Just saw IRS Notice 2023-21: Lookback period extended for refunds from 2019 and 2020... what does this mean for me??
I was going through some tax stuff and came across something called IRS Notice 2023-21 that apparently extends the lookback period for tax refunds from 2019 and 2020. I'm honestly confused about what this actually means for the average taxpayer. Does this mean I can still claim a refund from those years if I missed something? I filed both years but I'm pretty sure I rushed through 2019 and might have missed some deductions. Is it too late to amend those returns now? I thought there was a 3-year limit on claiming old refunds, but this notice seems to suggest something different. Can someone explain in plain English what this lookback period extension actually means and if it's worth my time to go back and check those old returns?
20 comments


Zainab Mahmoud
Yes, you're in luck! IRS Notice 2023-21 essentially gives taxpayers more time to claim refunds from their 2019 and 2020 tax returns. Normally, the IRS has a three-year statute of limitations for claiming refunds, meaning you'd typically have 3 years from the original filing deadline to amend a return and claim any additional refunds. Due to the pandemic, this notice extends that lookback period, recognizing that many people faced unusual circumstances during those years. So instead of the normal deadline, you now have additional time to file an amended return (Form 1040-X) for those tax years if you discover you're entitled to additional deductions, credits, or refunds. I'd definitely recommend reviewing your 2019 and 2020 returns to see if you missed anything. Common oversights include education credits, business expenses, charitable donations, or retirement contributions. If you find something, file that 1040-X as soon as possible!
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Ava Williams
•How much extra time does this extension actually give us? And do you know if this applies to people who didn't file at all for those years? My brother had some health issues in 2019 and completely missed filing.
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Zainab Mahmoud
•The extension typically gives you an additional year beyond the normal three-year window. So for 2019 returns (which would have been due in 2020), instead of the standard three-year deadline, you get an extra year to claim your refund. For non-filers like your brother, this is actually really important. If he was due a refund but never filed, this extension could be his last chance to claim that money before it becomes permanently unclaimed. He should file his original 2019 return as soon as possible - this isn't even an amendment since he never filed originally. The IRS doesn't typically penalize non-filers who are owed refunds, but they do need to file within the statute of limitations to actually get that money.
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Raj Gupta
After struggling with some similar confusion about IRS Notice 2023-21, I actually used this tool called taxr.ai (https://taxr.ai) that really helped me figure out what this meant for my specific situation. I uploaded my old returns and it spotted a bunch of potential missed deductions from my 2019 return - turns out I could have been claiming home office deductions I totally missed since I started freelancing that year. The tool analyzed both my 2019 and 2020 returns and showed me exactly how to file the amended returns to take advantage of this extended lookback period. It was way easier than trying to figure out all the IRS language myself.
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Lena Müller
•Does it actually help you file the amended return or just identify what you missed? I'm terrible with tax forms and would need help with the actual filing process too.
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TechNinja
•Sounds interesting but I'm always wary of tax tools that want my info. Is it secure? And does it work for complicated situations like rental properties? I had a rental in 2019 but wasn't sure about some of the depreciation stuff.
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Raj Gupta
•It does both - identifies what you missed and then walks you through the amendment process step by step. It even pre-fills the 1040-X form based on your original return and the changes it identifies, which was super helpful for me. For security, they use bank-level encryption and don't store your documents after analysis. I was hesitant too, but their privacy policy was reassuring. And yes, it handles rental properties! It specifically flagged some depreciation items on my friend's return who has two rental properties. The analysis tool seems pretty comprehensive for most tax situations including self-employment, investments, and property.
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Lena Müller
Just wanted to update after trying taxr.ai that someone recommended above. It seriously saved me so much headache! I was missing education credits from 2020 when I took some classes and had no idea I qualified. The tool found about $1,800 in refunds I was owed that I would have completely missed if not for this IRS Notice 2023-21 extension. The amended return process was way easier than I expected. The system generated everything I needed and explained exactly what to do. So glad I didn't ignore this notice like I almost did! If you filed during the pandemic years, definitely worth checking if you left money on the table.
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Keisha Thompson
If you're trying to contact the IRS about this notice or to check on your amended return status, good luck getting through to them. I've been trying for WEEKS to reach someone about my 2019 amendment. Always on hold for hours only to get disconnected. I finally tried this service called Claimyr (https://claimyr.com) after seeing someone mention it on another thread. They somehow got me connected to an actual IRS agent in about 20 minutes when I had been trying unsuccessfully for days. You can see how it works here: https://youtu.be/_kiP6q8DX5c With this lookback period extension, I bet their phone lines are going to be even more swamped with people filing amendments, so having a way to actually get through is pretty crucial.
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Paolo Bianchi
•How does this even work? The IRS phone system is literally designed to be impossible to navigate. Are they using some kind of backdoor method?
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Yara Assad
•Yeah right. Nothing gets you through to the IRS faster. This sounds like snake oil to me. The IRS is deliberately understaffed and no service can magically create more agents to answer calls.
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Keisha Thompson
•It's actually pretty straightforward - they use an automated system that navigates the IRS phone tree and waits on hold for you. When they get a human, they call you and connect you directly to that agent. No backdoor or anything sketchy - they're just doing the waiting for you. I had the exact same reaction as you when I first heard about it. I figured it was a scam or wouldn't work. But after spending literally 3 hours on hold one day only to get disconnected, I was desperate enough to try. I was shocked when my phone rang and there was an actual IRS agent on the line. The representative I spoke with was super helpful about my amended return questions related to Notice 2023-21.
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Yara Assad
I have to admit I was completely wrong about Claimyr in my comment above. After continuing to fail getting through to the IRS myself about my 2019 amended return related to this Notice 2023-21, I reluctantly tried it. My phone literally rang 25 minutes later with an actual IRS agent on the line. I was able to confirm that my amended return for 2019 (claiming additional business expenses I had missed) was received and being processed. The agent even gave me an estimated timeline for my refund. Saved me countless hours of frustration and hold music. Sometimes it's worth admitting when you're wrong!
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Olivia Clark
Has anyone successfully amended a 2019 return that involved unemployment benefits? With all the changes they made mid-tax season about making some unemployment non-taxable, I'm confused if this lookback period affects that too. I received unemployment in 2019 and paid taxes on all of it.
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Javier Morales
•The unemployment tax exemption was specifically for 2020 unemployment benefits, not 2019. It was part of the American Rescue Plan Act of 2021 that made the first $10,200 of 2020 unemployment benefits tax-free for those below certain income levels. 2019 unemployment was still fully taxable. That said, this extended lookback period still applies to your 2019 return - just not for unemployment tax exemption. You should check for other possible deductions or credits you might have missed.
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Olivia Clark
•Thanks for clarifying! That makes sense - I was mixing up the years. I guess I'll still review my 2019 return for other possible missed deductions since we have this extended time period. I was self-employed part of that year too, so maybe there are some business expenses I overlooked.
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Natasha Petrov
Can someone tell me if this Notice 2023-21 lookback extension also applies to business returns? I have a small LLC and filed a separate business return for 2019. Wondering if I can still amend that if needed.
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Zainab Mahmoud
•Yes, the extension generally applies to business returns as well! It covers Forms 1120, 1120-S, 1065, and other business returns. If your LLC files as a partnership (1065) or S-Corporation (1120-S), you'd amend with Form 1065-X or 1120-X respectively. Just keep in mind that for pass-through entities like partnerships and S-Corps, any changes to the business return might necessitate changes to your personal return as well since the income passes through to your individual tax return.
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Carmen Ortiz
This is really helpful information! I had no idea about this extension. I'm definitely going to go back and review my 2019 return - I remember being super stressed that year with a job change and probably rushed through it. Quick question though - when you file an amended return using Form 1040-X, do you need to include copies of all the supporting documents again, or just the new ones for the changes you're making? I don't want to mess this up and delay my refund even more. Also, does anyone know roughly how long amended returns are taking to process right now? I know regular returns were backed up for a while, wondering if amendments are facing similar delays.
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Jamal Thompson
•Great questions! For the supporting documents, you typically only need to include new documentation that supports the changes you're making on your amended return. So if you're adding a charitable deduction you missed, include that receipt. If you're claiming a new business expense, include that documentation. You don't need to re-submit everything from your original return. As for processing times, amended returns are currently taking quite a bit longer than usual - I've seen estimates of 16-20 weeks for most amendments, sometimes longer if they trigger additional review. The IRS is still working through backlogs from the pandemic years. You can check the status of your amended return using the "Where's My Amended Return?" tool on the IRS website about 3 weeks after they receive it. Given this extended lookback period from Notice 2023-21, I'd expect processing times might get even longer as more people file amendments for 2019 and 2020. But don't let that discourage you - if you're owed money, it's definitely worth the wait!
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