The Eurocurrency Market: What It Is and Why It Exists

A eurocurrency is a bank deposit denominated in a currency other than that of the country in which the bank holding it is located. A dollar deposit with a bank in London is a eurodollar; a yen deposit with a bank in Singapore is a euroyen; a sterling deposit with a bank in Frankfurt is a eurosterling.

The prefix is a historical accident and the single most common source of confusion. It has nothing to do with Europe as a region and nothing whatever to do with the single European currency. A dollar deposit in Tokyo or the Cayman Islands is a eurodollar in exactly the same sense as one in London.

What makes the market distinct

The defining feature is regulatory rather than geographical. A deposit taken in a currency outside its home jurisdiction falls outside the domestic regulatory regime for that currency, and historically outside the reserve requirements, deposit insurance levies and interest rate ceilings that applied to domestic banking.

Three consequences follow, and between them they explain the market's entire existence.

Costs are lower. A bank required to hold a fraction of every domestic deposit in a non-interest-bearing reserve must recover that cost in its spread. A deposit outside that requirement does not carry the cost, so the bank can pay more to depositors and charge less to borrowers on the same underlying funds.

The market is wholesale. Transactions are large, counterparties are banks, large corporations, institutional investors and governments, and there is no retail participation. That keeps unit costs low and permits narrow spreads.

It is unsecured and interbank. The market's core is banks lending to each other for short periods without collateral, which makes it efficient in ordinary conditions and fragile when confidence in bank credit weakens.

How it arose

The origins are usually traced to the 1950s, when holders of dollar balances who preferred not to keep them in the United States placed them with banks in London. The motive at that point was political and not commercial.

The commercial expansion came from domestic regulation. Ceilings on the interest that domestic banks could pay on deposits made offshore dollar deposits more attractive whenever market rates rose above the ceiling, and reserve requirements gave offshore banks a permanent cost advantage. Both features made it cheaper to conduct dollar banking outside the United States than inside it, and the market grew for as long as that differential persisted.

Two later developments turned a niche into the principal channel of international finance. The recycling of large current account surpluses through the international banking system in the 1970s supplied enormous volumes of deposits looking for a home, and the syndicated loan technique allowed groups of banks to lend amounts no single institution would take.

Pricing

The mechanics of pricing are what the market is actually examined on.

Interbank lending is quoted as an offered rate for a given currency and maturity — overnight, one month, three months, six months, twelve months. A loan priced off that rate is quoted as the reference rate plus a margin, and the margin reflects the borrower's credit standing and the structure of the facility, not the cost of money.

The critical feature for a corporate borrower is the roll-over. A medium-term facility is not a fixed rate loan; it is a series of short interest periods, each repriced at the reference rate prevailing at the start of the period. The bank's funding risk is removed, because it matches each interest period with a deposit of the same maturity. The interest rate risk moves entirely onto the borrower, who knows the margin for the life of the facility and the underlying rate only for the current period.

That allocation of risk is the market's central bargain, and it explains both why medium-term international lending became possible on this scale and why borrowers with floating rate exposure became the natural market for interest rate swaps and caps.

The reference rate framework has since been reformed. The forward-looking unsecured term rates that the market relied on for decades were dependent on a panel of banks submitting estimates in a market that had itself become thinner, and they have been replaced for most purposes by rates calculated from actual overnight transactions, compounded over the interest period. The economic structure of the product is unchanged; what has changed is that the reference rate is now backward-looking and derived from observed trades and not quoted estimates.

Syndication, and why it exists

A single facility of several hundred million is rarely provided by one bank, and the syndicated structure is worth understanding because it is how most large cross-border lending is actually done.

One or more banks act as arrangers. They negotiate the terms with the borrower, underwrite the amount or agree to use their best efforts to place it, and then invite other banks to take participations. An agent bank administers the facility afterwards: it collects and distributes payments, sets the rate at the start of each interest period, and is the channel through which the borrower deals with the syndicate.

The arrangement gives each side something it could not otherwise have. The borrower gets a single set of documents, a single set of covenants and one point of contact for an amount no individual lender would take against one name. Each lender gets a participation sized to its own appetite, on terms it did not have to negotiate, with the credit work substantially done.

The structure has one important consequence in difficulty. A borrower seeking to amend terms must obtain the consent of a stated majority of the syndicate, and for certain fundamental changes the consent of every lender. Renegotiating with twenty banks whose own positions differ is a far harder exercise than renegotiating with one, and it is why the identity of the syndicate matters to a treasurer as much as the pricing does.

Eurobonds, which are a different instrument

The vocabulary overlaps and the instruments do not.

A eurocurrency deposit or loan is a banking transaction: a deposit with, or a loan from, a bank. A eurobond is a security issued in a currency other than that of the country of issue and sold to investors in more than one country, usually underwritten by an international syndicate.

The practical differences matter to a treasurer. Bank borrowing is typically floating rate, drawn and repaid flexibly, with covenants and a continuing relationship. A bond issue is typically fixed rate, for a longer term, sold to investors with whom there is no relationship, and cannot be repaid early without cost. The two are complements rather than substitutes, and the choice between them is a question of maturity, rate basis and the willingness to accept covenants.

Why a company uses the market

Four reasons account for most corporate use.

Matching currency to cash flow. A business with revenue in dollars and costs in sterling reduces exposure by borrowing dollars, because the debt service comes from the same currency as the receipts. This is the most defensible reason and the one most often missed in answers, which reach for the rate comparison instead.

Scale. Amounts that would exhaust a domestic bank's appetite are routinely raised through syndication.

Cost. The absence of the domestic regulatory cost base historically produced a finer rate for the same credit, and the deposit side correspondingly paid more.

Maturity and flexibility. Multi-currency revolving facilities allow a group to draw in whichever currency it needs, repay and redraw, with a single set of documents.

The reason that should not appear unqualified is a simple comparison of nominal interest rates between currencies. Borrowing in a low nominal rate currency is not cheap funding; interest rate differentials broadly reflect expected movements in the exchange rate, so the apparent saving is the price of accepting currency risk. A borrower who takes that risk deliberately, with a view on the currency or a matching asset, is making a decision. A borrower who takes it because the quoted rate looked lower has misread the market.

Risks and criticism

The market's efficiency comes from the same features that make it fragile, and both belong in a balanced answer.

Credit and liquidity risk. Short-term unsecured interbank lending relies on continuous confidence between banks. When that confidence weakens, the market does not reprice gradually; it contracts, and institutions funding longer assets with short deposits find the funding gone.

Maturity transformation. Lending for five years on the strength of three-month deposits is profitable while rollover is automatic and dangerous when it is not.

Regulatory arbitrage. The market's original advantage came from being outside the domestic rules, which is an advantage obtained by escaping a safeguard rather than by superior efficiency. Successive rounds of international capital and liquidity standards exist to close exactly that gap, and much of the historical cost advantage has narrowed as a result.

Transmission. Because the market links banking systems directly, it transmits shocks between them quickly, and a funding problem originating in one currency reaches institutions with no exposure to that economy.

How it is examined

Questions come in two shapes.

A definitional question asks what a eurocurrency is and why the market exists. The answer needs the definition stated precisely, the disclaimer about the prefix, and the regulatory explanation for the cost advantage. A list of features without the regulatory reason describes the market without explaining it.

An applied question gives a company with foreign currency revenue or an international expansion to finance, and asks how it should fund itself. Work from the cash flows: what currency the receipts are in, what maturity the asset requires, whether the rate basis should be fixed or floating, and what the exposure is if the funding is not matched. Name the roll-over structure and say who carries the interest rate risk under it. Then, and only then, discuss cost, with the point about interest rate differentials stated, not assumed away.