Cafeteria Plans and Section 125 Requirements

Section 125 of the Internal Revenue Code establishes the legal framework that allows employees to pay for certain benefits using pre-tax dollars — a mechanism known formally as a cafeteria plan. This page covers the definition and qualifying criteria, the operational mechanics of plan structure, common employer configurations, and the boundaries that determine when a benefit qualifies for pre-tax treatment. Understanding these requirements is foundational for any employer offering tax-advantaged health accounts as part of a compensation package, and connects directly to the broader regulatory context for health savings that governs account-based benefit design.

Definition and scope

A cafeteria plan, as defined under IRC § 125, is a written plan maintained by an employer that allows participating employees to choose between at least one taxable benefit — typically cash — and one or more qualified benefits. The defining feature is the election: because the employee explicitly chooses between a taxable and a non-taxable option, the IRS treats the foregone cash as never received, meaning it is excluded from gross income and not subject to Federal Insurance Contributions Act (FICA) withholding.

The qualified benefits that may flow through a Section 125 plan include:

  1. Health insurance premiums — employee contributions toward employer-sponsored group health coverage
  2. Health Care Flexible Spending Accounts (FSAs) — for reimbursement of qualified medical expenses
  3. Dependent Care FSAs — for eligible child and adult dependent care costs
  4. Accident and disability insurance
  5. Group-term life insurance (up to $50,000 of coverage, per IRS Publication 15-B)
  6. Adoption assistance programs
  7. Health Savings Account (HSA) contributions made through payroll on a pre-tax basis

Benefits that cannot flow through a cafeteria plan include scholarships, educational assistance beyond the Section 127 limit, and most fringe benefits governed by other IRC sections. Long-term care insurance is also explicitly excluded under IRC § 7702B(d).

How it works

A cafeteria plan operates through a binding annual election cycle. Before the plan year begins, employees elect the dollar amount or benefit options they want. Once the election is made, it is generally irrevocable for the plan year except in specific circumstances recognized by the IRS — a qualified status change such as marriage, divorce, birth, adoption, or a change in employment status.

The mechanics follow a structured sequence:

  1. Plan document creation — The employer drafts a written plan document meeting the requirements of Treasury Regulation § 1.125-1. The document must name the plan year, list eligible employees, identify the menu of benefits, and specify election procedures.
  2. Eligibility determination — The plan must define which employees may participate. Sole proprietors, partners in a partnership, 2-percent-or-greater shareholders in an S corporation, and most self-employed individuals are prohibited from participating in a cafeteria plan under IRC § 125(d)(1).
  3. Annual open enrollment — Eligible employees make prospective elections during an enrollment window before the plan year starts.
  4. Payroll reduction — The employer reduces each employee's gross wages by the elected amount, channeling the funds into the designated benefit.
  5. Nondiscrimination testing — The plan must pass three separate tests each plan year: the eligibility test, the contributions and benefits test, and (for FSAs) the utilization test, as outlined in IRS Notice 2005-42. If a plan fails these tests, highly compensated employees lose the tax exclusion on their benefits.

The plan year is typically 12 consecutive months. Short plan years are permitted under limited circumstances, such as initial plan establishment.

Common scenarios

Scenario 1: Employer premium-only plan (POP)
The simplest cafeteria plan is a Premium-Only Plan, which covers only one qualified benefit — the employee's share of group health insurance premiums. A POP requires a formal plan document even though only one benefit is offered. Employers with as few as 2 employees can and do maintain POPs to eliminate FICA taxes on employee premium contributions. The employer also avoids FICA on its matching 7.65% share of those redirected wages, creating a direct payroll tax reduction.

Scenario 2: Full cafeteria plan with FSA
Larger employers typically add a Health Care FSA alongside the premium election, giving employees a menu of two qualifying benefits. The IRS caps Health Care FSA elections at $3,300 for the 2025 plan year (IRS Revenue Procedure 2024-25), with the Dependent Care FSA capped at $5,000 per household ($2,500 for married filing separately) under IRC § 129.

Scenario 3: HSA-compatible plan design
An employee enrolled in a qualifying High-Deductible Health Plan (HDHP) may contribute to an HSA through payroll. When HSA contributions are made through a Section 125 cafeteria plan, they are excluded from both income tax and FICA. Contributions made outside of payroll — directly to the HSA trustee — receive an income tax deduction but not the FICA exclusion. This distinction makes cafeteria plan routing of HSA contributions meaningfully more valuable on an annualized basis. The main information hub for health savings accounts explains these mechanics in further detail.

Scenario 4: Dependent Care FSA as standalone
An employer may offer a Dependent Care FSA through a Section 125 plan without offering any health benefit. The $5,000 statutory limit applies regardless of how many dependents a household has, and the benefit is subject to the earned income limitation — the exclusion cannot exceed the lower of the employee's earned income or the spouse's earned income.

Decision boundaries

Not every employer arrangement qualifies as a legitimate Section 125 plan, and several conditions create hard boundaries around pre-tax treatment.

Written plan requirement: Treasury Regulation § 1.125-1(c) states that a cafeteria plan must be a written plan. Oral arrangements do not qualify, and absent a compliant document, all benefits run through the plan are treated as taxable compensation, regardless of how payroll is processed.

Timing of elections: Elections must be made before the period of coverage begins. Retroactive elections are prohibited. An employee who misses open enrollment cannot make a mid-year election unless a qualifying status change applies, as defined in Treasury Regulation § 1.125-4.

Employer vs. employee contributions: Only employee salary reductions — not employer contributions — are technically "elected" under Section 125. Employer contributions to an FSA or HSA can be made outside the Section 125 framework and are excluded from income under IRC §§ 106 and 223 respectively, without requiring a cafeteria plan.

Discriminatory plan consequences: If nondiscrimination testing reveals that the plan disproportionately favors highly compensated employees (generally defined as earning more than $135,000 in the prior year for 2024, per IRS Publication 15) or key employees, those individuals must include the value of their benefits in gross income. Rank-and-file employees are unaffected by a discrimination failure.

S corporation shareholder exclusion: A shareholder owning 2% or more of an S corporation is treated as a partner for fringe benefit purposes under IRC § 1372, making them ineligible to receive tax-free benefits through the corporation's cafeteria plan. Premiums paid on their behalf must be included in W-2 wages.

Simple cafeteria plans for small employers: Employers with 100 or fewer employees in both preceding years may establish a Simple Cafeteria Plan under IRC § 125(j), added by the Affordable Care Act. Simple cafeteria plans provide a safe harbor from nondiscrimination testing, provided the employer meets minimum contribution requirements — either 2% of each eligible employee's compensation or a matching contribution of 6% of compensation.

References

The law belongs to the people. Georgia v. Public.Resource.Org, 590 U.S. (2020)