Mistake of Fact Contributions (2024)

We see it happen on a regular basis. Usually as the result of a miscommunication, a retirement plan sponsor makes an erroneous contribution to the plan. This can cause unintended and unwanted consequences, often including nondeductible and/or disallowed amounts. What can be done?

Contributions to a qualified retirement plan are generally irrevocable. In this article we’ll focus on single-employer plans; there are separate but similar rules for multiemployer plans which we will not include here.

Under ERISA Section 403(c), plan assets are “for the exclusive purpose of providing benefits to participants in the plan and their beneficiaries and defraying reasonable expenses of administering the plan.” Diverting funds could compromise the accrual and/or security of benefits. However, in specific instances, contributions may be returned to the plan sponsor if there is a mistake of fact contribution.

While the IRS has not explicitly defined a mistake of fact contribution, it is different than a non-deductible contribution. Typically, mistake of fact instances include a disallowance of deduction, failure of the plan to initially qualify under 401(a), or mathematical or typographical errors. Ultimately, a private letter ruling may be the best method to determine if a mistake of fact contribution occurred.

If there is a mistake of fact contribution, the contribution must be returned to the plan sponsor within 12 months of the mistake. Earnings on the contribution are ignored in the reversion, but losses must be recognized. If the plan failed to initially qualify under 401(a), all assets are returned to the employer.

There is a de minimis rule in the case of a defined benefit plan making quarterly contributions. If there is a disallowance of deduction of less than $25,000, IRS approval is not required. However, an explanation of this specific instance must be included as an attachment to the Form 5500 filing. It is also important to check the terms of your plan document regarding mistake of fact contributions.

If the money is stuck in the plan, and an excess contribution occurs, what are our options if we cannot revert the money to the plan sponsor?

Let’s look at an example of an individual who is not yet age 50 and thus not eligible for catch-up contributions, and who earned $300,000 in 2023. This individual defers $2,000 per month to their 401k plan. Their employer contributes 15% of pay with every monthly paycheck (sounds like a generous employer). At the end of 2023 the employee has deferred $24,000, $1,500 over the 402(g) deferral limit. The employer has contributed $45,000, making the total contribution of $69,000, well in excess of the 415(c) limit of $66,000. What can they do?

The excess deferral can be corrected by distributing $1,500 to the participant (with earnings), so long as it is done so by the tax filing deadline. But what if the deferral is not correct by the tax filing deadline? Or what if the plan limited deferrals to 5% of compensation? Would the IRS consider this a mistake of fact contribution? The answer depends on the facts and circ*mstances surrounding the situation. In the case of the plan limiting deferrals to 5% of compensation, would an 11(g) corrective amendment be a better approach?

Let’s assume the excess deferral was corrected by distributing $1,500 to the participant. We are still $1,500 over the 415(c) limit. This amount (with earnings) can be allocated to a suspense account. The money in the suspense account can then be used to make contributions for other employees in the current or future years, or can be reallocated to the same participant in future years. Alternatively, if some of this contribution was deposited in 2024 instead of 2023, the contribution could be reallocated to 2024 without making an adjustments to the participant’s account.

While the information in this article provides a specific example, it is important to note that every situation is different. There may be additional tax factors to consider as well. If you have made an excessive contribution to a retirement plan, it is wise to consult with ERISA council, and if applicable, your plan’s actuary and CPA to determine your best course of action.

Jeffry Lamb, EA, MAAA is owner and consultant of Independent Actuaries, Inc.

Mistake of Fact Contributions (2024)

FAQs

What is a mistake of fact contribution? ›

While the IRS has not explicitly defined a mistake of fact contribution, it is different than a non-deductible contribution. Typically, mistake of fact instances include a disallowance of deduction, failure of the plan to initially qualify under 401(a), or mathematical or typographical errors.

What does "mistake of fact" mean with a 401k? ›

The IRS has defined “mistakes of fact” to include mathematical and typographical errors that occur during the contribution process.

How do I correct an incorrect 401k contribution? ›

Addressing The Error

Failure to withhold according to the employee's election can generally be corrected under the IRS Self Correction Program. The IRS program states that in the event too much 401(k) was withheld, participants should be refunded the excess contribution.

How to correct missed 401k deferrals? ›

Corrective action: Generally, if you didn't give an employee the opportunity to make elective deferrals to a 401(k) plan, you must make a qualified nonelective contribution to the plan for the employee. This contribution must compensate for the missed deferral opportunity.

What are examples of mistakes of fact? ›

For instance, a mistake of fact has occurred when someone unintentionally takes another's property, believing it to be their own, or if two people agree on a contract but do not realize that they both have a different interpretation of the agreement.

Is mistake of fact an excuse? ›

In criminal law, a mistake of fact can usually operate as a defense so long as it is reasonable. With crimes that require specific intent, even an unreasonable mistake of fact might work as a defense.

Does mistake of fact have to be reasonable? ›

In most situations, the mistake must be reasonable. But even an unreasonable mistake of fact can at least at times provide a defense if it negates a required specific intent.

What happens if you accidentally over contribute to 401K? ›

What Happens If You Go Over the 401(k) Contribution Limit? If you exceed the 401(k) contribution limit, you will have to pay a 10% penalty for early withdrawal, as you must remove the funds.

Can an employer take back their 401K match? ›

Your employer gets to take back any unvested contributions. If there was no vesting schedule — in other words, if 100% of employer contributions vested immediately — then it's all yours. (Of course, any money you put in yourself is always yours either way.)

What happens when there's a mistake in your 401(k)? ›

Errors can lead to plan disqualification, which can have significant ramifications for the plan sponsor and participants. The plan sponsor loses the tax deduction for any employer contributions, and all participant contributions and any earnings are immediately taxable to participants—a scenario no one wants.

Can you undo a 401k contribution? ›

However, it's important to understand that per IRS guidelines, once contributions are made into a 401(k) plan, they can rarely be reversed, even when adjustments are made within payroll.

Can an employer match 100% of 401k contribution? ›

These matches are made on a percentage basis, such as 25%, 50% or even 100% of the employee's contribution amount, up to a limit of total employee compensation.

Can I adjust my 401k contribution? ›

Government regulations allow employees to adjust their 401(k) contributions at least quarterly, but many companies permit changes at any time. Employees can change their contribution amount multiple times each year, but the exact frequency depends on their company's retirement plan guidelines.

What is a corrective contribution? ›

Corrective Distribution of Excess Contributions. Generally, if the contributions made for you during the year to certain retirement plans exceed certain limits, the excess can be corrected. The excess is distributed to you by the plan (along with any income earned on the excess).

What is considered a late 401k contribution? ›

For smaller businesses, there is a safe harbor that allows for more time to deposit. The safe harbor is explained below. For all businesses, the deposit should never occur later than the 15th business day of the month after the contributions were withheld from employee wages.

What is an example of a case involving a mistake of fact? ›

If you walk into a store, stuff a candy bar in your pocket, and walk out, you've committed a theft. On the other hand, if you go through the checkout with two candy bars and the cashier only charges you for one, you could argue that you did not realize the cashier had failed to scan both candy bars.

What is a mistake of fact due to reasonable cause? ›

The California jury instruction for a mistake of fact defense can be found at CALCRIM 3406, which states that: “The defendant is not guilty if they did not have the intent or mental state required to commit the crime because they reasonably did not know a fact or reasonably and mistakenly believed a fact.”

What is mistake of fact in a will? ›

The mistake of fact might be a mistake as to the person named or a mistake in the motive or reason of the testator. As to the mistake in the person named at Roman law an error as to the persofi invalidated the will, and if the testator intended to insert A as his heir and by error inserted B, the inheritance falls.

What is the difference between mistakes of fact and mistakes of law? ›

A mistake of law differs from a mistake of fact, which is a mistake about a material fact and is more likely to operate as a defense in criminal law. A mistake of law is also known as an error in law or error of law.

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