Non-discrimination Rules
Written by Justin Goodman, CIC, CISC, CLCS, CEO and Co-Founder, Total CSR
Published: October 2, 2026 · Last reviewed: October 2, 2026
In plain language: Non-discrimination rules stop employers from designing benefit plans that mostly help owners, executives, and top earners while giving far less to everyone else. The rules apply to health plans, cafeteria plans, and other benefits funded or sponsored by the employer.
Technical definition: Non-discrimination rules are federal requirements, primarily under Internal Revenue Code Sections 105(h) and 125, mandating that self-funded health plans and cafeteria plans pass eligibility and benefits tests comparing coverage for highly compensated employees, key employees, and other participants. Failing tests can trigger taxable income to favored employees or plan disqualification.
Non-discrimination Rules at a Glance
| Attribute | Detail |
|---|---|
| Also known as | Nondiscrimination testing, Section 125 nondiscrimination rules, cafeteria plan testing |
| Category | Employee benefits compliance requirement |
| Lines of business | Group health insurance, self-funded health plans, cafeteria plans |
| Industries most affected | Professional services, financial services, healthcare, closely held businesses |
| Related forms or endorsements | Not applicable; governed by IRC Sections 105(h) and 125, not a policy form |
| Who bears the risk | Employer sponsoring the plan; highly compensated employees who lose a tax exclusion |
| Common solution | Annual nondiscrimination testing performed by a third-party administrator or benefits consultant |
| Also interacts with | ERISA fiduciary duties, HIPAA, ACA employer mandate rules |
Key Takeaways
- Non-discrimination rules require employer-sponsored health and cafeteria plans to treat highly compensated and key employees fairly relative to other workers, not just more generously.
- Agencies selling group benefits need to flag these rules early because a failed test can mean lost tax advantages for the very owners and executives the plan was designed to help.
- The most common pitfall is assuming fully insured plans are exempt from all testing; cafeteria plans layered on top of a fully insured medical plan still face Section 125 testing.
- A strong best practice is referring clients to a third-party administrator or ERISA attorney for annual testing rather than letting the agency or employer self-certify compliance.
What Is Non-discrimination Rules in Insurance?
Non-discrimination rules are federal tax code provisions designed to prevent employers from structuring benefit plans so that only owners, executives, or highly paid staff receive the best coverage, lowest costs, or most favorable eligibility terms. Congress built these rules into the tax code because employer contributions toward health benefits and cafeteria plan elections receive favorable tax treatment. Lawmakers did not want that tax subsidy flowing disproportionately to the people who already earn the most.
The rules operate differently depending on plan type. Self-funded health plans fall under IRC Section 105(h), which tests both eligibility (who can join the plan) and benefits (what the plan actually pays). Cafeteria plans, which let employees choose between cash and tax-free benefits like health insurance or dependent care accounts, fall under IRC Section 125 and include separate tests for eligibility, contributions, and concentration of benefits among key employees.
Consider a 40-employee engineering firm that offers a self-funded health plan with a $500 deductible for the three owners and a $3,000 deductible for all other staff. That structure very likely fails the Section 105(h) benefits test. The IRS would treat the favorable portion of the owners' claims reimbursements as taxable income, erasing the tax benefit the plan was supposed to provide.
Fully insured plans historically carried lighter nondiscrimination exposure, but agencies should never assume a fully insured medical plan is automatically exempt from every applicable test, especially when a cafeteria plan sits on top of it.
How Does Non-discrimination Rules Work?
- The plan design. An employer builds a self-funded health plan, cafeteria plan, or both, setting eligibility criteria and benefit levels for different employee groups.
- The classification. The plan administrator identifies highly compensated employees and key employees under IRS definitions, which are based on compensation thresholds and ownership percentage.
- The testing. A third-party administrator runs eligibility, contributions, and benefits tests comparing what favored employees receive against what the broader workforce receives.
- The result. The plan either passes, confirming the tax-favored treatment stands, or fails, which triggers corrective action or taxable income to the favored group.
- The correction or consequence. Employers either amend the plan to equalize benefits going forward or report imputed taxable income to affected highly compensated employees for the plan year in question.
Real Claim Examples Involving Non-discrimination Rules
Self-funded plan with a hidden deductible gap
A 60-employee marketing agency self-funded its medical plan and quietly waived the deductible entirely for four named executives. During a routine Section 105(h) test conducted by the plan's third-party administrator, the gap surfaced immediately. The IRS treated the waived deductible amounts as taxable income to the four executives for that plan year, and the agency had to issue corrected W-2s and pay back payroll taxes.
Cafeteria plan concentration test failure
A professional services firm with 25 employees let only the five partners participate in a dependent care flexible spending account offered through its cafeteria plan. The concentration test under Section 125 flagged that key employees received more than 25 percent of total nontaxable benefits, which is the statutory ceiling. The firm had to open dependent care FSA eligibility to additional staff or convert the key employees' contributions to taxable income.
Early termination of coverage for rank-and-file staff
A manufacturing company allowed executives to retain full health coverage through year-end after resignation while cutting hourly workers' coverage the day they gave notice. A departing hourly employee filed a complaint, and a Department of Labor review found the disparate treatment violated both plan eligibility testing standards and ERISA's fiduciary duty of even-handed administration. The employer restructured termination provisions to apply uniformly across all employee classes.
Non-discrimination Rules vs. ERISA Fiduciary Duty: What Is the Difference?
Non-discrimination rules and ERISA fiduciary duty both govern how employers must treat employees under a benefit plan, but they come from different legal sources and police different behavior. Non-discrimination rules are IRS tax code tests measuring whether favored employees receive disproportionate tax-free benefits, while ERISA fiduciary duty is a Department of Labor standard requiring plan administrators to act prudently and solely in participants' interest regardless of tax outcomes.
| Comparison area | Non-discrimination Rules | ERISA Fiduciary Duty |
|---|---|---|
| Primary use case | Testing whether highly paid employees get disproportionate tax-free benefits | Requiring prudent, loyal administration of plan assets and decisions |
| Coverage / concept type | IRS tax code compliance test (IRC 105(h), 125) | Federal fiduciary standard under ERISA Title I |
| Typical exclusions | Fully insured plans have reduced testing exposure in some cases | Church plans and certain government plans are exempt from ERISA entirely |
| Who is most affected by errors | Highly compensated employees who lose tax-free treatment | Plan sponsors and administrators facing personal liability |
| Common mistakes | Assuming insured plans need no testing at all | Assuming fiduciary duty only applies to retirement plans, not health plans |
What Are the Most Common Mistakes With Non-discrimination Rules?
- Agencies assume fully insured medical plans carry no nondiscrimination exposure, overlooking that an attached cafeteria plan still requires Section 125 testing.
- Employers design executive carve-out plans without running any test first, discovering the failure only after a costly year-end payroll correction.
- CSRs fail to ask whether a client's health plan is self-funded or fully insured, which changes which nondiscrimination section applies entirely.
- Producers recommend benefit structures favoring owners without looping in an ERISA attorney or third-party administrator, creating E&O exposure if the plan later fails testing.
- Agencies treat nondiscrimination testing as a one-time setup task rather than an annual requirement tied to each plan year's employee census.
- Staff confuse nondiscrimination rules with HIPAA nondiscrimination provisions, which address health-status discrimination rather than compensation-based benefit disparities.
How to Explain Non-discrimination Rules to a Client
Explaining Non-discrimination Rules to a personal lines client
This term generally will not come up for personal lines clients since it applies to employer group benefit plans, not individual auto or home policies. If a personal lines client asks because they heard the phrase at work, you can simply say it is a tax rule making sure a company's health plan treats regular employees fairly compared to the owners and executives.
Explaining Non-discrimination Rules to a small business owner
Tell the business owner that if they want to offer themselves or their leadership team better health benefits than everyone else, the IRS has rules limiting how far that gap can go. Explain that a third-party administrator can run a test each year to confirm the plan qualifies for its tax advantages. Make clear that skipping this test does not make the risk disappear, it just means nobody finds out until the IRS or an audit does.
Explaining Non-discrimination Rules to a CFO or risk manager
Walk the CFO through the distinction between Section 105(h) testing for self-funded plans and Section 125 testing for cafeteria plans, since the compliance calendar differs for each. Note that a failed test creates imputed taxable income for highly compensated employees, which means payroll corrections and potential employee relations issues on top of the tax exposure. Recommend they confirm with their benefits counsel or TPA exactly which tests apply given their plan's funding structure and employee census.
Frequently Asked Questions About Non-discrimination Rules
Do non-discrimination rules apply to small businesses?
Yes, non-discrimination rules apply regardless of company size, though smaller employers with few highly compensated employees sometimes have an easier time passing tests simply because the employee pool is smaller and more uniform. A five-person firm where the owner and all employees receive identical coverage will generally pass without issue. Problems arise when a small employer carves out special benefits for one or two top earners.
What happens if a plan fails nondiscrimination testing?
A failed test typically converts the favorable benefit amount into taxable income for the highly compensated or key employees who received it, reported on their W-2 for that plan year. The employer may also need to amend the plan design going forward to close the gap. In cafeteria plan failures, the employer sometimes must disqualify the plan's pre-tax status entirely for the affected group.
Are fully insured health plans exempt from non-discrimination rules?
Fully insured medical plans themselves have historically faced less rigorous nondiscrimination enforcement than self-funded plans under Section 105(h), but that does not mean full exemption from all testing. A cafeteria plan sitting on top of a fully insured medical plan still triggers Section 125 testing. Agencies should never assume "fully insured" means "no testing required."
Who counts as a highly compensated employee for these purposes?
The IRS defines highly compensated employees using compensation thresholds that adjust periodically, along with ownership percentage tests for business owners and their family members. Key employees are a narrower subset, generally officers above a certain compensation level or employees owning more than a stated percentage of the business. Agencies should direct clients to their plan's TPA or benefits counsel for the current year's exact dollar thresholds rather than relying on memory.
Can an agency perform nondiscrimination testing for a client?
Agencies generally should not perform the testing themselves, since it requires detailed census data analysis and interpretation of IRS regulations best handled by a third-party administrator, enrolled actuary, or ERISA attorney. The agency's role is recognizing when a plan design raises a red flag and routing the client to qualified testing resources. Attempting the calculation in-house without that expertise creates meaningful E&O exposure if the result is wrong.
Does this rule only apply to health insurance plans?
Non-discrimination testing reaches beyond major medical coverage into cafeteria plans, dependent care assistance programs, group term life insurance above certain thresholds, and other employer-sponsored benefits with favorable tax treatment. Each benefit type has its own testing section within the tax code. A client offering multiple pre-tax benefits may need separate tests run for each one.
Related Insurance Terms
- ERISA: The federal law governing most employer-sponsored benefit plans, setting fiduciary, reporting, and disclosure standards that work alongside non-discrimination rules but address different compliance concerns.
- Cafeteria Plan: A Section 125 benefit arrangement letting employees choose between taxable cash and tax-free benefits, directly subject to the nondiscrimination eligibility, contribution, and concentration tests described above.
- Highly Compensated Employee: An IRS-defined category based on compensation and ownership thresholds, used to identify which workers' benefits must be compared against the broader workforce during testing.
- Self-Funded Health Plan: An employer-funded medical plan subject to Section 105(h) nondiscrimination testing, as opposed to fully insured plans which carry different testing exposure.
- Key Employee: A narrower IRS category than highly compensated employee, based on officer status and ownership percentage, used specifically in the Section 125 concentration test.
- Section 125 Plan: Another name for a cafeteria plan, the specific tax code section creating the pre-tax benefit structure that triggers nondiscrimination testing requirements.
Sources and References
- Internal Revenue Service. Section 125 Cafeteria Plans Compliance Guide.
- U.S. Department of Labor. ERISA Fiduciary Responsibilities.
About the Author
Justin Goodman, CIC, CCIP, CISC, CLCS, CRIS, PCIA, QCLS, MFHR CEO and Co-Founder, Total CSR, Inc.
Justin Goodman is a third-generation insurance broker with over two decades in agency operations. He has trained more than 100,000 CSRs, account managers, and producers in commercial and personal lines coverage, from workers' compensation to construction risk. He was named 2024 Insurance Journal Agent of the Year and one of the nation's top five construction insurance experts by Risk & Insurance. He is the author of Retain, which applies cognitive science research on memory and knowledge transfer to insurance training, and speaks nationally on how agencies build durable technical expertise in their teams.