Currency swap

A currency swap is a financial derivative contract in which two counterparties exchange cash flows denominated in different currencies over an agreed period. Depending on the contract, the parties may exchange principal amounts at the beginning of the transaction, make periodic interest payments in their respective currencies, and exchange principal amounts again at maturity at a predetermined exchange rate.^[1]

Currency swaps are used by corporations, financial institutions, governments, and other market participants to manage foreign exchange exposure, obtain financing in foreign currencies, and align the currency composition of assets and liabilities.

Structure and mechanism

A currency swap establishes contractual obligations between two counterparties to exchange payments in different currencies. The terms generally specify the currencies, principal amounts, exchange rates, interest rates, payment dates, maturity date, and settlement arrangements.

In a conventional currency swap, the parties may exchange principal amounts at the beginning of the contract. During the contract period, they exchange interest payments based on the agreed terms. At maturity, the principal amounts are generally exchanged back according to the contractual arrangement.

Unlike a conventional interest rate swap, which typically exchanges interest payments in the same currency without exchanging principal, a currency swap involves cash flows in different currencies and may include an exchange of principal.

Example

Consider a company based in the United States that needs euros to finance its European operations, while a European company requires US dollars for its American business.

The companies could enter into a currency swap through which:

The US company provides US dollars and receives euros.
The European company provides euros and receives US dollars.
Each company makes periodic interest payments in the currency it receives, according to the agreed terms.
At maturity, the principal amounts are exchanged back under the contractual exchange-rate arrangement.

Such a transaction may allow each company to obtain funding in the currency it needs while managing its exposure to exchange-rate fluctuations.

Types

Fixed-for-fixed currency swap

A fixed-for-fixed currency swap involves exchanging fixed interest payments in one currency for fixed interest payments in another currency. Principal amounts may be exchanged at inception and maturity.

Fixed-for-floating currency swap

A fixed-for-floating currency swap involves fixed interest payments in one currency and floating interest payments in another. It can be used to manage differences between fixed-rate financing and floating-rate liabilities across currencies.

Floating-for-floating currency swap

A floating-for-floating currency swap, also known as a cross-currency basis swap in common market usage, exchanges floating-rate payment streams linked to different reference rates in different currencies. The contract may include a spread over one of the reference rates.

Cross-currency interest rate swap

A cross-currency interest rate swap combines the exchange of interest payment streams in different currencies with the exchange of principal amounts under specified contractual terms. The interest rates may be fixed, floating, or a combination of both.

Central bank currency swap

A central bank currency swap is an arrangement between central banks to exchange their respective currencies under agreed terms, often to provide foreign currency liquidity to financial institutions or support financial stability. Such arrangements differ in purpose and institutional structure from currency swaps used by private-sector counterparties.

Uses

Foreign exchange risk management

Companies with revenues, expenses, assets, or liabilities denominated in foreign currencies may use currency swaps to reduce their exposure to exchange-rate movements. By matching the currency of financing with the currency of future cash flows, they can reduce certain currency mismatches.

International financing

A company may have better access to financing in its domestic market than in a foreign market. A currency swap can allow it to exchange the proceeds of domestic-currency borrowing for the currency required to finance overseas operations.

Asset and liability management

Banks and financial institutions use currency swaps to manage differences between the currencies of their assets, liabilities, and funding sources. The contracts can help align expected cash inflows with future payment obligations.

Liquidity provision

Central bank swap arrangements can provide access to foreign currency liquidity during periods of financial stress. These arrangements may help address disruptions in international funding markets, depending on their design and implementation.

Investment portfolio management

Institutional investors may use currency swaps to hedge currency exposure associated with foreign-currency bonds and other international investments.

Valuation

The value of a currency swap depends on the present value of its expected future cash flows in each currency, converted using appropriate exchange rates and discount factors.

Important factors affecting valuation include:

Spot and forward exchange rates
Interest rate differentials between the currencies
The contractual exchange rate for principal repayments
The remaining maturity of the contract
Counterparty credit risk
Collateral and funding arrangements
Cross-currency basis spreads

Changes in exchange rates and interest rate curves can cause a currency swap's market value to change during its life.

Risks

Currency swaps involve several risks:

Foreign exchange risk: Changes in exchange rates can affect the value of the contract and the underlying exposures.
Counterparty credit risk: One party may fail to meet its contractual obligations.
Interest rate risk: Changes in interest rates in either currency can affect future payments and market value.
Liquidity risk: A party may face difficulty terminating or replacing a swap at a reasonable cost.
Settlement risk: One party may deliver a currency without receiving the corresponding payment when expected.
Basis risk: Differences between reference rates or funding costs may cause the hedge to perform differently from the underlying exposure.
Operational and legal risk: Documentation, payment-processing, or contractual disputes may result in losses.

A currency swap can reduce particular financial exposures but does not eliminate all financial risk.

Currency swaps and foreign exchange swaps

Currency swaps are distinct from foreign exchange swaps, although the terms are sometimes used interchangeably in less precise contexts.

A currency swap generally involves exchanging principal amounts and streams of interest payments in different currencies over a longer period. An foreign exchange swap typically consists of an exchange of two currencies on an initial date and a reverse exchange on a future date at a rate agreed when the contract is concluded, without the same stream of periodic interest payments characteristic of a conventional currency swap.^[2]

Trading and regulation

Currency swaps are primarily traded in over-the-counter (OTC) derivatives markets. The counterparties negotiate contractual terms directly or through financial intermediaries. Standardised documentation, including agreements published by the International Swaps and Derivatives Association, is widely used in derivatives transactions.

Regulatory requirements vary by jurisdiction and may cover reporting, capital requirements, collateral, risk management, and central clearing where applicable.