Eurodollar System Explained: Offshore Dollars

KenMacro Guide, 2026

By Ken Chigbo, Founder, KenMacro, UK macro desk.

Find Ken on X @realkenchigbo · YouTube @Realkenchigbo · MACRO MASTERY Discord

Updated 2026-06-03

Where the Eurodollar System Came From

The market grew in the 1950s when holders of dollars, including Soviet state banks wary of US sanctions, parked balances at European banks rather than in New York. London lenders realised they could accept these dollar deposits and re-lend them without falling under US reserve requirements or interest rate caps. The City had found a regulatory gap, and it became a business. Through the 1960s and 1970s the network expanded as multinational corporates, oil exporters and sovereign borrowers used offshore dollars to bypass capital controls and tap cheaper credit. By the 1980s the eurodollar market was larger than the onshore US money market. By the 2000s it had fused with repo, FX swaps and derivatives into a vast shadow banking machine. The system was never designed, it accreted. That history matters because the plumbing is messy, opaque and held together by bilateral credit lines between dealer banks, not by any central authority with a printing press.

How Offshore Dollars Are Actually Created

A common myth is that eurodollars are dollars physically shipped abroad. They are not. When a London bank accepts a dollar deposit and lends those dollars to a Brazilian corporate, it credits the borrower’s account with a new dollar balance. That balance is a liability of the London bank, denominated in dollars, and the borrower can spend it anywhere in the world. No Fed reserves moved. A new offshore dollar was created through a ledger entry, in the same way a domestic bank creates currency by extending a loan. The constraint is not reserves, it is the willingness of other banks and counterparties to accept that bank’s dollar IOU. Repo against collateral, FX swaps against other currencies and interbank credit lines all expand the supply of usable dollars far beyond what the Fed has issued. This is why money supply aggregates published by central banks badly understate true global dollar liquidity, and why the dollar can tighten violently even when the Fed is on hold.

Why the System Matters for Markets

Roughly half of global trade is invoiced in dollars, and a large share of emerging market debt is dollar denominated. None of that funding comes directly from the Fed. It comes from the eurodollar system, priced off offshore rates, FX swap implied yields and the cross currency basis. When this market functions smoothly, exporters get cheap working capital, sovereigns roll their debt and carry trades flourish. When it seizes up, the symptoms appear quickly: the dollar index spikes, the cross currency basis blows out negative, repo rates jump, and emerging market currencies fall regardless of their fundamentals. The 2008 crisis and the March 2020 shock were both fundamentally eurodollar funding crises, which is why the Fed responded with central bank swap lines to foreign central banks. Those swap lines are an admission that the Fed is the lender of last resort to an offshore system it does not regulate. Traders who watch only domestic indicators miss the real liquidity signal.

What to Watch as a Trader

The eurodollar system leaves fingerprints in several observable spreads. The cross currency basis, particularly EUR/USD and JPY/USD, shows how expensive it is to borrow dollars via FX swaps against foreign currency collateral; a deeply negative basis signals offshore dollar shortage. SOFR against fed funds, and the spread between offshore implied dollar rates and onshore rates, reveal stress in interbank funding. Usage of the Fed’s standing repo facility and foreign repo pool flags balance sheet pressure on dealers. Dollar index strength combined with weakness in high beta currencies and emerging market credit usually confirms a funding squeeze rather than a fundamentals story. Eurodollar futures, now transitioned to SOFR futures, still encode the market’s view on the path of short dollar rates and act as a barometer of liquidity expectations. None of these need to be traded directly. They simply tell you whether the global plumbing is loose or tight, and that single piece of context will improve nearly every macro discretionary decision you make.

The desk’s checklist

1. Map the plumbing. Sketch the main offshore dollar pools: London banks, Tokyo branches, offshore subsidiaries and non-bank lenders. Knowing who funds whom helps you anticipate where stress shows up first when conditions tighten.
2. Track funding spreads. Add cross currency basis, SOFR spreads and FX swap implied yields to your dashboard. Check them weekly. Persistent widening warns of dollar scarcity before headline indices react to the underlying shift.
3. Read the dollar. Treat the dollar index as a liquidity gauge, not just an FX pair. A grinding bid in DXY alongside wider funding spreads usually means offshore dollars are getting harder to source.
4. Watch swap line use. Monitor Fed swap line drawings by foreign central banks. Any meaningful uptake is a hard signal that private offshore funding has broken and policy backstops are now active.
5. Position accordingly. In tight regimes, favour the dollar, fade emerging market carry and respect equity downside risk. In loose regimes, fade dollar strength, lean into carry and risk assets with appropriate sizing.

Frequently asked

Is a eurodollar the same as the euro currency?

No, and the names are an unfortunate coincidence. A eurodollar is a US dollar deposit or loan booked at a bank outside the United States, in any country, in any currency zone. The euro is the single currency of the eurozone. The ‘euro’ prefix in eurodollar predates the European currency by decades and originally just meant ‘offshore’, as the market began in European banks.

Does the Fed control the eurodollar system?

Only indirectly. The Fed sets the policy rate and supplies reserves to US banks, which influences the cost of dollars globally. But it does not regulate offshore banks, does not see their balance sheets in real time and cannot force them to lend. Its main tool over the offshore system is the network of central bank swap lines, which let foreign central banks distribute dollars during stress.

Why is the cross currency basis important?

The cross currency basis measures the premium paid to borrow dollars via FX swaps against another currency, relative to interest rate parity. When it is negative, foreign borrowers are paying extra for dollars, which means dollars are scarce offshore. It is one of the cleanest real time signals of eurodollar funding stress and a reliable early warning for dollar strength and risk asset weakness.

Did eurodollar futures disappear?

The contracts referencing three month US dollar LIBOR were phased out as LIBOR was retired. They were replaced by SOFR futures, which reference the secured overnight financing rate. The underlying market they track, expectations for short dollar funding rates, is unchanged. Traders who used eurodollar futures for hedging and macro positioning simply moved to SOFR contracts.

How do I trade eurodollar system stress?

Most retail traders should not trade the funding instruments directly. The practical edge is using funding signals as a regime filter. When offshore dollars tighten, bias trades long the dollar against high beta currencies, reduce risk in emerging market exposures and respect downside in equities. When funding loosens, the opposite bias works. The plumbing tells you the regime, your usual instruments express it.

Educational analysis only, not financial advice. KenMacro has commercial partnerships with some firms referenced and may earn a commission if you open an account, at no cost to you.