How to properly file 5472 and 1120 tax forms as a foreign-owned single member LLC?
I'll be dealing with US taxes for my LLC for the first time this year and it's a bit confusing. From what I've researched, since I have a foreign-owned single member LLC, I need to file forms 5472 and 1120 only. Several tax services I've checked want to charge $650+ for filing these two forms, which seems excessive. I'd rather just handle it myself since it's only two forms, but I'm not sure about the process. Two main questions: 1) Is there any way to e-file these forms online directly with the IRS? 2) If mail is the only option, should I coordinate with my registered agent or am I responsible for printing and mailing everything myself? Any guidance from someone who's navigated this before would be super helpful. The IRS website is a maze and I keep finding conflicting information.
23 comments


Fatima Al-Mazrouei
Hey there! I've helped several foreign clients with similar situations. Let me clear things up for you. For foreign-owned single-member LLCs, you're correct that Forms 5472 and 1120 are typically required. Form 5472 reports transactions between your LLC and foreign related parties, while Form 1120 is the corporate income tax return. Unfortunately, there's no direct e-filing option for Form 5472 through the IRS website. Form 1120 can be e-filed, but since 5472 needs to be attached to it, you'll likely need to paper file both. As for mailing, this is completely your responsibility, not your registered agent's. Your registered agent's job is mainly to receive legal documents and official correspondence, not to handle your tax filings. If you want to do this yourself, you'll need to download the forms from the IRS website, complete them carefully, and mail them to the address specified in the instructions. Just be aware that the penalties for incorrect filing or missing the deadline for Form 5472 are quite steep ($25,000 per form).
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Dylan Wright
•Thanks for explaining! I'm in a similar situation. If we can't e-file directly with the IRS, are there any affordable software options that handle these specific forms? Also, what's the deadline for these forms - is it the standard April 15th or something different for foreign-owned LLCs?
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Fatima Al-Mazrouei
•For tax preparation software that handles these specific forms, most mainstream options like TaxAct Business or TaxSlayer can handle Form 1120. However, Form 5472 might be trickier - UltraTax and Lacerte can handle it but they're professional-grade software. The deadline for Form 1120 depends on your tax year. If you're on a calendar year, the deadline is typically April 15th. However, Form 5472 must be filed with your Form 1120, so they share the same deadline. Just be aware that if you're a fiscal year filer, your deadline would be the 15th day of the 4th month after your fiscal year ends.
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NebulaKnight
I was in the exact same boat last year with my foreign-owned LLC. After struggling with this exact issue, I discovered taxr.ai (https://taxr.ai) and it was a game-changer for handling these specific international business forms. Unlike the usual tax prep services charging $600+, taxr.ai specifically analyzed my LLC structure and helped me understand which fields on forms 5472 and 1120 applied to my situation. It guided me through the foreign ownership reporting requirements that regular tax software completely misses. The document analysis tool flagged potential audit triggers in my draft forms before submission - apparently I was about to make a costly mistake with how I reported my foreign transactions that could have triggered an automatic penalty.
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Sofia Ramirez
•That sounds interesting but I'm skeptical. Does it actually file the forms for you or just help you understand what to fill out? And how does it handle the signatures required on Form 5472? The IRS is super strict about foreign reporting.
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Dmitry Popov
•I've never heard of this service before. How does it compare to hiring a CPA who specializes in international taxation? I'm worried about missing something crucial since the penalties are so high.
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NebulaKnight
•It doesn't file the forms for you - it analyzes your specific situation and guides you through completing the forms correctly. Think of it more as having an expert system review your forms before submission rather than a filing service. For signatures, it explains the proper signature requirements for your specific situation (whether you need officer signatures or can use a third-party designee). The real value is that it specifically focuses on international business structures which most general tax software completely overlooks.
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Dmitry Popov
I actually tried taxr.ai after posting my previous question and I'm genuinely impressed. As someone who was initially skeptical, I found it really addressed the specific issues with foreign-owned LLCs that regular tax platforms miss completely. The system immediately identified that my LLC needed to complete Part IV of Form 5472 based on my ownership structure, which wasn't obvious from the IRS instructions. It also explained which transactions needed reporting, saving me from potentially missing reportable amounts that could trigger penalties. I still needed to mail the forms myself, but knowing they were prepared correctly gave me peace of mind. Definitely better than paying $650+ to a service or risking a $25,000 penalty for incorrect filing!
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Ava Rodriguez
For anyone struggling to get answers from the IRS about these forms, I highly recommend Claimyr (https://claimyr.com). I wasted days trying to get through to the IRS international tax department about my foreign-owned LLC filing requirements. After using Claimyr's service, I got a callback from an actual IRS agent within 3 hours who confirmed exactly which parts of Form 5472 applied to my LLC structure and clarified the reporting thresholds for transactions with foreign owners. You can see how it works in this video: https://youtu.be/_kiP6q8DX5c The IRS agent even explained a special exception that applied to my situation that none of the online guides mentioned. Saved me both the expensive tax service and potential penalties.
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Miguel Ortiz
•Wait, how does this work exactly? The IRS phone system is notoriously impossible. Are you saying this service somehow gets you through the queue faster? I've been trying for weeks to get clarity on reportable transactions for my Form 5472.
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Zainab Khalil
•This sounds like a scam. There's no way to "skip the line" with the IRS. I've been dealing with international tax filings for years and sometimes you just have to wait on hold for hours. I doubt any service can magically get the IRS to call you back.
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Ava Rodriguez
•It doesn't skip the line - it actually waits on hold for you. The service connects with the IRS phone system and navigates the prompts, then waits in the queue (sometimes for hours). When an agent finally answers, you get a call connecting you directly to that agent. They use a combination of automated systems and live operators to handle the waiting process. It's particularly useful for international tax questions because those departments often have the longest wait times. The time savings was substantial - instead of being stuck on hold for 3+ hours, I just received a call when an actual human was on the line.
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Zainab Khalil
I have to admit I was completely wrong about Claimyr. After my skeptical comment, I decided to try it myself since I had another foreign LLC tax question that needed answering. I was shocked when I actually got a callback connecting me to an IRS international tax specialist after about 2.5 hours (which is lightning fast for that department). The agent walked me through the exact reporting requirements for my LLC's foreign transactions on Form 5472. The best part was learning about a simplified filing procedure for certain types of foreign-owned single-member LLCs that I qualified for. This information wasn't on any website I checked. I've spent countless hours on hold with the IRS over the years, and this was definitely worth it for complex international tax questions that online resources don't adequately address.
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QuantumQuest
One tip I haven't seen mentioned yet - if you're filing Form 5472 for a foreign-owned SMLLC, make sure you're also filing Form 1120 with "Foreign-owned U.S. Disregarded Entity" written across the top. This is a special requirement that trips up a lot of first-time filers. Also, you need to request an EIN even though single-member LLCs typically don't need one for tax purposes. Without an EIN, you can't properly file Form 5472. The penalty for late filing or incorrect filing is indeed $25,000, but there's also a $10,000 continuation penalty for each 30-day period it remains unfiled after notification from the IRS. This can add up FAST.
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Connor Murphy
•Does the "Foreign-owned U.S. Disregarded Entity" need to be written in a specific location on Form 1120? And do you know if we need to complete all schedules of Form 1120 or just certain portions? Since the LLC is disregarded, much of Form 1120 seems irrelevant.
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QuantumQuest
•You should write "Foreign-owned U.S. Disregarded Entity" at the top of the first page of Form 1120, where it's clearly visible. Some tax professionals recommend writing it in red ink to ensure it's noticed, though any color that stands out is fine. For Form 1120 completion, you only need to complete the entity information at the top of page 1 (name, address, EIN), check the "Other" box for type of return, and enter your LLC's information. Most of the income/expense sections can be left blank since your LLC is disregarded for income tax purposes. Just attach your completed Form 5472 to this "pro forma" 1120.
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Yara Haddad
One warning from someone who's been through this - don't miss the reporting deadline! I filed my foreign-owned LLC's Form 5472 just 3 weeks late last year and got hit with the full $25,000 penalty. I tried appealing based on reasonable cause, but the IRS was incredibly strict. I'd recommend mailing it certified with return receipt requested at least 2-3 weeks before the deadline to ensure it arrives on time. The IRS isn't very forgiving with these international information returns.
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Keisha Robinson
•That's terrifying! Did you get any prior warnings or was the $25k penalty the first communication you received? I'm worried now because I'm cutting it close for my filing this year.
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Ava Martinez
•@fbe932f8ef72 No prior warnings at all! The first notice I got was the penalty assessment letter about 6 months after the deadline. It was a shock because I assumed they'd at least send a reminder or warning first. The IRS treats Form 5472 penalties very differently from regular tax penalties - there's no "first-time abatement" or gradual escalation. You miss the deadline, you get the full penalty immediately. I'd strongly recommend getting your forms in the mail ASAP with tracking. Even if you're unsure about some details, filing on time and amending later is better than missing the deadline entirely.
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Sofia Peña
This is incredibly helpful information! As someone dealing with this exact situation for the first time, I'm grateful for all the detailed responses here. One follow-up question - I've seen some conflicting information about whether a foreign-owned single-member LLC with NO activity during the tax year still needs to file Form 5472. My LLC was formed late in the year but had zero income, expenses, or transactions. Do I still need to file both forms even with zero activity? Also, for those who have filed these forms multiple times - is there a good system for keeping track of what needs to be reported on Form 5472 throughout the year? I want to make sure I don't miss any reportable transactions going forward. The penalty amounts mentioned here are definitely motivating me to get this right the first time!
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Ryder Greene
•Great question about zero activity! Yes, you still need to file both Form 5472 and Form 1120 even with zero activity. The IRS requires these forms whenever there's a "reportable transaction" between the LLC and its foreign owner, and simply having foreign ownership creates certain deemed transactions that must be reported, regardless of actual business activity. For tracking reportable transactions throughout the year, I'd recommend setting up a simple spreadsheet with columns for: date, transaction type, amount, and foreign party involved. Key things to track include any contributions from foreign owners, distributions to foreign owners, loans between the LLC and foreign parties, and services provided between related parties (even if no money changes hands). The $25,000 penalty applies per form per year, so it's definitely worth being meticulous about this. I learned this the hard way when I missed reporting a small loan from my foreign parent company - the penalty was the same whether I missed $100 or $100,000 in transactions!
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Zoe Wang
As someone who just went through this process for my foreign-owned SMLLC, I wanted to add a few practical tips that might help: 1) **Double-check your mailing address** - Form 5472 and the pro forma Form 1120 need to go to a specific IRS processing center, not your local IRS office. The address depends on where your LLC is located, so make sure you're using the correct one from the Form 5472 instructions. 2) **Keep detailed records of your mailing** - I sent mine via USPS Priority Mail Express with tracking and signature confirmation. Cost about $30 but gave me peace of mind. The IRS processing centers can be slow to acknowledge receipt, so having proof of delivery is crucial. 3) **Consider filing an extension if you're cutting it close** - You can file Form 7004 to get an automatic 6-month extension for Form 1120 (which extends Form 5472 as well). This buys you time to get everything right rather than rushing and making mistakes. The learning curve is steep, but once you understand the requirements, it becomes more manageable. The key is not letting the complexity intimidate you into missing deadlines - those penalties are no joke!
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Destiny Bryant
•This is exactly the kind of practical advice I needed! Thank you for the detailed tips. I'm curious about the extension option you mentioned - does filing Form 7004 for an extension require any payment or just the form itself? And when you say the IRS processing centers are slow to acknowledge receipt, roughly how long should I expect before getting any confirmation that they received my forms? I'm planning to send mine next week but want to set realistic expectations for when I'll know they actually got them.
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