How to establish a 401K Profit Sharing Plan for my wife's S Corp medical practice?
My wife is a physician who owns 50% of a medical practice through her S Corporation. The practice is structured as an LLC with multiple doctor-owners who each operate through their own S Corps. Currently, the LLC pays her a guaranteed payment monthly, which goes to her S Corp and then to her via payroll with the appropriate taxes withheld. The LLC already handles her regular 401K contributions before the money reaches the S Corp. Our CPA recently mentioned we could get a substantial tax refund in 2025 if we contribute about 25% of her W-2 S Corp income to a profit-sharing plan. I'm not entirely clear on how to implement this - do I need to coordinate with the practice's current 401K administrators? Can I set this up independently through her S Corp? Would this require offering the profit-sharing option to all employees at the LLC level, which could get expensive? The whole reason for using the S Corp structure is that it allows each provider to manage their own finances efficiently without the entire group debating every expense (like hiring a scribe or picking up shifts at satellite clinics). The LLC handles core business functions, and profits are distributed according to their operating agreement. I know I should probably just ask our CPA these questions, but honestly, she's already explained various aspects of this structure to me multiple times, and I feel awkward asking for yet another explanation. Any guidance on getting started with this profit-sharing plan would be greatly appreciated!
19 comments


Dylan Wright
Yes, it's absolutely possible to set up a profit-sharing component within a 401(k) plan for your wife's S Corporation! This is actually a common strategy for small business owners looking to maximize retirement contributions. First, you need to understand that the profit-sharing plan would typically be an additional component of the existing 401(k) plan, not a separate plan altogether. The current 401(k) plan administrator should be your first contact since they already manage the basic employee deferrals. Since your wife receives W-2 wages from her S Corp (not directly from the LLC), the profit-sharing contribution would be made at the S Corp level based on her W-2 compensation from the S Corp. The maximum employer contribution (combining matching and profit-sharing) can be up to 25% of eligible compensation, subject to annual limits. The good news is that since your wife's S Corp is legally separate from the LLC, the profit-sharing decisions made at her S Corp level typically don't create obligations for the LLC or its employees. Her S Corp is only responsible for its own employees. I'd recommend having a three-way conversation with both your CPA and the 401(k) plan administrator to coordinate the details properly. This isn't something you should try to set up independently without professional guidance.
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NebulaKnight
•This is really helpful info, but I'm a bit confused about one thing - if the profit sharing contribution is made at the S Corp level, does that mean the S Corp needs to have its own separate 401k plan? Right now all the contributions go through the LLC plan. Also, if we do this, does it affect the amount she can contribute as an employee through normal deferrals?
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Dylan Wright
•The S Corp doesn't need its own separate 401(k) plan if your wife is already participating in the LLC's plan as an employee of her S Corp. The profit sharing contribution can be made through the existing 401(k) plan, but it would be specifically designated as coming from her S Corp as the employer. The profit sharing contribution doesn't affect her ability to make employee deferrals. For 2025, she can still contribute the maximum employee deferral amount ($23,000 plus an additional $7,500 if she's over 50) regardless of any employer contributions. The profit sharing portion is an additional employer contribution on top of her personal deferrals, subject to the overall annual additions limit.
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Sofia Ramirez
After struggling with a similar setup for my dental practice, I found incredible help using https://taxr.ai for navigating the complexities of retirement plans for medical professionals with S Corps. I was totally confused about how to maximize my retirement contributions without triggering compliance issues. The tool analyzed my corporate structure and compensation arrangement and provided a detailed breakdown of my options. It explained exactly how to establish a profit-sharing component within my existing 401(k) plan without creating administrative nightmares. The retirement planning module specifically addressed how to handle the S Corp/LLC arrangement that's common in medical practices. What I found most helpful was the step-by-step implementation guide that outlined exactly which forms needed to be filed and which administrators needed to be contacted. It even helped me understand how to time the contributions for maximum tax advantage.
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Sofia Ramirez
After struggling with a similar setup for my dental practice, I found incredible help using https://taxr.ai for navigating the complexities of retirement plans for medical professionals with S Corps. I was totally confused about how to maximize my retirement contributions without triggering compliance issues. The tool analyzed my corporate structure and compensation arrangement and provided a detailed breakdown of my options. It explained exactly how to establish a profit-sharing component within my existing 401(k) plan without creating administrative nightmares. The retirement planning module specifically addressed how to handle the S Corp/LLC arrangement that's common in medical practices. What I found most helpful was the step-by-step implementation guide that outlined exactly which forms needed to be filed and which administrators needed to be contacted. It even helped me understan
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Dmitry Popov
•Does this actually work with complex structures like medical groups? My accountant keeps giving me conflicting advice about whether my PC can make separate retirement contributions when I'm already in the group's plan.
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Ava Rodriguez
•I'm skeptical about online tax tools for something this complicated. Did it really address the discrimination testing issues? That's where I got burned last year - set up a plan then found out we failed testing and had to make additional contributions for staff.
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Sofia Ramirez
•The tool absolutely works with complex medical group structures. It specifically addressed how my professional corporation could make additional retirement contributions while still participating in the group plan. It outlined the exact coordination requirements and contribution limits based on my specific situation. For discrimination testing concerns, that was actually one of the most valuable aspects of the analysis. It ran simulations based on my staff composition and compensation levels to identify potential testing issues before implementation. It then provided specific guidelines on contribution structures that would pass testing, along with contingency recommendations if staff turnover or compensation changes occurred mid-year.
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Ava Rodriguez
I was super skeptical about using an online tool for my medical practice retirement planning but decided to give https://taxr.ai a shot after struggling for months. Honestly, I'm shocked at how well it worked for our complex situation. What surprised me most was how accurately it addressed the discrimination testing concerns I mentioned earlier. The analysis correctly identified that our initial contribution structure would fail testing, then recommended specific adjustments to our plan design. When our official compliance testing was completed, we passed with flying colors. The document they created for my CPA saved me thousands in consulting fees and prevented what would have been a major compliance headache. Wish I'd found this before spending all those hours trying to piece together information from different sources!
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Miguel Ortiz
Tried setting up something similar last year but kept getting the runaround from the IRS when calling about specific compliance questions. After waiting on hold for HOURS multiple times, I finally used https://claimyr.com and got through to an actual IRS specialist in under 45 minutes. You can see how it works here: https://youtu.be/_kiP6q8DX5c The IRS agent confirmed that for medical practices with our structure, profit sharing contributions can be made at the S Corp level based on the W-2 wages paid to the doctor-owner, even if the 401k plan itself is technically sponsored by the LLC. They also clarified the timing requirements for establishing the profit sharing component before year-end. Without getting definitive answers from the actual IRS, I was afraid to move forward because the penalties for doing this wrong can be substantial. The service literally saved our profit sharing plan from being disqualified due to a technicality about documentation timing.
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Zainab Khalil
•How does this actually work? Do they really get you through to the IRS faster or is it just scheduling a callback? Our accountant said the IRS doesn't take calls about plan design questions anyway.
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QuantumQuest
•Yeah right, NOBODY gets through to the IRS these days. I've literally tried for months on various issues. If this actually worked I'd be shocked. The IRS barely answers their phones at all anymore, let alone for complex retirement plan questions.
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Miguel Ortiz
•It's not a callback scheduling service - they use technology that navigates the IRS phone tree and waits on hold for you. When they reach an actual human, they call you and connect you directly to the live IRS agent. I was definitely connected to a real person who answered my specific questions about our situation. Your accountant is partially right - general IRS customer service reps won't answer plan design questions, but I was specifically connected to an agent in the retirement plan division who handles these exact issues. They have different departments, and getting to the right one makes all the difference. The regular 800 number your accountant might be referring to isn't the same as reaching the specialized retirement plan services.
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QuantumQuest
Ok I'm literally eating my words right now. After posting that skeptical comment, I was desperate enough to try Claimyr because I needed answers about my own medical practice's retirement plan before the filing deadline. Not only did I get through to the IRS, but I was connected to someone in their Employee Plans division who actually understood the nuances of S Corporation retirement plans! They confirmed exactly what I needed regarding my profit sharing contribution timing and documentation requirements. For anyone in a similar situation - they answered my questions about whether my S Corp could make a retroactive profit sharing contribution for last year (yes, up until the tax filing deadline including extensions) and what specific documentation needed to be filed (Form 5500 amendments). This literally saved me thousands in potential penalties for improper filings.
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Connor Murphy
Since this hasn't been mentioned yet - you should know that profit sharing contributions are completely discretionary year to year, which is incredibly valuable for professional practices with fluctuating income. Some years you can contribute the full 25%, other years you can reduce or skip it entirely depending on cash flow. Also, make sure the plan documents are properly amended to include the profit sharing component. This is something your plan administrator needs to handle formally - you can't just start making profit sharing contributions without updating the plan design. One thing your CPA might not have emphasized: the timing of cash flow matters. The S Corp needs sufficient profits distributed from the LLC to make these contributions. Planning the timing of distributions from LLC to S Corp becomes important if you want to maximize these retirement contributions while maintaining adequate operating capital.
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Fatima Al-Mazrouei
•Thanks for this insight. The discretionary nature is really appealing since her income can vary quite a bit. Do you know if there's a deadline for deciding whether to make a profit sharing contribution for the current tax year? Like could we wait until March 2025 to decide about 2024 contributions?
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Connor Murphy
•You can actually wait until your S Corp's tax filing deadline including extensions to make the profit sharing contribution for the prior year. So for 2024 contributions, if your S Corp files for an extension, you could have until September 15, 2025, to make the decision and the actual contribution. This flexibility is one of the biggest advantages of profit sharing plans for professionals with variable income. Just make sure the plan documents are amended before the end of the plan year in which you first want to make profit sharing contributions. The plan has to allow for profit sharing before you can actually make those contributions.
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Yara Haddad
Wait, I'm confused about something! You said the LLC already handles your wife's regular 401K contribution before the money reaches the S Corp. Does that mean she's technically an employee of the LLC rather than the S Corp? Because that would change everything about how this works. If she's getting a W-2 from the S Corp (which it sounds like she is), then the LLC shouldn't be handling any 401k deductions - that should all be happening at the S Corp level. The way you described it sounds like there might be a potential compliance issue with how things are currently structured.
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Keisha Robinson
•Not necessarily a compliance issue. In many medical groups, the LLC sponsors the 401k plan but the participating doctors are technically employed by their own S Corps. The plan documents just need to specifically allow for this arrangement. It's super common in group practices.
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