Party in interest

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Party in interest

An ERISA-specified individual—such as an administrator, officer, fiduciary, trustee, custodian, or counsel—who is prohibited from making certain transactions involving a retirement plan. A trustee, for example, would be prohibited from using an IRA as collateral for a loan.

Party in Interest

Anyone prohibited under ERISA from using a retirement plan for one's own interests. For example, the investment manager of a 401(k) may not use that 401(k) as collateral on a personal loan. See also: Fiduciary Responsibility.