11.1 Qualified vs. Nonqualified Plans and ERISA Basics

Key Takeaways

  • Qualified plans satisfy Internal Revenue Code (IRC) Section 401(a), giving the employer a current deduction while employees enjoy tax-deferred growth.
  • Nonqualified plans skip Internal Revenue Service (IRS) approval, can favor select executives, but defer the employer deduction until the employee is taxed.
  • The Employee Retirement Income Security Act (ERISA) sets minimum rules for eligibility, vesting, funding, fiduciary conduct, reporting, and disclosure.
  • Standard eligibility is age 21 plus one year of service (1,000 hours); vesting uses a 3-year cliff or 6-year graded schedule.
  • Employee salary deferrals are always 100% immediately vested; only employer money is subject to a vesting schedule.
Last updated: June 2026

Why "Qualified" Matters

A qualified plan is a retirement arrangement that meets the requirements of Internal Revenue Code (IRC) Section 401(a) and is approved by the Internal Revenue Service (IRS). In exchange for following strict rules, the plan earns three tax advantages that a producer must be able to recite on demand.

The core trade is simple: the government grants tax favors, and in return the plan must cover rank-and-file workers fairly, not just owners and executives. This fairness mandate is enforced through nondiscrimination testing and the funding and fiduciary rules described below.

Tax FeatureWho BenefitsHow It Works
Current deductionEmployerContributions are deductible the year they are made
Pre-tax deferralEmployeeSalary deferrals reduce current taxable income
Tax-deferred growthEmployeeEarnings compound untaxed until distribution
Deferred taxationEmployeeOrdinary income tax applies only at withdrawal

Qualified vs. Nonqualified at a Glance

A nonqualified plan does not meet IRC 401(a) and is not filed for IRS approval. Because it escapes the nondiscrimination rules, the employer may legally discriminate in favor of chosen executives, offering benefits to a hand-picked group.

The price for that freedom is timing. The employer cannot deduct a nonqualified contribution until the employee actually includes it in income. Common examples are deferred compensation plans and supplemental executive retirement plans (SERPs).

FeatureQualified PlanNonqualified Plan
IRS approval / 401(a)RequiredNot required
May favor executivesNo (must be nondiscriminatory)Yes
Employer deduction timingWhen contributedWhen employee is taxed
Contribution limitsIRS dollar limits applyNo statutory limit
Creditor protectionStrong (ERISA)Weak (often employer's general assets)

Exam trap: The single biggest distinction tested is the employer deduction timing. Qualified = deduct now; nonqualified = deduct later when the employee pays tax.

Test Your Knowledge

An employer wants to provide an extra retirement benefit to only its three top executives and does not mind waiting to take the tax deduction. Which arrangement fits?

A
B
C
D

ERISA: The Rulebook for Qualified Plans

The Employee Retirement Income Security Act of 1974 (ERISA) is federal law that protects participants in employer plans. The exam expects you to know the six areas ERISA regulates and the basic standards in each.

ERISA AreaWhat It Controls
Eligibility / participationWhen a worker may join the plan
VestingWhen employer money becomes the employee's to keep
FundingMinimum amounts the employer must set aside
Fiduciary conductDuty of loyalty and prudence for those handling assets
ReportingAnnual Form 5500 filed with the government
DisclosureSummary Plan Description (SPD) given to participants

ERISA generally covers private-sector plans. Government and most church plans are exempt, which is why a city pension can follow different rules than a corporate 401(k).

Eligibility and Vesting Mechanics

Eligibility standards set a floor, not a ceiling. A plan may be more generous than the minimum but never more restrictive. The default rule lets a worker in once they reach age 21 and complete one year of service (1,000 hours in 12 months).

Vesting is the schedule under which employer contributions become non-forfeitable. Two ERISA schedules apply to most defined contribution employer money:

ScheduleHow It Vests
3-year cliff0% for years 1-2, then a jump to 100% at year 3
6-year graded20% at year 2, rising 20% per year to 100% at year 6

Worked example: A worker leaves after 4 years under the 6-year graded schedule. She keeps 60% of employer contributions and forfeits 40%. Her own salary deferrals, however, are always 100% vested and leave with her.

Nondiscrimination and Top-Heavy Tests

To keep its tax status, a qualified plan cannot tilt benefits toward a Highly Compensated Employee (HCE) — broadly, a more-than-5% owner or someone earning above an indexed threshold. Coverage and the Actual Deferral Percentage (ADP) tests limit how much more HCEs may defer relative to other workers.

A plan is top-heavy when more than 60% of plan assets belong to key employees (certain officers and owners). A top-heavy plan must give non-key workers a minimum contribution (generally 3% of pay) and use a faster vesting schedule.

  • HCE / key-employee status is tested annually using IRS-indexed dollar figures.
  • A safe harbor design (guaranteed employer match or contribution) lets a 401(k) bypass the ADP test entirely.
  • Fiduciaries owe a duty of loyalty (act solely for participants) and prudence (act with care and skill), and must avoid prohibited self-dealing.
Test Your Knowledge

Under a 6-year graded vesting schedule, an employee who terminates after exactly 3 years of service is entitled to what portion of the employer's matching contributions?

A
B
C
D

Qualified vs. Nonqualified Tax Treatment

A qualified plan meets IRS requirements for favorable tax treatment: contributions are pre-tax/deductible, growth is tax-deferred, and the entire distribution is taxable because nothing was taxed going in. A nonqualified plan uses after-tax contributions, so only the earnings are taxed at distribution (cost basis returns tax-free). Qualified plans must be nondiscriminatory, have contribution limits, and require minimum distributions; nonqualified plans can favor select executives and have no IRS contribution cap.

ERISA Fiduciary and Coverage Rules

ERISA (Employee Retirement Income Security Act) governs private employer plans to protect participants. It imposes fiduciary duties (act solely in participants' interest, prudent-expert standard, diversify investments), reporting and disclosure (summary plan description, Form 5500), vesting schedules, and nondiscrimination so plans cannot favor only highly compensated employees. ERISA does not cover government or church plans. A plan that violates nondiscrimination risks losing its qualified status.

Test Your Knowledge

The key tax difference between a qualified and a nonqualified retirement plan is that in a qualified plan:

A
B
C
D