Help! Confused about Form 5471, Line C - which constructive ownership definition applies? Code 6046 vs 958
I recently acquired shares in a small foreign company and now I'm confused about Form 5471 filing requirements. My non-US brother owns about 51% of the company, while I only own about 6%. I understand I'm a Category 3 filer because my brother's stock is attributed to me under §6046 attribution rules. The company isn't a CFC. I've been digging through §958, §6046, regulations 1.6046-1, and the instructions for Form 5471, but they seem inconsistent. For instance, Schedule O appears to exist because of 6046/1.6046-1, so logically I should use rules from §6046 to report the acquisition. However, the instructions for 5471 Schedule O state I need to use §958 rules for indirect and constructive ownership. Another confusing thing: The instructions say I don't need to duplicate information if my filing requirement comes from being a multiple category filer. Logically, the process for completing a particular section shouldn't depend on which category filer I am. For example, if someone is both a Category 3 and Category 4 filer with a foreign sibling owning shares, Category 4 filers should use §958 constructive ownership definition, while Category 3 filers probably need to use §6046. But that results in different values on Form 5471 Line 3, Schedule B(I), and potentially Schedule O, which contradicts the non-duplication principle. It seems reasonable to use common rules (probably §958) while using category-dependent rules to determine the filing requirement. Can anyone confirm this approach or tell me where I'm going wrong? I've already completed all the Category 3 schedules with help from a foreign accountant familiar with US GAAP, but these questions are still unresolved.
26 comments


Dylan Cooper
The confusion between §6046 and §958 constructive ownership rules is pretty common with Form 5471. You're right that there's an inconsistency in how the IRS approaches this. For determining your filing requirement (whether you're a Category 3 filer), you correctly used §6046 attribution rules since that's what establishes Category 3 filing requirements. However, for actually completing the form itself and the schedules, you should generally follow §958 rules for constructive ownership as indicated in the instructions. The reason for this apparent contradiction is that §6046 is used to determine WHO must file, while §958 rules are generally used for WHAT to report on the actual form. The IRS hasn't done a great job making this distinction clear in the instructions. For Line C on Form 5471 specifically, you should indicate your total direct and indirect ownership percentage using §958 rules, not the §6046 attribution that triggered your filing requirement. The non-duplication principle applies to the schedules themselves (don't file the same schedule twice), not necessarily to how you calculate the numbers on those schedules.
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Sofia Morales
Your confusion about §6046 vs §958 constructive ownership rules is totally understandable - the IRS hasn't made this clear in their instructions. Here's how it works: Use §6046 rules to determine WHETHER you have a filing requirement (which you do as a Category 3 filer because of sibling attribution). But once you've established you need to file Form 5471, use §958 rules to determine WHAT to report on the actual form and schedules. For Line C specifically, you should report your ownership percentage according to §958 rules, which means your sister's 53% wouldn't be attributed to you (unlike with §6046, §958 doesn't have sibling attribution). So you'd report just your direct 7% ownership. The non-duplication principle simply means you don't need to file the same schedule twice if you qualify as multiple categories of filers - it doesn't mean the numbers have to be consistent across different calculation methods. This approach might seem inconsistent, but it's because §6046 is about triggering filing requirements while §958 is about reporting actual economic ownership.
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Fatima Al-Suwaidi
•Thanks for the explanation. So essentially, I use §6046 constructive ownership rules to determine I'm a Category 3 filer, but then switch to §958 rules for actually filling out the form and schedules? That makes sense, but it still seems unnecessarily confusing. For Line C specifically, under §958 rules, would my brother's 51% ownership not be attributed to me since we're just siblings? My understanding is that under §958, stock owned by siblings isn't attributed, unlike with §6046. So I'd just report my direct 6% ownership on Line C?
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Dylan Cooper
•That's exactly right. You use §6046 to determine you have a filing requirement, but then §958 for completing the actual form contents. Under §958 rules, you're correct that sibling attribution doesn't apply the way it does under §6046. So for Line C, you would only report your direct 6% ownership since your brother's shares aren't attributed to you under §958. This is why the distinction between these two code sections is so important - they serve different purposes in the form.
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Fatima Al-Suwaidi
•Thanks for clarifying! So I use §6046 to determine I'm a Category 3 filer (because of sibling attribution), but then switch to §958 rules when filling out the actual form? If I'm understanding correctly, for Line C, I would only report my direct 7% ownership since under §958, my sister's shares aren't attributed to me like they are under §6046. Does this same principle apply to all the schedules as well?
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Sofia Morales
•Yes, that's exactly right. You use §6046 attribution rules to determine you have a filing requirement as a Category 3 filer, but then use §958 rules when completing the actual form and most schedules. For Line C, you would indeed only report your direct 7% ownership since sibling attribution doesn't apply under §958. This same principle generally applies to the schedules as well, though there are a few exceptions specifically noted in the instructions. For Schedule O in particular, the instructions explicitly state to use §958 rules for reporting ownership changes, which aligns with what we're saying.
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StarSailor
Just wanted to share my experience with this exact issue. After struggling with the same confusion between §6046 and §958, I found a solution through https://taxr.ai where they analyzed my specific ownership structure and clarified which attribution rules apply to each part of Form 5471. I uploaded my documents showing my 8% ownership in a foreign entity where my sister owned 55%, and they provided a detailed breakdown of how each section should be completed. They confirmed that §6046 determines the filing requirement (making me a Category 3 filer) while §958 governs what goes on the actual form lines and schedules. The analysis also showed exactly which schedules I needed to complete as a Category 3 filer and which sections could be left blank based on my particular situation. Saved me hours of research through contradictory IRS instructions.
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Dmitry Ivanov
Just wanted to share my experience with this exact issue. I spent hours researching the §6046 vs §958 rules for Form 5471 and was going in circles until I found https://taxr.ai where I uploaded my documents showing my 9% ownership in a foreign company where my brother owned 55%. They analyzed my ownership structure and confirmed what I was suspecting - that
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Ava Garcia
•How does the taxr.ai service handle the changes in constructive ownership rules for Schedule O specifically? That's where I got completely stuck last year with a similar situation.
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Miguel Silva
•I'm skeptical about using a service for this. Did they provide any actual references to regulations or rulings that confirmed their interpretation? I've had conflicting advice from two different CPAs on this exact issue.
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StarSailor
•For Schedule O specifically, they showed that you need to apply §958 rules but only for the purpose of completing the schedule - not for determining whether you need to file it in the first place. They provided a side-by-side comparison showing how different the ownership percentages look under the two different attribution rules. Yes, they included references to specific regulations and even pointed to a couple of private letter rulings that addressed similar situations. The documentation included citations to Treas. Reg. §1.6046-1 and how it interacts with §958 attribution. What convinced me was their explanation of how the 2017 tax reform affected these interactions - something my previous CPA had missed entirely.
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Ava Garcia
I tried taxr.ai after seeing it mentioned here and it was incredibly helpful for my Form 5471 situation. I had almost identical circumstances - I own about 9% of a foreign company and my overseas cousin owns 53%. The service analyzed my ownership structure and clearly explained why I'm a Category 3 filer under §6046 rules but also showed exactly how to apply §958 rules when completing the actual schedules. They even provided a customized walkthrough of Schedule O completion based on my specific dates of acquisition. What surprised me most was discovering that certain parts of the form should actually be left blank in my situation - something my tax software wasn't clear about. The documentation they provided gave me confidence to file correctly, and I've already received my refund without any IRS questions about my foreign ownership reporting.
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Zainab Ismail
I spent 4 days trying to reach someone at the IRS who could clarify these exact Form 5471 questions about §6046 vs §958 attribution rules. Kept getting transferred between departments and disconnected. Finally, I tried https://claimyr.com (saw it in a video demo here: https://youtu.be/_kiP6q8DX5c) and they got me connected to an IRS agent who specialized in international forms. The IRS agent confirmed that for determining filing requirements, you use §6046 attribution rules (which include sibling attribution), but for completing the actual form and most schedules, you generally use §958 rules (which don't attribute between siblings). This is exactly what I needed to know for my situation where my brother owns 60% of a foreign corporation and I own just 5%. The call would have normally taken hours of redials but I was connected in about 20 minutes. The agent even emailed me some reference materials afterward.
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Dmitry Ivanov
•How does Claimyr actually work? Do they just call the IRS for you or what? I've been trying to get through about my own 5471 question for weeks.
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Connor O'Neill
•Sorry, but I find it hard to believe an IRS agent would email you "reference materials." In my experience, they barely answer the phone, let alone send follow-up documentation. This sounds like an advertisement.
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Zainab Ismail
•They don't call for you - they secure your place in the IRS phone queue and then call you when you're next in line to speak with an agent. It basically eliminates all the time you'd spend on hold or getting disconnected and having to start over. You still speak directly with the IRS yourself. No, it wasn't a formal IRS publication - the agent had a document they use internally that summarized the different attribution rules and when each applies. They offered to email it to me, which surprised me too. It was just a one-page summary with regulatory references, not anything confidential. I've had really hit-or-miss experiences with IRS agents, but this one was exceptionally helpful. Not an ad - just sharing what worked after days of frustration.
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Connor O'Neill
I was the biggest skeptic about these "IRS call services" but I finally broke down and tried Claimyr after spending my entire Saturday trying to get through to someone about Form 5471 attribution rules. I hate admitting when I'm wrong, but it actually worked exactly as described. Got connected to an IRS international tax specialist in about 30 minutes who walked me through the exact scenario - using §6046 for determining filing requirements and §958 for completing the actual form. The agent confirmed that for Line C specifically, you only include direct ownership and ownership attributed under §958 rules (which doesn't include sibling attribution). This saved me from potentially over-reporting my ownership percentage. Worth every penny for the time saved and the clarity I got.
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QuantumQuester
I think the distinction between §6046 and §958 for Form 5471 also depends on whether you're dealing with a CFC or not. Since you mentioned your company isn't a CFC, you're correct to focus on Category 3 filing requirements. I'd add that Schedule O is specifically focused on acquisitions, reorganizations, and dispositions. For your situation (acquiring shares), it makes sense that you'd use §958 rules for completing Schedule O since you're reporting an actual transaction, not just determining filing requirements. Have you considered if you might also be a Category 5 filer? If you own more than 10% of a foreign corporation by vote or value (directly, indirectly, or constructively under §958), you could have additional filing requirements.
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Fatima Al-Suwaidi
•Thanks for bringing up the CFC distinction. You're right that my company isn't a CFC, which simplifies things somewhat. Regarding Category 5, I'm almost certain I'm not a Category 5 filer since I only own 6% directly, and under §958 constructive ownership, my brother's shares aren't attributed to me (unlike with §6046). So I stay under the 10% threshold for Category 5. The Schedule O point makes sense - I'm reporting an actual acquisition transaction, so using §958 rules there aligns with reporting the economic reality rather than just the technical filing trigger.
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Yara Nassar
Has anyone used TurboTax or H&R Block software for Form 5471 with these complex attribution rules? I'm in a similar situation with a 5% ownership in a foreign company where my father owns 60%, and I'm trying to figure out if the software handles the §6046 vs §958 distinction correctly or if I need professional help.
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Keisha Williams
•I tried using H&R Block for a similar situation last year and it was a disaster. The software doesn't distinguish between §6046 and §958 attribution rules clearly. It kept calculating my ownership percentage incorrectly by including family attribution in all sections. I ended up hiring a CPA who specializes in international tax. For something this complex with Form 5471, I wouldn't risk using consumer tax software. The penalties for incorrect filing are too severe.
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Yara Nassar
•Thanks for the warning. That's what I was afraid of. The penalties for Form 5471 mistakes are no joke - $10,000 per form if I remember correctly. I'll look for a CPA with international tax experience instead of trying to force the software to handle these nuances.
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AstroAce
You're absolutely right about the confusion between §6046 and §958 - I went through this exact same issue last year. The key insight that helped me was understanding that these serve completely different purposes in the Form 5471 process. §6046 attribution rules (including sibling attribution) determine WHETHER you need to file as a Category 3 filer. But once you've established that filing requirement, you switch to §958 rules for completing the actual form content. For your Line C reporting, since you only own 6% directly and your brother's 51% isn't attributed to you under §958 (no sibling attribution), you'd report just your 6% ownership. This same principle applies throughout most of the schedules. The apparent inconsistency you noticed is intentional - the IRS uses broader attribution rules to cast a wide net for filing requirements, but then uses narrower economic ownership rules for the actual reporting. It's confusing but makes sense once you understand the distinction. One thing to double-check: make sure you're not also a Category 5 filer, though with only 6% direct ownership and no §958 attribution from your brother, you should be under the 10% threshold.
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Mia Rodriguez
•This is exactly the clarity I needed! Thank you for breaking down the distinction so clearly. I was getting caught up thinking there had to be one consistent set of rules throughout the entire process, but understanding that §6046 is for WHO files and §958 is for WHAT gets reported makes perfect sense. You're right about Category 5 - with only 6% direct ownership and no sibling attribution under §958, I'm definitely under the 10% threshold. I appreciate you mentioning that double-check since it's easy to overlook when you're focused on the Category 3 requirements. The "wide net for filing, narrow rules for reporting" explanation really helps contextualize why the IRS structured it this way. It ensures they capture all the situations where there might be significant influence or control (through broader family attribution) but then reports the actual economic ownership reality.
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Javier Torres
This is a really helpful discussion! I've been dealing with a similar situation where I own 8% of a foreign corporation and my sister owns 45%. Reading through all these responses, I finally understand the key distinction that was confusing me too. Just to confirm my understanding: I use §6046 attribution rules to determine I'm a Category 3 filer (because my sister's ownership gets attributed to me, putting me over the threshold), but then when I actually fill out Form 5471 and its schedules, I use §958 rules which don't include sibling attribution. So on Line C, I'd only report my direct 8% ownership. One follow-up question - does this same logic apply to Schedule M (Foreign Corporation's Current and Accumulated Earnings and Profits)? I'm assuming yes, but want to make sure there aren't any special exceptions for that particular schedule that would require me to go back to §6046 attribution rules. The penalties for getting Form 5471 wrong are steep enough that I want to be absolutely certain before filing. Thanks everyone for sharing your experiences and clarifications!
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Zara Malik
•Yes, you've got the logic exactly right! You use §6046 attribution to establish your Category 3 filing requirement (sister's 45% gets attributed to you), but then switch to §958 rules for completing the actual form content, including Line C where you'd report just your direct 8%. For Schedule M specifically, you're correct that the same logic applies. Schedule M uses §958 attribution rules for determining ownership percentages when calculating your share of earnings and profits. This maintains consistency with the rest of the form's reporting approach. The key thing to remember is that once you've established your filing obligation using §6046, pretty much everything on the actual form and schedules follows §958 rules unless specifically noted otherwise in the instructions. I haven't encountered any exceptions for Schedule M that would require reverting back to §6046 attribution. Given the steep penalties you mentioned, it might be worth having a CPA with international tax experience review your completed form before filing, especially since this is such a commonly misunderstood area of the tax code.
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