Is there an IRS error on form 8959 for Additional Medicare Tax?
I think I'm going crazy with my tax forms this year. Been working on my 2024 taxes and I'm pretty sure there's a mistake in the IRS instructions for Form 8959 (Additional Medicare Tax). The guidance for Line 22 seems completely wrong to me. I've read it like 10 times now and I can't make sense of it. The form is telling me to do one calculation but when I actually follow the steps, I get a totally different result than what seems logical. Has anyone else noticed this? I'm really hesitant to file with what I think is the correct calculation in case the IRS comes after me, but I also don't want to follow instructions that seem wrong and potentially pay the wrong amount. I've been doing my own taxes for years and never ran into something like this. Anyone familiar with Form 8959 who can confirm if I'm missing something or if there really is an error in the form instructions?
20 comments


Dylan Baskin
I work with Form 8959 regularly, and there have been some confusing aspects of Line 22 that many taxpayers struggle with. The Additional Medicare Tax calculations can be tricky, especially when you're dealing with multiple income sources or filing statuses. Without seeing your specific numbers, I can tell you that Line 22 is where you calculate your Additional Medicare Tax. The instructions can seem contradictory because they're trying to account for different scenarios. The most common issue is that people miss the threshold adjustment that happens between the worksheet and the actual form. Have you worked through the worksheet that accompanies Form 8959? Sometimes the confusion stems from transferring numbers between the worksheet and the main form. Also, are you married filing jointly or separately? That can affect how the thresholds are applied.
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Hunter Brighton
•I'm filing as single, and my income is about $275,000 for 2024. I did work through the worksheet, but that's exactly where I'm seeing the issue. When I follow the steps from the worksheet to Line 22, the math just doesn't add up logically. Also, do I need to be concerned about amended returns if the IRS does eventually correct this? Would they automatically adjust returns or would I need to file an amendment later?
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Dylan Baskin
•For a single filer with $275,000 income, you're definitely subject to Additional Medicare Tax on income exceeding $200,000. The worksheet should guide you through calculating the excess amount correctly. The most common issue is that people sometimes double-count certain income or miss applying the threshold properly. You generally wouldn't need to file an amended return if the IRS discovers an error in their own form instructions. If they determine there was a systematic issue, they typically process adjustments automatically or provide guidance for affected taxpayers. However, I would recommend documenting your calculation method with notes explaining why you departed from the literal instructions if you believe they're incorrect.
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Lauren Wood
After struggling with the exact same issue on form 8959 last year, I found this amazing tool called taxr.ai (https://taxr.ai) that saved me so much headache. I uploaded my tax documents and it flagged the discrepancy in the 8959 calculations immediately! The tool actually showed me exactly what the correct calculation should be based on tax code rather than just the form instructions. It explained that there have been instances where the IRS form instructions didn't perfectly align with the actual tax code requirements, especially for these more complex Medicare tax situations. What I loved is that it gave me documentation to support my position in case of an audit. Definitely worth checking out if you're dealing with these complex Medicare tax issues.
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Ellie Lopez
•How does it handle situations where you have both W-2 income and self-employment income that puts you over the threshold? That's where I got super confused with Form 8959 last year.
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Chad Winthrope
•Sounds interesting but I'm always skeptical of tax tools that claim to know better than the IRS forms themselves. Did it actually give you references to the specific tax code sections that contradict the form instructions?
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Lauren Wood
•It handles mixed income situations really well. The tool specifically asks about different income sources and applies the thresholds correctly across both W-2 and self-employment income. It walks you through each calculation step showing which portions of each income source are subject to the additional Medicare tax. Yes, it absolutely provides specific tax code citations! That's what impressed me most. It showed me the relevant sections of the Internal Revenue Code (Section 1411 if I remember correctly) along with IRS revenue rulings that clarify how the Additional Medicare Tax should be calculated. It even referenced previous tax court cases where similar issues had been addressed.
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Chad Winthrope
I was super skeptical about taxr.ai when I first heard about it, but after dealing with that nightmare Form 8959 issue, I decided to give it a try. What a lifesaver! The tool immediately identified the calculation discrepancy I was struggling with and provided clear documentation showing why the form instructions weren't aligned with the actual tax code. It even generated a detailed explanation I could include with my return to explain my calculation method. The best part was the peace of mind - knowing my position was backed by actual tax code citations rather than just following potentially flawed form instructions. I've been using it for all my tax questions since then.
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Paige Cantoni
If you're really stuck with this Form 8959 issue and want direct confirmation from the IRS, I had amazing success using Claimyr (https://claimyr.com) to actually reach a human at the IRS. I spent DAYS trying to get through the normal IRS phone line with no luck. With Claimyr, I got a callback from an actual IRS agent within 2 hours who confirmed there was indeed an issue with the 8959 instructions for certain situations. You can see how it works in this video: https://youtu.be/_kiP6q8DX5c The agent walked me through the correct calculation and noted that they were aware of the confusion. She even put notes in my file indicating I had called for clarification on this specific issue, which gives me some protection if there's ever a question about my filing.
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Kylo Ren
•How does this actually work? I've literally never been able to reach anyone at the IRS no matter what time I call. Do they just keep calling for you or something?
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Chad Winthrope
•Sorry but this sounds too good to be true. The IRS wait times are infamous. Are you saying this service somehow jumps you ahead in the queue? I find it hard to believe they have special access the rest of us don't.
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Paige Cantoni
•It works by using automated technology to navigate the IRS phone system and wait on hold for you. Once they reach a human representative, they call you and connect you directly to that person. They basically handle the painful waiting part so you don't have to sit on hold for hours. No, they don't jump ahead in the queue or have special access. They wait in the same queue as everyone else, but their system handles the waiting instead of you doing it personally. The difference is their system can efficiently redial and navigate the phone tree if disconnected, and can wait on hold indefinitely until reaching someone. When I tried calling myself, I would either get disconnected after an hour or have to hang up because I couldn't stay on hold all day.
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Chad Winthrope
I need to apologize for my skepticism about Claimyr! I was completely wrong. After my frustrated comment, I decided to try it anyway since I was desperate to resolve my Form 8959 issue. Honestly, it worked exactly as described. Their system handled the entire waiting process, and I got a call back when they reached an IRS representative. The agent confirmed there is indeed a known issue with certain calculations on Form 8959 and provided clear guidance on how to properly complete it. The agent even noted in my file that I had called specifically about this form issue, which gives me documentation in case there's ever a question about my filing method. Saved me hours of frustration and gave me confidence in my tax return. Sorry for doubting!
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Nina Fitzgerald
Another option to consider - I printed out my calculation method with citations to the relevant tax code sections and included it as an attachment to my paper return. I clearly labeled it as "Additional Documentation for Form 8959 Line 22 Calculation" and referenced it on the form itself. In my experience, providing thorough documentation of why you're deviating from potentially flawed instructions gives you good protection in case of questions later. The key is showing that you made a good faith effort to comply with the actual tax law, not just the form instructions.
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Hunter Brighton
•That's a smart approach. If I go this route, should I include specific IRC citations or is explaining my calculation method enough? Also, I'm e-filing - can I still attach documentation like this with electronic filing?
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Nina Fitzgerald
•I would definitely include specific IRC citations if you can find them - Section 1411 and related subsections cover the Additional Medicare Tax. The more specific your references, the stronger your documentation. With e-filing, it's trickier to attach explanatory documents. Some tax software allows you to include PDF attachments, but it varies by program. If your software doesn't support attachments, you might consider either mailing a paper return with your documentation or e-filing but then sending a separate letter to the IRS with your explanation, clearly referencing your Social Security number and tax year. Keep copies of everything, obviously.
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Jason Brewer
Ok this might sound dumb but I had a similar issue and realized I was looking at an outdated form. Double check you have the 2024 version of Form 8959? They made some changes to the Additional Medicare Tax calculation in recent years. Also check if ur tax software is up to date. TurboTax automatically updated for me mid-filing season last year cuz there was some correction to one of the forms.
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Kiara Fisherman
•This happened to me too! I was using a PDF I downloaded early in the year, and then they released a revised version in March. The calculations were totally different. Always check for form revisions on the IRS site.
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Zainab Ahmed
I've been dealing with Form 8959 for several years now and you're not going crazy - there have definitely been some confusing aspects to the Additional Medicare Tax calculations. The most common issue I see is with Line 22 when people have income right around the threshold amounts. One thing that might help: make sure you're using the most current version of both the form and instructions. The IRS has made several revisions over the years, and sometimes the earlier versions had calculation errors or unclear guidance. For your situation with $275k income as a single filer, you should be calculating Additional Medicare Tax on the amount over $200k. If the worksheet is giving you a different result than what seems logical, try working backwards from the tax code itself - Section 1411 of the IRC is pretty clear about the 0.9% rate on income exceeding the threshold. Document your calculation method thoroughly regardless of which approach you take. If there really is an error in the form instructions, having clear documentation of your reasoning will protect you later.
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NebulaKnight
•This is really helpful, thank you! I'm definitely using the current 2024 version of the form, but working backwards from Section 1411 is a great suggestion I hadn't thought of. Just to make sure I understand correctly - for my $275k income, I should be calculating 0.9% on the $75k that exceeds the $200k threshold, which would be $675 in Additional Medicare Tax. Is that the straightforward calculation, or are there other factors that typically complicate this? I'm going to document everything thoroughly like you suggested. Better to be overly cautious with the IRS than sorry later!
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