The International Swaps and Derivatives Association (ISDA) was founded in 1985 to bring standardisation to the then-nascent OTC derivatives market. Before ISDA documentation existed, derivatives counterparties negotiated bespoke contractual arrangements for every transaction — a process that was slow, expensive, legally uncertain, and created enormous risk in the event of a counterparty default. ISDA's solution was to create a standard form master agreement that would govern all OTC derivatives transactions between two counterparties, replacing the patchwork of ad hoc documentation with a single, comprehensive legal framework.
A Brief History of ISDA Documentation
The first ISDA Master Agreement was published in 1987. It was a relatively simple document designed primarily for interest rate swaps between large financial institutions. As the OTC derivatives market grew rapidly through the late 1980s and 1990s, covering a broader range of products (FX derivatives, equity derivatives, credit derivatives, commodity derivatives) and a wider set of counterparties (corporates, sovereigns, asset managers, hedge funds), the need for a more comprehensive document became clear.
ISDA published a substantially revised Master Agreement in 1992. The 1992 Master Agreement introduced the two-payment measure concept (Market Quotation and Loss) and the two-close-out methods (First Method and Second Method), providing more flexibility in how close-out amounts were calculated. The 1992 Agreement rapidly became the market standard and remained dominant through the 1990s and into the 2000s.
Following the experience of close-outs in the late 1990s (the LTCM crisis, various emerging market defaults) and the early 2000s (Enron, WorldCom), ISDA undertook a comprehensive revision that resulted in the 2002 Master Agreement. The 2002 Agreement streamlined close-out mechanics, eliminated the problematic First Method (which could leave a non-defaulting party unable to recover money owed to it), and introduced the Close-out Amount concept to replace Market Quotation and Loss.
The Four-Component Structure
ISDA documentation for any trading relationship consists of four inter-related components, each serving a distinct purpose:
1. The Master Agreement
The Master Agreement is the standard-form boilerplate document published by ISDA — either the 1992 or 2002 version. It sets out the general legal framework: the representations made by each party, their general obligations, events of default, termination events, the close-out mechanism, and the governing law. The Master Agreement itself contains blanks and elections — these are not filled in the Master Agreement itself but in the Schedule.
2. The Schedule
The Schedule modifies and supplements the Master Agreement to reflect the specific commercial and legal agreement between the two counterparties. It is here that the parties make elections (choosing between alternatives in the Master Agreement), add additional provisions, and agree any bespoke terms. Key elections in the Schedule include: the governing law (English law or New York law are the two most common), the base currency for calculating close-out amounts, which entities are covered by the agreement, any additional representations, and the threshold amounts for collateral posting under the CSA. The Schedule is the most heavily negotiated document in the ISDA package.
3. The Credit Support Annex (CSA)
The CSA is a separate document (technically an annex to the Schedule) that governs the posting and receipt of collateral to cover the mark-to-market exposure between the two parties. Key terms negotiated in a CSA include: the eligible collateral types (cash, government bonds, and sometimes other securities), the minimum transfer amount (below which neither party needs to make a call), the threshold (the amount of uncollateralised exposure each party can have before collateral is required — often zero for banks transacting with each other, but non-zero for corporate and buy-side counterparties), the independent amount (an additional amount posted upfront as initial margin), the valuation agent (typically the bank), and the timing of margin calls (usually T+1 or same day).
Since the introduction of the uncleared margin rules (UMR) under Basel III / EMIR, the CSA landscape has become more complex. Counterparties above certain notional thresholds must post both variation margin (covering mark-to-market changes) and initial margin (covering potential future exposure) on a segregated basis. ISDA has developed specific CSA documentation — the 2016 Credit Support Annex for Variation Margin (VM CSA) and the Credit Support Annex for Initial Margin (IM CSA) — to comply with these regulatory requirements.
4. Confirmations
A Confirmation is a short document (increasingly electronic, but traditionally paper or telex) that records the specific economic terms of an individual transaction: the trade date, effective date, maturity date, notional amount, fixed rate, floating rate index, payment dates, and any other product-specific terms. The Confirmation is subordinate to the Master Agreement and Schedule — it incorporates them by reference and is governed by their terms. For standardised products such as vanilla interest rate swaps, Confirmations are based on ISDA definitions booklets (the 2006 ISDA Definitions for rates, the 2002 ISDA Equity Derivatives Definitions for equity products) which provide standardised definitions for the economic terms used.
Close-out Netting: The Core Legal Protection
The most commercially critical feature of the ISDA Master Agreement is close-out netting. In the event that one party defaults (an Event of Default) or that a Termination Event occurs, the non-defaulting party (or the party designated in the Schedule) has the right to terminate all outstanding transactions under the agreement simultaneously and calculate a single net sum owed by one party to the other. Without netting, a defaulting party's insolvency administrator might attempt to cherry-pick — continuing to receive payments on transactions in-the-money to the defaulting party while refusing to pay on transactions out-of-the-money. Close-out netting prevents this: the single net amount is all that either party owes the other.
The legal enforceability of close-out netting in insolvency is not automatic — it depends on the insolvency law of the relevant jurisdiction. ISDA maintains an extensive programme of obtaining legal opinions from counsel in dozens of jurisdictions confirming that close-out netting is enforceable under local insolvency law. The ISDA Netting Opinion Programme covers over 60 jurisdictions. Where netting is not legally enforceable, banks are required under Basel III to hold significantly more capital against the gross exposure rather than the net exposure — a powerful incentive for jurisdictions to pass netting-friendly legislation.
Events of Default and Termination Events
The Master Agreement distinguishes between Events of Default (caused by the fault of one party) and Termination Events (triggered by external circumstances not necessarily anyone's fault). Key Events of Default include:
- Failure to Pay or Deliver: failing to make a payment or delivery when due under any transaction
- Breach of Agreement: breaching a material obligation under the Master Agreement
- Cross Default: if elected in the Schedule, defaulting on other financial obligations above a specified threshold
- Bankruptcy: filing for insolvency or having an insolvency proceeding commenced against you
- Misrepresentation: a material representation proving false at the time it was made
Termination Events include Illegality (a change in law makes it illegal to perform obligations), Tax Event (a withholding tax is imposed on payments), and Credit Event Upon Merger (a party merges and the surviving entity's creditworthiness deteriorates significantly). In most cases, Termination Events give both parties the right to terminate, rather than giving one party an automatic advantage.
The ISDA 2002 Agreement: Key Improvements
The 2002 Master Agreement made several important improvements over its 1992 predecessor. The most significant was the replacement of Market Quotation / Loss with Close-out Amount. Under the 1992 Agreement, Market Quotation required the non-defaulting party to obtain quotes from reference market-makers for replacement transactions — a process that proved difficult or impossible for illiquid or exotic transactions during periods of market stress. Close-out Amount is a more flexible concept: the determining party can use any commercially reasonable procedures, including internal valuations, to determine the economic equivalent of the terminated transactions, providing much more practical workability in a stress scenario.
The 2002 Agreement also eliminated the First Method. Under the 1992 Agreement, parties could elect the First Method, under which the non-defaulting party was not required to pay any net amount owed to the defaulting party. This was recognised as potentially unenforceable in some jurisdictions (a solvent counterparty keeping money owed to an insolvent estate could be reversed by insolvency administrators). The Second Method — where the net amount is always paid, in whichever direction it runs — is the only option under the 2002 Agreement.
ISDA SIMM and the Initial Margin Annex
The regulatory requirement to post initial margin on uncleared derivatives (implemented under BCBS/IOSCO margin rules, EMIR in Europe, and equivalent rules in other jurisdictions) created a need for a standardised method of calculating initial margin. ISDA developed the ISDA Standard Initial Margin Model (SIMM) — a risk-sensitive model that calculates initial margin based on the sensitivities of the portfolio to risk factors across multiple asset classes. SIMM allows two counterparties to calculate initial margin using the same methodology, reducing disputes about the amount of margin to be exchanged.
The documentation framework for IM posting uses the ISDA 2016 Phase One Credit Support Annex for Initial Margin (the IM CSA, sometimes called the New York Law IM CSA or the English Law IM CSA depending on governing law). A critical feature of IM posting is segregation: unlike variation margin (which is typically transferred outright), initial margin must be held in a way that is bankruptcy-remote from both parties — typically at a third-party custodian. This ensures that in the event of either party's default, the initial margin is available to cover losses without being swept into the insolvency estate.
Practical Negotiation Points
Negotiating an ISDA Master Agreement is a specialist legal and commercial exercise. Key points of negotiation typically include:
- Threshold amounts in the CSA: The threshold determines how much uncollateralised exposure each party can have before margin must be posted. Banks typically want zero thresholds with counterparties; corporates and asset managers often negotiate positive thresholds to avoid the operational burden of frequent small margin calls.
- Eligible collateral: The range of securities acceptable as collateral is a commercial negotiation. Cash (in major currencies) is universally accepted; government bonds are common. Corporate bonds and equities require careful haircut structures and may not be acceptable to all counterparties.
- Cross-default provisions: Whether, and at what threshold, a default on other obligations triggers an Event of Default under the ISDA is a key credit decision. Banks typically want cross-default provisions; borrowers may resist them.
- Additional Termination Events: Parties frequently negotiate bespoke Termination Events — for example, a downgrade of a party's credit rating below a specified level, a change of control, or a material adverse change in financial condition. These give the non-affected party the right to terminate if the counterparty's credit quality deteriorates significantly.
- Dispute resolution for close-out amounts: In the event of a disagreement about the close-out amount, the 2002 Master Agreement provides some guidance but disputes can still arise. Some parties add bespoke dispute resolution mechanisms to the Schedule.