As Pooled Employer Plans (PEPs) mature under the SECURE Act, employers are asking how Form 5500 reporting and audit requirements really work in this consolidated plan administration model. Understanding these obligations is essential for sound plan governance, robust fiduciary oversight, and operational efficiency in retirement plan administration. This Compliance Corner installment breaks down what sponsors, participating employers, and Pooled Plan Providers (PPPs) need to know to keep ERISA compliance on track and avoid costly surprises.
PEPs were designed to expand access to retirement benefits by allowing unrelated employers to participate in a single 401(k) plan structure overseen by a registered PPP. Unlike a traditional Multiple Employer Plan (MEP), PEPs remove the “common nexus” requirement and centralize many administrative and fiduciary functions. That consolidation brings advantages—streamlined filings, potential fee efficiencies, and standardized processes—but it also concentrates responsibility. Nowhere is that more visible than in Form 5500 preparation, audit scoping, and the documentation PPPs must maintain to demonstrate compliance.
Form 5500 in a PEP environment The core rule remains: a PEP files a single Form 5500 for the plan as a whole. The PPP, as the named plan administrator, typically coordinates the filing, aggregates data from all participating employers, and ensures that the plan’s schedules are complete and accurate. Key points to remember:
- Single plan filing: The PEP submits one consolidated Form 5500 with applicable schedules (e.g., Schedule H for large plans), covering all participating employers. Individual employers generally do not file their own Form 5500 for the PEP. Participating employer attachments: The filing must include a complete list of participating employers and their employer identification numbers (EINs), along with each employer’s percentage of total plan contributions or account balances, as applicable. Accurate employer-level reporting supports transparency, especially for plans experiencing turnover among adopters. Service provider and fee disclosures: Because PEPs standardize services, they often have a single or small set of service providers. The PPP should ensure that Schedule C, 408(b)(2) disclosures, and fee reporting are aligned, clear, and support fiduciary review. Late adopters and leavers: The plan must accurately reflect employers that joined or ceased participation during the year. PPPs should maintain onboarding and offboarding checklists to ensure timely updates to the plan’s EIN listings and contribution allocations.
Audit requirements: small vs. large plan considerations Audits hinge on participant counts and the presence of participant-directed accounts, similar to single-employer plans. For PEPs:
- Participant count: The threshold for a “large plan” audit generally remains 100 participants with account balances at the start of the plan year (taking into account the 80–120 participant rule when applicable). In a PEP, this count aggregates all participants across the plan, not per employer. Single audit, consolidated scope: A large PEP will undergo one plan-level audit, typically of the financial statements and internal controls over financial reporting. The auditor’s work must cover the full plan, including contributions and distributions sourced from every participating employer and payroll location. Limited-scope audits: Where permissible, the plan may pursue a limited-scope audit (now referred to as an ERISA Section 103(a)(3)(C) audit), relying on certified investment information from qualified institutions. PPPs should coordinate with recordkeepers and trustees to ensure timely, accurate certifications and reconciliations across pooled and participant-directed investments. Employer payroll interfaces: Because employer payroll feeds drive contribution accuracy, auditors frequently sample across multiple participating employers. PPPs should standardize payroll file formats, reconciliation routines, and error-resolution SLAs with each employer or payroll vendor to reduce findings.
The PPP’s role in ERISA compliance and fiduciary oversight The SECURE Act places the PPP at the center of PEP operations. The PPP is typically the plan administrator and primary fiduciary for administrative functions, often assuming 3(16) fiduciary responsibilities and engaging 3(38) or 3(21) investment fiduciaries. This central role is important for audits and Form 5500:
- Documentation discipline: Maintain a compliance calendar covering the Form 5500 timeline, audit milestones, blackout notices, QDIA notices, and required disclosures. Archive adoption agreements, employer joinders, payroll certifications, and operational reviews. Controls testing: Establish and test controls for eligibility, auto-enrollment, deferral changes, loan processing, hardship withdrawals, and contribution remittances. Auditors will request evidence that these controls operate consistently across employers. Data integrity: Implement standardized data validations at intake (date of birth, hire date, compensation definitions, YTD wages, pre-tax vs. Roth breakdowns). Errors propagate quickly in a PEP, so front-end checks reduce remediation later. Fee governance: A documented fee benchmarking and revenue-sharing policy protects participants and supports fiduciary oversight. If using ERISA budget accounts or revenue credits, align reporting to Schedule H and participant statements.
Comparing PEPs with MEPs and single-employer plans While both PEPs and MEPs file a single Form 5500, the PPP-led model places clearer accountability on one entity for consolidated plan administration. In an open MEP, administrative responsibilities can be more diffuse. In both, however, DOL and IRS expect rigorous plan governance and accurate employer-level tracking. Compared to single-employer 401(k) plan structures, PEPs can lower filing complexity for each employer, but demand stronger central controls and communication protocols to keep data synchronized across many payroll environments.
Practical steps to get audit-ready
- Start early: Kick off audit readiness 90–120 days before year-end. Confirm testing periods, sample sizes, and key contacts at each participating employer. Clean rosters: Reconcile participant counts, terminated status, and zero-balance accounts. Ensure forfeiture usage and true-up policies are documented and consistently applied. Tie-outs and reconciliations: Perform monthly cash and share reconciliations between the recordkeeper and trustee/custodian, and trace contributions from payroll to participant accounts with aging reports. SOC reports and vendor oversight: Obtain and review SOC 1 Type 2 reports for recordkeepers and custodians. Document complementary user entity controls (CUECs) and verify they are in place across all employers. Corrective procedures: Maintain a playbook for common errors (late deposits, missed deferrals under auto-enrollment, incorrect compensation). Leverage EPCRS for IRS corrections and Voluntary Fiduciary Correction Program where appropriate, documenting steps and participant make-whole amounts. Communication cadence: Publish a compliance newsletter or dashboard to participating employers, flagging key dates, policy changes, and any action items that affect Form 5500 accuracy.
Common pitfalls and how to avoid them
- Incomplete employer listings: Cross-check the participating employer schedule against executed joinders, contribution files, and billing records before filing. Misapplied compensation definitions: Standardize plan compensation definitions; audit payroll mappings after system changes or M&A events. Late or batched contribution deposits: Monitor deposit timeliness by employer; set alerts for variances from normal funding cycles. Unreconciled forfeitures: Document how forfeitures are used (expense offsets, contributions, fees) and reflect activity accurately on financial statements and Form 5500. Disconnected amendments: Ensure plan amendments and restatements are operationally implemented across all employers, not just documented by the PPP.
Looking ahead: regulatory scrutiny and best practices Regulators are increasingly focused on the quality of consolidated filings and whether PPPs truly deliver improved outcomes in retirement plan administration. Expect continued guidance around data integrity, fee transparency, and cybersecurity. PPPs that invest in automation, standardized employer onboarding, and proactive fiduciary oversight will not only simplify Form 5500 season but also elevate participant outcomes.
Questions and Answers
Q1: Do individual participating employers in a PEP need to file their own Form 5500? A1: No. The PEP files a single, consolidated Form 5500. However, employers must provide accurate data to the PPP and will be listed in the filing with identifying details and their relative share.
Q2: When does a PEP require an audit? A2: A PEP generally needs an audit when it is a “large plan,” typically 100 or more participants with account balances at the beginning of the year (considering the 80–120 rule). The audit is performed at the plan level and covers all employers.
Q3: How does a PPP help with ERISA compliance? A3: The PPP coordinates plan governance, oversees consolidated plan administration, manages filings, engages fiduciary partners, and implements control frameworks and vendor oversight, all to maintain fiduciary oversight and regulatory compliance.
Q4: What differentiates a PEP from a traditional MEP for reporting? A4: Both file a single Form 5500, but PEPs operate under the SECURE Act with a registered PPP bearing primary administrative responsibility. This centralization clarifies accountability and facilitates standardized reporting and audits.
Q5: What should employers focus on to support a clean audit? A5: Timely and accurate payroll data, contribution remittance tracking, adherence to plan compensation definitions, prompt error correction, and responsive communication with the PPP and auditor.