How Does a K-1 Loss Affect My Taxes? (2026 Guide)

A K-1 loss is your share of a partnership’s or S corporation’s loss, and it can lower your taxable income, but only after you clear a few IRS rules. If your role is passive, which is true for most doctors and dentists I talk to, that loss offsets passive income like rental income or the profit from another syndication.

If you materially participate, it can offset active income like your W-2 wages. And any loss you can’t use this year doesn’t vanish. It carries forward to future years until you can.

Now let me back up, because the first time I got a Schedule K-1 with a big loss sitting on it, I about fell out of my chair (not my dental chair 🙂 ).

Yes, I’m a dentist. For most of my career, the only tax form I thought about was my W-2, so when one of my first real estate syndications sent me a K-1 showing a five-figure loss on an investment that was actually paying me, I figured something had gone wrong. It hadn’t. My CPA walked me through it, and that conversation changed how I think about taxes to this day.

These days I sit on both sides of that form. I still receive K-1s as a passive investor, and through my own mobile home park deals, I help issue them too. So let me save you the heart attack I had and explain what’s really going on.

Rather watch than read? Check out this video:

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What Is a Schedule K-1 Form?

A Schedule K-1 is the tax form that pass-through entities use to report your slice of the action. Partnerships, S corporations, and certain trusts don’t pay tax at the entity level. Instead, they pass their income, deductions, credits, and losses through to the individual partners and shareholders, and the K-1 is how they tell you, and the IRS, what your share was.

Partnerships file Form 1065 and send out a K-1 to each partner. S corporations file Form 1120-S and send a K-1 to each shareholder. For a calendar year entity, those forms are due to you by March 15th, though plenty of real estate deals file an extension and get them to you closer to September 15th. When you get yours, the loss flows onto Schedule E of your personal income tax return, which is Part II of your Form 1040.

So that’s the overview, and the interesting part is why a loss can be good news.

Why a K-1 Loss Is Often a Good Thing

Here’s the part nobody teaches you in school. A loss on a real estate K-1 usually isn’t a real loss of your money. It’s a paper loss, and most of it comes from depreciation.

When a syndication buys an apartment complex or a mobile home park, the IRS lets it write down the value of the buildings and equipment over time. That write down is a deduction, but it isn’t cash leaving anyone’s pocket.

So the deal can mail you a check from its rental income and still report a loss on your K-1 in the same year. Your K-1 income shows red ink while your bank account shows green. That, my friend, is the quiet magic that wealthy investors have used for decades.

The 2026 Update That Makes This Bigger

This got a lot more powerful recently, so if you’re reading an older article on K-1 losses, throw it out.

The One Big Beautiful Bill Act, signed into law on July 4, 2025, permanently restored 100% bonus depreciation. It applies to qualifying property acquired and placed in service after January 19, 2025. For the three years before that, bonus depreciation had been shrinking, and it sat at just 40% in 2025 before the new law and was scheduled to hit zero by 2027. That phase down is now gone for good.

Why should a busy physician or dentist care? Because bonus depreciation is what lets a deal front load those paper losses into year one. Pair it with a cost segregation study, which breaks a property into pieces that depreciate fast, and the first-year loss on your K-1 can be a big one.

A Real World Example

Say you invest $100,000 as a limited partner in a real estate syndication. The sponsor runs a cost segregation study and applies 100% bonus depreciation. It wouldn’t be unusual for your year one K-1 to show a passive loss of $50,000 or more, even while the deal cash flows and sends you distributions.

That loss is now sitting there ready to offset passive income. We’ll talk about exactly which income in a second, because this is where most people get tripped up.

Passive or Active: The Question That Decides Everything

Whether you can actually use that loss comes down to one word: participation.

Passive Activity Loss Limitations

Most K-1 losses fall under the passive activity loss rules. In plain English, if you don’t materially participate in the business, your loss is passive, and a passive loss can only offset passive income.

If you’re a limited partner in a fund and you don’t run the day to day operations, you’re almost certainly passive. The losses you can’t use get suspended and carried forward to future years.

Material Participation and Active Losses

If you materially participate, often measured by spending 500 or more hours a year in the activity, your share can be treated as active. Active losses can offset active income like your wages.

This is the difference between a limited partner and a general partner, and it matters a great deal at tax time.

Can a K-1 Loss Offset Your W-2 Income?

This is the question every high earner really wants answered, so let me be straight with you. In most cases, no. A passive K-1 loss can’t offset your W-2 income from your practice, because your clinical income is active and your investment loss is passive. The IRS keeps those two buckets walled off from each other.

There are a few doors out of that wall, though. If you or your spouse qualify as a real estate professional under the IRS tests, your rental losses can become non passive and reach your active income.

A full-time clinician rarely clears that bar, but a non-working spouse sometimes can, and that opens up real planning.

There’s also the short-term rental approach, where properties with an average guest stay of seven days or less aren’t treated as standard rentals, so material participation can make those losses non-passive. These strategies have real rules and real paperwork, so this is exactly where a good tax advisor earns their fee.

The Three Limits That Can Cap Your Deduction

Even when a loss is the right type, three limits decide how much you can actually take this year.

Basis Limitations

You can’t deduct more loss than your tax basis in the deal. Your basis, sometimes called outside basis, is roughly what you put in, adjusted for your share of income, losses, and cash distributions. One nice wrinkle for real estate partners is that your share of the partnership’s debt can add to your basis, which is part of why leveraged real estate often gives you plenty of room to absorb a big loss.

At-Risk Limitations

The at-risk rules limit your loss to the amount you actually have on the line. The good news for real estate is that qualified nonrecourse financing generally counts as at-risk, so this trips up fewer investors than you’d think.

Passive Activity Loss Limitations

And of course the passive rules we covered above, which suspend anything beyond your passive income for the year.

Where Your K-1 Loss Can and Can’t Go

Here’s the cheat sheet I wish someone had handed me on day one.

Type of Income	Can a Passive K-1 Loss Offset It?	Why
Passive income (another syndication or rental income)	Yes	It’s the same passive bucket under the IRS rules
Your W-2 income from the practice	Usually no	Clinical income is active, so a passive loss can’t touch it unless you or your spouse qualify as a real estate professional
Gain when a passive deal sells	Yes	The gain is passive, so your suspended losses finally get freed up
Capital gains from stocks or mutual funds	No	That’s portfolio income, a separate bucket the rules keep walled off
Self-employment income	Usually no	The same active versus passive wall applies

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What Happens to Losses You Can’t Use This Year

This is the relief most investors need to hear. A suspended passive loss isn’t gone. It carries forward year after year, waiting in line. The day you have passive income to soak it up, it goes to work.

And when you sell that passive investment, the gain is passive, so the suspended losses you’ve been stacking up finally get released against it. Many investors quietly build a pile of these losses and cash them in at sale.

K-1 Losses and Self-Employment Tax

One quick note for the general partners reading this. If you’re a general partner who materially participates, your share of ordinary business income or loss can be subject to self-employment tax.

Most limited partners and most rental income avoid that extra tax. It’s a small detail, but it’s the kind of thing worth raising with your accountant if you wear both hats.

A Few Things to Watch

Get the numbers from your K-1 onto the right lines, because sloppy entries invite IRS attention. Keep records of what you invested, how involved you were, and your distributions, since that’s what supports your basis and protects you in an audit.

And remember that tax law keeps moving, as the 2026 bonus depreciation change shows, so it pays to work with a CPA who specializes in real estate rather than a generalist.

The Bottom Line

A K-1 loss looks scary the first time you see one, but for a passive real estate investor it’s often the opposite of bad news. It’s usually a paper loss from depreciation on an asset that’s quietly paying you, and with 100% bonus depreciation back for good, those first year losses are bigger than they’ve been in years.

The rules decide whether you use that loss now or later. Passive losses meet passive income, suspended losses wait their turn, and they get freed up when the deal sells. Know which bucket you’re in and you can plan around it instead of being surprised by it.

This is a big part of how the doctors I work with keep more of what their money earns while building income that doesn’t depend on their hands. If you want to see the kinds of deals that generate these K-1s and learn the strategy alongside other high-earning professionals, come join us in the Passive Investors Circle.

This is not financial or tax advice. Always consult your own financial advisor or CPA before making any investment decisions.

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