What a Section 125 Plan Is
ServicePro Insurance Solutions is a licensed independent group health insurance brokerage serving Irvine employers, including the payroll structures sitting under their benefit plans.
A Section 125 (cafeteria) plan is a common payroll structure that generally allows employees to pay their share of qualified benefit premiums — including health insurance — with pre-tax dollars, which can lower both employee taxable income and employer payroll tax costs.
The IRS calls it “a separate written plan maintained by an employer for employees,” in which participants “must be permitted to choose among at least one taxable benefit (such as cash) and one qualified benefit,” per the IRS cafeteria plan FAQ. The document must describe every benefit and set the rules for eligibility and elections.
The Premium Only Plan Is Where Most Employers Start
A POP is the narrowest useful version of Section 125: employees choose between taxable cash wages and paying their share of group medical, dental, and vision premiums with pre-tax dollars.
The KFF 2025 Employer Health Benefits Survey puts the average annual family premium at $26,993, with workers contributing $6,850 out of their paychecks. That employee share is what a POP moves out of taxable wages.
* Figures cited are third-party survey data for general market context and are not a quote or guarantee for any specific company.
A cafeteria plan for small business owners usually stops there. If the medical plan itself is unsettled, see our group health insurance page for Irvine employers or our breakdown of group health insurance for California companies with 20 to 50 employees.
Which Benefits Qualify and Which Are Excluded
Getting the benefit list wrong is how pre-tax deductions turn into taxable wages.
- Accident and health benefits — but not Archer MSAs or long-term care insurance
- Adoption assistance
- Dependent care assistance
- Group-term life insurance
- Health savings accounts
- A qualified 401(k) plan
The excluded list is longer: Archer MSAs, long-term care insurance, athletic facilities, de minimis benefits, educational assistance, employee discounts, employer-provided cell phones, lodging on business premises, meals, no-additional-cost services, retirement planning services, transportation and commuting benefits, tuition reduction, working condition benefits, and scholarships. Full list: IRS Publication 15-B.
Elections Are Locked Before the Plan Year Starts
Employees elect before the plan year begins, and once the year is underway those elections are generally irrevocable. Someone who waived coverage in November cannot reverse that in March.
The exception is a permitted change-in-status event — marriage, divorce, birth, adoption, a spouse’s job change. The document must name which events count and how fast employees must act. If your benefits administration and payroll technology is not capturing those events with dates, you cannot support the change later.
Nondiscrimination Testing Is Not Optional
Publication 15-B is blunt: “If your plan favors highly compensated employees as to eligibility to participate, contributions, or benefits, you must include in their wages the value of taxable benefits they could have selected.”
A second test aims at owners and officers: the plan favors key employees if they receive more than 25% of the total of the nontaxable benefits under it. In a 12-person company with three founders on family coverage, run that math before renewal.
* Figures cited are third-party survey data for general market context and are not a quote or guarantee for any specific company.
What a Premium Only Plan Costs and How Long Setup Takes
Two things drive price: who drafts the document, and who runs the annual testing. Payroll platforms, third-party administrators, and benefits counsel all sell a version of this, and the pricing is not comparable. Ask for the drafting fee, testing fee, and restatement schedule as separate line items.
Timing is less flexible. The document must be adopted before the plan takes effect, so it cannot paper over deductions you already ran. Work backward from your renewal date and your payroll provider’s cutoff for deduction-code changes. Our benefits implementation process lays out that sequence. For a second read on the benefits spend, Request a Free Benefits Consultation.
Payroll, Broker, and CPA Have to Agree
These plans fail when three parties each assume someone else handled it:
- Payroll provider — configures pre-tax deduction codes and confirms wage treatment on Form W-2
- Broker — confirms which premiums are qualified benefits and keeps the document matched to the carriers
- CPA or benefits counsel — reviews nondiscrimination testing and the payroll tax positions taken
Census ZIP Code Business Patterns counts 14,624 establishments across Irvine ZIP codes, and 84% have fewer than 20 employees. Very small employers are the ones most likely to be running pre-tax health insurance premiums through payroll with no written plan document on file. That gap is cheap to fix now, expensive to explain later.
* Figures cited are third-party survey data for general market context and are not a quote or guarantee for any specific company.
On the cost side, read our guide to lowering group health insurance costs in California; first-time buyers should start with group health insurance for California startups and new businesses.
Frequently Asked Questions
Does a Section 125 plan cost extra to set up?
Usually yes. There is typically a one-time fee to draft the written plan document, plus separate charges for annual nondiscrimination testing and restatements. Ask for all three in writing rather than one bundled number.
Can employees change their election mid-year?
Generally no. Elections are made before the plan year begins and stay irrevocable for the rest of the year, unless the employee has a permitted change-in-status event the plan document allows. Read the document before promising anyone anything.
Can a 401(k) be part of a Section 125 plan?
Yes, and a lot of published guidance gets this backwards. IRS Publication 15-B states: “Generally, a cafeteria plan doesn’t include any plan that offers a benefit that defers pay. However, a cafeteria plan can include a qualified 401(k) plan as a benefit.” The exception is narrow: it covers a qualified 401(k) cash-or-deferred arrangement, not deferred compensation generally. The confusion usually traces to retirement planning services, which do sit on the IRS list of benefits that cannot be offered under Section 125 — a different thing entirely.
How fast can we get a Premium Only Plan in place before open enrollment?
The gating items are the plan document, which must be adopted before it takes effect, and your payroll provider’s cutoff for deduction-code changes. Start six to eight weeks ahead of renewal so the document, payroll setup, and election forms land in order. Call us with your renewal date and we will map it backward.
Ready to Get Started?
If payroll is taking pre-tax deductions but nobody can find the plan document, that is fixable.
Request a Free Benefits Consultation or call us at (760) 965-7675.
* This is general information about Section 125 plans, not tax or legal advice. Consult a CPA or benefits counsel before establishing or modifying a cafeteria plan.