12.4 Section 125 / Cafeteria Plans and Self-Funding
Key Takeaways
- Section 125 cafeteria plans let employees choose qualified benefits paid with pre-tax dollars, lowering income tax and FICA.
- FSAs are use-it-or-lose-it and plan-tied; HSAs (paired with an HDHP) are employee-owned and roll over; HRAs are employer-funded only.
- Self-funded plans pay claims from employer assets, are governed by ERISA, and largely avoid state mandates and premium taxes.
- Specific stop-loss caps any one person's claims above an attachment point; aggregate stop-loss caps total group claims for the year.
- MEWAs let small employers pool to self-fund; Taft-Hartley trusts provide jointly administered multi-employer union coverage.
Section 125 Cafeteria Plans
A cafeteria plan, authorized by Section 125 of the Internal Revenue Code, lets employees choose among a menu of qualified benefits and pay for selected ones with pre-tax dollars. By reducing taxable wages, both employee income tax and FICA withholding fall. The defining feature: employees pick the mix that fits their needs, like choosing items in a cafeteria. A plan must offer at least one taxable benefit (usually cash) and at least one qualified nontaxable benefit (such as health coverage) to meet Section 125 rules.
Common Cafeteria Components
- Premium-only plan (POP) — employees pay their share of health premiums pre-tax.
- Flexible Spending Account (FSA) — employees set aside pre-tax dollars for medical or dependent-care costs. FSAs follow a use-it-or-lose-it rule: unused funds are generally forfeited at year-end (subject to a limited carryover or grace period if the plan allows).
- Full cafeteria plan — a broad menu allowing cash or various qualified benefits.
| Account | Funding | Key Rule |
|---|---|---|
| FSA | Pre-tax salary reduction | Use-it-or-lose-it; tied to employer plan |
| HSA | Pre-tax/deductible; paired with HDHP | Owned by employee; funds roll over |
| HRA | Employer-funded only | Employer sets reimbursement; not employee-funded |
A Health Savings Account (HSA) must be paired with a High-Deductible Health Plan (HDHP). The HSA is owned by the employee, contributions are tax-advantaged, balances roll over year to year, and after age 65 funds may be withdrawn for non-medical use (taxed but no penalty). Contrast the HRA, which is funded solely by the employer.
Section 125 Election Rules, ERISA Preemption, and a Tax-Savings Worked Example
Two compliance points round out this topic. First, Section 125 elections are irrevocable for the plan year unless the employee has a qualifying life event (marriage, divorce, birth/adoption, change in employment status, or a dependent gaining/losing eligibility). This irrevocability is the trade-off for pre-tax treatment and is a frequent exam point — an employee cannot simply change an FSA election mid-year because they overestimated expenses.
Why self-funding escapes state mandates
Self-funded plans are governed by ERISA, whose preemption clause overrides state insurance laws. That is why a self-funded employer need not include a state-mandated benefit (e.g., a specific infertility or chiropractic mandate) that a fully insured plan in the same state must cover, and why self-funded plans avoid state premium taxes. Stop-loss insurance purchased by the employer is an insurance contract and is state-regulated, but it indemnifies the employer, not the employees.
Worked pre-tax savings example
An employee in the 22% federal bracket plus 7.65% FICA elects $2,000 of health premium through a premium-only Section 125 plan. Paying with pre-tax dollars avoids roughly 22% + 7.65% = 29.65% in combined tax, saving about $593 versus paying the same premium with after-tax wages. The employer also saves its 7.65% FICA match on the reduced taxable wage base — illustrating why cafeteria plans are nearly universal. The forfeiture risk falls only on FSA balances, not on the premium-only election, which simply reroutes a known premium pre-tax.
Which rule applies to a typical health Flexible Spending Account (FSA) under a Section 125 plan?
Self-Funding and Stop-Loss
Instead of buying a fully insured contract, a large employer may self-fund (self-insure), paying employee claims directly from company assets. Self-funded plans are governed primarily by ERISA at the federal level and are generally exempt from state insurance mandates and premium taxes — a key reason large employers choose this route. The employer bears the claims risk, so it usually buys stop-loss insurance to cap losses.
Stop-loss comes in two forms:
- Specific (individual) stop-loss — reimburses claims on any one covered person above a set dollar attachment point.
- Aggregate stop-loss — reimburses total group claims that exceed an expected threshold for the year.
Worked Example — Stop-Loss Reimbursement
An employer self-funds and carries specific stop-loss with a $75,000 attachment point. One employee incurs $210,000 in claims during the year. The employer pays the first $75,000; the specific stop-loss reimburses the excess of $210,000 - $75,000 = $135,000. Separately, assume aggregate stop-loss attaches at 125% of expected claims. If expected claims are $2,000,000, the aggregate layer responds only after total claims exceed $2,000,000 x 1.25 = $2,500,000.
MEWAs and Plan Structures
A Multiple Employer Welfare Arrangement (MEWA) lets several small employers band together to self-fund. Fully insured MEWAs are state-regulated; self-funded MEWAs face complex dual federal/state oversight due to past abuse. A Taft-Hartley trust provides multi-employer coverage for unionized workers, jointly administered by labor and management trustees.
Comparing Funding Approaches
- Fully insured — insurer bears risk, state-regulated, predictable premium, subject to state mandates.
- Self-funded — employer bears risk, ERISA-governed, avoids state mandates/premium tax, uses stop-loss to limit exposure.
Exam trap: do not assume self-funded plans must follow every state benefit mandate — ERISA preemption is the reason large employers self-insure.
A self-funded employer carries specific stop-loss with a $75,000 attachment point. One employee incurs $210,000 in claims. How much does the specific stop-loss reimburse?
HSA Contribution Mechanics
Because HSAs are heavily tested, know the structure. An HSA must be paired with a qualifying HDHP (a plan meeting minimum deductible and maximum out-of-pocket thresholds set annually by the IRS). Contributions — by the employee, employer, or both — are tax-advantaged up to an annual limit, the account is owned by the employee and portable between jobs, and unused balances roll over indefinitely, unlike an FSA.
Worked Example — HSA vs. FSA Year-End
Two employees each set aside $3,000 for the year. The FSA participant spends only $2,400; under use-it-or-lose-it the remaining $600 is generally forfeited (absent a carryover or grace period). The HSA participant who spends $2,400 keeps the $600 in the account, where it rolls into next year and continues to grow tax-deferred. This contrast — forfeiture vs. rollover — is the single most common HSA/FSA exam distinction.
Putting the Funding Models Together
A producer advising an employer weighs three trade-offs: cost predictability, regulatory exposure, and cash-flow risk. A small employer usually prefers a fully insured community-rated plan for predictable premiums and turnkey compliance. A large, financially stable employer leans toward self-funding under ERISA to capture cash-flow advantages and dodge state mandates and premium tax, then buys specific and aggregate stop-loss to cap catastrophic exposure. A cafeteria plan layered on top delivers pre-tax savings to employees in either model, making Section 125 nearly universal in employer benefit design.