Fellow at the Peterson Institute for International Economics and a Research Fellow of CEPR. He served as Chief Economist of the International Monetary Fund from 2015 to 2018. His research spans international finance, exchange rate economics, and macroeconomic policy. He is a former member of the Council of Economic Advisers under President Obama.

Research cited in this episode

The Plaza Accord (1985) was a joint agreement between the US, West Germany, France, the United Kingdom, and Japan to intervene in foreign exchange markets to depreciate the US dollar. It was negotiated because a surging dollar, driven by Volcker's tight monetary policy and the Reagan fiscal expansion, had pushed the US current account deficit to then-unprecedented levels and created severe competitive pressure on US manufacturing. The accord moved the dollar, but did not resolve the underlying imbalances; those were corrected by German reunification and the Japanese asset bubble, which were not planned by anyone.

The Louvre Accord (1987) was a follow-up agreement among the same countries to stabilise the dollar once it had depreciated far enough. Obstfeld uses both episodes to illustrate that exchange rate agreements address the symptom, not the cause, and tend to sidestep the hard political decisions about fiscal policy.

The global savings glut hypothesis, associated with Ben Bernanke, holds that rising savings outside the US in the early 2000s, particularly from Asian economies building dollar reserves after the Asian financial crisis and from oil exporters, depressed global interest rates and drove capital into US assets. Obstfeld argues that from around 2002 onward the better explanation is US demand pulling capital in: loose Fed policy, the housing boom, subprime lending, and equity extraction from rising home values all drove US spending higher, and the current account deteriorated as the dollar fell rather than rose.

The One Big Beautiful Bill Act is US tax legislation that prevents the expiration of tax cuts that had been written into law, effectively delivering a tax reduction. Obstfeld points out that by lowering national saving it pushes the current account in the opposite direction to what the administration wants, partly undoing whatever modest deficit-reducing effect the tariffs might have through their revenue.

The Draghi report and the Letta report are European policy documents calling for deeper integration, more investment, improved competitiveness, and a completion of the EU's capital markets and banking unions. Obstfeld cites them as pointing in the right direction for reducing Europe's current account surplus, alongside the defence spending increases that European countries are now pursuing.

More VoxTalks Economics episodes

This episode is the first of two published simultaneously to mark the launch of Paris Report 4. In the second episode, Gilles Moëc, Chief Economist at AXA, explains why the US government is so keen to promote stablecoins and the risks they may pose to the financial system in the US and Europe.

For an interview with two of the report's editors, Beatrice Weder di Mauro and Jeromin Zettelmeyer, on the problem of global imbalances, listen to The Sound of Economics, Bruegel's podcast. Available at bruegel.org.