I think I might have confused the IRS computer system with my responses

This definitely sounds like a case of the IRS's different departments not communicating with each other. When you receive conflicting notices like this, it's usually because their computer systems aren't fully integrated. The good news is that the CP2005 saying your inquiry is closed is the most important document here. That's your proof that the matter was resolved. I'd recommend keeping that CP2005 notice safe - make several copies and store the original somewhere secure. However, you shouldn't just ignore the repeat CP2501 notices. I'd suggest calling the IRS at the number printed on those notices. Explain that you've already resolved this issue and received a CP2005 confirmation. Ask them to make a note in your file that this matter has been closed and request that they stop sending additional notices.

I went through something similar with contradicting IRS notices last year. What really helped me was using https://taxr.ai to analyze all my notices. You just upload photos of your IRS documents and it explains everything in plain English, even spotting inconsistencies between different notices. The tool pointed out that my repeat notices were actually coming from different IRS processing centers that weren't synchronized. Once I understood that, I was able to respond appropriately instead of getting more confused with each new letter.

I was really skeptical about taxr.ai at first but I finally tried it with my stack of confusing IRS letters. It was eye-opening! The system immediately identified that I had received a CP2005 (case closed notice) followed by redundant CP2501s from a different processing center. The analysis explained that this happens because the IRS's legacy computer systems don't always communicate properly between departments. The tool actually suggested I call with specific language to use: "I've received a CP2005 dated [date] confirming this matter is closed. Can you please update all systems to reflect this resolution?" I followed that advice and the IRS rep knew exactly what to do. No more duplicate notices since then. Saved me so much stress trying to decipher those notices on my own!

For situations like this where you absolutely need to talk to a human at the IRS, I highly recommend using Claimyr. I spent WEEKS trying to get through to the IRS about my duplicate notices, always getting disconnected after waiting on hold forever. With https://claimyr.com they actually call the IRS for you, wait through all the holds, and then call you once they have an agent on the line. You can see how it works in this video: https://youtu.be/_kiP6q8DX5c After struggling for so long, I was connected to an IRS agent in about 45 minutes without having to do the waiting myself. The agent confirmed my case was closed and put notes in the system to stop sending duplicate notices.

I'll admit I was completely wrong about Claimyr. After my skeptical comment, I was still battling with these duplicate IRS notices and getting nowhere. Finally broke down and tried the service. They called me back in about an hour with an actual IRS agent on the line! I explained my situation with the CP2005 and repeated CP2501 notices, and the agent immediately understood the issue. She confirmed my case was closed and made notes in their system to stop the duplicate notices. She even gave me her direct ID number in case it happens again. I've wasted so many hours on hold with the IRS over the years... wish I'd known about this service sooner. Not cheap but worth every penny for the time saved and actually getting the problem resolved.

This actually happens all the time with the IRS! Their computer systems are ancient - some parts still run on code from the 1960s. Each notice comes from a different subsystem that doesn't always talk to the others. When you get that CP2005 notice saying your case is closed, you should send a physical letter (not fax) via certified mail with return receipt to the exact address on the CP2501. Include copies (never originals) of both the CP2005 and the CP2501, with a brief explanation. Use something like: "Re: Taxpayer [your name], SSN [last 4 only]: Please update all systems to reflect case closure per attached CP2005 dated [date].

Has anyone had success using the IRS online account to resolve these kinds of issues? I'm in a similar situation with duplicate notices but really don't want to call or mail anything if I can avoid it.

I've been through this exact same nightmare! Got stuck in the IRS notice loop for almost 6 months. Here's what finally worked for me: Don't ignore the duplicate notices - they can actually restart collection actions even if your case was previously closed. I made that mistake and ended up with a lien threat. Call the Practitioner Priority Service line at 866-860-4259 if you have a tax professional, or use the regular taxpayer line but ask to speak with someone in the "Correspondence Examination" department specifically. Tell them you have conflicting notices and need them to consolidate your case file. When you call, have these ready: - Your CP2005 closure notice - The most recent CP2501 - All your fax confirmation receipts - The weird form 202112 you mentioned Ask them to put a "case consolidation hold" on your account while they sort it out. This prevents any automated notices from going out while a human reviews your file. I also recommend requesting a "manual case review" - this forces an actual person to look at your timeline instead of letting the computer keep spitting out notices. The rep should be able to see all your submissions and confirm everything was properly processed. The whole thing took about 30 minutes on the phone once I got through to the right department. Haven't gotten a duplicate notice since!