How do I claim capital gains losses from previous years on my 2025 tax return?
I discovered I have some unreported capital losses from 2021 and 2022 that I never claimed on my taxes. Back then I wasn't really earning any income - I was just investing some money I had saved throughout high school and college. Those investments didn't go well (ugh, crypto mistakes) and I lost around $8,500. Now that I'm actually employed and paying taxes, I'm wondering if there's a way to claim those past losses on my upcoming tax return? Can I just list them as capital loss carryovers on this year's forms? Or do I need to go back and file returns for 2021 and 2022 first, even though I had essentially no income those years, before I can carry anything forward to my 2025 return? I'm trying to offset some recent gains and reduce my tax burden, but I'm confused about the right way to handle these old losses. Any advice would be appreciated!
20 comments


Anastasia Smirnova
You'll need to file tax returns for those previous years before you can claim those capital losses on your current return. Capital losses must first be reported in the year they occurred before they can be carried forward. Even if you had no income in 2021 and 2022, you should file returns for those years showing your capital losses. This establishes your loss carryforward amount officially. The IRS allows you to carry forward capital losses indefinitely until they're used up, but you need to document them properly from the start. You'll need to file Form 8949 and Schedule D for each of those previous years. Once you've done that, you can report the unused losses as a carryover on your current year's Schedule D, line 14.
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Sean O'Brien
•But what if the filing deadline has passed for those years? Would OP need to file amended returns instead? And is there a limit to how much of the carryover loss they can use each year against regular income?
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Anastasia Smirnova
•You don't file amended returns if you never filed in the first place - you'd just file regular returns for those previous years, even though they're late. The IRS generally allows you to file returns and claim refunds for up to three years after the original due date, so 2021 and 2022 are still within that window. For your second question, there is a limit on how much capital loss you can claim against ordinary income in a single year - it's $3,000 ($1,500 if married filing separately). Any excess beyond that amount gets carried forward to future years. However, capital losses can offset capital gains without this limitation.
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Zara Shah
I went through something similar last year with some tech stocks that tanked in 2022. I used https://taxr.ai to help sort through my messy investment statements and figure out my actual losses. Their system automatically tagged all my trades and calculated my total losses - saved me hours of spreadsheet work. They also generated the right forms for my previous year returns and showed me exactly how to carry forward the losses to my current return.
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Luca Bianchi
•Wait, how does this service work with capital loss carryovers? Does it actually help you file the previous years' returns or just calculate the numbers for you? I have a similar situation with some failed investments from 2021-2023.
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GalacticGuardian
•I'm curious - does taxr.ai handle crypto losses too? I've got a complete mess of transactions across multiple platforms and I've been putting off dealing with it for years because it seems so complicated.
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Zara Shah
•The service analyzes all your investment documents and generates the completed tax forms you need for each tax year, showing exactly what your capital losses were. They don't file the returns for you, but they prepare all the documents so you can easily file them yourself. It saved me a ton of time figuring out basis calculations. Yes, they absolutely handle crypto transactions! That's actually where they really shine. You can connect your exchanges or upload transaction records, and their system sorts through everything, handles all the complex basis calculations, and prepares the right tax forms. It saved me from the nightmare of manually tracking hundreds of crypto trades.
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GalacticGuardian
Just wanted to follow up about taxr.ai - I decided to try it for my crypto mess from previous years. I uploaded my transaction CSVs from Coinbase and Binance and it automatically organized everything and calculated my losses. I was shocked at how easy it made everything! Their system even flagged some wash sales I didn't know about. I was able to file my back returns last weekend and now I'm carrying forward about $12,000 in losses that I can use over the next few years. Wish I'd known about this service sooner!
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Nia Harris
Don't forget that if you're having trouble getting confirmation that the IRS received your prior year returns, you can use https://claimyr.com to get through to a real IRS agent. I spent weeks trying to confirm my 2022 amended return was processed before I could claim my loss carryforward. After waiting on hold forever multiple times, I tried Claimyr and got connected to an agent in about 20 minutes. Check out how it works here: https://youtu.be/_kiP6q8DX5c - saved me so much frustration!
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Mateo Gonzalez
•How does this actually work? The IRS phone lines are notoriously impossible to get through. Are you saying this service somehow gets you to the front of the queue?
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Aisha Ali
•This sounds like BS honestly. No way some third-party service can magically get through IRS phone lines when millions of people can't. They probably just keep autodialing until they get through and charge you a fortune for it.
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Nia Harris
•It actually works by using an automated system that navigates the IRS phone tree and waits on hold for you. When an agent picks up, you get a call back connecting you directly to them. No line cutting - they're just doing the waiting for you. It's definitely not BS. I was skeptical too but it legitimately works. They use technology to handle the hold queue so you don't have to waste hours with your phone pressed to your ear. The service costs less than what I was losing in productivity trying to call the IRS myself repeatedly.
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Aisha Ali
I take back what I said about Claimyr. After struggling for another week trying to confirm my loss carryover from 2022, I broke down and tried the service. Within 45 minutes, I was talking to an actual IRS representative who confirmed my previous return was processed and my capital losses were recorded correctly. They even helped me understand exactly how to report the carryover on my current return. I'm still shocked it worked - saved me from taking a day off work to visit the local IRS office.
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Ethan Moore
Something else to consider - if your losses were substantial, you might want to talk to a tax professional before filing. I tried to handle my losses from crypto mining equipment myself and messed up how I categorized them (capital vs. ordinary losses). Ended up having to file an amended return anyway.
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Diego Chavez
•Do you know if there's a dollar threshold where getting professional help makes more sense? My losses were around $8,500 total across those two years. Not sure if that's enough to justify paying for professional help or if I should just attempt to handle it myself with tax software.
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Ethan Moore
•There's no specific dollar threshold that makes professional help necessary - it really depends on the complexity of your situation more than the amount. For $8,500 in straightforward capital losses from typical investments or crypto trading, tax software should handle it fine. The time you'd want professional help is when you have unusual situations like crypto mining equipment (which might be Section 179 property rather than capital assets), business investments, or complicated basis calculations. If you're just dealing with losses from buying and selling investments, the standard tax software options should guide you through it correctly.
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Yuki Nakamura
I've been carrying forward capital losses for years and an important tip is to KEEP DETAILED RECORDS of all your previous tax returns. The IRS randomly decided to question my loss carryforward in 2023 and I had to provide proof from returns going back to 2019. Was a total nightmare trying to find all those documents.
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StarSurfer
•Any recommendations for good ways to organize tax documents? I'm terrible at keeping track of paperwork and now I'm worried about this exact scenario.
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Anna Kerber
•I use a simple digital filing system - scan or photograph all tax documents and store them in folders by year (like "2021 Tax Docs", "2022 Tax Docs", etc.). I keep both the originals in a physical file and digital copies in cloud storage like Google Drive or Dropbox. For capital losses specifically, I also maintain a separate spreadsheet tracking my carryforward amounts year by year so I don't have to dig through old returns to remember what I'm carrying forward. Takes about 10 minutes after I file each year but saves hours if the IRS ever comes asking questions.
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Zara Khan
One thing I'd add to the excellent advice already given - make sure you understand the "wash sale" rules before filing those back returns. If you sold crypto or stocks at a loss and then bought the same or "substantially identical" securities within 30 days before or after the sale, the IRS considers it a wash sale and you can't claim the loss immediately. This is especially tricky with crypto since many people were buying/selling frequently during those volatile periods in 2021-2022. The wash sale rules can significantly reduce your claimable losses, so it's worth double-checking your transaction history before you file. Some of the tax software mentioned earlier should catch this automatically, but it's good to be aware of the rule going in.
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