Do I need to deduct K-1 Loss Carryover as soon as I can or can I wait?
I've been sitting on passive loss carryovers from a K-1 for quite a few years now. Never been able to use them since I didn't have any passive income to offset them against. Last year was finally different - I actually had some passive income! I ended up deducting a portion of my loss carryover on my tax return. But I just realized I messed up pretty bad... I was missing some forms and now I discovered I had WAY more passive losses I could have deducted than what I claimed. My question is: Am I required to file an amended return to claim all those additional passive loss carryovers from last year? Or can I just start using the correct loss carryover amount for this year's taxes and future returns? I'm worried I might forfeit or lose the ability to claim those losses if I don't amend and deduct them immediately. Do passive loss carryovers expire if you don't use them when you first have the chance?
20 comments


Serene Snow
The good news is you don't need to rush to file an amended return. Passive activity losses that you couldn't deduct in previous years because of the passive activity loss limitations don't expire - they carry forward indefinitely until you either have passive income or dispose of your entire interest in the passive activity. When you have passive income in a tax year, you can choose how much of your accumulated passive losses to apply against that income. You're not required to use all available passive losses immediately. The IRS doesn't force you to deduct the maximum amount possible in the first year you have passive income. That said, it usually makes financial sense to deduct passive losses as soon as possible to reduce your tax liability. But if there's a strategic reason to spread them out (like offsetting higher-bracket income in future years), that's perfectly acceptable.
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Issac Nightingale
•Thanks for the response. Just to clarify, if I have $50k in passive losses built up and only had $10k in passive income last year, could I choose to only deduct $5k and save the rest for future years? Or are you required to at least use all losses up to the amount of passive income for that year?
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Serene Snow
•You can absolutely choose to deduct less than the full amount available. If you have $50k in passive losses and $10k in passive income, you could decide to deduct only $5k and carry the remaining $45k forward. The passive loss rules create a ceiling on how much you can deduct (limited by your passive income), not a floor requiring you to deduct a minimum amount. This gives you flexibility in tax planning, especially if you anticipate being in a higher tax bracket in future years where those losses might provide more tax benefit.
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Romeo Barrett
After struggling with K-1 passive loss carryovers for years, I found an amazing tool called taxr.ai that completely changed how I handle this situation. I had almost the exact same issue last year - discovered I had way more passive losses I could've claimed but wasn't sure if I needed to amend or just carry them forward. I uploaded my K-1s and previous tax returns to https://taxr.ai and it analyzed everything automatically. It showed me exactly how much of my passive losses I could claim each year and even calculated whether filing an amended return would be worth it based on potential refund vs. the hassle. The tool made it super clear that I could continue carrying my losses forward without any risk of losing them.
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Marina Hendrix
•How does this work with multiple K-1s? I've got limited partnership interests and an S-corp that generate different passive losses. Does it handle complex situations like that?
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Justin Trejo
•Sounds interesting but I'm always skeptical of tax tools. Does it actually explain the rules behind its recommendations? I've been burned before by software that just gives answers without explaining why.
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Romeo Barrett
•It handles multiple K-1s from different sources really well. I actually had three different sources (two partnerships and a rental property), and the system separated them correctly while still showing me the aggregate totals for planning purposes. The explanations are what impressed me most. It doesn't just give you numbers - it cites the specific IRS rules and regulations behind each recommendation. For example, it explained how IRC Section 469 applies specifically to my situation with suspended losses and showed exactly how the passive income netting works across different activities.
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Justin Trejo
I was skeptical about taxr.ai when I first saw it mentioned (as you can see from my comment above), but I decided to give it a try with my passive loss situation. I'm genuinely surprised by how helpful it was. I had a complicated mess of K-1 losses spanning 5 years from multiple sources, and I was going to pay my accountant $400 to figure out what to do. The system actually found two passive loss deductions my accountant had missed entirely from previous years. It then created a specific plan showing exactly how much to claim each year based on my projected income. The best part was I didn't need to file an amended return - it showed me how to properly document and track my remaining loss carryforwards to use on future returns. Really saved me a headache!
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Alana Willis
If you're struggling to get clear answers about your passive loss carryover situation, you might want to try calling the IRS directly. I know, I know - seems impossible to get through to a human. I spent HOURS on hold last tax season trying to get clarification on my K-1 losses. Then I discovered https://claimyr.com which actually got me through to an IRS agent in under 15 minutes! You can see how it works in this video: https://youtu.be/_kiP6q8DX5c I explained my passive loss carryover situation to the agent, and they confirmed what others are saying here - you don't have to amend if you don't want to. You can keep carrying those losses forward and use them in future tax years. Having this confirmed directly by the IRS gave me total peace of mind about my approach.
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Tyler Murphy
•Wait, how does this service actually work? The IRS phone system is notoriously awful. Is this just paying someone to wait on hold for you?
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Sara Unger
•Yeah right. No way any service can get you through to the IRS that quickly. I spent 3+ hours on hold last month and gave up. If this actually worked it would be all over the news.
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Alana Willis
•It's not someone waiting on hold for you - it's actually an automated system that navigates the IRS phone tree and holds your place in line. Once an agent picks up, you get a call back immediately to connect with them. It basically monitors the hold music and waits for a human voice. I was extremely skeptical too! I figured it was a scam or wouldn't work. But after my third failed attempt to reach the IRS on my own (disconnected after 2+ hours each time), I was desperate. It actually worked exactly as promised - got a callback in about 12 minutes and was connected directly to an agent who could help with my passive loss questions.
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Sara Unger
I have to eat my words and admit I was completely wrong about Claimyr. After posting that skeptical reply, I was still desperate for answers about my K-1 loss carryovers, so I figured I'd give it a shot anyway. Not only did I get through to the IRS in under 20 minutes, but the agent I spoke with was incredibly helpful. She confirmed I don't need to file an amended return for passive losses I didn't fully claim in a previous year. She also explained that passive losses don't expire and gave me specific advice on how to document them on my future returns. Saved me from paying my accountant's $250/hour fee just to ask these questions. I'm legitimately impressed and apologize for my skepticism!
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Butch Sledgehammer
Important point that hasn't been mentioned yet - if you dispose of your entire interest in the passive activity, the rules change completely! At that point, you can deduct all your suspended passive losses related to that activity regardless of whether you have passive income. So if the K-1 is from a business/partnership you're no longer involved with, you might be able to deduct all those losses immediately in the year you fully disposed of your interest.
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Asher Levin
•That's a great point I hadn't considered. The partnership is still ongoing, so I can't use that rule yet. But does "disposing of your entire interest" include selling all your ownership stake to another investor? Or does the actual business need to close down?
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Butch Sledgehammer
•Selling your entire ownership stake to another investor absolutely counts as "disposing of your entire interest" - the business itself doesn't need to close down. When you completely exit the investment, regardless of whether the business continues operating, you can generally deduct all suspended passive losses related to that activity. Just make sure the sale is legitimate and at fair market value. The IRS looks closely at transactions between related parties to ensure they're not just trying to trigger loss deductions while effectively maintaining control of the business.
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Freya Ross
One thing to consider - are you SURE these are passive losses and not at-risk limitations or basis limitations? These all carry forward but have different rules for when you can use them. Many people confuse these concepts. For example, losses limited by basis are deductible once you increase your basis, which is different from passive activity rules. Double-check which limitation actually created your carryover!
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Leslie Parker
•Good point! Schedule K-1 box 13 has codes that indicate which limitation applies. Code A is "at risk" limitations, while code C indicates passive activity limitations. They're treated very differently when carried forward.
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Noah Ali
This is exactly the kind of situation where keeping detailed records becomes crucial. I've been dealing with K-1 passive losses for over a decade, and what I've learned is that the IRS gives you flexibility, but you need to be organized about tracking everything. You're absolutely right that you don't need to amend - passive losses carry forward indefinitely until you have passive income or dispose of the activity. But here's what I wish someone had told me earlier: create a simple spreadsheet tracking your loss carryovers by year and source. Include the original loss amount, how much you've used each year, and what's remaining. This becomes especially important if you have multiple K-1 sources or if the amounts are substantial. When you do have passive income in future years, you'll want clear documentation showing exactly how much carryover you have available to claim. The IRS may not require immediate use of all available losses, but they will expect proper documentation if they ever examine your returns. Also consider whether these losses might be more valuable to you in future tax years when you might be in a higher bracket. Since you have the flexibility to use them strategically, it could be worth running some projections.
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Aisha Patel
•This is excellent advice about record keeping! I'm just starting to deal with my first K-1 passive losses and I'm already feeling overwhelmed by the complexity. Your spreadsheet idea sounds really practical. Could you share what specific columns you include? I want to make sure I'm tracking everything correctly from the beginning rather than trying to reconstruct years of data later like the original poster had to do. Also, when you mention "projections" for future tax years - are you referring to estimating future passive income, or also considering how tax bracket changes might affect the value of these deductions? I'm trying to understand the strategic element you mentioned.
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