The U.S. dollar maintains its position as the world's dominant reserve currency through an interlocking system of financial structures and policy frameworks built over decades. This primacy enables the United States to exert extraterritorial influence through financial sanctions and regulatory enforcement, as demonstrated by fines imposed on European banks for Iran-related transactions and restrictions placed on Russian oil companies. The system faces mounting pressure as major U.S. rivals including China and Russia, along with nations such as India and Brazil, actively pursue alternatives to reduce dependence on dollar-denominated transactions, while structural challenges including fiscal deficits and questions about Federal Reserve independence emerge domestically.
U.S. Dollar System Enables Extraterritorial Financial Enforcement
The dominance of the dollar in international trade and finance gives the United States the ability to exert its will far from U.S. shores, without firing a gun. This power is evident when the U.S. fines European banks for doing business with Iran or cuts off Russian oil companies from the mainstream financial system. The system has also fueled global demand for Treasury debt that allows the U.S. to borrow vast sums, especially in crises.
Structural Foundations Supporting Dollar Dominance
The dollar's primacy is based on an interlocking series of policy choices and structures built over decades — in some cases centuries. The eurodollar system allows the U.S. government to tolerate and even encourage global banks to create and circulate dollars outside the U.S. The Federal Reserve has backstopped that system in crises through swap lines with global central banks.
The U.S. has the largest and deepest market for safe government bonds in the world and an "open capital account," meaning international investors can legally move money in and out of U.S. investments. For countries looking to maintain financial reserves on a massive scale, it's practically the only game in town. The U.S. has long been an outsized global importer and steward of the world's most powerful military, so for other countries, using dollars for trade has come with convenience and security.
JPMorgan CEO Jamie Dimon spoke at the Reagan National Economic Forum last month, stating: "If you could only put all your money in one country, which would it be? Well, there's only one that's protected by the Atlantic and the Pacific, the United States military, the rule of law."
Fiscal Deficits and Weaponization Concerns Challenge Dollar System
Some of the underpinnings of U.S. dollar dominance are coming under question. Sky-high U.S. fiscal deficits mean the world is being inundated with Treasury debt, the political independence of the Federal Reserve is under question, and many in the Trump administration see the costs of maintaining dollar dominance as a burden for Americans.
The U.S. has used the threat of cutting off access to the dollar-based global financial system as an increasingly all-purpose weapon for economic warfare. That means major U.S. rivals (China, Russia) and frenemies (India, Brazil) are eager for dollar alternatives.
Rival Nations Lack Capacity to Build Dollar Alternatives
So far, other leading powers seem to lack the willingness or ability to build alternatives. European nations have been unable to develop a unified sovereign debt market of the sort that has existed in the U.S. for two centuries. The Chinese are reluctant to open their capital account, with the loss of control that would come with the free flow of capital into and out of the nation.
China has explored swap lines with central banks to encourage use of the renminbi abroad, but other countries see those as coming with even more geopolitical strings attached than the dollar does. It's doubly hard to imagine the Chinese making peace with other nations' banks consistently supplying the world with Chinese currency, as happens with eurodollars.
Network effects are powerful things. Everybody uses dollars because everybody else uses dollars.
Brendan Greeley, author of "The Almighty Dollar: 500 Years of the World's Most Powerful Money," a new history of the greenback, stated: "I don't see anything that could replace the dollar system. I think the dollar could outlive the United States, and I'm not in any way predicting the end of the United States."
The role of the U.S. dollar in the world is secure for now, much as America's rivals might not like the status quo. But global angst is simmering, and as the Dutch and British learned long ago, no dominant currency is forever.
FAQ
What mechanisms allow the U.S. dollar to exert extraterritorial power?
The dominance of the dollar in international trade and finance gives the United States the ability to exert its will far from U.S. shores through financial enforcement. This power is evident when the U.S. fines European banks for doing business with Iran or cuts off Russian oil companies from the mainstream financial system.
Why are rival nations unable to create alternatives to the dollar system?
European nations have been unable to develop a unified sovereign debt market of the sort that has existed in the U.S. for two centuries. The Chinese are reluctant to open their capital account, with the loss of control that would come with the free flow of capital into and out of the nation. China has explored swap lines with central banks to encourage use of the renminbi abroad, but other countries see those as coming with even more geopolitical strings attached than the dollar does.
What threats does the U.S. dollar system currently face?
Sky-high U.S. fiscal deficits mean the world is being inundated with Treasury debt, the political independence of the Federal Reserve is under question, and many in the Trump administration see the costs of maintaining dollar dominance as a burden for Americans. The U.S. has used the threat of cutting off access to the dollar-based global financial system as an increasingly all-purpose weapon for economic warfare, prompting major U.S. rivals (China, Russia) and frenemies (India, Brazil) to seek dollar alternatives.
