Glossary/Government, nonprofit and ERISA

Plan sponsor

The plan sponsor is the employer or organization that establishes and maintains an employee benefit plan; it is distinct from the plan administrator and trustee, though one party often holds several roles.

CORAA TeamUpdated November 5, 2026

Definition

ERISA section 3(16)(B) defines the plan sponsor as the employer that establishes or maintains the plan, the employee organization for a union plan, or the association or committee that does so for a multiemployer plan. The sponsor makes settlor decisions, such as adopting the plan or changing benefits. The plan administrator named in the plan document, or the sponsor by default under section 3(16)(A), runs the plan and signs the Form 5500. A trustee or custodian holds the assets. Roles overlap in small plans.

Why it matters in an audit or review

The auditor of the plan deals with the plan administrator, usually through the sponsor's finance team, and obtains management representations about plan operations. Sponsor responsibilities include remitting contributions on time, choosing and monitoring service providers, and maintaining the plan document. The plan is a separate reporting entity, so the sponsor's own financial statements do not substitute for the plan's statements.

Example

Illustrative: a company adopts a 401(k) plan, names its CFO as plan administrator, and hires a third-party recordkeeper and a trust company as custodian. The company is the sponsor, the CFO's role is administration, and the custodian holds the assets.

Common mistakes

  • Assuming the recordkeeper or custodian is responsible for compliance that belongs to the sponsor.
  • Mixing up the sponsor's expenses with plan expenses paid from plan assets.

Sources

Definitions paraphrase AICPA and FASB guidance; read the standard itself before relying on a requirement. Example figures are illustrative. This page is guidance, not professional advice. Report an error

Standards

ERISA 3(16)AU-C 703

Related terms

  • ERISA 401(k) plan audit
    An ERISA 401(k) audit is the annual audit of a plan's financial statements by an independent qualified public accountant, required for plans filing as large plans and attached to the Form 5500.
  • Form 5500
    Form 5500 is the annual return and report that employee benefit plans file with the DOL, IRS, and PBGC, and for large plans it must include the independent auditor's report on the plan financial statements.
  • Management representation letter
    A management representation letter is a written statement from management to the auditor confirming responsibilities, completeness of information and specific matters, and it is required evidence in every audit of financial statements.

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