For calendar-year welfare benefit plans with a timely Form 5558 extension, the 2025 Form 5500 is generally due October 15, 2026. Before submitting, employers should verify the plan information, participant counts, insurance schedules, signatures, and electronic filing results.
An extension provides additional time to file. Missing records, conflicting information, and unsigned submissions still require attention.
The review should focus on the reporting year. A filing submitted in September or October 2026 for the 2025 plan year must reflect the benefits and arrangements applicable to that earlier period. Current enrollment reports and renewal documents may not provide the right information.
Confirm the Form 5500 Extension Deadline
Start with the plan-year end date and the extension request record. For a plan year ending December 31, 2025, the regular filing deadline was July 31, 2026. A timely Form 5558 generally extends that deadline to October 15, 2026.
October 15 does not apply to every welfare plan. Noncalendar plan years have different deadlines, and applicable disaster relief may change a particular plan’s filing date. Some welfare plans qualify for a filing exemption; providing employee benefits does not automatically require a Form 5500.
Locate the extension record and confirm that it identifies the correct employer, plan number, and reporting period. If someone else handled the request, ask for the record supporting it. Do not rely solely on an email saying that the filing is “on extension.”
A Form 5558 extension is available only once for the filing. Employers should not plan on obtaining another extension through a second Form 5558.
Verify Form 5500 Plan Information
Compare the draft filing with the plan documents and prior-year report. Review the official plan name, employer identification number, three-digit plan number, sponsor address, and administrator information.
The EIN and plan number identify the filing across reporting years. They should also agree across the main form and its schedules. A business name change, acquisition, or change in service provider should prompt a review of the correct reporting treatment before identifiers are changed.
When employer or plan information has changed, confirm that the filing reports the change where required. Copying a new EIN into the draft without addressing the prior reporting information can create an unexplained break in the filing history.
Keep the document supporting each change with the review records. That gives the employer and preparer a reference if the draft or a later inquiry raises questions.
Match the Filing to the Benefits Provided During the Plan Year
Use the plan documents, amendments, and insurance records effective during the reporting period to identify which benefits belong in the filing.
A practical review should answer:
- Which benefits were included under this plan?
- Were benefits added or removed during the year?
- Did a carrier or funding arrangement change?
- Did the employer amend, combine, or terminate a plan?
- Does the draft reflect the documented plan structure?
For example, a dental benefit included in a welfare plan during 2025 should not disappear from the review simply because the employer changed its dental coverage for 2026. Similarly, a carrier used earlier in the reporting period may still need to provide information even though the employer no longer works with that carrier.
Do not assume each insurance policy represents a separate ERISA plan. Confirm how the benefits are organized under the governing documents before deciding which filing they belong to.
If the records are incomplete, use BC²’s Form 5500 preparation checklist to organize the information needed for preparation.
Review Form 5500 Participant Counts
Identify the source and measurement date for every participant figure in the draft. A current employee roster may not establish participation at the beginning or end of the reporting year.
Payroll headcount, medical enrollment, and the number of people covered by an insurance contract can differ. A welfare plan may include several benefits, and an employee who declined medical coverage may participate in another benefit under that plan.
Ask the preparer to confirm the applicable counting instructions before using totals from a carrier invoice or enrollment system. Avoid adding together overlapping enrollment lists without checking whether the same individuals appear in more than one benefit.
For each count, retain the underlying report and a short explanation of the calculation. If the result differs substantially from the prior year, investigate the reason. Hiring, reductions in workforce, eligibility changes, or a change in included benefits may explain it. The difference should be understood before submission.
Review Form 5500 Schedule A Information
Schedule A reports insurance information for reportable contracts associated with a plan’s Form 5500. The employer and preparer should identify all applicable contracts before treating the insurance information as complete.
Create a working list of carriers and contracts for the reporting period. Mark which information has arrived, what remains outstanding, and who is following up. Receiving information from the medical carrier does not establish that every reportable contract has been addressed.
Check the Contract Details
Review each carrier’s information for:
- Insurance company name and identifying information
- Policy or contract number
- Contract beginning and ending dates
- Applicable premiums and benefit information
- Fees and commissions
- Persons covered at the end of the policy or contract year
If a policy number or coverage description is unfamiliar, reconcile it with the employer’s insurance records. Do not assign information to a plan solely because it arrived in the same carrier email as another policy.
Use the Applicable Contract Year
The insurance contract year may differ from the plan year. Schedule A generally uses the contract year ending with or within the plan year. The DOL Form 5500 instructions explain this reporting rule.
For a calendar-year 2025 plan, a contract running from July 1, 2024 through June 30, 2025 generally supplies the relevant contract-year information. The most recently received renewal package may cover a different period.
Follow Up on Missing Information
Request outstanding carrier information promptly and keep a record of the requests. Identify the policy, reporting period, and missing items so the carrier can respond to a specific request.
If information remains unavailable, ask the preparer how the applicable instructions address the missing data. Do not insert unsupported estimates or omit a required schedule simply to complete the draft.
Not every insurance-related arrangement requires Schedule A reporting. Do not file Schedule A for an administrative-services-only (ASO) contract.
Compare Your Form 5500 With the Prior Filing
Review the current draft and prior filing side by side. Focus on changes that need an explanation, including new identifiers, missing schedules, different benefit arrangements, and substantial shifts in reported figures.
A difference may be correct. A dental carrier replacement, for example, can explain why one carrier disappears and another appears. Ask whether the supporting records account for the full change rather than forcing the filing to match last year.
Also confirm that the main form accurately describes the schedules attached. Check the listed schedule count, identifying information, and benefit arrangements against the completed package.
Review any first-report or final-report designation separately. Changing carriers does not, by itself, establish that the underlying welfare plan ended. If the draft is marked final, confirm the basis with the preparer and the plan records.
Use one issue list for unresolved questions. Give each item an owner, a requested document or answer, and a target response date. This prevents corrections discussed in separate emails from being missed in the final version.
Arrange Signatures Before the Submission Date
Confirm who will review the completed filing, who will authorize it, and who will submit it electronically. Check availability before the deadline approaches.
Where the plan administrator signs electronically, confirm that the necessary EFAST2 access is working. If a service provider uses an authorized signing procedure, confirm the required authorization and signed documents with that provider. Do not share personal signing credentials as a shortcut.
The plan must retain the manually signed copy required by DOL guidance. Agree on who will collect and store it so the record is available after submission.
Avoid approving an early draft while unresolved changes remain. Make sure the person responsible for the filing reviews the version intended for submission.
Confirm Your Form 5500 Submission
A prepared draft or an email attachment sent to a provider does not establish that the Form 5500 was filed. Obtain confirmation of submission and review the EFAST2 status, including any errors or warnings.
The DOL EFAST2 guidance explains signatures, submissions, and status checks. Electronic screening does not verify every underlying fact; the preparer must still reconcile the reported information with the records.
Save the submitted report, schedules, attachments, acknowledgment, and relevant status information together. Assign responsibility for reviewing any subsequent messages and resolving issues identified after transmission.
If a correction becomes necessary, determine the appropriate filing response promptly. Do not assume an error can be addressed by sending an isolated replacement page.
Leave Time for Outstanding Questions
Set an internal completion date before the legal deadline. Work backward from submission to allow time for employer review, signatures, carrier responses, and corrections.
The most useful question for the preparer is: “What specific item is preventing this filing from being ready?” Ask for the outstanding document or decision, who must supply it, and when it is needed.
BC²’s explanation of why Form 5500 filing slows down addresses information gaps that can interrupt preparation. Use it to identify follow-up work while there is still time to obtain answers.
Address a Missed Deadline Promptly
If the extended deadline passes before a required filing is completed, establish what was submitted, when it was submitted, and whether an extension or other relief applied.
Eligible plan administrators may be able to use the DOL’s Delinquent Filer Voluntary Compliance Program to submit overdue reports with reduced penalties. Eligibility and program requirements must be reviewed; penalty relief is not automatic.
BC² provides DFVCP assistance for late filings. Provide any government correspondence when requesting help because it may affect the available response.
Form 5500 Extension Deadline Questions
When is the extended deadline for a calendar-year plan?
For a plan year ending December 31, 2025, a timely Form 5558 generally extends the Form 5500 deadline to October 15, 2026. Confirm whether any applicable relief changes that date for the plan.
Can an employer request another Form 5558 extension?
Form 5558 provides a one-time extension. Filing another Form 5558 does not create an additional extension for the same annual report.
Does each insurance benefit require a separate Schedule A?
Schedule A reporting depends on the applicable insurance contracts and reporting rules. The number of benefit types alone does not determine the number of schedules. Have the preparer review the contracts and permissible grouping before finalizing the package.
How can an employer confirm that the filing was submitted?
Obtain the EFAST2 acknowledgment and review the filing status and any associated messages. Keep the submitted version and confirmation in the plan’s records. If a provider filed on the employer’s behalf, request that documentation from the provider.
Get Help Before the Form 5500 Extension Deadline
BC²’s Form 5500 preparation services include current and delinquent filing preparation, review of current filings, and electronic filing assistance.
If your extended filing is unfinished, provide the draft, prior report, extension record, and outstanding-information list when requesting assistance. Those records help identify what remains to be completed.
Request a proposal from BC² for help with your welfare benefit plan’s Form 5500 filing.
