What does a Section 125 plan administrator do?
A Section 125 plan administrator runs the legal and operational side of a cafeteria plan so employees can keep paying for benefits with pre-tax dollars. A cafeteria plan, also called a Section 125 plan, is the IRS-approved arrangement that lets employees move premiums and certain benefits out of taxable wages. The tax savings only hold while the plan follows the rules.
The core jobs are the same for a 5-person company and a 500-person company:
| Administration task | What it involves |
|---|---|
| Plan document | The written plan the IRS requires before any pre-tax deduction starts |
| Summary plan description (SPD) | The plain-language version employees receive |
| Eligibility rules | Who can join, when, and on what terms |
| Enrollment and elections | Collecting each employee's choices for the plan year |
| Payroll setup | Coding deductions as pre-tax for federal income tax and FICA |
| Mid-year changes | Approving election changes only for IRS-permitted life events |
| Nondiscrimination testing | Showing each year that the plan does not favor owners, officers or high earners |
| Records and renewals | Keeping documents, elections and test results ready for an audit, and updating for new IRS limits |
If you are new to cafeteria plans, the Section 125 plan guide explains the basics. For the election-change rules, see our page on Section 125 qualifying events.
Can you self-administer a Section 125 plan?
Yes. An employer can self-administer a Section 125 plan, and some very small employers running only a premium only plan do. The IRS does not require a third-party administrator. It does require the plan document, correct payroll treatment, and annual nondiscrimination testing, whoever does the work.
Self-administering usually breaks down in three places:
- The plan document. Payroll starts taking pre-tax deductions, but no written plan exists. Without the document, every deduction can be treated as taxable wages.
- Mid-year changes. An employee asks to drop coverage in May with no qualifying event, and payroll makes the change. That is a violation of the irrevocable election rule.
- Testing. Small companies with family ownership often fail the 25% key employee concentration test without knowing it until an audit.
A premium only plan is the simplest structure to run in-house. Plans with health FSAs, dependent care accounts or multiple benefit choices are where an administrator saves the most time and risk.
Do you offer nondiscrimination testing services for cafeteria plans?
Summit Health Benefits provides nondiscrimination testing support as part of plan administration. Every Section 125 plan must pass three annual tests: the eligibility test, the contributions and benefits test, and the key employee concentration test. Summit reviews your ownership and payroll structure before the plan year starts, so problems are handled in the plan design instead of discovered at year-end.
For the formulas, the 2026 thresholds and a worked example, read our guide to Section 125 nondiscrimination testing.
How does Summit Health Benefits administer your plan?
Summit Health Benefits sets up and administers Section 125 cafeteria plans for W-2 employers in any industry, full-time and part-time staff included. The program has been reviewed by ERISA attorneys and audited by a top CPA firm.
What Summit handles:
- Plan documents. The written plan document, the summary plan description and the required compliance documentation.
- Eligibility and benefits. Plan design built around your real headcount and ownership.
- Payroll coordination. Election data and pre-tax deduction setup with your payroll provider.
- Employee communication. Clear enrollment materials, plus a benefits card, mobile app and member portal for the benefits employees use.
- Testing support. Annual nondiscrimination testing support, with owner and family elections reviewed up front.
Summit also includes a benefit package employees use day to day, which is shown in the plan card below.
Schedule a Consultation With Our Section 125 Plan Experts
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What does Section 125 plan administration cost?
Summit Health Benefits charges a $35 administration fee per enrolled employee per month. That fee is paid out of the employer FICA savings the plan creates. Summit clients typically recapture $91 to $136 per enrolled employee per month in employer FICA, so the net employer benefit after the fee is about $56 to $101 per enrolled employee per month. Employees typically see take-home pay rise by $70 to $110 per month.
To see the numbers for your own payroll, run the Section 125 savings calculator. For how the payroll tax math works, see our guide to maximizing FICA tax savings.
How do you get started?
Most employers start with a short conversation: headcount, payroll provider, and how any pre-tax deductions are set up today. If you already know you want to move forward, you can build your Section 125 plan online in a few minutes.
Frequently Asked Questions
What does a Section 125 plan administrator do?
A Section 125 plan administrator maintains the plan document and summary plan description, sets eligibility rules, collects elections, coordinates pre-tax payroll deductions, approves mid-year changes only for IRS-permitted events, supports annual nondiscrimination testing, and keeps records ready for an IRS audit.
Is a third-party administrator required for a Section 125 plan?
No. The IRS does not require a third-party administrator for a Section 125 plan. The employer is still responsible for a written plan document, correct payroll treatment, irrevocable elections and annual nondiscrimination testing, which is why many employers use an administrator.
Can a small business self-administer a cafeteria plan?
A small business can self-administer a cafeteria plan, most often a simple premium only plan. Self-administration usually fails on missing plan documents, mid-year election changes without a qualifying event, and skipped nondiscrimination testing.
Does Summit Health Benefits provide nondiscrimination testing for cafeteria plans?
Yes. Summit Health Benefits provides nondiscrimination testing support as part of Section 125 plan administration and reviews ownership and payroll structure before the plan year starts to reduce the risk of a failed test.
How much does Section 125 plan administration cost with Summit Health Benefits?
Summit Health Benefits charges $35 per enrolled employee per month. The fee is paid from the employer FICA savings the plan creates, and the net employer benefit after the fee is typically about $56 to $101 per enrolled employee per month.
Which employees can join a Summit Section 125 plan?
All W-2 employees can participate, full-time or part-time, in any industry. 1099 contractors, sole proprietors, partners and more-than-2% S corporation shareholders cannot make pre-tax elections under a Section 125 plan.