Calculation Agent

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Calculation Agent
/ˌkælkjʊˈleɪʃən ˈeɪʤənt/ (n.)
One who calculates things on behalf of contracting counterparties. In theory, under any kind of contract, but in practice, mainly in the ISDA extended fan-fiction universe, and in the documentation of bonds. To be fruitlessly compared and contrasted with a determination agent, who determines things on behalf of contracting counterparties.

ISDA Anatomy™
Secret Co-Calculation Agent Georgie Esterman, (von Sachsen-Rampton, 1953)
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Do “calculation” and “determination” differ? Not as far as this correspondent can see. But that won't stop over-enthusiastic members of the bar waxing lengthily about how they do.[1]

In the ISDA

The ISDA Schedule does contain an election for Calculation Agent but, curiously, the term isn’t otherwised defined or used in either version of the ISDA Master Agreement. The parties may spend a great deal of fruitless energy in haggling, at Part 4(e) of the Schedule, about who should be the Calculation Agent, and what rights the other poor sap should have to challenge its determinations.

I hope it isn’t too disappointing to hear if your counterparty is a broker-dealer and you are not, your counterparty will insist on being the calculation agent.

How strongly each feels about this will depend on the sort of products they’re expecting to trade: FX and simple equity derivatives have a deep, liquid, observable markets, and as there’s little scope for picking a fight, a dealer Calculation Agent may not be bothered about ceding rights to dispute its calculations. Expect a different reaction should you seek to second-guess your dealer’s marks on exotic credit derivatives, on the other hand. These rely enormously on the dealer’s internal models, pricing curves and other kinds of idiosyncratic financial alchemy that are almost certainly unique to the dealer in question.

Co-calculation agent

There’s an old saying:

A co-calculation agent is no calculation agent.

However superficially neat this might seem to the age-old valuation dilemma of who should price the trade, it suffers in one important respect: unless the parties agree on the determination, the parties — er — won't agree on the determination. And then what do you do?

Other ISDA booklets

The term is defined separately in each definition booklet:

See also

  1. Pedants will note the different roles played by the Calculation Agent and the Determining Party in the 2002 ISDA Equity Derivatives Definitions.