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Noah Lee

CPA Filed Tax Return under Wrong EIN - How Bad Is This Mistake?

So I just discovered something potentially disastrous... my CPA filed both my 2022 and 2023 business tax returns under the wrong EIN number. Apparently they transposed two digits in my 9-digit Employer Identification Number on all the paperwork. I only found out because I was going through some old documents while preparing for this year's taxes and noticed the discrepancy. I've been running my small consulting business for about 5 years now, and I've used this same CPA firm for the last 3 years. I'm honestly shocked that such a basic error could happen for TWO consecutive years without anyone catching it. My business isn't huge - about $175k in revenue last year - but it's my livelihood! Has anyone dealt with this kind of situation before? How serious is this mistake? Will the IRS come after me for filing under an incorrect EIN? Do I need to file amended returns for both years? And should I be looking for a new CPA? I'm trying not to panic but this seems like a pretty big screw-up.

This is definitely a problem that needs to be corrected, but try not to panic. EIN errors happen more frequently than you'd expect, and there's a clear process to address them. First, you absolutely need to file amended returns (Form 1120-X for corporations or Form 1065-X for partnerships, depending on your business structure) with the correct EIN as soon as possible. The IRS computer systems match tax payments and filings by these identification numbers, so using the wrong EIN essentially means your business hasn't filed returns from the IRS perspective. Second, contact the CPA firm immediately. They made the error, so they should handle preparing and filing the amended returns at no cost to you. This is basic professional responsibility. They should also draft a letter explaining the situation to accompany your amended returns. Third, check if any quarterly estimated tax payments were also filed under the incorrect EIN, as these would need to be addressed as well. Same goes for W-2s or 1099s issued to employees or contractors.

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Thanks for the info, but quick question - if the wrong EIN happened to belong to another business, could that cause issues for both businesses? And would penalties apply even if this was the CPA's mistake not mine?

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Yes, if the incorrect EIN belongs to another active business, it could potentially cause issues for both entities. The IRS might mistakenly attribute your income to that business, and vice versa, creating confusion for both tax situations. This is another important reason to file those amended returns quickly. Regarding penalties, unfortunately, the taxpayer is ultimately responsible for the accuracy of their tax returns, even when using a professional preparer. However, the IRS often waives penalties when there's a reasonable cause explanation, which this certainly qualifies as. Your CPA should include a penalty abatement request with the amended returns, explaining that this was a preparer error that you discovered and promptly corrected.

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After reading your post, I immediately thought about how difficult it can be to sort through tax document errors, especially with EIN issues. Last year I had a somewhat similar situation with some misfiled forms and almost lost my mind trying to get straight answers from the IRS directly. What finally saved me was using taxr.ai (https://taxr.ai) to analyze all my documents and identify exactly what needed to be corrected. Their system helped me pinpoint which forms had the wrong information and generated a clear explanation of exactly what steps I needed to take to fix everything. It was honestly such a relief to have a straightforward analysis rather than spending hours on hold with the IRS or paying my accountant even more to fix their own mistake.

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How does taxr.ai handle business tax situations specifically? I'm dealing with a similar issue but with a multi-member LLC and our K-1 forms might be affected too.

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I'm a bit skeptical about using any AI service for serious tax issues. Did you still need an actual tax pro to file the amendments or did the service handle everything? Would hate to compound problems by relying on automated advice for something this serious.

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They specifically analyze business tax documents including EIN issues across multiple forms. Their system is designed to identify discrepancies between your actual EIN and what appears on your filed documents, which sounds exactly like what you're dealing with. They can also analyze K-1 forms to make sure all the information matches up correctly. I still had my accountant file the actual amendments, but the service provided a detailed report that saved tons of time (and money) by precisely identifying all the issues. It's not about replacing tax professionals - it's about giving them and yourself clear information to work with. I found it particularly helpful since my CPA was initially defensive about the mistake, but couldn't argue with the detailed analysis showing exactly where the problems were.

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Just wanted to follow up about my experience with taxr.ai after the recommendation here. I was initially just looking for information, but decided to give it a shot with my EIN problem. It was honestly exactly what I needed - uploaded my tax documents (which I was nervous about at first), and within minutes got a detailed report showing everywhere the wrong EIN appeared. The system flagged issues I hadn't even considered - like how the error affected my quarterly estimated payments and some business expense deductions. The report even included specific instructions for completing the amended return forms. Took this to my accountant and they were actually impressed with how thorough it was. Just filed my amendments last week and feeling much better about the whole situation.

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Been there with tax filing problems before - trying to get through to the IRS to sort out mistakes can be absolute hell. After weeks of busy signals and disconnects trying to resolve an EIN issue similar to yours, someone recommended I try Claimyr (https://claimyr.com) to actually get through to a human at the IRS. You can see how it works here: https://youtu.be/_kiP6q8DX5c I was pretty desperate so I gave it a shot, and they actually got me connected to an IRS agent within about 20 minutes instead of the hours or days I had been trying on my own. The agent was able to confirm exactly what documents needed to be filed to correct the EIN issue and even put notes in the system about the pending correction to prevent automatic notices being sent.

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Been there with tax filing problems before - trying to get through to the IRS to sort out mistakes can be absolute hell. After weeks of busy signals and disconnects trying to resolve an EIN issue similar to yours, someone recommended I try Claimyr (https://claimyr.com) to actually get through to a human at the IRS. You can see how it works here: https://youtu.be/_kiP6q8DX5c I was pretty desperate so I gave it a shot, and they actually got me connected to an IRS agent within about 20 minutes instead of the hours or days I had been trying on my

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Wait, I don't understand how this works? The IRS phone system is completely broken - how does this service actually get you through when nobody else can? Sounds too good to be true.

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Sorry but this sounds like a scam. Why would I pay someone else to call the IRS for me? And how do they magically get through when millions of calls go unanswered? I tried calling about my business tax ID issues for weeks last year and eventually just gave up.

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It's not that they call the IRS for you - the service connects you directly to the IRS using their system that navigates the phone tree and waits on hold so you don't have to. When an actual IRS agent picks up, you get an alert and jump on the call. It's still you speaking directly to the IRS, not a third party. The reason it works is they use technology to continuously redial and navigate the IRS phone systems in the background. Most people give up after a few attempts or can't stay on hold for hours, but their system can keep trying indefinitely until it gets through. I was skeptical too until I was actually speaking with an IRS agent and got my questions answered in one day instead of weeks of frustration.

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Just wanted to come back and say I was completely wrong about Claimyr. After continuing to get nowhere with the IRS regarding my EIN issue, I decided to try it out of desperation. Within 35 minutes I was actually speaking to an IRS representative - after literally weeks of failed attempts on my own. The agent confirmed that incorrect EINs are actually a common problem and walked me through exactly what forms I needed to file. They even gave me a reference number for the call so I could refer to our conversation if there were any questions about the amended returns. I was able to get clear answers about potential penalties (likely to be waived in my situation) and timeline for processing the corrections. Worth every penny just for the stress reduction of finally getting actual answers instead of endless hold music.

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I work in accounting (not a CPA) and see this kind of thing occasionally. One thing nobody's mentioned yet - make sure to check if the incorrect EIN affected your state tax filings too! Many states just pull info directly from your federal return, so the same error might exist on your state filings.

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Solid point! What's the process for amending state returns when the federal ones are being corrected? Do you just wait for the IRS amendments to process first?

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Good question! Generally, you should file your state amendments after submitting the federal amendments, but don't wait for the federal processing to complete - that can take 6+ months these days. Most states want you to attach a copy of your federal amendment form (like 1120-X) to your state amendment form. The process varies by state, but most have their own business tax amendment forms. For example, California uses Form 100X for corporations, while New York uses Form CT-3 with "amended" marked at the top. Some states are more forgiving than others about timing, but I generally advise clients to file state amendments within 30 days of filing the federal ones.

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you shud definitely find a new CPA... thats a huge mistake to make 2 years in a row!! my cousin had something similar happen and ended up with penalties even tho it wasn't his fault. make sure they pay for the cost of fixing it all!!!

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Not necessarily a reason to immediately fire them. Everyone makes mistakes and if they handle the correction professionally (for free) and take responsibility, it might be worth keeping them. Especially if they've been good otherwise.

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This is definitely a serious situation that needs immediate attention, but it's not the end of the world. As someone who's dealt with EIN issues before, here's what you need to do right away: 1. **Document everything** - Get copies of all returns filed with the wrong EIN and gather proof of your correct EIN from your original IRS correspondence. 2. **Contact your CPA firm immediately** - They need to take full responsibility for this error and should handle all amendments at no cost to you. If they try to charge you for fixing their mistake, that's a red flag. 3. **File amended returns ASAP** - You'll need Form 1120-X (if you're a corporation) or the appropriate amended form for your business structure. The sooner you file, the better it looks to the IRS. 4. **Check quarterly payments** - Make sure any estimated tax payments were made under the correct EIN, or those will need to be addressed too. The good news is that EIN errors are more common than you'd think, and the IRS has procedures to handle them. With proper documentation and prompt correction, penalties are often waived. Don't panic, but don't delay - time is important here. As for finding a new CPA, I'd wait to see how professionally they handle fixing this mess before making that decision.

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This is really helpful advice, thank you! I'm curious about the documentation part - when you say "proof of your correct EIN from your original IRS correspondence," what specific documents should I be looking for? I have my EIN confirmation letter from when I first applied, but is there anything else I should gather to strengthen my case that this was clearly a preparer error and not something I did wrong?

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Great question! Your original EIN confirmation letter (CP 575) is the most important document - that's your golden ticket showing the IRS assigned you that specific number. You should also gather any bank account opening documents that show your correct EIN, business license applications, and any prior year tax returns that used the correct number. If you have any correspondence with your CPA where you provided the correct EIN (emails, intake forms, etc.), that's incredibly valuable evidence. Also look for any contracts, vendor agreements, or state tax filings that show you've been consistently using the correct EIN in your business operations. The key is showing a clear pattern that you've always known and used your correct EIN, making it obvious this was a transcription error by the preparer. This documentation will support your penalty abatement request and demonstrate you acted in good faith throughout.

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I went through almost the exact same situation two years ago - my previous CPA had been using an EIN with one digit transposed for THREE tax years before I caught it. I was absolutely panicked when I discovered it, but it turned out to be much more manageable than I initially feared. The key thing that saved me was acting quickly once I found the error. I immediately gathered all my documentation showing the correct EIN (original IRS letter, business bank account info, etc.) and demanded that my CPA firm handle all the amendments at their expense. They initially tried to minimize the issue, but when I showed them the clear paper trail of their mistake, they took full responsibility. Filed amended returns for all three affected years within about 6 weeks of discovering the problem. The IRS was actually quite reasonable about it - no penalties were assessed since I included a detailed explanation of the preparer error and corrected it promptly. The whole process took about 8 months to fully resolve, but that was mainly just waiting for the IRS to process everything. One thing I learned is that this type of error is surprisingly common, especially with newer CPA staff who might be handling data entry. The important thing is that you caught it and are taking action to fix it. Your situation with just two years should be much simpler to resolve than mine was. Also ended up switching to a different CPA firm after that experience - not just because of the error, but because of how they initially handled it when I brought it to their attention.

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Thank you for sharing your experience - it's really reassuring to hear from someone who went through the same thing successfully! Three years of wrong EIN filings sounds even more stressful than my situation. I'm curious about the timeline you mentioned - when you say it took 8 months to "fully resolve," does that mean it took that long for the IRS to officially acknowledge the corrections, or were there other steps involved? I'm trying to set realistic expectations for how long this process might take, especially since I'm already feeling anxious about potential issues with my 2024 filing season coming up.

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The 8 months was mostly waiting for the IRS to process all the amended returns and send confirmation letters showing they'd accepted the corrections. The actual work of filing the amendments took about 6 weeks like I mentioned, but then it was just a waiting game for the IRS machinery to churn through everything. For your timeline concerns about 2024 filing - you should be fine as long as you get your amendments filed soon. I was able to file my current year return normally while the previous years' amendments were still being processed. The IRS systems are pretty good at keeping things separate once you've filed the corrections with proper explanations. Just make sure your 2024 return uses the correct EIN obviously, and maybe include a brief note referencing the amended returns you've filed for the prior years if you want to be extra cautious. The key is showing the IRS that you're being proactive about fixing the error rather than trying to hide it.

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I'm dealing with a very similar EIN error situation right now - my accountant used the wrong EIN for my LLC's 2023 return and I just discovered it when preparing this year's documents. Reading through everyone's experiences here has been incredibly helpful and honestly a huge relief to know this isn't as catastrophic as I initially thought. One question I haven't seen addressed yet - did anyone have issues with their business bank accounts or payment processors when the EIN discrepancy came to light? I'm worried that when I file the amended return with the correct EIN, it might trigger some kind of mismatch alerts with my bank or credit card processor since they have my correct EIN on file but the IRS had been receiving returns with the wrong one. Also, for those who successfully resolved this - did you end up getting refund checks or owing additional money after the amendments were processed? I'm trying to figure out if I should set aside cash in case there are unexpected tax implications from the correction process.

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Great questions! I didn't have any issues with my bank or payment processors when I corrected my EIN situation. Banks and processors typically verify your EIN when you first set up accounts, but they don't continuously cross-reference it with IRS filings. The mismatch was only on the tax filing side, not affecting my day-to-day business operations. As for financial implications from the amendments - in my case, there was no change to the actual tax owed since the income and deductions were correct, just filed under the wrong identifier. The amended returns were essentially just moving the same tax information from the incorrect EIN to the correct one. However, you should double-check that all your business expenses and deductions were properly captured on the original returns, since this might be a good opportunity to catch any other errors your accountant may have made. I'd recommend setting aside a small amount just in case, but most likely you won't see any significant tax changes from the EIN correction itself.

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This is definitely a stressful situation, but you're handling it the right way by taking action quickly. I went through something similar with my small business a few years ago - different type of error, but the same panic when you realize your tax filings aren't what they should be. One thing that really helped me was keeping detailed records of every step I took to fix the problem. Document all your communications with the CPA firm, save copies of every form you file, and keep a timeline of when you discovered the error versus when the original returns were filed. This paper trail becomes incredibly valuable if the IRS has any questions later. Also, don't let your CPA firm make you feel like this is somehow your fault or a "minor clerical error." Transposing digits in an EIN for two consecutive years suggests they're not double-checking their work properly. A good CPA should have multiple verification steps to catch exactly this type of mistake. The silver lining is that you caught this before filing your 2024 return, so you can make sure everything going forward is correct. And honestly, dealing with this now during the slower part of tax season (versus discovering it in March) actually works in your favor for getting timely responses from both your CPA and the IRS.

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This is really solid advice about documentation - I wish I had thought to keep such detailed records when I first discovered my EIN issue. You're absolutely right that having a clear timeline showing when the error was discovered versus when the returns were originally filed helps establish that this was caught and addressed promptly rather than ignored. Your point about not letting the CPA minimize this as a "minor clerical error" really resonates with me. An EIN is literally the most basic identifying information for a business tax return - getting it wrong is like addressing mail to the wrong house number. The fact that it happened for two consecutive years definitely suggests a systemic problem with their review process. I'm also relieved to hear that discovering this during the off-season is actually advantageous. I was worried that waiting until now to catch the mistake might look bad, but you're right that at least I have time to get everything sorted before the next filing deadline hits.

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I'm so sorry you're dealing with this stress! As someone who's been through tax filing nightmares before, I completely understand that sinking feeling when you discover a major error like this. The good news is that you've caught it relatively early and EIN errors, while serious, are definitely fixable. Based on what others have shared here, it sounds like the key is acting fast and making sure your CPA firm takes full responsibility for their mistake. One thing I'd add that I haven't seen mentioned yet - when you're gathering documentation to support your case, also look for any business correspondence or contracts where you've used your correct EIN. Things like vendor agreements, client contracts, or even business insurance policies can help establish a pattern that you've always known and used the right number. This makes it crystal clear that the error was on the preparer's side, not yours. Also, while you're dealing with the federal amendments, don't forget to check if this affected any business licenses or registrations with your state. Sometimes these reference your EIN as well, and you want to make sure everything is consistent across all agencies. You're going to get through this! The fact that you caught it and are taking immediate action puts you in a much better position than if you had ignored it or tried to fix it quietly. The IRS actually tends to be pretty reasonable when taxpayers proactively address errors like this.

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This is such helpful advice about gathering supporting documentation! I hadn't thought about looking at business insurance policies or vendor contracts to show consistent EIN usage - that's really smart. It definitely helps build a stronger case that this was purely a preparer error. Your point about checking state business licenses and registrations is also really important. I just realized I should probably verify that my state business registration and sales tax permit both have the correct EIN listed, since those could potentially create additional complications if there are mismatches across different agencies. Thank you for the reassurance about the IRS being reasonable when taxpayers are proactive. After reading everyone's experiences here, I'm feeling much more confident that this is manageable rather than the disaster I initially thought it was. It's amazing how much better it feels to know other people have successfully navigated similar situations.

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I can definitely relate to the panic you're feeling right now - discovering a two-year EIN error would stress anyone out! But based on what everyone else has shared, you're in a much better position than you might think. One thing I'd recommend doing immediately is creating a simple spreadsheet to track all the moving pieces of this correction process. List out both affected tax years, what forms need to be amended, any quarterly payments that might be affected, and deadlines for getting everything filed. Having it all organized in one place will help you feel more in control and ensure nothing falls through the cracks. Also, when you talk to your CPA firm about this, don't just focus on getting the amendments filed - ask them what changes they're implementing to prevent this from happening again. Any reputable firm should be reviewing their quality control processes after an error like this. Their response will tell you a lot about whether they're worth keeping as clients. The fact that you caught this during your own document review (rather than getting a notice from the IRS) actually works in your favor. It shows you're diligent about your business affairs and gives you time to get ahead of any potential issues. You've got this!

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The spreadsheet idea is brilliant - I wish I had thought of that when I was dealing with my own tax issues! Having everything organized in one place really does help reduce the anxiety of feeling like there are too many moving pieces to keep track of. Your point about asking the CPA firm what they're doing to prevent future errors is spot on. That's exactly the kind of question that separates professional firms from ones that just want to sweep mistakes under the rug. A good firm should be able to explain specific changes to their review process, like having a second person verify all EINs before filing or implementing some kind of checklist system. I'm also glad you mentioned that catching this during self-review is actually advantageous. When you're in panic mode, it's easy to think "what if I had never noticed this?" but the reality is that being proactive about discovering and fixing errors shows responsibility and good faith effort to comply with tax laws.

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I'm really sorry to hear about this situation - discovering a two-year EIN error would definitely send anyone into panic mode! But after reading through all the helpful responses here, it sounds like you have a clear path forward. As someone who works in small business consulting, I've seen this type of preparer error more often than you'd expect. The key things that will help you get through this smoothly: 1. **Act fast but don't panic** - You caught this at a good time of year when both CPAs and the IRS have more bandwidth to handle corrections properly. 2. **Make your CPA firm own this completely** - They should handle all amended filings at zero cost to you and provide a detailed explanation letter for the IRS. If they try to minimize this or charge you for corrections, that's a major red flag about their professionalism. 3. **Document everything** - Keep copies of all your communications with the CPA firm, your original EIN documentation, and any business records showing you've consistently used the correct EIN in your operations. 4. **Don't let this derail your 2024 planning** - Once you file the amendments with proper explanations, you can proceed normally with this year's tax planning using your correct EIN. The silver lining is that EIN corrections are routine for the IRS when handled proactively with proper documentation. You're going to get through this just fine!

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Thank you so much for this reassuring perspective! As someone who works in small business consulting, your advice carries extra weight and really helps put this situation in context. I'm particularly relieved to hear that EIN corrections are routine for the IRS when handled properly - that's exactly what I needed to hear right now. Your point about acting fast but not panicking really resonates with me. I've been oscillating between "this is a disaster" and "maybe it's not that bad" since I discovered the error, but reading everyone's experiences here has helped me find a more balanced approach. The fact that I caught this in January rather than during busy tax season does seem like a stroke of good timing. I'm definitely going to follow your advice about making the CPA firm take complete ownership. They've been defensive when I initially brought this up, but I think I was too apologetic about "bothering them" with it. This is clearly their error and they need to fix it properly. Thanks for giving me the confidence to be more assertive about that!

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I completely understand the stress you're experiencing right now - discovering that your CPA made the same critical error for two consecutive years would shake anyone's confidence! But after reading through all these helpful responses, it's clear you have a solid roadmap for resolving this. What strikes me most is how proactive you've been in catching this error during your own document review rather than waiting for an IRS notice. That actually demonstrates exactly the kind of responsible business management that works in your favor when requesting penalty abatements. A few additional thoughts based on what others have shared: **Timeline expectations**: While the amendment process can take 6-8 months for full IRS processing, you should be able to file your 2024 return normally once you've submitted the corrections with proper explanations. **CPA firm accountability**: Their initial reaction to this discovery will tell you everything you need to know about their professionalism. A reputable firm should immediately take full responsibility, handle all corrections at no cost, and explain what process changes they're implementing to prevent future errors. **Documentation is key**: Beyond your EIN confirmation letter, gather any business contracts, bank documents, or prior communications that show you consistently provided the correct EIN. This creates an ironclad case that the error was purely on the preparer's side. You're handling this exactly right by addressing it head-on rather than hoping it goes away. The IRS actually appreciates taxpayers who proactively correct errors with proper documentation and explanations.

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This is such excellent comprehensive advice! Your point about the proactive discovery actually working in favor for penalty abatements is something I hadn't fully considered - it really does show good faith compliance rather than trying to hide mistakes. I'm especially grateful for your timeline clarification about being able to file 2024 returns normally once the amendments are submitted. That was one of my biggest concerns - whether this error would somehow complicate or delay my current year filings. Knowing I can proceed with this year's taxes while the corrections are being processed is a huge relief. Your advice about using the CPA firm's reaction as a litmus test for their professionalism is spot on. I think I've been too hesitant to push back on their initial defensive response, but you're absolutely right that a reputable firm should immediately own this mistake and outline concrete steps they're taking to prevent it from happening again. Their reaction will definitely inform my decision about whether to continue working with them. Thanks for helping frame this as something manageable rather than catastrophic. Reading everyone's experiences here has been incredibly reassuring!

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I'm really sorry to hear about this stressful situation! As a fellow small business owner, I can only imagine how panicked you must have felt when you discovered this error. But after reading through all the excellent advice here, it sounds like you have a clear path forward and this is definitely fixable. What really stands out to me is that you caught this through your own diligent document review rather than getting blindsided by an IRS notice. That actually puts you in a much stronger position - it demonstrates good faith effort and responsible business practices, which the IRS takes into account when considering penalty waivers. A few things I'd emphasize based on what others have shared: - **Time is your friend right now** - Discovering this in January gives you plenty of runway to get everything corrected before the next filing season gets crazy - **Don't let your CPA minimize this** - Transposing an EIN for two consecutive years suggests a systematic problem with their quality control, not just a simple typo - **Keep detailed records** of every step you take to fix this, including all communications with your CPA firm The consensus seems to be that EIN errors, while serious, are more common than you'd think and the IRS has established procedures for handling them. With proper documentation and prompt action, you should be able to get through this without major penalties. You're handling this exactly right by taking immediate action instead of hoping it goes away. Stay strong - you've got this!

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Thank you for such a thoughtful and encouraging response! As someone new to this community, I'm honestly amazed by how supportive and knowledgeable everyone has been about this issue. When I first discovered the EIN error, I felt completely alone and wasn't sure where to turn for advice. Your point about timing being on my side really helps put things in perspective. I was initially beating myself up for not catching this sooner, but you're absolutely right that discovering it in January is actually ideal timing - both for getting professional help during the slower season and for having plenty of time to resolve everything before next year's filing deadlines. The emphasis on documentation from everyone here has been eye-opening too. I've already started gathering all my EIN-related paperwork and creating that spreadsheet someone mentioned earlier to track all the moving pieces. It's actually helping me feel more in control of the situation rather than overwhelmed by it. I'm definitely taking the advice about not letting my CPA firm minimize this error. Reading everyone's experiences has given me the confidence to be more assertive about expecting them to take full responsibility and handle all corrections at their expense. Thanks for the encouragement - this community has been incredibly helpful!

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