Select Page

The ISDA Collateral Agreement Interest Rate Definitions: Understanding Key Concepts

The International Swaps and Derivatives Association (ISDA) Collateral Agreement governs the exchange of collateral between parties involved in OTC derivatives transactions. One crucial aspect of this agreement is the interest rate that applies to the collateral. The ISDA has defined several interest rate terms that parties must adhere to when entering into a collateral agreement. In this article, we will discuss some of the essential ISDA collateral agreement interest rate definitions.

Effective Date

Effective date refers to the date when a collateral agreement comes into force. This date is significant because it determines when the interest obligations under the agreement begin. For example, if the effective date is July 1, 2021, parties must calculate and pay interest on collateral from that date onwards.

Interest Period

The interest period is the period for which interest is calculated. The length of the interest period varies depending on the agreement and can be anything from one day to a year. Interest is calculated on a per-day basis, so the longer the interest period, the higher the interest charges. Parties must agree on the interest period before entering into a collateral agreement.

Interest Payment Date

An interest payment date, as the name suggests, is the date when interest payments are due under the collateral agreement. This date is typically based on the interest period. For example, if the interest period is one month, parties usually agree that interest will be paid at the end of that month. Note that interest payment dates must be specified in advance to avoid any confusion or disputes.

Interest Rate

The interest rate is the rate at which interest is charged on collateral. The ISDA has defined several interest rate terms, including LIBOR (London Interbank Offered Rate), Fed Funds Effective Rate, and the Overnight Bank Funding Rate. Parties must agree on the interest rate that applies to their collateral agreement. It is essential to note that the interest rate can change over time, depending on market conditions.

Calculation Agent

The calculation agent is an independent third-party responsible for calculating interest charges under the collateral agreement. The calculation agent must be agreed upon by both parties before entering into the agreement. The calculation agent`s role is to ensure that interest charges are calculated correctly and that interest payment dates are observed.


Understanding the key ISDA collateral agreement interest rate definitions is essential when entering into OTC derivatives transactions. Effective date, interest period, interest payment date, interest rate, and calculation agent are all crucial concepts that parties must agree upon before entering into a collateral agreement. Failure to understand these concepts can lead to confusion, disputes, and financial losses. As a professional, it is crucial to convey these concepts accurately and succinctly to ensure that readers have a clear understanding of the topic.