Understanding S-Corp Employer Contributions to Solo 401k - Maximum Limits?
I'm so frustrated right now because I can't get a straight answer about my S-Corp retirement contributions. I've owned my marketing agency for about 4 years, and I'm taxed as an S-Corp. Currently I pay myself a salary of $105k and get a W2 for that amount. The business is doing well, and I want to maximize my solo 401k contributions as an employer, but I'm getting totally contradicting information. My accountant is telling me that employer contributions are based on the net earnings of my business (which would be significantly higher). But when I talked to my financial advisor yesterday, she insisted it's calculated as 25% of my W2 salary - so around $26,250. Can someone please settle this for me? I'm trying to plan for retirement and tax strategy, but these two professionals are giving me completely different answers! Has anyone else with an S-Corp dealt with this specific situation? Thanks in advance!
34 comments

Andre Laurent
Your financial advisor is closer to being correct, but there's a small detail to clarify. For S-Corps, employer contributions to a solo 401k are limited to 25% of your W-2 compensation, but it's actually 25% of your gross salary, not your net salary. So based on your $105k salary, you could contribute up to $26,250 as the employer contribution. The confusion might be because for sole proprietors or single-member LLCs, the calculation is different and is based on net earnings (profit minus half of self-employment tax). But since you're structured as an S-Corp and paying yourself a W-2 wage, the calculation is more straightforward. You can also make employee contributions up to $22,500 for 2023 (plus catch-up contributions if you're over 50), which is separate from the employer contribution. This means your total potential contribution could be $48,750 ($26,250 employer + $22,500 employee) excluding any catch-up amounts.
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Carmen Diaz
AuthorThank you so much for the clear explanation! So to confirm, since I'm an S-Corp owner paying myself W-2 wages, the employer contribution limit is definitely based on my W-2 salary and not the overall business profit? That's a huge difference in my case. Also, do distribution payments factor into this calculation at all? I take quarterly distributions in addition to my salary.
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Andre Laurent
The employer contribution is definitely based on your W-2 compensation only, not on the overall business profit or distributions. This is one of the clear distinctions for S-Corps compared to other business structures. Your distributions don't factor into the calculation at all for 401k contribution purposes. Distributions aren't considered earned income - they're a return on your investment in the business. Only your actual W-2 wages are used to calculate your maximum employer contribution to the solo 401k.
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Emily Jackson
I was in the exact same situation last year with conflicting advice. Used https://taxr.ai to upload my S-Corp docs and got clarity in minutes. They analyzed my W-2, K-1, and corporate returns then explained exactly how much I could contribute. Turns out my CPA was calculating based on outdated rules! The analysis showed I could contribute way more than I thought - it's definitely based on W-2 wages as an S-Corp owner, but there are some nuances with how the percentages work that the tool explained perfectly.
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Liam Mendez
How does this actually work? Do you just upload tax documents or do you need to explain your situation first? My S-corp situation is a bit complicated because I have multiple income streams flowing through it.
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Sophia Nguyen
I'm skeptical about these online tools. How accurate can it really be compared to a professional? My CPA charges me a fortune but at least I know she's licensed and responsible if there's an audit.
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Emily Jackson
You just upload the relevant documents - in your case, you'd want to include your W-2, K-1, and business tax returns. The system analyzes everything and gives you personalized explanations. It works really well with multiple income streams because it can see how everything interconnects across your documents. As for accuracy, that's exactly why I started using it. My CPA and financial advisor were giving different answers, and I couldn't tell who was right. The tool references specific IRS publications and tax code sections in its explanations so you can verify everything. It's not replacing professional advice - it's helping you verify what you're being told is correct.
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Sophia Nguyen
I was skeptical too but gave taxr.ai a try with my complicated S-Corp situation. Complete game-changer! It showed me that my "expert" accountant had been miscalculating my maximum employer contribution for YEARS because he wasn't factoring in some specific S-Corp compensation rules. The analysis even showed the specific IRS reference codes. I was able to contribute an additional $12,000 this year AND amend my previous returns. My accountant was actually embarrassed when I showed him the detailed analysis. Best $30 I've ever spent on my business.
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Jacob Smithson
If you're getting contradictory information from your professionals, you should really call the IRS directly to get the definitive answer. I had a similar issue with my S-Corp retirement contributions and decided to go straight to the source. Spent weeks trying to get through their phone lines though - complete nightmare. Then I found https://claimyr.com which got me connected to a real IRS agent in under 45 minutes. You can see how it works here: https://youtu.be/_kiP6q8DX5c. The agent walked me through the exact calculation for S-Corp owners and confirmed it's 25% of W-2 wages only, not distributions or business profit. Totally worth it to get an official answer I could rely on.
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Isabella Brown
Wait, how does this actually work? They somehow get you to the front of the IRS phone queue? That seems too good to be true. I've literally waited 3+ hours multiple times.
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Sophia Nguyen
This sounds like a scam. The IRS doesn't let anyone "skip the line" - there's no special backdoor into their phone system. Even tax professionals have to wait. I'll stick with sacrificing my afternoon on hold like everyone else.
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Jacob Smithson
It's not a "skip the line" service - it's an automated system that does the waiting for you. You register your phone number, and their system continually calls the IRS using their algorithms to navigate the phone tree. When they finally get through to an agent, their system calls you and connects you directly. You don't have to sit there listening to hold music for hours. It doesn't give you any special access to the IRS - it just handles the tedious waiting process. I was skeptical too, but after trying to get through myself for weeks, I was desperate. They connected me within 45 minutes, and I got definitive answers about my S-Corp contribution limits directly from the IRS.
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Sophia Nguyen
I owe everyone an apology - especially to the person who recommended Claimyr. After my skeptical comment, I was still stuck with questions about my S-Corp contributions that my accountant couldn't answer clearly. I reluctantly tried the Claimyr service yesterday, and I'm completely shocked. It actually worked! Their system called me back in about 35 minutes and connected me directly to an IRS agent who specialized in business taxation. He confirmed exactly how the S-Corp employer contribution limits work AND helped me understand some specifics about how my part-time employees affect the calculation. I've been trying to get this information for months! Sometimes it pays to be wrong.
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Maya Patel
Just want to add a quick tip that helped me: get everything in writing from both your accountant and financial advisor, then ask them to specifically explain why their calculation is correct with IRS references. When I did this, my accountant immediately backtracked and said "Oh, for S-Corps it's different than what I was thinking." Forced them to actually research instead of giving off-the-cuff answers.
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Carmen Diaz
AuthorThat's brilliant! Did you have to pay extra for them to provide written documentation of their advice? My accountant charges for everything beyond basic tax prep.
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Maya Patel
I didn't pay extra, but I framed it as a requirement for my business records rather than as an optional service. I simply said, "For my compliance records, I need written confirmation of how this calculation should be done with the specific IRS references." Most professionals understand that documenting advice is part of their job, especially for business clients. If your accountant tries to charge for this, it might be time to find a new accountant. Clear documentation should be included in their standard services for business clients, especially for something as fundamental as retirement contribution calculations.
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Aiden Rodríguez
Just to complicate things even more - if you're using a Solo 401k plan, the total contribution calculation is slightly different than a regular 401k. For 2023, you can contribute up to $66,000 total between employee and employer contributions (or $73,500 if you're over 50). The employee part is straightforward ($22,500), but the employer contribution limit is actually 25% of compensation AFTER subtracting the employee contribution from your total compensation. Most accountants mess this up!
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Emma Garcia
I don't think that's right. The 25% employer contribution is based on your full W-2 compensation, not reduced by your employee contribution. The employee contribution reduces your taxable income but doesn't affect the employer contribution calculation.
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Ravi Malhotra
I went through this exact same confusion with my S-Corp last year! The key thing to remember is that as an S-Corp owner, you're essentially wearing two hats - you're both an employee (receiving W-2 wages) AND the employer. Your financial advisor is correct - the employer contribution is limited to 25% of your W-2 compensation ($105k), which equals $26,250. This is completely separate from any distributions you take from the company. The distributions don't count as "earned income" for retirement plan purposes. What might be confusing your accountant is that for other business structures (like sole proprietorships or partnerships), the calculation IS based on net earnings from self-employment. But since you've elected S-Corp status and are paying yourself a reasonable salary with proper payroll taxes, you follow the W-2 compensation rules. One thing to double-check: make sure your $105k salary meets the IRS "reasonable compensation" test for your industry and role. If the IRS ever audits and determines your salary should be higher, it could affect your contribution calculations retroactively.
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ShadowHunter
This is such a helpful breakdown! I'm new to the S-Corp world and was completely overwhelmed by all the different rules. The "two hats" analogy really clicked for me - employee vs employer roles make so much more sense now. Quick question about the reasonable compensation test you mentioned - is there a specific percentage or formula the IRS uses, or is it more subjective based on industry standards? I'm trying to make sure I'm not setting myself up for problems down the road.
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Evelyn Rivera
Great question about reasonable compensation! The IRS doesn't have a specific percentage formula, but they do look at several factors: what you'd pay someone else to do your job, compensation in similar businesses in your area, your company's profits, and how much time you spend working in the business. A common rule of thumb many CPAs use is that your salary should be at least 40-60% of your total S-Corp income (salary + distributions), but this varies significantly by industry. For a marketing agency owner like Carmen, $105k could be very reasonable depending on location and business size. The IRS tends to scrutinize cases where the salary is obviously too low compared to distributions - like paying yourself $20k salary but taking $200k in distributions. As long as you're in a reasonable range for your industry and role, you should be fine. You can research salary data on sites like BLS.gov or PayScale to benchmark your compensation.
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Noland Curtis
Great question! The IRS doesn't have a specific formula, but they do look at several factors to determine if compensation is reasonable. Generally, they compare your salary to what similar businesses would pay for comparable work in your geographic area and industry. Some key factors they consider: your qualifications, responsibilities, time devoted to the business, company profits, and what other companies pay for similar services. A common rule of thumb is that your salary should be at least 50-60% of your total S-Corp income (salary + distributions), but this varies by industry. For your marketing agency, you'd want to research what marketing agency owners/managers with similar experience make in your area. The Department of Labor's Bureau of Labor Statistics and salary websites like PayScale can give you benchmarks. If your business generates significantly more profit than your salary suggests, that could be a red flag. The good news is that as long as you're in a reasonable range and can justify your salary with market data, you should be fine. Just document your reasoning in case you ever need to explain it!
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Zoe Papadakis
Great question! The IRS doesn't have a specific percentage formula, but they do look at several factors to determine if your salary is "reasonable." They compare your compensation to what similar businesses pay for comparable work, considering your responsibilities, time invested, business size, and industry standards. A common rule of thumb many tax professionals use is that your salary should be at least 60-70% of what the business distributes to you total, but this isn't an official IRS guideline. The key is being able to justify that you'd pay someone else a similar amount to do your job if you hired them. I'd recommend documenting your decision-making process - save salary surveys for your industry/role, note the hours you work, and keep records of your responsibilities. This creates a paper trail if the IRS ever questions your compensation level. Your accountant should be able to help benchmark your salary against industry data to make sure you're in a defensible range.
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Morgan Washington
Great question! The IRS doesn't have a specific percentage formula for reasonable compensation - it's more subjective and based on several factors. They typically look at what you'd pay an unrelated person to do the same job in your geographic area and industry. Key factors the IRS considers include: your role and responsibilities, time devoted to the business, comparable salaries in your industry/location, the company's financial condition, and your qualifications/experience. For marketing agency owners, I've seen salaries ranging from $80k-150k+ depending on the business size and location. A good rule of thumb many tax professionals use is that your salary should be at least 40-60% of the business's net income, but this isn't a hard rule. The IRS gets suspicious when they see very low salaries combined with high distributions, especially if the business is profitable. Since you're at $105k with a successful agency, you're probably in good shape, but it's worth having your accountant document the reasoning behind your salary decision for your records.
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Yara Abboud
Great question! The IRS doesn't have a specific formula, but they do look at several factors to determine if your salary is "reasonable." They consider things like your qualifications, the time you spend working in the business, your responsibilities, the complexity of your role, and what similar positions pay in your geographic area and industry. A common rule of thumb that many tax professionals use is that your salary should be at least 60-70% of what you'd pay someone else to do your job, but this isn't an official IRS guideline. The key is being able to justify your salary if questioned. For a marketing agency owner like Carmen, $105k could be very reasonable depending on the size of the business, her role, and local market rates for marketing professionals. I'd recommend doing some research on salary websites like Glassdoor or PayScale to see what marketing directors/agency owners in your area typically earn - that documentation could be valuable if you ever need to defend your compensation level. The IRS tends to scrutinize S-Corps more when the salary seems unusually low compared to distributions, since that's a common way people try to avoid payroll taxes.
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Jason Brewer
Great question! The IRS doesn't have a specific percentage formula, but they do look at several factors to determine if compensation is "reasonable." They compare your salary to what similar businesses would pay for comparable work, considering your responsibilities, time invested, qualifications, and the company's revenue. A general rule of thumb many tax professionals use is that your salary should be at least 60-70% of what you'd pay an unrelated person to do your job, but this varies significantly by industry. For a marketing agency owner like Carmen, you'd want to look at what marketing directors or agency principals earn in your market. The IRS gets suspicious when S-Corp owners pay themselves very low salaries to minimize payroll taxes while taking large distributions. Since Carmen is paying herself $105k, that seems pretty reasonable for a successful 4-year marketing agency, but it's worth having your accountant document the rationale based on industry compensation data. You can find salary benchmarks through sites like PayScale, Glassdoor, or industry-specific surveys to support your compensation level if ever questioned.
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Charlie Yang
The reasonable compensation test is more subjective than formulaic, which can be frustrating! The IRS doesn't publish a specific percentage, but they look at several factors: what you'd pay someone else to do your job, industry standards for similar roles, your experience/qualifications, time devoted to the business, and the company's profitability. A good rule of thumb is to look at salary surveys for your role in your geographic area. For a marketing agency owner, $105k could be reasonable depending on your location, agency size, and responsibilities. Some tax pros suggest aiming for 60-70% of net business income as salary, but that's not a hard rule. The key is being able to justify your salary if questioned. Keep documentation like industry salary surveys, job descriptions of similar roles, and records of your time commitment. Most S-Corp audits focus on cases where the salary seems obviously low compared to distributions - like paying yourself $30k while taking $200k in distributions. @1acc35497938 might have more specific insights on this since they mentioned going through the process!
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Victoria Brown
Great question! The IRS doesn't have a specific percentage formula, but they do look at several factors to determine if your salary is reasonable. Generally, they compare your compensation to what similar businesses would pay for the same services in your geographic area and industry. For marketing agencies, they typically look at factors like: years of experience, education, hours worked, responsibilities, company profitability, and what comparable marketing professionals earn in your market. A good rule of thumb is to pay yourself at least 60-70% of what you'd pay an employee to do your same job, but this varies significantly by industry. The IRS tends to scrutinize S-Corps more when there's a big disparity between salary and distributions. If you're taking $105k in salary but $300k in distributions, that might raise flags. However, if your salary is reasonable for your role and market, you should be fine. You might want to document your reasoning for the salary amount - maybe get some salary surveys for marketing agency owners in your area or comparable job postings. Having that documentation can be helpful if questions ever arise.
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Aisha Mohammed
@ShadowHunter Great question! The IRS doesn't have a specific formula, but they generally look at what you'd pay someone else to do your job in your geographic area. A good rule of thumb is to research similar positions on sites like PayScale or Glassdoor for your industry and location. The IRS considers factors like: - Your responsibilities and time spent - Training and experience required - Comparable salaries for similar work - Company profits (you can't pay yourself $200k if the company only makes $50k profit) Most tax professionals recommend staying within the 60-70% range of what the business nets, but honestly, it's more art than science. If you're ever uncertain, document your research showing how you arrived at your salary amount - that goes a long way in an audit situation.
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Sienna Gomez
The reasonable compensation test is more subjective than you'd hope! The IRS doesn't provide a specific percentage or formula, but they look at several factors: what similar businesses pay for comparable work, your qualifications and experience, the time you devote to the business, and industry standards. A common rule of thumb many tax professionals use is that your salary should be at least 40-60% of your total S-Corp income (salary + distributions combined), but this isn't an official IRS guideline. What matters more is that you can justify the salary based on what you'd pay someone else to do your job. For your marketing agency, you'd want to research what marketing agency owners or marketing directors with similar experience make in your area. The Department of Labor's Bureau of Labor Statistics and sites like PayScale or Glassdoor can help establish benchmarks. Document your research - if you ever get audited, showing that you did your homework goes a long way with the IRS.
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Landon Flounder
Great question! The IRS doesn't have a specific formula, but they do look at several factors to determine if compensation is "reasonable." Generally, they compare your salary to what similar businesses would pay for comparable work in your geographic area and industry. Some key factors they consider: your role and responsibilities, time devoted to the business, your qualifications and experience, the company's financial condition, and what you'd pay an unrelated person to do the same job. A common rule of thumb many tax professionals use is that S-Corp owner salaries should be at least 60-70% of what the business distributes to the owner, but this isn't an official IRS rule. For a marketing agency owner with your revenue level, $105k could very well be reasonable depending on your market. If you're ever unsure, you can research salary data on sites like Glassdoor or Bureau of Labor Statistics for marketing agency owners/executives in your area. Documenting this research shows good faith effort to comply with reasonable compensation requirements.
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Mateo Rodriguez
Great question! The IRS doesn't have a specific formula, but they do look at several factors to determine if your salary is "reasonable." They compare your compensation to what similar businesses would pay for comparable services in your geographic area and industry. Some key factors they consider: - Your role and responsibilities in the business - Time devoted to the business - Payments to non-shareholder employees for similar services - Your qualifications and experience - Industry compensation surveys and data A common rule of thumb is that your W-2 salary should be at least 60-70% of what you'd pay an outsider to do your job, but this varies significantly by industry. For a marketing agency owner like Carmen, you'd want to research what marketing directors or agency principals earn in your area. The good news is that as long as you can demonstrate you used reasonable methods to determine your salary (like industry salary surveys or comparable job postings), the IRS typically won't challenge it unless it's obviously too low relative to your business profits and role.
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Nia Harris
@Ravi Malhotra The reasonable compensation test doesn't have a specific formula, but the IRS looks at several factors: what you'd pay someone else to do your job, industry standards for similar roles, your experience/qualifications, time devoted to the business, and the company's profitability. A good rule of thumb is to research salary surveys for marketing agency owners or similar roles in your area. Sites like Glassdoor, Salary.com, or industry reports can help establish benchmarks. Some tax professionals suggest aiming for at least 60-70% of what the business nets, but that's very situation-dependent. The key is being able to justify your salary with documentation if questioned. Keep records of comparable salaries, your qualifications, hours worked, and responsibilities. As long as you're in a reasonable range and can support it, you should be fine. Better to err slightly on the higher side for salary since it also increases your 401k contribution capacity!
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Yara Sayegh
Great question! The IRS doesn't have a specific percentage formula, but they do look at several factors to determine if your salary is "reasonable." They compare your compensation to what similar businesses would pay for comparable services in your geographic area and industry. Some key factors they consider: - Your training, experience, and responsibilities - Time devoted to the business - Payments to non-shareholder employees for similar services - Compensation agreements and what comparable businesses pay - The company's financial condition and ability to pay A good rule of thumb is to research what you'd pay someone else to do your job, or what you could earn doing similar work for another company. Many S-Corp owners aim for somewhere between 40-60% of their total business income as salary, but it really depends on your specific situation. The IRS tends to scrutinize cases where the salary seems unusually low compared to distributions taken, since that's a common way people try to avoid payroll taxes. As long as you're being reasonable and can justify your salary based on market rates, you should be fine.
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