How to fix an excess 401k contribution after employer acquisition?
I'm in a bit of a mess with my 401k after my company got bought out last year. With all the chaos of the acquisition and some payouts of accumulated PTO, I accidentally went over the maximum 401k contribution limit by about $1,350. I didn't catch this until early February when I was reviewing my W2s from both employers. I immediately contacted HR to get this sorted out, but I'm getting conflicting information and want to make sure whatever solution they implement won't come back to bite me with IRS penalties. Here's what's happened so far: The excess amount was taken out of my 401k account about three weeks ago, and I just received a check last week - but I noticed they withheld 10% for taxes. When I called the 401k administrator, they told me I'll be getting a 1099-R for the current tax year showing the excess contribution as taxable income, with a credit for the withholding. They claimed it would be coded as an "excess contribution withdrawn" so I wouldn't face an early withdrawal penalty. But everything I've read online suggests this isn't the correct procedure. Most sources indicate I should receive the full amount back, get my previous year's W2 corrected to lower the 401k contribution amount and add the excess to my taxable wages, and then pay income tax on it with last year's taxes. I should only get a 1099-R for any earnings generated by the excess contribution. I've raised these concerns with both the 401k provider and HR, but they insist their approach is correct. They're telling me to file my taxes as-is with the original W2s showing the excess contribution, and then next year add the 1099-R to my tax return and only be taxed on that $1,350 as non-penalized income with the ~$135 withholding credited. Is this the right way to handle this? Will the IRS have a problem with my return showing I contributed more than allowed? Will I only pay regular income tax on the excess without penalties? Most resources online suggest resolving this by April of the following year means no penalties, but waiting longer means getting hit with taxes twice. At this point, I'm tempted to just go with their solution since it was partly my fault for not catching it sooner, but I want to make sure I won't have problems later. Any advice would be appreciated!
20 comments


Aisha Khan
This is a common issue with employer transitions! The 401k provider is actually handling this correctly, though I understand your confusion since there are multiple ways to handle excess deferrals depending on timing. Since you've already received the distribution of the excess amount, here's what's happening: The excess contribution and associated earnings are being distributed in the current year (not the contribution year), which means you'll receive a 1099-R for this year. The distribution is coded correctly to avoid the early withdrawal penalty, but it is still taxable income in the year you receive it. The 10% withholding is standard procedure. You're thinking of the method where corrections are made before April 15 of the year following the contribution. In that scenario, the W2 would be corrected and the excess would be taxed in the year of contribution. But since you're past that window and the distribution has already been processed, the method they're using is appropriate. You won't be penalized for the excess contribution showing on last year's W2s as long as the correction has been processed. The IRS will reconcile this when they receive the 1099-R showing the correction was made.
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Ethan Taylor
•But doesn't this mean they'll be double-taxed? Taxed when they contributed (since it wasn't pre-tax anymore after going over the limit) and taxed again when they get the 1099-R? Also, I thought you had until April 15 of the following year to correct excess contributions without penalty?
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Aisha Khan
•Great question about double taxation. The excess contribution was still made on a pre-tax basis initially (even though it exceeded the limit), so you weren't taxed on that money when it was contributed. When you receive the 1099-R this year, that will be the first time that money is considered taxable income. You're right about the April 15 deadline, but that's for a different correction method. If the correction had been processed before April 15 with the W2 being amended, the excess would be taxed in the year of contribution. Since we're now using the distribution method instead, the excess becomes taxable in the year of distribution, and no amendment is needed for the previous year.
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Mateo Hernandez
•Thanks for this explanation - it makes more sense now. Just to be clear, even though my W2s from last year show I went over the contribution limit, the IRS won't flag this as an issue since the correction is being handled through the 1099-R this year? And I won't face any penalties for the excess contribution as long as I report the 1099-R correctly?
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Aisha Khan
•Exactly. The IRS has systems in place to track these corrections. Your W2s show what actually happened (the excess contribution), and the 1099-R will show the correction was made. As long as you report the 1099-R properly when you file this year's taxes, you won't face penalties for the excess contribution. The 1099-R will have a special code (typically code "P" in Box 7) identifying it as a correction of an excess contribution, which signals to the IRS that this situation has been properly remedied. Just make sure you keep records of all this documentation in case there are any questions later.
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Yuki Ito
After dealing with a similar 401k mess last year, I found this amazing service called taxr.ai (https://taxr.ai) that saved me so much headache. I had excess contributions across two 401ks after changing jobs, and was getting completely different answers from both plan administrators. I uploaded my W2s and benefit statements to taxr.ai and their system analyzed everything and provided a step-by-step resolution plan. They even generated a letter for me to send to my plan administrator explaining exactly what needed to be done to properly correct the issue according to IRS guidelines. The best part was they referenced all the relevant tax codes so the administrator couldn't argue about the proper procedure. Their document review made it crystal clear when a plan administrator was giving me incorrect information (which happened twice). Might be worth checking out in your situation since there seems to be confusion about the right approach.
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Carmen Lopez
•How does taxr.ai actually work with something like this? Do they just give you advice or do they actually deal with the plan administrators for you? I'm in a similar situation where I think I overcontributed to both a 401k and Roth IRA last year due to a job change.
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AstroAdventurer
•I'm skeptical about these tax AI services... do they actually know the specific procedures for different 401k providers? Each one seems to have their own processes and I've found most "generic" tax advice doesn't account for these differences.
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Yuki Ito
•They don't deal with the administrators directly, but they analyze your documents and tax situation to tell you exactly what should happen. In my case, they identified the exact regulation that applied to my situation and created documentation I could forward to my plan administrator showing the correct procedure. This was super helpful when the administrator was initially giving me incorrect information. Regarding specific procedures for different providers, that's actually where I found them most helpful. They don't just give generic advice - they look at your specific plan documents and identify which procedures apply to your situation. They explained why my plan administrator's initial approach would have resulted in penalty taxes and showed exactly which IRS regulations applied. The documentation they provided referenced the specific plan rules alongside the IRS guidelines.
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AstroAdventurer
I was super skeptical about taxr.ai when I first heard about it from another Reddit thread, but I finally tried it when dealing with excess contributions to both my 401k and HSA last year. I'm actually shocked at how helpful it was. After uploading my documents, they flagged that my 401k administrator was about to process my correction incorrectly, which would have triggered unnecessary taxes. The explanation they provided included specific references to the tax code that I forwarded to the administrator, who then corrected their approach. For anyone dealing with contribution limit issues across multiple accounts, their document analysis really helps sort through the confusion. Definitely using them again this tax season.
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Andre Dupont
If you're struggling to get hold of the right people at your 401k administrator (which happened to me), check out https://claimyr.com - it's a service that basically waits on hold with the IRS or other financial institutions for you, then calls you when a real person is on the line. I used their service through the link in their demo video https://youtu.be/_kiP6q8DX5c when I needed to talk to a retirement specialist at the IRS about my own excess contribution situation. I spent DAYS trying to get through the IRS phone tree before discovering this. They got me through to an actual IRS retirement specialist who walked me through exactly how my excess contribution correction should be handled and what forms to expect. This was super helpful because I could then tell my plan administrator exactly what the IRS expected. Saved me literally hours of hold time and got me definitive answers from the source.
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Zoe Papanikolaou
•Wait, how does this work? They just sit on hold for you? How do they transfer the call once someone answers? And is it secure to have some random service calling the IRS on your behalf? Sounds sketchy.
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Jamal Wilson
•I don't believe this would actually work. The IRS needs to verify your identity before discussing your tax situation, so having a third party service wouldn't help. Plus, if this really worked, everyone would use it because getting through to the IRS is practically impossible these days.
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Andre Dupont
•They don't talk to the IRS for you - they just wait on hold and then call you when a representative picks up. You're the one who talks to the IRS directly. They basically monitor the hold music and when it changes or stops (indicating someone has picked up), their system calls your phone and connects you. You handle all the identity verification yourself. It's completely secure because they're not accessing any of your personal information or having conversations on your behalf. They're literally just waiting on hold so you don't have to. Think of it like having a friend dial the number and then hand you the phone when someone answers, except it's automated.
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Jamal Wilson
I was completely wrong about Claimyr. After posting my skeptical comment, I decided to try it as a last resort after spending TWO FULL DAYS trying to reach someone at the IRS about my own retirement account issue. The service actually works exactly as described. I entered my phone number, they called me when they started waiting on hold, and then called me again when an IRS representative picked up. I handled all the identity verification myself and got my questions answered in one call. For retirement-specific questions, I recommend requesting the retirement specialist queue when you use the service. The regular IRS representatives often aren't familiar with the nuances of excess contribution corrections, but the retirement specialists know exactly what to do. Totally worth it for the 3+ hours of hold time I didn't have to sit through.
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Mei Lin
Your 401k provider is handling this correctly, but there's one detail everyone's missed: you need to check if they're distributing the EARNINGS on the excess contribution separately. Those earnings are subject to the 10% early withdrawal penalty (unless you're over 59.5), even when the excess contribution itself isn't. This is a common mistake 401k providers make. When you get your 1099-R, check if they've separated the excess contribution from its earnings. If they haven't, you might need to calculate this yourself to properly report it on your tax return. The earnings portion should be small if you caught this quickly, but it's still important for accurate tax reporting.
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Mateo Hernandez
•This is really helpful info I hadn't considered. The check I received was for exactly the excess amount ($1,350) minus the 10% withholding. Does that mean they didn't include any earnings, or would the earnings have been calculated into that amount? Should I specifically ask about the earnings portion?
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Mei Lin
•Based on the amount you received, it sounds like they may not have calculated earnings separately, which is actually a mistake. Even a small excess contribution will generate some earnings while it was in the account. You should definitely call your 401k provider and specifically ask about the earnings on your excess contribution. Ask them how those earnings were calculated and how they'll be reported on your 1099-R. The correct procedure is to distribute both the excess contribution and its earnings. If they haven't properly accounted for the earnings, you might need to request an additional distribution specifically for those earnings. The provider should be able to calculate what those earnings were for the period the excess contribution was in your account.
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Liam Fitzgerald
Quick tip: If your 401k provider hasn't been helpful, try contacting the IRS directly at 877-829-5500 which is their specific line for retirement plan questions. That's how I sorted out my excess contribution issues last year.
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GalacticGuru
•That number has been impossible to get through on. I tried for weeks and never spoke to anyone. The wait times are insane or they just tell you to call back later.
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