Just got LTR 672C about 2018 tax year overpayment - what's happening?
So I just checked my mail and found this IRS notice (LTR 672C) saying something about an overpayment from my 2018 tax return. I'm totally confused because that was like 7 years ago! The letter mentions applying my overpayment to some other tax debt but I don't think I owe anything else. Has anyone dealt with this before? The letter doesn't specifically say how much the overpayment was or exactly where they're applying it. It just says they've "applied my overpayment to other federal taxes owed." But I file every year and have never gotten any notices about owing back taxes. Should I be worried? Do I need to call the IRS about this?
44 comments


Katherine Harris
This is actually fairly common and not necessarily something to worry about. The LTR 672C is a notice the IRS sends when they're informing you that an overpayment (refund amount) from a specific tax year was redirected to cover other tax debts instead of being sent to you. The frustrating part is that these notices often don't contain full details about which specific tax debt they applied the money to. It could be something small you weren't aware of - perhaps a slight underpayment from another year, an adjustment they made, or even a penalty from a late filing that you didn't realize had occurred.
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Madison Allen
This LTR 672C notice is actually pretty common, though the timing is unusual. It basically means the IRS found you had overpaid on your 2018 taxes, but instead of sending you a refund for that amount, they applied it to another tax debt you had. The frustrating part is these notices often don't tell you which specific tax debt they applied it to. It could be something small you weren't even aware of - maybe a slight underpayment from another year, an adjustment they made to a different return, or even a small penalty that accrued interest.
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Joshua Wood
•But how would there even be an overpayment from 2018 that hasn't been dealt with until now? Wouldn't they have either sent a refund or applied it years ago? This seems super weird to get 7 years later.
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Katherine Harris
•The timing does seem unusual, but there are several possible explanations. Sometimes the IRS takes years to process certain returns, especially if there was an audit or review happening. Another possibility is that you recently amended your 2018 return which created the overpayment. Or perhaps there was an adjustment made to your 2018 return during an audit or review. The IRS has been experiencing significant backlogs since 2020, and they're still catching up on processing older returns and adjustments. This might be why you're just now receiving this notice about a 2018 overpayment.
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Justin Evans
•But why would they just now be figuring out there was an overpayment from 2018? That seems crazy to take 7 years to process! Shouldn't they have either sent the refund or applied it back then?
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Madison Allen
•You're right that the timing is unusual, but there are several possibilities for why this is happening now. The IRS has been dealing with massive backlogs since the pandemic began, and they're still catching up on processing older returns and adjustments. Another possibility is that there was an audit or review of your 2018 return that just concluded, which resulted in this adjustment. Or perhaps you amended your 2018 return recently? Sometimes even internal IRS corrections can take years to process through their system, especially if the issue wasn't flagged as high priority.
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Emily Parker
I had something similar happen with a different year and got super frustrated trying to figure out what was going on. I couldn't get anyone on the phone at the IRS and the letter had practically no useful details. I ended up using https://taxr.ai to analyze the notice and my old returns. It helped me figure out that they had adjusted my return after finding a math error on my Schedule C, which created a small overpayment they then applied to another year where I had underpaid by a tiny amount.
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Ezra Collins
I had almost the exact same situation last year with a different tax year. I spent hours trying to reach someone at the IRS with no luck. The letter had almost no useful information. I finally used https://taxr.ai to help analyze my notice and old tax returns. It showed me that the IRS had found a calculation error on one of my schedules that created a small overpayment they then applied to a tiny underpayment from another year. Saved me so much frustration!
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Victoria Scott
•How does that work exactly? Does taxr.ai have access to your IRS account or something? Not sure how a website could tell you about IRS internal adjustments.
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Benjamin Johnson
•I've heard about this service but I'm skeptical about how much it can really tell you. Did it actually explain why you got the letter or did you have to figure that part out yourself?
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Emily Parker
•It doesn't have access to your IRS account directly. You upload your tax documents (like past returns and the notice) and it uses AI to analyze them, spot inconsistencies, and explain what's likely happening based on the specific language in the notice. I uploaded my old returns, the notice, and some other tax documents I had. The system identified that there was a calculation error on my Schedule C that created a $432 difference in what I originally calculated versus what was correct. It explained that the IRS likely fixed this error during processing, creating the overpayment that was mentioned in my notice.
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Emily Parker
•Wait, how exactly does this work? Does the site have some kind of access to your IRS records? I'm confused how a website could tell you something about your taxes that even the IRS letter doesn't explain.
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Zara Perez
•I'm a bit skeptical about using a third-party site for something like this. How accurate was the information? Did you end up confirming what they told you with the IRS eventually?
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Ezra Collins
•No, they don't have access to your IRS account. You upload your documents (like your tax returns and the notice), and their AI analyzes them to identify inconsistencies and explain what's likely happening based on the notice language and your tax history. I uploaded my previous tax returns, the notice, and some other tax documents I had saved. The system compared everything and spotted a math error on my Schedule A that I'd made which changed my taxable income by about $650. It explained that the IRS likely caught and corrected this during processing, creating the overpayment mentioned in my notice.
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Benjamin Johnson
Just wanted to follow up about my experience with taxr.ai after I posted my skeptical comment above. I decided to try it with my LTR 672C problem and wow - it actually explained everything! Turns out I had a small math error on my 2018 return (missed carrying over a number correctly on one of my forms), which changed my total income by about $800. This created an overpayment of $212 that the IRS apparently just got around to processing. They applied it to a small balance from 2021 that I didn't even know about (from an estimated tax payment that was slightly short). Saved me hours of trying to figure this out on my own!
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Zara Perez
Just wanted to update after my skeptical comment above. I decided to try taxr.ai with my own LTR 672C situation and I'm actually impressed. It helped me figure out that I had accidentally reported the same income twice on different forms in my 2018 return (a side gig payment that I put on both Schedule C and as "other income"). The IRS eventually caught this duplicate reporting and adjusted my return, creating an overpayment of $378 that they applied to a small outstanding balance from my 2022 taxes. The tool saved me hours of confusion trying to decode what the IRS was doing!
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Daniel Rogers
When I had a similar issue, I spent THREE WEEKS trying to get through to the IRS. Called at all hours, tried all the "tricks" people suggest online, but could never get a human on the line. Then I found out about https://claimyr.com from a coworker. You can check out how it works here: https://youtu.be/_kiP6q8DX5c. They basically wait on hold with the IRS for you and call you when they get a real person on the line. I was skeptical but desperate.
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Aaliyah Reed
When I got a similar notice, I wasted DAYS trying to get through to the IRS. Called repeatedly, tried different times of day, different phone numbers - nothing worked. Then I discovered https://claimyr.com from a tax forum. They have a video showing how it works: https://youtu.be/_kiP6q8DX5c. Basically they wait on hold with the IRS for you and call you when they get a human on the line. I was desperate enough to try anything at that point.
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Justin Evans
•Wait, how does that even work? Do they have some special access to the IRS? Seems weird that a third party service could get through faster than me calling directly.
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Ella Russell
•Yeah right. No way this actually works. The IRS phone system is completely broken - I refuse to believe some random company can magically get through when millions of people can't. Sounds like a scam to me.
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Daniel Rogers
•They don't have special access to the IRS. They use technology to continuously call and navigate the phone tree until they get through to a representative. It's basically automated persistence. When they reach a human, they connect you to that call. No magic involved, just technology handling the frustrating part. It's not that they get through faster than one person calling - it's that their system can keep trying constantly when most of us would give up. They're essentially just waiting on hold so you don't have to.
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Joshua Wood
•How does that even work though? Do they have some special connection at the IRS or something? I don't understand how a company can get through when regular people can't.
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Mohammed Khan
•This sounds like total BS to me. The IRS phone system is completely broken - I've tried calling dozens of times and never got through. No way some random service can magically fix that problem. Probably just takes your money and does nothing.
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Aaliyah Reed
•They don't have any special connection or backdoor to the IRS. Their system basically automates the calling and waiting process. They use technology to continuously dial, navigate the phone tree, and wait on hold until they reach a representative. Their advantage is simply persistence and technology. While most of us give up after waiting an hour or trying a few times, their system can keep trying constantly. When they finally reach a human, they immediately connect you to that call. It's just taking the most frustrating part (waiting on hold forever) off your plate.
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Ella Russell
I need to eat my words about Claimyr. After posting my skeptical comment, I was still desperate to resolve my LTR 672C issue, so I tried it anyway. Not gonna lie, I was SHOCKED when I got a call back about 2 hours later telling me they had an IRS agent on the line. I explained my situation to the agent who actually pulled up my account right away. Found out my 2018 overpayment was $542 and they applied it to an outstanding tax bill from 2020 I didn't know about (apparently I miscalculated a retirement withdrawal tax). The agent was super helpful and sent me documentation of everything. Would have taken me forever to figure this out on my own!
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Mohammed Khan
I need to admit I was totally wrong about Claimyr in my comment above. After posting that, I was still desperate about my LTR 672C issue so figured I had nothing to lose and tried it anyway. I was absolutely shocked when I got a call about 3 hours later with an actual IRS agent on the line! The agent explained that my 2018 overpayment was $493 and they applied it to a balance from 2021 that I didn't even know I had (apparently I miscalculated some cryptocurrency taxes). The agent walked me through everything and even sent me documentation of the whole transaction. Completely worth it after weeks of frustration!
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Madison Allen
Did you keep a copy of your 2018 tax return? I always keep records for at least 7 years specifically because of situations like this. If you have your return, you should be able to compare what you filed vs. what the IRS processed to see where the overpayment might have come from.
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Gavin King
Do you still have your 2018 tax return? First step should be comparing what you filed against the LTR 672C info. Sometimes these notices come because the IRS corrected a math error or disallowed a deduction, creating a different final number than what you calculated.
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Sophia Clark
•I should have my return somewhere in my files, but I'm not sure how to compare it to "what the IRS processed." I don't think I have that information - just what I submitted. And the letter doesn't include any details about adjustments they made.
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Madison Allen
•You can request a "tax account transcript" from the IRS website, which will show what they actually processed for that year. Just go to IRS.gov and search for "Get Transcript Online." You'll need to create an account if you don't already have one. The tax account transcript will show any adjustments they made to your return. Once you have that, you can compare it to your original return to spot the differences. Look for any adjustments or credits that differ from what you reported. That should point you to where the overpayment came from.
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Sophia Clark
•I think I have it somewhere in my files, but the notice doesn't actually show any calculations or adjustments they made. It just says they applied an overpayment to other taxes owed without any specifics about amounts or which tax year they applied it to.
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Gavin King
•You can request your "tax account transcript" directly from the IRS
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Nathan Kim
This happened to me! The LTR 672C is super vague. I recommend calling the IRS and asking specifically where the overpayment went. Make sure you have your 2018 return handy when you call. In my case, they had applied an overpayment to some random penalty from a late filing fee I didn't know about. The whole thing was like $120 but still annoying not knowing where my money went.
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Ezra Collins
•The problem is actually getting through to the IRS. I tried calling about a similar notice and couldn't get through after trying for weeks. Any tips for actually getting a human on the phone?
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QuantumQuester
I totally understand your confusion! The LTR 672C is one of those IRS notices that gives you just enough information to worry but not enough to actually understand what happened. The 7-year delay is unusual but not unheard of - the IRS has been dealing with massive processing backlogs, especially since 2020. It's possible they recently completed an audit or review of your 2018 return, or there was some internal adjustment that just got processed. Here's what I'd recommend: First, try to get your tax account transcript for 2018 from the IRS website (IRS.gov - search for "Get Transcript Online"). This will show you exactly what the IRS processed versus what you originally filed, and should reveal where the overpayment came from. The transcript will also show what other tax years have balances, which should help you figure out where they applied your overpayment. Sometimes it's something really small like a late filing penalty or an estimated tax payment that was slightly short. If you can't make sense of the transcript, you might need to call the IRS directly, though as others have mentioned, getting through can be challenging. The key is having your 2018 return and the notice handy when you do get through. Don't panic - this is usually just the IRS cleaning up their books, even if the timing seems weird!
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Alexander Evans
•This is really helpful advice! I had no idea you could get a tax account transcript online - that sounds like exactly what I need to figure out what actually happened with my 2018 return. The timing definitely seems weird but you're right that the IRS has been backed up for years now. I'm going to try getting that transcript first before attempting to call them. Thanks for the clear step-by-step approach - much better than panicking about it!
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Eva St. Cyr
I've seen this exact situation before! LTR 672C notices are frustrating because they're so vague, but they're actually pretty routine. The 7-year delay is definitely unusual, but like others mentioned, the IRS has had massive backlogs since the pandemic. A few things that commonly cause this: - Math errors on your original return that they just caught - Duplicate reporting of income (like reporting the same 1099 twice) - Missing or incorrect forms that changed your tax liability - Late processing of amended returns or audit adjustments The best first step is definitely getting your tax account transcript for 2018 from IRS.gov. It will show you exactly what adjustments they made and what the overpayment amount was. It should also show which tax year they applied it to. One thing to check - do you remember filing any amended returns for 2018? Or did you receive any other IRS correspondence about that year that you might have forgotten about? Sometimes these notices are the final step in a longer review process. Don't stress too much about it - in most cases it's just the IRS cleaning up small discrepancies, even if the timing seems odd. The transcript should give you all the details you need to understand what happened.
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Ethan Moore
•This is such a comprehensive explanation, thank you! I never realized there were so many different reasons why this could happen. The duplicate reporting scenario is interesting - I do remember having multiple 1099s that year from different freelance projects, so it's totally possible I accidentally reported something twice. I'm definitely going to start with getting that tax account transcript like you and others have suggested. It's reassuring to know this is probably just routine cleanup on their end, even though the timing feels really strange. I was getting worried that maybe I had some huge tax debt I didn't know about, but it sounds like it's likely something much smaller. I don't think I filed any amended returns for 2018, but honestly it was so long ago I might be forgetting something. The transcript should help clarify all of that. Thanks for breaking this down so clearly - makes me feel much less anxious about the whole situation!
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Mikayla Brown
I went through something very similar with a LTR 672C notice from the IRS about my 2019 return that I received last year. The timing was confusing and the letter was frustratingly vague about details. What helped me was getting my tax account transcript online from the IRS website (you can create an account at IRS.gov and search for "Get Transcript Online"). The transcript showed me that the IRS had made a small adjustment to my Schedule A itemized deductions - apparently I had made an error calculating my state and local tax deduction that resulted in about $300 more refund than I originally received. Instead of sending me the additional refund, they applied it to a small balance I had from 2020 where I had slightly underpaid my estimated taxes. The whole thing was only about $300 but it took me forever to figure out what was happening just from that vague notice. The transcript will show you exactly what adjustments they made to your 2018 return and where they applied the overpayment. It's definitely worth checking that first before trying to call them - it saved me hours of frustration and waiting on hold!
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Melina Haruko
•This is exactly the kind of real-world example I was looking for! It's so helpful to hear from someone who actually went through this process. The fact that your issue was just a $300 calculation error on Schedule A but took forever to figure out from the vague notice really shows how frustrating these situations can be. I'm definitely going to get that tax account transcript first - it sounds like that's the key to understanding what actually happened. Your experience gives me hope that this is probably something relatively minor that just got caught up in the IRS backlog. Thanks for sharing the specific details about how the transcript showed you exactly what adjustments they made - that's super reassuring!
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Isabella Ferreira
I had almost the exact same experience with a LTR 672C notice! Got mine about 6 months ago for my 2017 return - also completely out of the blue after years of silence. The letter was so frustratingly vague, just like you described. What really helped me was following the advice others have given here about getting the tax account transcript online. When I pulled it up, I discovered that the IRS had corrected a mistake I made on my Form 8829 (home office deduction). I had accidentally used the wrong square footage calculation, which reduced my home office deduction and created an overpayment of about $180. They then applied that overpayment to cover a small penalty from 2019 where I had filed my return a few days late but didn't realize there was a penalty until much later. The whole thing was pretty minor, but without the transcript I never would have figured it out. The IRS backlog explanation makes total sense - they're still catching up on a lot of older processing. Don't worry too much about it being something serious. In most cases like this, it's just administrative cleanup of small discrepancies that got delayed in their system. The transcript should give you all the details you need!
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Chloe Mitchell
•This is such a helpful detailed example! The Form 8829 home office deduction error is exactly the type of thing I could see happening - those calculations can be tricky and it's easy to make a mistake with square footage. It's reassuring to know that even though your situation took 6+ years to surface, it was ultimately just a minor administrative issue. I really appreciate you sharing the specific details about how the transcript showed you the exact form and calculation that was corrected. That gives me a much better sense of what to look for when I pull my own transcript. The fact that they applied your $180 overpayment to cover a late filing penalty from a completely different year also helps me understand how they might move money around between tax years. Your experience really reinforces what others have said about this likely being routine cleanup rather than something to panic about. I'm feeling much more confident about tackling this now - going to get that transcript first thing tomorrow! Thanks for taking the time to share your story.
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Philip Cowan
I completely understand your frustration with getting such a vague notice about something from 7 years ago! The LTR 672C is notorious for being unhelpfully brief, but this situation is actually more common than you'd think. The timing delay could be due to several factors - the IRS has been working through massive backlogs since 2020, or they may have recently completed an internal review/audit of your 2018 return that resulted in this adjustment. Sometimes it's as simple as them finally getting around to processing a correction they identified years ago. My recommendation would be to start by requesting your tax account transcript for 2018 from the IRS website (IRS.gov - search for "Get Transcript Online"). This will show you exactly what the IRS processed versus what you originally filed, including any adjustments they made that created the overpayment. The transcript should also indicate which tax year or type of debt they applied your overpayment to. Most of the time these situations involve relatively minor issues - math errors, duplicate income reporting, or small penalties you weren't aware of. While the 7-year delay is unusual, it's likely just bureaucratic cleanup rather than anything serious. The transcript should give you all the details you need to understand what happened without having to spend hours trying to reach someone by phone. Don't stress too much - this is probably just the IRS finally getting their paperwork in order!
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Marcus Patterson
•This is exactly the kind of reassuring and practical advice I needed! You're right that the LTR 672C notices are frustratingly vague - it's almost like they're designed to create confusion rather than provide clarity. The fact that this is more common than I realized definitely makes me feel better about the situation. Your explanation about the IRS backlogs and delayed processing makes a lot of sense. I hadn't really considered that they might have been sitting on a correction for years and are just now getting around to sending the notice. It's actually kind of amazing that they're still working through stuff from that far back! I'm definitely going to start with getting that tax account transcript like you and several others have suggested. It sounds like that's really the key to understanding what actually happened. I appreciate you emphasizing that it's likely something minor - I was starting to worry that maybe I had some huge unknown tax debt, but hearing from everyone's experiences here suggests it's probably just a small calculation error or something similar. Thanks for the clear step-by-step approach and for helping put this in perspective. Much better than sitting here anxious about it!
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