Somewhere in London, Singapore, Dubai, or the Cayman Islands, a bank records a US$10 million deposit in dollars.
There may be no physical dollars in its vault. The bank may not be incorporated in the United States. The depositor may never have visited America. The money may be lent to a commodity trader in Switzerland, used to finance machinery in Turkey, or transferred to an exporter in China.
Nevertheless, it is money denominated in US dollars.
This is the world of the Eurodollar: dollar deposits and dollar-denominated bank liabilities located outside the United States.
Despite the name, Eurodollars have nothing specifically to do with the euro. The market predates the euro currency by several decades. The prefix “Euro” originally referred to dollars held in European banks, particularly in London. Today, a dollar deposit in a Singapore bank can still be described as a Eurodollar.
The name is geographically outdated. The system is not.
It is one of the foundations of modern international finance; a decentralized network of banks, loans, deposits, bonds, foreign-exchange swaps, and payment relationships through which the world creates and uses dollars beyond America’s borders.
Imagine that a German manufacturer sells equipment to an American company and receives US$10 million.
The manufacturer could convert those dollars into euros. But perhaps it has dollar expenses, expects to purchase American components, or simply prefers to retain dollars. It deposits the money with a bank in London.
That London account is now a Eurodollar deposit.
The important detail is that the depositor owns a claim against the London bank, not against the Federal Reserve. The bank, in turn, may hold a dollar balance with another bank, lend the dollars to a client, invest them in dollar securities, or swap another currency into dollars.
The Federal Reserve formally defines Eurodollar deposits as US-dollar-denominated liabilities at banking offices outside the United States. The location of the banking office; not the nationality of the depositor or bank is the defining feature.
Now suppose the London bank lends US$8 million to a Brazilian commodity company.
The bank records a dollar loan as an asset and creates a corresponding dollar deposit for the borrower. As with domestic commercial banking, the loan can create new deposit money. The bank does not necessarily need to locate a suitcase containing US$8 million before making the loan.
It does, however, need to manage its dollar funding and settlement obligations.
It may attract dollar deposits, borrow dollars from another bank, issue dollar-denominated debt, obtain dollars through an FX swap, or use balances maintained with a correspondent bank. If the borrower sends money into the United States, some part of the transaction will ordinarily need to settle through banks with access to the American dollar-clearing system.
This produces a crucial distinction:
A dollar claim can be created outside the United States, but its credibility ultimately depends on the holder believing it can be converted into usable, transferable dollars when required.
That confidence is what holds the offshore dollar system together.
Why the market appeared
The precise origin of the Eurodollar has acquired an almost mythological quality.
One widely repeated account begins with the Soviet Union and communist China. During the early Cold War, they had reasons to avoid holding all their dollar earnings in American banks, where the balances might be frozen or seized. Dollars were therefore placed with banks outside the United States, including Soviet-controlled institutions in Europe.
An IMF history traces part of the postwar market to Chinese dollar earnings deposited with a Soviet bank in Paris, followed by broader Soviet and Chinese efforts to hold dollars outside American jurisdiction.
But geopolitics was only part of the story.
Postwar trade was expanding, and businesses around the world needed dollars because American goods, commodities, shipping, and finance were central to international commerce. London already possessed the legal expertise, banking relationships, time-zone advantage, and international outlook required to intermediate those dollars.
American regulations also helped.
For periods during the twentieth century, US rules constrained the interest banks could pay on certain domestic deposits and restricted aspects of international lending. Offshore banks were not always subject to the same requirements. They could sometimes pay more attractive deposit rates, lend at competitive rates, and operate with fewer reserve or regulatory constraints.
Money naturally migrated toward the less restrictive market.
By the 1960s, Eurodollars had developed into a large interbank funding system. By the 1970s, offshore banks were helping recycle the immense dollar revenues accumulated by oil-exporting countries after the oil-price shocks. Those “petrodollars” could be deposited with international banks and lent onward to governments and companies that needed financing.
The offshore dollar ceased to be an unusual Cold War workaround. It became infrastructure.
Why companies borrow a foreign currency
Why would a Turkish airline, Brazilian commodity exporter, or Asian property developer borrow dollars rather than its own currency?
Sometimes its revenues are already in dollars. Oil, metals, agricultural commodities, aircraft, and many international contracts are commonly priced in dollars. Matching dollar revenue with dollar debt can reduce exchange-rate risk.
Sometimes dollar funding is cheaper or more readily available than local-currency funding. International investors may be willing to lend in dollars but unwilling to hold the borrower’s domestic currency.
And sometimes borrowers make a dangerous assumption: that the exchange rate will remain stable.
Suppose a company earns Turkish lira but borrows US$100 million. If the lira loses half its value against the dollar, the company’s debt has effectively doubled in local-currency terms—even though the number written on the loan agreement has not changed.
This is the central hazard of foreign-currency debt.
A business may appear solvent when dollars are cheap and plentiful. When the exchange rate falls or dollar interest rates rise, the same balance sheet can become unsustainable.
The offshore system’s hidden elastic
The offshore dollar market makes the global supply of dollar credit more elastic.
If only American banks could provide dollar financing, the world’s access to dollars would be constrained by the balance sheets and regulations of institutions inside the United States. Offshore banks expand that capacity. They connect savers, corporations, governments, investors, and financial institutions across numerous jurisdictions.
The result has enormous economic benefits.
A Korean importer can finance purchases from Brazil in a currency both parties accept. A European bank can fund a dollar loan to a shipping company. A commodity trader can borrow against goods moving between two countries neither of which uses the dollar domestically.
The dollar becomes a financial language spoken by parties who may have no direct commercial relationship with the United States.
But elasticity creates fragility.
An offshore bank may lend dollars for five years while funding itself with deposits or wholesale borrowing that must be renewed every few weeks or months. As long as lenders remain confident, refinancing is routine. If confidence disappears, the bank must find replacement dollars immediately.
This is a dollar funding shortage: not necessarily a shortage of wealth, assets, or other currencies, but an inability to obtain the particular currency in which obligations must be paid.
The broader scale is substantial. At the end of March 2026, the BIS reported approximately US$14.7 trillion in dollar-denominated foreign-currency credit, combining bank lending and debt securities. Around 30% was owed by emerging-market and developing-economy borrowers.
Not all of this is technically a traditional Eurodollar deposit. It represents the larger offshore dollar-credit ecosystem that grew out of the same underlying demand.
When everyone wants dollars at once
The offshore dollar system works beautifully until every institution attempts to secure dollars simultaneously.
That happened during the 2008 financial crisis. European and other non-US banks had accumulated large portfolios of dollar assets but depended heavily on wholesale markets for dollar funding. As lenders retreated, these banks struggled to refinance themselves.
Many attempted to obtain dollars through foreign-exchange swaps.
In a simplified FX swap, a bank temporarily exchanges euros, pounds, yen, or another currency for dollars and agrees to reverse the transaction later at a predetermined exchange rate. The bank receives the dollars it needs without taking an open exchange-rate position.
But during a crisis, this becomes expensive. Everyone wants dollars; fewer institutions want to provide them. The price of borrowing dollars through the FX market rises above ordinary dollar interest rates.
The Federal Reserve responded by supplying dollars to selected foreign central banks through liquidity swap lines. The foreign central banks could then lend those dollars to banks in their own jurisdictions. Research from the New York Fed found that these facilities reduced strains in overseas dollar-funding markets.
The mechanism reveals something profound about the monetary system.
A European bank may create dollar credit offshore. A Brazilian company may borrow it. A Chinese exporter may receive it. But when global confidence collapses, the only institution capable of creating unquestioned dollars in unlimited quantities is the Federal Reserve.
The offshore system is decentralized in good times but gravitates back toward the American central bank in a crisis.
Are Eurodollars beyond US control?
Not entirely.
An offshore dollar account may sit outside the United States’ domestic deposit framework. It may not receive FDIC insurance, and the institution offering it may be regulated primarily by another country.
But offshore does not mean disconnected.
Banks still need correspondent relationships, dollar liquidity, access to clearing institutions, reliable counterparties, and the ability to move funds into dollar assets. Transactions touching the United States or US financial institutions may become subject to American sanctions, anti-money-laundering controls, or court orders.
This gives the United States an unusual form of monetary power.
America does not directly supervise every institution creating offshore dollar claims. Yet much of the system depends on access to American financial infrastructure and on confidence that offshore claims can ultimately be settled at par with onshore dollars.
It is influence through dependency rather than complete jurisdiction.
Eurodollars and stablecoins
Stablecoins are not Eurodollars in the conventional legal sense. One is generally a bank deposit; the other is a token issued on a blockchain.
But the comparison is revealing.
Both are privately issued claims denominated in dollars. Both can circulate outside the United States between people who may never interact with an American bank directly. Both depend on confidence in convertibility. And both can grow because users want the dollar’s stability and network effects without relying exclusively on the domestic US banking experience.
The essential question in each case is not simply, “Is this called a dollar?”
It is:
Who issued the claim, what supports it, where are the reserves or assets, and how reliably can it be redeemed at par?
A regulated bank deposit is supported by the bank’s balance sheet and applicable banking regime. A stablecoin depends on its issuer, reserve composition, custody arrangements, redemption mechanism, and banking partners.
A dollar label does not make every dollar claim equally safe.
Why this matters in cross-border payments
When a payment company says it can provide dollar accounts in multiple countries, the consultant should ask what those accounts actually represent.
Are they deposits at a licensed bank? Are they virtual ledger entries beneath an omnibus account? Who is the regulated account provider? Where is the underlying account domiciled? Does the customer have a direct claim against a bank, an EMI, or an unregulated technology company? How does the provider obtain dollar liquidity? Which correspondent bank completes settlement? What happens if that correspondent relationship is terminated?
These questions determine whether the structure remains functional during stress.
The same analysis applies to stablecoin settlement. A token may move globally in seconds, but its ability to remain worth one dollar depends on comparatively old-fashioned machinery: banking access, reserve assets, liquidity, custody, compliance, and redemption.
The technology can change. The underlying monetary promise does not.
The useful conclusion
The Eurodollar market demonstrates that money is not merely something a government prints.
Much of modern money consists of credible promises issued by financial institutions. A bank deposit is a promise. A correspondent balance is a promise. An FX swap contains promises to exchange currencies now and reverse the exchange later. A stablecoin is another type of promise.
Global commerce runs on these promises because moving central-bank money across every transaction would be cumbersome and inefficient.
The benefit is flexibility. The danger is that claims can multiply faster than the system’s capacity to honor them during a panic.
That is why the Eurodollar system can simultaneously strengthen and complicate American monetary power. It spreads use of the dollar far beyond US borders, reinforcing the currency’s global importance. But it also creates dollar liabilities beyond the Federal Reserve’s ordinary domestic perimeter; liabilities that may still require Federal Reserve support when the world rushes toward safety.
The dollar became the world’s currency not only because the United States exported it.
The world learned how to manufacture dollar promises of its own.
Practical takeaway: When evaluating a cross-border dollar product, do not stop at the currency label. Map the complete liability and settlement chain: the customer’s legal claim, account domicile, regulated issuer, correspondent bank, liquidity source, safeguarding or reserve arrangement, and final redemption route. The weakest link usually becomes visible only when dollars are hardest to obtain.