“With a 100% K-1 loss on a passive investment, can I write it off 100% if I have the same amount in capital gains from stocks or a windfall from a deal that did go well?”
Can a K-1 passive loss offset a capital gain? It’s one of the most common — and most expensive — misunderstandings in investor tax planning. The instinct is that a loss is a loss and a gain is a gain, so they should cancel out. The tax code doesn’t see it that way.
Quick answer: No. A passive loss (like a K-1 loss) can only offset passive income — not capital gains from stocks or a one-time windfall. The loss carries forward until you have passive income to absorb it. The danger: unused passive losses can disappear when the taxpayer dies, so use them up while you’re alive.
The headline rule: a passive loss cannot offset anything other than passive income. A K-1 loss from a passive investment won’t wipe out capital gains from stocks or a windfall from a deal that went well — those aren’t passive income. (And note: most passive income is taxed at ordinary rates anyway, not a special low rate, unless it’s qualified dividends.)
Say you had a passive investment that generated a $1 million passive loss three years ago that you couldn’t use. You carry it forward. Then in 2025 or 2026 you sell a property and have $700,000 of passive income coming in. Now that carried-forward passive loss can offset that passive income. But until passive income actually hits your return, the loss just waits.
Here’s the part that costs families real money. Suspended passive losses are tied to the taxpayer’s Social Security number. When someone passes away with large unused passive losses, those losses can disappear with them. Meanwhile the estate or beneficiaries may later realize gains — with no loss left to offset them.
If you’re sitting on a large passive-loss carryforward, ask whether it’s really worth letting it ride for years. Consider doing deals or stepping into investments that generate the passive income to absorb those losses before they expire or vanish. The goal is to use as much of your passive losses as possible while they’re still yours to use.
Official IRS reference: IRS — Topic No. 425, Passive Activities – Losses and Credits
No. Passive losses can only offset passive income. Stock capital gains are not passive income, so the K-1 loss won’t offset them.
It carries forward until you have passive income to absorb it. There’s no expiration date while you’re alive, but it must wait for passive income.
Yes. Suspended passive losses are tied to the taxpayer and can disappear when they pass away, which is why it’s often better to use them up sooner.
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Disclaimer: This article is for educational purposes only and is not tax, legal, or financial advice. Every situation is different — talk to a qualified professional about your specific facts before making any decisions.