Section 125 Cafeteria Plan Explained: How It Works & Who Qualifies
A Section 125 cafeteria plan allows employees to pay for eligible benefits with pre-tax dollars. This lowers taxable wages and reduces FICA payroll taxes for both employers and employees — often funding healthcare benefits at zero net cost.
What Is a Section 125 Plan?
A Section 125 plan is a written employer-sponsored benefit program that allows employees to redirect a portion of their salary toward qualified benefits before federal payroll taxes are calculated. The plan takes its name from Section 125 of the Internal Revenue Code, which has authorized cafeteria plans since 1978.
How FICA Tax Savings Fund Benefits
When an employee elects benefits under a Section 125 plan, eligible payroll is reclassified as pre-tax. This reduces the taxable wage base, which in turn reduces FICA (Social Security and Medicare) taxes owed by both the employee and the employer.
Employee FICA Savings Explained
Employees save 7.65% on every dollar redirected pre-tax. On a $250 monthly benefit election, an employee saves approximately $19.13 per month in FICA taxes alone, in addition to federal and state income tax reductions.
Employer FICA Savings Explained
Employers also save 7.65% on reduced taxable payroll. For an employee earning $2,600 per month with a $250 pre-tax election, the employer's FICA liability drops from $198.90 to $107.09 — a monthly savings of $91.81 per employee.
Who Is Eligible for a Section 125 Plan?
Section 125 plans are available to most W-2 employees, including full-time and part-time workers across all industries.
Eligible Employees
All W-2 employees are eligible regardless of hours worked. This includes restaurant workers, retail staff, healthcare workers, construction employees, and workers in any sector.
Ineligible Participants
Self-employed individuals, 1099 contractors, sole proprietors, partners in a partnership, and more-than-2% S-corporation shareholders generally cannot participate in a Section 125 plan.
Types of Section 125 Cafeteria Plans
Section 125 plans come in several forms. The right structure depends on the benefits the employer wants to offer and the level of administration they are prepared to manage.
Premium-Only Plan (POP)
A Premium-Only Plan is the simplest Section 125 structure. It allows employees to pay their share of employer-sponsored health, dental, and vision premiums with pre-tax dollars. No benefit fund or account is required.
Flexible Spending Account (FSA)
A health FSA allows employees to set aside pre-tax dollars for out-of-pocket medical expenses. Dependent care FSAs cover eligible childcare costs. Both reduce taxable income and FICA exposure.
Full Cafeteria Plan
A full cafeteria plan combines a POP, FSA, and other eligible benefits into one umbrella program. Employees choose from a menu of benefits using pre-tax salary dollars, maximizing savings across multiple benefit types.
Benefits Covered Under Section 125
- Health insurance premiums (medical, dental, vision)
- Group term life insurance up to $50,000
- Health and dependent care flexible spending accounts
- Accident and disability insurance premiums
- Adoption assistance (limited)
Why Employers Use Section 125 Plans
Employers use Section 125 plans to make benefits more affordable, improve participation, support employee retention, and reduce their own payroll tax burden — all without increasing base compensation.
How to Set Up a Section 125 Plan
Setting up a compliant Section 125 plan requires formal documentation, enrollment procedures, and payroll integration. Most implementations are completed within 10 to 14 business days.
Step 1: Prepare a Written Plan Document
IRS rules require a written plan document that describes eligible benefits, the plan year, eligibility rules, and election procedures. This document is the foundation of IRS compliance.
Step 2: Define Eligible Benefits and Elections
Identify which benefits will be offered under the plan and set contribution limits. Employees must make binding elections before the plan year begins.
Step 3: Conduct Open Enrollment
Communicate the plan to employees and collect elections. Employees generally cannot change elections mid-year unless they experience a qualifying life event.
Step 4: Integrate with Payroll
Update payroll to reflect pre-tax deductions. The payroll system must correctly code benefit deductions as Section 125 pre-tax amounts and reflect reduced W-2 box 1 wages.
Section 125 Compliance Requirements
Section 125 plans must meet specific IRS requirements to remain valid. Non-compliant plans can result in taxable benefits and penalties for both employers and employees.
Nondiscrimination Testing
Section 125 plans must pass eligibility, contributions and benefits, and key employee concentration tests annually. Plans that fail nondiscrimination testing must correct the imbalance or highly compensated employees lose their pre-tax benefit status.
Written Plan Document Requirement
A written plan document is not optional — it is a legal requirement under Section 125. The document must be adopted before the plan year begins and kept on file for IRS audit purposes.
Annual Election Period
Employees must make benefit elections before the plan year. Mid-year election changes are only allowed for qualifying events such as marriage, divorce, birth, adoption, or loss of other coverage.
Section 125 and Small Businesses
Section 125 plans are especially valuable for small businesses. Employer FICA savings of $91.81 per employee per month can fund supplemental healthcare benefits with no out-of-pocket employer cost. Businesses with as few as 3 employees can implement a compliant plan.
Common Section 125 Mistakes to Avoid
- Operating without a written plan document
- Allowing mid-year election changes without a qualifying event
- Failing to complete annual nondiscrimination testing
- Including ineligible benefits (such as COBRA premiums for retirees)
- Miscoding payroll deductions on W-2 forms
Section 125 Frequently Asked Questions
Can part-time employees participate in Section 125?
Yes. Section 125 plans cover all W-2 employees regardless of hours worked. Part-time employees receive the same pre-tax benefit elections as full-time staff.
Does Section 125 replace health insurance?
No. Section 125 is a tax structure that sits alongside a health plan. It determines how premiums and benefit contributions are treated for tax purposes, not what the plan covers.
How much does a Section 125 plan cost to set up?
Many providers, including Summit Health Benefits, offer Section 125 plan implementation at zero employer cost. The FICA tax savings generated by the plan typically exceed administrative fees by a significant margin.
Is a Section 125 plan required by law?
Section 125 plans are not required, but they are one of the most effective legal mechanisms for reducing payroll taxes while improving employee benefits — making them a standard tool for employers of all sizes.