Before the ISDA Master Agreement existed, every OTC derivative transaction required its own bespoke legal documentation. In the early 1980s, as the interest rate swap market grew rapidly, banks and their clients faced enormous legal complexity and uncertainty — particularly around what would happen if a counterparty defaulted mid-trade. The International Swaps and Derivatives Association (ISDA) was founded in 1985 to address this, publishing the first Master Agreement in 1987 and a revised version in 1992. A further revision, the 2002 ISDA Master Agreement, is now the standard for most new trading relationships.
Why the ISDA Agreement Exists
The fundamental problem it solves is close-out netting. Suppose Bank A and Counterparty B have 50 OTC derivatives between them — some in the money for A, some for B. If B defaults, without netting, B's administrator might cherry-pick: claiming the trades where B is owed money while refusing to pay on the trades where A is owed money. This "cherry-picking" problem could expose solvent banks to massive losses on trades they thought were hedged.
The ISDA Master Agreement prevents this by creating a single agreement across all covered transactions. If a default event occurs, all trades are automatically terminated simultaneously and netted to a single payment obligation. The net amount owed by the defaulting party — or owed to them if the portfolio is in their favour after netting — is then a single unsecured claim in insolvency. This is vastly better than holding 50 separate exposures.
The Structure: Master Agreement, Schedule, and Confirmations
The ISDA documentation has three layers:
The Master Agreement is the boilerplate — the same printed text for every ISDA counterparty relationship. It sets out the general terms, definitions, default provisions, and termination events. Banks use either the 1992 or 2002 form; the 2002 form has clearer close-out provisions and uses the "Loss" and "Market Quotation" concepts replaced by a single "Close-Out Amount" methodology.
The Schedule is the negotiated part — attached to and amending the Master Agreement for the specific relationship between two parties. The Schedule specifies which elections from the Master Agreement apply (governing law, which events of default are applicable, whether automatic early termination applies, credit provisions, and more). Negotiating an ISDA Schedule between two large institutions can take months and involves legal counsel on both sides.
Trade Confirmations are produced for each individual transaction. A confirmation specifies the economic terms of a single trade: notional, fixed rate, floating rate, payment dates, tenor, and the applicable definitions (e.g., ISDA 2021 Interest Rate Definitions). The confirmation supplements the Master Agreement and Schedule for that specific trade.
Events of Default
The ISDA Master Agreement specifies eight standard events of default that allow the non-defaulting party to terminate all trades and demand close-out payment:
- Failure to pay or deliver
- Breach of agreement
- Credit support default
- Misrepresentation
- Default under specified transaction
- Cross default (default on other material debt)
- Bankruptcy or insolvency
- Merger without assumption of obligations
The most frequently triggered in practice are bankruptcy and failure to pay or deliver. Cross default is significant because it means that defaulting on a bond or loan can trigger the ISDA close-out, even if all derivatives are current — a provision that creates linkage between different parts of a company's capital structure.
Termination Events
Distinct from events of default, termination events are circumstances that make it impractical to continue the relationship without either party being "at fault." Standard termination events include illegality (a change in law makes a party unable to perform), tax event (a withholding tax is imposed), and credit event upon merger. Termination events typically allow for a partial close-out or give the affected party time to transfer transactions to an unaffected entity.
The Credit Support Annex (CSA)
The Credit Support Annex is a separate document — typically negotiated alongside the Schedule — that governs collateral exchange between the parties. A standard English law CSA specifies:
- The threshold: the amount of uncollateralised exposure each party tolerates before requiring collateral.
- The minimum transfer amount: the smallest margin call that triggers a collateral transfer (to avoid constant small movements).
- The eligible collateral: typically cash and high-grade government bonds.
- The haircuts: discounts applied to non-cash collateral to account for market risk in the collateral itself.
For cleared derivatives (through a CCP like LCH SwapClear), the clearing house's own margin rules replace the bilateral CSA. For uncleared derivatives, the 2016 ISDA VM Protocol and IM Protocol set minimum standards for variation margin and initial margin exchange under BCBS/IOSCO rules.
ISDA 1992 vs 2002
The 1992 ISDA used two alternative close-out methodologies ("Market Quotation" and "Loss") that created ambiguity and litigation after the Lehman Brothers default in 2008. The 2002 ISDA replaced these with a single "Close-Out Amount" methodology based on the non-defaulting party's good faith estimate of the cost of replacing the terminated transactions. The 2002 form also extended the grace periods for certain events and clarified the treatment of interest on close-out amounts. Most new ISDA relationships now use the 2002 form, though many legacy relationships still operate under 1992 agreements.