This is a little bit of a twist on another question that has been asked in this community. My wife started a new job in February, after which she had contributed about $2,000 through her previous employer's 401k, which did not have a matching policy. The new employer has a generous 50% matching policy. Originally we were going to manually cap out her contributions through the new employer at $17,500, in order to avoid the excise tax, but maximize the $8,750 in matching contributions.

But, since 50% free money is much higher than 6% tax, I'm realizing that it might make sense to contribute a full $19,500 through the new employer to take advantage of an additional $1,000 in matching, even though it would mean the excise tax and being double taxed on the amount. If I assume 25% tax rate, that would be $500 excess tax, plus the 6% excise tax of $120, is $670, which is still less than $1,000 in free money. Am I missing something here?

Note that the new employer does not know or care how much she contributed to the previous employer (we asked in the context of having them systematically limit her contributions this year), And the previous employer will not allow her to remove the $2,000 contribution.

  • 3
    Are you absolutely sure that the new employer will match at 50% with no ceiling? Also, your number of $17,500 seems to reflect the IRS contribution limit for 2020 of $19,500. Where does "contributing a full $19,000" come from?
    – spuck
    Commented Oct 20, 2020 at 16:59
  • 3
    I'm with spuck on this. It would be extremely unusual for a company to have an unlimited match on 401k contributions. Read the policy closely and make sure before you do this.
    – JohnFx
    Commented Oct 20, 2020 at 17:58
  • If I'm reading this correctly you are planning to over-contribute $2k in order to get another $1k in matching. You mention that the money is taxed twice but your math does not reflect that: the taxes on $2k would be 2000 x (0.25 x 2) + 2000 x 0.06 = $1,120.
    – Nosjack
    Commented Oct 20, 2020 at 19:14
  • Sorry, let me clarify my math on the tax. I meant to say $500, not $250, (0.25 x $2,000). But it wouldn't be fair to count it twice in my math since the entire 401k would be taxed anyway. So just the portion that is double taxed is what I would count toward the penalty. I will edit the post now to reflect this. Commented Oct 20, 2020 at 20:16
  • I can confirm that the employer matches 50% up to the full contribution. The company is in the Fortune 10. Commented Oct 20, 2020 at 20:18

2 Answers 2


I think this question really boils down to:

If I over contribute to my 401k across multiple companies, can I choose which company to undo the excess contribution from?

In your case, obviously you'd prefer to undo the contributions from the first company. This article suggests that you can choose:

You can take the corrective distribution from any account. ... Likewise, when two or more employers are involved, you can take the corrective distribution from the plan where you made the earlier contribution — if you can get the former employer to cooperate. The key is to get your total down to the limit with a distribution from some account by April 15.

Now if we assume that you can remove the first contribution, you need to figure out how to do it because you mentioned the first employer is not cooperating. This article suggests that to undo an over contribution you have another avenue:

If you overcontributed to your 401(k) plan—that is, you contributed more than the annual maximum set by the IRS—you should notify your employer or the plan administrator immediately. Ideally, this notification should be provided by March 1 of the year after the excess deferral contribution, as it's technically known, occurred.

If your employer isn't cooperating, you could try the plan administrator. It's the administrator's job to handle these sort of requests, and assuming they do, the company will have no choice but to issue a corrected W2.

Side Note: If you're going to do this, you might want to wait until Jan 1 next year before contacting the first company's plan administrator. I'm not sure they would be OK undoing a future over-contribution that hasn't happened yet, and I wouldn't recommend "knowingly" over-contributing on purpose either, because you may be stepping over a legality line. But, once the over-contribution has occurred, regardless of what caused it, the administrator would have to oblige your request, because if they don't then I assume they would be the ones breaking the law.

  • This is a really helpful answer with some great links. I shorthanded it when I said "he previous employer will not allow her to remove the $2,000 contribution" in order to not further complicate the scenario. But, the reality is that she already rolled over the 401k to a Vanguard IRA. My guess is that makes the prior employer's plan administrator unable to assist? Commented Oct 22, 2020 at 23:57
  • @JasonRubinstein oh wow. That is quite the missing detail! I agree- they likely can't help you once the funds are out of their hands.
    – TTT
    Commented Oct 23, 2020 at 3:35
  • 1
    It makes the case to wait until the calendar year is over before rolling over the 401k. A lesson learned for next time. The reason why I was quick to have her roll it over was from a different lesson I had previously learned the hard way: after not rolling over my prior employer's 401k, 2 years after I left the company they took out a few hundred dollars after completing an audit. I was shocked they could do that, but as long as it's in their hands, they technically control the money. Commented Oct 23, 2020 at 14:01

First off, the 6% excise tax only applies to IRAs, and also applies every year the over contribution is in the account, until you correct it. Since you're talking about a 401k, this does not apply. [Some sites mention 6% taxes for over contributing to a 401k but I can't find that in the IRS documents. The only mention I see is regarding IRAs. If someone offers a source I will edit.]

Now, there are really two possible ways this works out:

  1. Your wife over-contributes $2,000 for the year and then withdraw the contribution and any earnings prior to April 15th of the following year. Taxes are paid on the $2k like normal income. However, since she withdrew the contribution her employer will most likely reverse any matching funds. In this case, $1,000. It is almost like you never made the over-contribution.
  2. Your wife over-contributes $2,000 and keeps it in the account "forever" (or so you think). But, the IRS contacts the employer and tells them that they are not following the "Qualified Plan" rules. From the IRS:

Also, if the entire deferral is allowed to stay in the plan, the plan may not be a qualified plan.

"Not qualified" is IRS speak for "no tax breaks". Rather than make all employees pay taxes on their 401k contributions, the employer will force you to reverse the contribution. If this happens then you will pay income taxes on the money twice, once for the original contribution and once for when the money is returned to you (since it doesn't get added to the cost basis). With a 25% tax bracket this works out to $2,000 * (0.25 * 2) = $1,000 due in taxes. On top of that, since the money wasn't a qualified contribution the employer will most likely still take out their matching funds. So you lose another $1,000.

  • 2
    It looks like I might have read fake news on a legal blog about the 6%. On the 2 possible ways it would work out that you've outline, both of those are based on her current employer being held accountable to overcontribution. But since it's across 2 different companies, how would the IRS "blame" the current company? Commented Oct 20, 2020 at 20:22
  • @JasonRubinstein I would assume the IRS would hold responsible the employer at the time that the contribution limit is broken. In other words, your wife would have over-contributed while working with employer #2, so it's their job to fix it.
    – Nosjack
    Commented Oct 21, 2020 at 12:44
  • Do you have a source for an employer reversing matching funds in such a scenario? I've heard this strategy mentioned before and this was never brought up as a possibility.
    – Craig W
    Commented Oct 22, 2020 at 19:23

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