A qualified nonelective contribution (QNEC) can correct a failed 401(k) ADP or ACP test, but it is not automatically required or the best answer. The right correction depends on the plan document, the failed test calculation, eligible participants, contribution limits, testing method and correction deadlines. In some cases, a corrective distribution or an available IRS correction-program route is more appropriate.
Before allocating money, the plan sponsor or administrator should verify the test inputs, identify the permissible correction methods and document the decision. A retirement-plan professional can apply the rules to the plan year and participant data.
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What ADP and ACP tests measure
401(k) nondiscrimination testing is designed to prevent a plan from giving highly compensated employees (HCEs) a disproportionately large contribution opportunity compared with nonhighly compensated employees (NHCEs). Traditional 401(k) plans generally perform these tests each year unless a design exception applies.
ADP test
The actual deferral percentage (ADP) test compares elective deferrals—salary-reduction contributions elected by employees—for HCEs and NHCEs. A failure means the HCE deferral rate is too high under the applicable comparison permitted by the Internal Revenue Code and the plan’s testing method.
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ACP test
The actual contribution percentage (ACP) test generally covers employer matching contributions and employee contributions that are not elective deferrals, such as certain after-tax contributions. A plan can pass ADP and fail ACP, fail both, or fail neither; each failure must be analyzed separately because the contribution categories and correction amounts differ.
Do not assume that a QNEC calculated for an ADP failure automatically fixes an ACP failure. The correction must address the contribution category that failed and satisfy the plan terms and applicable limits.
Is a QNEC required after a failed test?
No. A QNEC is one possible correction method. The IRS describes corrective QNECs for eligible NHCEs, generally allocated at the same percentage of compensation, only to the extent needed to raise the test percentage enough for the plan to pass and subject to applicable contribution limits. Whether that method is available, affordable or preferable depends on the plan document and the facts.
Other possibilities include distributing excess contributions and allocable earnings to affected HCEs or using an applicable correction method under the IRS Employee Plans Compliance Resolution System (EPCRS). A sponsor should not promise a QNEC, distribution or other remedy until the test has been rerun and the plan’s correction provisions reviewed.
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Validate the failure before choosing a correction
An incorrect data file can create a false failure or an incorrect correction amount. The IRS directs sponsors to review the following items before implementing a remedy:
- HCE and NHCE classifications: Confirm ownership, family-member attribution and other rules that determine who is highly compensated.
- Eligible employees: Check that every employee who met the plan’s eligibility conditions was included, including employees who terminated during the year when required.
- Compensation: Verify the compensation definition in the plan document, the measurement period and any exclusions used in the test.
- Contribution coding: Separate elective deferrals, matching contributions and employee contributions so ADP and ACP amounts are placed in the correct test.
- Testing method: Determine whether the plan uses current-year or prior-year NHCE data and whether a special design rule changes the calculation.
- Plan terms and limits: Check the allocation formula, vesting language, distribution restrictions and annual contribution limits before calculating a QNEC.
Correcting the data may eliminate the apparent failure. If the inputs change, rerun the ADP and ACP calculations before allocating or distributing anything.
How a corrective QNEC works
Employer-funded and not elective
A QNEC is an employer contribution that employees do not elect through salary reduction. It is credited to participant accounts under the plan’s terms rather than taken from an employee’s paycheck. The IRS Fix-it Guide states: “A qualified nonelective employer contribution (QNEC) is an employer contribution that is always 100% vested and subject to the same distribution restrictions as elective deferrals.”
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Allocation to eligible NHCEs
For the correction approach described by the IRS, the sponsor makes contributions for eligible NHCEs, generally using the same percentage of compensation for those participants. The percentage is limited to what is needed to bring the failed test to a passing result; a sponsor should not use a larger percentage simply because the plan can afford it. Compensation, participant eligibility and the plan’s allocation provisions determine the actual dollars.
Vesting and distribution treatment
Corrective QNECs are fully vested when allocated and are subject to most of the same distribution restrictions as elective deferrals. They are not an immediately withdrawable bonus. The restrictions can affect when participants may receive the money, even though the employer funded it.
Contribution limits
A QNEC must remain within applicable annual additions and other statutory limits. The test correction does not authorize an allocation that exceeds those limits. The administrator should model the QNEC alongside elective deferrals, matching contributions and other employer contributions for each affected participant.
Correction deadlines and the 10% excise-tax issue
Timing has several separate parts, and they should not be conflated.
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|---|---|---|
| 2½ months after the end of the plan year | The IRS identifies this point as relevant to correcting excess contributions for the stated excise-tax consequence. | The exact calendar date depends on the plan year; a calendar-year example cannot be copied to a different year-end. |
| 12-month correction period | Corrective action may generally be made during the statutory 12-month period described by the IRS. | Follow the plan document and verify the rule for the specific test and plan year. |
| Within 12 months when current-year testing is used | The IRS says the 10% excise tax does not apply when qualifying corrective QNECs are made within 12 months in the stated current-year-testing circumstances. | Insufficient or late contributions can leave excess amounts subject to the tax. |
| After the 12-month period | The IRS describes a three-year self-correction period for significant operational failures involving ADP or ACP testing. | This is an EPCRS timing rule, not an extension of every statutory correction deadline; program eligibility and documentation requirements apply. |
The 12-month window and the 2½-month excise-tax timing are different concepts. A sponsor should establish the plan-year end, the date the failure was identified, the testing method and the date each corrective action will occur. Current IRS guidance should be checked for the rules in effect when the correction is implemented.
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QNEC versus other correction routes
When more than one remedy is permitted, compare the effect on the employer, participants and plan administration rather than choosing solely on cost.
| Correction route | Who receives or returns money | Tax and account treatment | When it may fit |
|---|---|---|---|
| Corrective QNEC allocation | Eligible NHCEs receive an employer contribution. | Generally 100% vested and subject to elective-deferral distribution restrictions; contribution limits apply. | Useful when the plan permits the allocation and the sponsor wants to increase NHCE test percentages without taking HCE money out of the plan. |
| Corrective distribution | Affected HCEs receive excess contributions and allocable earnings. | The IRS says returned excess contributions and allocable earnings are taxable to the recipient in the distribution year and reported on Form 1099-R. | May be appropriate when distributing the excess is permitted and can be completed within the applicable correction period. |
| Other EPCRS correction | Participants affected by the operational failure are addressed under the selected EPCRS method. | Requirements, notices, records and eligibility depend on the specific correction program. | Consider when the failure or timing falls within the Self-Correction Program (SCP) or another available EPCRS route. |
Participant notices and tax reporting are part of the correction, not optional administrative extras. Affected participants should receive the applicable explanation of the distribution or allocation, and the plan administrator must use the required reporting process.
Step-by-step process for a failed ADP or ACP test
- Secure the test report and plan document. Identify the plan year, testing method, contribution category that failed and the exact excess or shortfall.
- Reconcile participant data. Review HCE status, ownership attribution, eligibility, compensation, contribution source and termination records. Correct omissions or misclassifications and rerun the test.
- Separate ADP and ACP remedies. Determine whether the failure concerns elective deferrals, matching or employee contributions, or more than one category.
- Check available correction methods. Read the plan’s correction provisions and compare a QNEC allocation, corrective distribution and any EPCRS option available for the facts.
- Calculate within limits. For a QNEC, identify eligible NHCEs, apply the required allocation percentage and confirm that each participant remains within applicable limits. For a distribution, calculate excess contributions and allocable earnings under the required method.
- Set the deadline calendar. Record the plan-year end, the 2½-month excise-tax timing point, the 12-month correction period and any EPCRS deadlines. Obtain professional confirmation where the plan uses prior-year testing or another special design.
- Approve and fund the correction. Follow the plan’s authorization process, fund the QNEC or process the distribution and retain the calculation supporting the amount.
- Complete notices and reporting. Provide required participant communications and report taxable corrective distributions on Form 1099-R as required.
- Document prevention changes. Record the root cause, data checks and payroll or recordkeeping changes that will reduce the chance of another failure.
Common mistakes that make a correction worse
Treating QNEC as mandatory
A QNEC is not the universal answer to every failed test. Calling it mandatory can lead to an unnecessary employer contribution or an allocation that does not match the plan’s correction terms.
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A QNEC correction is directed to eligible NHCEs under the applicable method. Allocating money to every employee, or excluding an eligible NHCE, can leave the test unresolved.
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Ignoring compensation definitions
The plan’s definition may differ from payroll’s ordinary wages. Bonuses, commissions, severance and excluded compensation must be handled exactly as the document and testing rules require.
Missing the distinction between deadlines
Waiting past the 2½-month point can create an excise-tax issue even if the 12-month correction period remains open. Conversely, relying on an EPCRS period does not erase the requirements that applied during the initial correction window.
Assuming a contribution is a QNEC because it is employer-funded
The IRS Issue Snapshot explains that QNECs are employer contributions other than matching contributions, are not subject to employee election and must meet vesting and distribution-restriction requirements. Not every employer contribution can be counted as a QNEC.
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Certain safe-harbor 401(k) plans do not have to satisfy the ADP test and may also avoid the ACP test if additional conditions are met. Safe-harbor status requires specific contribution design, notice and operational requirements. It is a prospective plan-design choice, not a retroactive cure for a failure that has already occurred.
A sponsor considering a safe harbor should compare the required contributions and notices with the administrative cost and employee demographics. The design must be adopted and operated in accordance with the applicable rules for the future plan year.
When to involve a retirement-plan professional
Get help from the plan administrator, third-party administrator or another qualified retirement-plan professional when the failure involves ownership attribution, missing participants, a change in testing method, a large number of affected employees, approaching deadlines or uncertainty about EPCRS eligibility. Provide the professional with the signed plan document, amendments, payroll files, census, test report and contribution history.
For an individual plan failure, the employer should not calculate a participant’s allocation from a generic percentage or online example. The actual compensation definition, participant list, test results and plan terms control the answer.
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