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Takeaway
A Section 125 cafeteria plan lets employees choose between taxable compensation, such as cash wages, and certain qualified, nontaxable benefits. When employers design and administer these plans correctly, employees pay for eligible benefits with pretax dollars, and employers reduce payroll tax liability. This guide explains how Section 125 plans work, which benefits qualify, who can participate and how employers set up and manage these plans in compliance with IRS rules.
What is a Section 125 cafeteria plan?
Section 125 of the Internal Revenue Code (IRC) defines a cafeteria plan as a written, employer-sponsored plan that allows employees to choose between at least one taxable benefit (such as cash compensation) and one or more qualified benefits that the IRS excludes from gross income. Employers must meet the Code’s specific requirements to preserve this tax-favored treatment.
Employees earn the right to make these elections only through a valid Section 125 plan. If an employer offers employees a choice between taxable and nontaxable benefits without such a plan, the IRS generally treats the benefits as taxable under constructive receipt rules.
How a Section 125 plan works
A Section 125 plan requires employees to make benefit elections before the plan year begins or during an IRS-permitted enrollment period. Employees generally cannot change these elections during the year unless they experience a qualifying life event recognized by the IRS.
After employees make elections:
- Payroll deducts the employee’s share of benefit costs on a pretax basis.
- Pretax deductions reduce wages subject to federal income tax, Social Security tax and Medicare tax.
- Employers calculate payroll taxes on a lower taxable wage base and reduce their employer FICA obligations.
Employers must administer the plan according to its written terms and apply nondiscrimination rules under IRC Section 125 to maintain pretax treatment.
Section 125 plan benefits for employers
Employers gain several concrete advantages when they implement and manage a compliant Section 125 plan.
- Lower payroll tax costs: Pretax salary reductions decrease wages subject to employer FICA taxes.
- Greater compensation efficiency: Employers increase the value of benefits without increasing gross wages.
- Clear compliance framework: A written plan document establishes rules that align benefits administration with IRS requirements.
How Section 125 deductions affect payroll taxes
Section 125 salary reduction contributions exclude eligible benefit costs from an employee’s gross income for federal income tax purposes. In most cases, the IRS also excludes these amounts from wages subject to Social Security and Medicare taxes. As a result, employers pay payroll taxes on a smaller wage base.
For example, when an employee elects $5,000 in pretax benefits through a Section 125 plan, payroll excludes that amount from taxable wages, assuming the employer follows all plan and IRS requirements.
What are the different types of Section 125 plans?
Employers can structure Section 125 plans in several common ways, depending on the benefits they offer.
- premium only plans (POP): allow employees to pay their share of eligible insurance premiums with pretax dollars
- Flexible Spending Arrangements (FSAs): let employees set aside pretax funds for qualified medical or dependent care expenses, subject to IRS limits
- simple cafeteria plans: provide a streamlined option for eligible small employers and help satisfy nondiscrimination requirements
- full cafeteria plans: combine multiple qualified benefits into a broader pretax benefits program
What benefits are included in a Section 125 plan?
The IRS limits Section 125 plans to qualified benefits defined in the IRC and related guidance. Employers commonly include:
- medical, dental and vision insurance premiums
- Health Flexible Spending Arrangements (Health FSAs)
- Dependent Care Assistance Plans (DCAPs)
- Health Savings Account (HSA) contributions, when permitted by plan design
- group-term life insurance coverage within IRS limits
The IRS prohibits employers from offering certain benefits — such as retirement plan contributions, long-term care insurance and most educational assistance — as pretax elections under a Section 125 plan, even if other tax provisions treat those benefits favorably.
Who is eligible for a Section 125 plan?
IRS rules restrict participation in a Section 125 plan to employees only. The IRS excludes the following individuals from participation:
- self-employed individuals
- partners in a partnership
- more-than-2% shareholders of an S corporation
Employers must also apply IRS nondiscrimination testing to confirm that the plan does not favor highly compensated or key employees. When a plan fails these tests, affected individuals lose the tax-favored treatment of their benefits.
How to set up a Section 125 plan
Employers establish a Section 125 cafeteria plan by completing several required steps.
- Adopt a written plan document that defines eligible benefits, elections and plan rules.
- Set employee eligibility requirements and enrollment periods.
- Configure payroll systems to process pretax deductions accurately.
- Administer the plan according to its terms and perform required nondiscrimination testing.
If an employer offers pretax benefits without first adopting a valid written plan, the IRS may treat all benefits as taxable compensation.
Managing Section 125 plans with benefits administration software
Once a Section 125 cafeteria plan is established, employers must consistently administer elections, deductions and compliance requirements throughout the plan year. For midmarket and enterprise organizations, managing these processes manually can increase the risk of payroll errors, compliance gaps and rework.
Benefits administration software can help centralize key aspects of Section 125 plan management, including employee elections, pretax payroll deductions and documentation tracking. By connecting benefits data with payroll processes, HR teams can reduce administrative burden and improve accuracy as employee elections change due to qualifying life events or enrollment periods.
For organizations managing larger or more complex workforces, technology support can also help maintain consistent plan administration across locations, employee groups and payroll cycles — supporting ongoing compliance with IRS rules while simplifying day-to-day operations.
Explore Paycom’s benefits administration software
Learn how Paycom helps HR and payroll teams manage employee benefit elections, pretax payroll deductions and documentation in a single software.
Section 125 plan FAQs
What are common Section 125 mistakes?
Employers most often create compliance issues when they fail to maintain a written plan document, allow midyear election changes without a qualifying event or skip required nondiscrimination testing. These mistakes can cause the IRS to reclassify benefits as taxable.
What is “Cafe 125” on a W-2?
When a Form W-2 shows “Cafe 125,” it typically reflects pretax benefit amounts that an employee elected through a Section 125 cafeteria plan and excluded from taxable wages.
What is the purpose of a Section 125 plan?
A Section 125 plan allows employees to pay for certain benefits with pretax dollars and allows employers to reduce payroll tax exposure, as long as the employer follows IRS rules and maintains proper documentation.
