Swap

A swap is a bilateral over-the-counter derivatives contract in which two counterparties agree to exchange series of cash flows or other financial obligations — denominated on a notional principal amount — over a specified period, with each stream of payments constituting a "leg" of the agreement, and with the instrument used broadly for hedging, risk management, and financial restructuring across interest rate, currency, credit, commodity, and equity markets worldwide.

History

Origins and early development

The earliest antecedents of the modern swap arose in Great Britain during the 1970s, when multinational companies and their banks devised structures to circumvent foreign exchange controls imposed by the British government. The British government taxed transactions involving the exchange of sterling for foreign currencies, which constrained cross-border capital flows and complicated the financing of international business. In response, financial practitioners arranged back-to-back loans and parallel loan agreements in which two companies in different countries simultaneously lent each other equivalent sums in their respective domestic currencies, thereby achieving economic currency exchange without triggering the controls or the associated tax. These arrangements were cumbersome and carried on-balance-sheet accounting implications, but they established the conceptual foundation — the mutual, bilateral exchange of financial obligations — on which the formal swap market would later be constructed.

The transaction, widely regarded as the first formalized swap agreement, took place on August 11, 1981, when the World Bank and IBM entered into a currency swap arranged by Salomon Brothers. The World Bank required Swiss franc and Deutsche mark financing to fund loans to developing nations, but had reached its statutory borrowing limits in both Switzerland and West Germany. IBM, for its part, held large amounts of Swiss franc and Deutsche mark debt accumulated from earlier borrowings and wished to reduce its exposure to those currencies while gaining dollar obligations. The solution Salomon Brothers proposed was direct and elegant: the World Bank issued a U.S. dollar bond in the American market, and the two parties swapped the resulting obligations — the World Bank agreed to service IBM's Swiss franc and Deutsche mark debt payments, while IBM assumed responsibility for the World Bank's dollar bond payments. The transaction settled on August 25, 1981, with the first annual payment date set for March 30, 1982. Neither party exchanged a single lump sum; instead, they exchanged a series of interest and principal payments over the life of the agreement.

This foundational architecture — the periodic, bilateral exchange of payment streams over time, grounded in a notional principal that itself typically does not change hands — became the structural template for all subsequent swap instruments. Market participants and legal commentators recognized that a swap was not simply a bet on a price at a single moment in time, but an executory relationship involving mutual ongoing obligations across multiple payment dates. The payment streams, known as the fixed leg and the floating leg in an interest rate context, or the domestic currency leg and the foreign currency leg in a currency context, gave the swap its defining bilateral character.

Market growth and the absence of regulation

Through the mid-1980s, the swap market expanded at a pace that outstripped regulatory understanding. Banks, investment banks, and their corporate and sovereign clients used interest rate and currency swaps to manage borrowing costs, restructure existing debt obligations, and access capital markets in currencies and at maturities not otherwise available. The market was entirely over-the-counter — trades were negotiated bilaterally, documentation was bespoke, and no centralized exchange, clearinghouse, or regulatory framework governed the terms or reporting of transactions. The absence of standardization created legal and operational risk; parties to swaps frequently used inconsistent terminology, differing definitions of reference rates, and incompatible provisions for events of default and termination.

The International Swap Dealers Association — later renamed the International Swaps and Derivatives Association (ISDA) — was founded in 1985 specifically to address the problem of non-standardization. The organization's first project was the 1985 Code of Standard Wording, Assumptions and Provisions for Swaps, updated in 1986, which provided common terminology and standard provisions for interest rate swaps. In 1987, ISDA published three documents: a standard form master agreement for U.S. dollar interest rate swaps; a standard form master agreement for multi-currency interest rate and currency swaps; and a user's guide to those instruments. These documents, collectively known as the 1987 ISDA Master Agreement, established the framework for documenting fixed and floating payment legs, specifying payment dates, defining termination events, and providing close-out netting mechanisms. The 1987 Master Agreement was substantially revised and republished as the 1992 ISDA Master Agreement and again in 2002.

Regulatory Uncertainty and the CFTC's Response

Beginning in 1987, the Commodity Futures Trading Commission (CFTC) began examining whether swaps qualified as futures contracts under the Commodity Exchange Act (CEA). The question carried serious consequences: the CEA requires futures to be traded on designated exchanges, and a determination that swaps were unregistered off-exchange futures could have rendered a large portion of the existing market illegal and unenforceable. Rather than resolve the question through a formal rulemaking, the CFTC issued a Policy Statement on swap transactions on July 17, 1989, establishing a no-action safe harbor for OTC swaps that met specified conditions. To qualify, a swap had to be entered into solely by eligible participants, individually negotiated, not standardized or fungible, not marketed to the general public, and characterized by the ongoing creditworthiness-based bilateral relationship between sophisticated counterparties rather than the standardized exchange-traded form of a futures contract. The CFTC was codifying what the market already understood: a swap was an ongoing bilateral arrangement involving multiple payment exchanges, not a one-time contingent settlement.

Congress granted the CFTC explicit statutory authority to exempt OTC derivatives through the Futures Trading Practices Act of 1992, which authorized the Commission to exempt both exchange-traded and OTC derivative contracts from all but one provision of the CEA, including the exchange-trading requirement. The CFTC exercised this authority in 1993 by adopting the Part 35 exemption for swap agreements, which codified the conditions from the 1989 Policy Statement into formal regulation and provided the market with a durable legal foundation. Swaps that met the Part 35 criteria — entered into by eligible swap participants acting bilaterally, individually negotiated, and not standardized or fungible — were exempt from the CEA's exchange-trading requirement, anti-manipulation provisions, and most other regulatory requirements. The Commodity Futures Modernization Act of 2000 went further, largely deregulating OTC derivatives and exempting qualifying swap agreements between Eligible Contract Participants from the CEA's exchange-trading requirements, provided they were not executed on a trading facility.

The 2008 Financial Crisis and Legislative Reform

The swap market underwent a structural crisis between 2007 and 2009, precipitated in large part by credit default swaps written on mortgage-backed securities. American International Group (AIG), operating through its AIG Financial Products subsidiary based in London, had sold credit default swap protection on collateralized debt obligations and other structured credit products without maintaining sufficient collateral reserves or capital against potential losses. When the underlying mortgage market deteriorated, AIG faced cascading collateral calls it could not meet. On September 15, 2008, downgrades by credit rating agencies triggered CDS-related collateral calls that brought the firm to the brink of collapse, and the Federal Reserve Bank of New York extended an emergency revolving credit line of up to $85 billion on September 16, 2008, to prevent AIG's disorderly failure and the cascade of counterparty losses that would have followed.

The Financial Crisis Inquiry Commission's investigation concluded that AIG failed primarily because its enormous sales of credit default swaps were made without adequate initial collateral, capital reserves, or hedging against its exposure — a failure attributed to deficiencies in corporate governance and risk management that were enabled by the near-total absence of regulatory oversight of the OTC swap market. The AIG episode, along with the broader collapse in structured credit products, drove the political consensus that produced Title VII of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010, the first comprehensive federal regulatory framework for swaps.

Mechanics

Basic structure

A swap agreement involves two parties — counterparties — who agree to exchange payment streams calculated on a notional principal amount over a defined period. The notional principal is a reference amount used to calculate the size of the periodic payments; in most swap structures, the notional principal does not itself change hands. Each party's payment obligation constitutes a "leg" of the swap: the party paying a fixed rate has the fixed leg, and the party receiving a fixed rate and paying a floating rate has the floating leg. In a currency swap, the legs are denominated in different currencies, and the exchange of principal may occur at the inception and maturity of the transaction. Payment dates are specified in the confirmation, which supplements the ISDA Master Agreement and sets out the economic terms of the individual transaction. At each payment date, the parties calculate the amounts owed on each leg and typically settle by exchanging the net difference rather than the gross amounts, a process known as net settlement.

Types of swaps

The swap market encompasses a range of instrument types, each designed to transfer a different category of financial risk between counterparties. The most prevalent form is the plain vanilla interest rate swap, in which one party pays a fixed interest rate while the other pays a floating rate — historically referenced to LIBOR and, following the global transition that began in 2017, increasingly referenced to alternative risk-free rates including the Secured Overnight Financing Rate (SOFR) in the United States, the Sterling Overnight Index Average (RONIA) and Reformed Overnight Index Average (EURONIA) in the United Kingdom and euro area, and equivalent rates in other jurisdictions. A currency swap involves the exchange of principal and interest payments in two different currencies, allowing counterparties to access foreign financing at more favorable terms than direct borrowing in those markets would permit. A credit default swap (CDS) transfers the credit risk of a reference entity from the protection buyer, who pays periodic premiums, to the protection seller, who agrees to make a contingent payment upon the occurrence of a defined credit event such as default or restructuring. A total return swap transfers both the economic return (income and capital appreciation) and the risk of loss of a reference asset from one party to the other, without requiring actual transfer of ownership of the underlying asset. Commodity swaps exchange fixed prices for floating market prices of commodities such as crude oil, natural gas, or agricultural products. Equity swaps exchange the total return of an equity index or individual stock for a floating interest rate payment. Each type serves distinct hedging and financing purposes within its relevant market segment.

The swap curve

The yield curve derived from market-observed swap rates — the fixed rates at which market participants are willing to enter into interest rate swaps of various maturities — is known as the swap curve. The swap curve serves as a benchmark for pricing a wide range of fixed-income instruments and is used by corporations, asset managers, and financial institutions to assess borrowing costs and relative value. For many tenors and in many currencies, swap rates are more liquid and more continuously quoted than equivalent government bond rates, making the swap curve the preferred pricing reference for corporate debt, mortgage instruments, and structured products. The spread between the swap rate and the government bond yield for a given maturity — the swap spread — reflects market participants' assessment of credit risk, liquidity conditions, and the supply-and-demand dynamics in both swap and government bond markets.

Regulatory framework

Dodd-Frank Title VII

Title VII of the Dodd-Frank Wall Street Reform and Consumer Protection Act, enacted in July 2010, established the first comprehensive federal regulatory framework for swaps in the United States. Section 721 of the Act added a statutory definition of "swap" to the CEA at Section 1a(47), encompassing any agreement, contract, or transaction that is an option based on the value of rates, currencies, commodities, securities, or indices; that provides for any payment dependent on the occurrence, nonoccurrence, or the extent of the occurrence of an event or contingency associated with a potential financial, economic, or commercial consequence; or that provides on an executory basis for the exchange of one or more payments based on the value or level of rates, currencies, commodities, securities, or indices, and that transfers the financial risk associated with a future change in any such value or level. The CFTC and the Securities and Exchange Commission jointly finalized rules further defining these terms in August 2012.

Title VII also imposed mandatory clearing requirements for standardized swaps, trade execution requirements mandating that cleared swaps be executed on registered swap execution facilities (SEFs) or designated contract markets (DCMs), real-time public reporting of swap transactions, reporting to registered swap data repositories (SDRs), registration and business conduct standards for swap dealers and major swap participants, and capital and margin requirements for uncleared swaps. The CFTC issued its first mandatory clearing determination in November 2012, covering certain classes of interest rate swaps and index credit default swaps, with compliance phases beginning in March 2013 and extending through June 2013 for all bank counterparties.

Swap execution facilities

Title VII created the SEF as a new category of regulated trading venue for swaps, defined in Section 733 of Dodd-Frank as a trading platform providing pre-trade information and a mechanism for executing swap transactions among eligible participants. SEFs were designed to bring transparency and competition to swap markets that had previously traded exclusively through bilateral voice or electronic negotiation. The CFTC adopted final SEF registration rules in May 2013, requiring registered SEFs to provide either a central limit order book or a request-for-quote system for the execution of swap transactions subject to a trade execution mandate. Only swaps subject to a CFTC clearing determination and determined to be "made available to trade" by at least one SEF are subject to mandatory SEF execution; other swaps may continue to be executed bilaterally, though they remain subject to reporting and, where applicable, clearing requirements.

Mandatory clearing

The Dodd-Frank Act granted the CFTC authority to require that standardized swaps be submitted for clearing to a registered derivatives clearing organization (DCO), also referred to as a central counterparty or CCP. Mandatory clearing interposes the CCP between the two original counterparties, replacing the bilateral credit exposure of the original swap with two separate cleared transactions in which each original party faces the CCP. This structure reduces counterparty credit risk, facilitates multilateral netting of offsetting positions, and enables the CCP to collect initial and variation margin from both parties, reducing systemic risk. Central counterparties for swap clearing include CME Group and LCH in the interest rate swap market, and ICE Clear Credit in the credit default swap market, among others. The end-user exception permits non-financial entities using swaps to hedge commercial risk to opt out of the mandatory clearing requirement under specified conditions.

Market size

At mid-year 2024, the notional value of outstanding OTC derivatives globally stood at approximately $714 trillion, according to statistics compiled by the Bank for International Settlements (BIS), representing a 2 percent increase year-on-year. Interest rate derivatives — which include swaps, forward rate agreements, and interest rate options — constitute the largest single category of OTC derivatives by notional outstanding. By mid-year 2025, total OTC derivatives notional outstanding had risen to $846 trillion, up 16 percent from mid-year 2024, with the gross market value of OTC derivatives rising by $5 trillion, or 29 percent, year-on-year to $21.8 trillion. At mid-year 2024, market participants posted $364.4 billion in required initial margin for cleared interest rate derivatives and credit default swap transactions at major central counterparties, compared with $389.0 billion at mid-year 2023.

By year-end 2024, the notional outstanding of global OTC derivatives rose by 4.9 percent compared with year-end 2023, while the gross market value of OTC derivatives contracts fell by 2.8 percent, and gross credit exposure — representing gross market value after netting — also fell by 2.8 percent over the same period. The decline in gross credit exposure despite rising notional amounts reflects the continued expansion of close-out netting, collateralization, and central clearing, all of which have reduced the actual economic exposure represented by the notional figures. Interest rate derivatives remain the largest asset class by notional outstanding, with foreign exchange derivatives — including currency swaps — the second largest.

Usage

Key users

Institutional investors, including pension funds, insurance companies, endowments, and sovereign wealth funds, use swaps primarily to manage the duration and interest rate sensitivity of fixed-income portfolios, to hedge currency exposures arising from international investment, and to achieve target asset allocation exposures without transacting in the underlying securities. Asset managers employ swap overlays to adjust portfolio characteristics efficiently relative to transacting in the underlying bond or equity markets, particularly when the size of the required adjustment would create market impact. Corporations use swaps to convert floating-rate debt to fixed-rate obligations or vice versa, to hedge the currency risk embedded in cross-border financing and operations, and to manage exposure to commodity prices affecting input costs or revenue streams. Banks and broker-dealers both use and intermediate swaps, maintaining swap books that allow them to facilitate client transactions while managing their aggregate exposure through offsetting positions. Proprietary trading firms participate in swap markets to take directional views on interest rates, credit spreads, and currency relationships, contributing to overall liquidity.

Governments and supranational entities, including the World Bank and regional development banks, have been significant swap market participants since the instrument's origin, using currency and interest rate swaps to manage the currency and rate composition of their debt portfolios and to optimize borrowing costs across markets. Central banks have used swap arrangements — including central bank swap lines, in which two central banks agree to exchange currencies — to provide dollar liquidity to foreign financial systems during periods of market stress, including the 2008 financial crisis and the COVID-19 pandemic disruptions of 2020.

Risk management

Swap market participants face multiple categories of risk that must be managed at the individual transaction, portfolio, and systemic levels. Counterparty credit risk — the risk that a counterparty to an OTC swap will fail to perform its obligations — was historically the primary risk managed through bilateral collateral arrangements under ISDA Credit Support Annexes. Following Dodd-Frank, mandatory clearing has transferred the majority of standardized swap counterparty risk to central counterparties, which manage it through margin requirements, default funds, and waterfall arrangements. Interest rate risk arising from swaps is managed through delta hedging using futures, government bonds, and other offsetting instruments. Basis risk — the risk that the benchmark rate to which a floating leg is referenced moves differently from the rate underlying an offsetting hedge — became a major concern during the LIBOR-to-SOFR transition, as the two rates behaved differently in stress scenarios.

Controversies

The swap market has been the subject of significant controversy on at least three occasions since its inception. The first and most consequential arose from the role of credit default swaps in the 2008 financial crisis. As described by the Financial Crisis Inquiry Commission, AIG's failure to maintain adequate capital reserves and collateral against its CDS portfolio exemplified the systemic risk created by the unregulated, opaque OTC swap market. The episode demonstrated that the bilateral, netting-based structure of the OTC swap market could obscure the true extent of interconnected exposures across the financial system, and that the absence of mandatory clearing and reporting enabled risk concentrations that were invisible to regulators until they became acute.

The second major controversy concerned the manipulation of the London Interbank Offered Rate (LIBOR), the floating-rate benchmark most commonly referenced in interest rate swap floating legs. In June 2012, Barclays PLC agreed to pay $200 million to the CFTC and an additional $160 million to the U.S. Department of Justice to settle charges that it had attempted to manipulate LIBOR and Euribor on numerous occasions over a four-year period beginning in 2005, submitting rates designed to benefit its own derivatives trading positions and, during the financial crisis, artificially low rates intended to protect its reputation. Because LIBOR underpinned an estimated $350 trillion in derivatives contracts globally at the time, including hundreds of trillions of dollars in swaps, the manipulation affected the settlement values of an enormous volume of outstanding transactions. Subsequent investigations implicated multiple additional global banks, leading to further fines, criminal prosecutions, and ultimately the decision to phase out LIBOR as a market benchmark, with the final panel submissions for most LIBOR tenors ending in June 2023.

The third significant controversy involves the use of total return swaps by leveraged entities to accumulate concentrated equity positions without the disclosure requirements that would apply to direct stock ownership. The collapse of Archegos Capital Management in March 2021 provided the most prominent example of this phenomenon. Archegos, a family office managing the assets of Bill Hwang, had used total return swap arrangements with multiple prime brokers to build concentrated positions in ViacomCBS, Discovery, and several other stocks, with the banks holding the underlying shares as nominal owners while Archegos bore the economic risk. Because neither Archegos nor its prime brokers were required to disclose the aggregate size of these swap positions publicly, the extent of the concentration was not visible to other market participants or to regulators. When the positions deteriorated and banks began liquidating collateral, the forced selling caused severe price declines, resulting in losses exceeding $10 billion across Credit Suisse ($5.5 billion), Nomura ($2.85 billion), Morgan Stanley ($911 million), UBS ($774 million), and Mitsubishi UFJ Financial Group ($300 million). Archegos itself lost approximately $20 billion in two days. The episode prompted the SEC to charge Hwang with fraud and racketeering in April 2022, and it renewed regulatory debate about disclosure requirements for swap-based equity exposures.

See also

• Interest Rate Swap
• Credit Default Swap
• ISDA Master Agreement
• Swap Execution Facility
• Dodd-Frank Wall Street Reform and Consumer Protection Act
• Commodity Futures Modernization Act of 2000