Can K-1 Losses Be Carried Forward? Limits and Release Triggers

Yes, K-1 losses can be carried forward, and the carryforward is indefinite. What trips most investors up is that a loss on your Schedule K-1 does not automatically land on your tax return. Before any partnership, S-corporation, or multi-member LLC loss becomes deductible, it has to pass up to four federal tests in a fixed order: basis, at-risk, passive activity, and the excess business loss cap. A loss that fails any one test is suspended at that step and carried to the next year, where it runs the same gauntlet again.

The Four Hurdles Every K-1 Loss Must Clear

The order is not optional. Whatever survives one test moves to the next, and a loss gets stuck at the first hurdle it cannot clear.¹ Where your loss is trapped determines how you eventually free it, so the sequence matters as much as the rules themselves.

Basis Limitation

Your basis is, roughly, what you have invested in the entity after adjusting for income, losses, and distributions over time. You cannot deduct more loss than your adjusted basis at year-end. For partnerships the authority is Section 704(d); for S-corporations, Section 1366(d).²³

If your K-1 shows a $50,000 loss but your basis is $30,000, only $30,000 moves to the next test. The remaining $20,000 waits, indefinitely, until your basis is restored through additional contributions or your share of future income.⁴ A common surprise: distributions reduce basis. If the entity paid cash out to you during the year, your basis may be lower than expected, and more of the loss suspended.

At-Risk Limitation

What clears basis then faces the at-risk rules under Section 465. Your at-risk amount is the money and property you contributed, plus debt for which you are personally on the hook.⁵

For many investors the at-risk figure tracks basis closely. The main difference is that at-risk excludes most nonrecourse debt, the kind where a lender can take collateral but cannot pursue you personally. Qualified nonrecourse financing secured by real property is the exception and still counts. So a nonrecourse mortgage on a real estate partnership building generally stays in your at-risk calculation; a nonrecourse loan in a non-real-estate venture does not. Any excess is suspended and released when your at-risk amount grows.

Passive Activity Loss Rules

Losses that survive both prior tests hit Section 469. Passive losses can offset only passive income. They cannot reduce wages, interest, dividends, or other nonpassive earnings.⁶

An activity is passive if you do not materially participate. The IRS provides seven material participation tests; the most common in practice is logging more than 500 hours in the activity during the year.¹ Contemporaneous time records are what you need to defend the position later.

Rental activities are treated as passive by default. Two exceptions matter. First, if you actively participate (a lower standard than material participation, satisfied by approving tenants, setting rent, and authorizing repairs), you can deduct up to $25,000 of passive rental losses against nonpassive income. That allowance phases out by $1 for every $2 of adjusted gross income over $100,000 and disappears at $150,000. Second, taxpayers who qualify as real estate professionals, meaning more than half of their total personal services and more than 750 hours are in real property businesses where they materially participate, are no longer subject to the automatic passive treatment for their rentals.⁶

One trap for K-1 investors: publicly traded partnerships. Section 469(k) treats each PTP as its own isolated silo. A loss from one PTP can only offset income from that same PTP, never another PTP or a private partnership. PTP losses tend to pile up separately, year after year, until the specific PTP generates income or you dispose of your entire interest in it.

Excess Business Loss Limitation

The last hurdle is Section 461(l), which caps the total business losses a noncorporate taxpayer can deduct in a single year. For 2025 the thresholds are $313,000 for single filers and $626,000 for joint filers, indexed annually.⁷⁸⁹ The excess business loss rule applies through 2028 under current law.

How Suspended K-1 Losses Get Released

A carried-forward loss waits for the specific condition that blocked it to change. The release trigger depends on which hurdle trapped it, and when a loss is freed from an earlier hurdle it still has to clear the remaining ones.

Rebuilding Basis or At-Risk

Losses suspended at the basis or at-risk level are released when the relevant account grows. The two usual ways: you contribute additional capital, or the entity earns income that gets allocated to you.⁴ A loss freed from basis still has to survive at-risk and passive rules before it reaches your return.

Earning Passive Income

Passive losses carried forward are absorbed automatically as you earn passive income in later years. Carry $10,000 forward, receive $4,000 of passive rental income next year, and $4,000 of the carryover offsets that income while $6,000 continues forward. The netting happens on Form 8582 every year.¹⁰ Some investors deliberately buy income-producing passive investments to soak up their accumulated losses, though the investment still has to make economic sense on its own.

Selling Your Entire Interest

The strongest release event is a complete, taxable sale of your entire interest in the passive activity to an unrelated buyer. All suspended passive losses tied to that activity are fully released and can offset any type of income, including wages and portfolio income.⁶ The released losses first offset any gain on the sale, then net income from your other passive activities, and finally nonpassive income. A sale to a related party does not trigger the release until that person later sells to an unrelated buyer.

This full-release rule covers passive-suspended losses only. Losses still stuck at the basis or at-risk level must be freed from those hurdles first. If you sell your entire interest while basis-limited losses remain, those losses are gone. You no longer own the interest that could ever generate future basis.

What Happens at Death

Suspended passive losses do not fully pass to heirs. They are allowed only to the extent they exceed the step-up in basis the heir receives. If the step-up wipes out the economic loss, the suspended passive losses vanish. In practice, a large share of accumulated passive losses is often lost at death, which is one reason some owners choose to sell a passive activity during life rather than hold it until the estate.

The S-Corporation Debt Basis Trap

The single largest reason K-1 losses get stuck at the first hurdle is a structural difference between partnerships and S-corporations. It changes which losses actually clear basis in any given year.

Partners generally include their share of the entity’s liabilities in outside basis. If the partnership borrows $1 million and you are a 25% partner, roughly $250,000 of that debt flows into your basis, and this holds even for qualified nonrecourse debt secured by real property. Partnership losses have a comparatively easy path through the basis test.¹¹

S-corporation shareholders get no such credit. Corporate debt does not add to your stock basis, even if you personally guarantee it. Only a direct loan from your own funds to the corporation creates separate “debt basis” that can absorb losses.¹² A guarantee alone is not a loan.³

For an S-corp shareholder with basis-suspended losses, the workaround is a genuine loan directly from you to the corporation, documented with a promissory note bearing a reasonable interest rate. Back-to-back arrangements (borrowing personally and then re-lending to the S-corp) can work, but the IRS scrutinizes them to confirm you bear real economic risk.

Tracking Your Carryforward

The IRS does not track your suspended losses. You do. Losing the records can make it nearly impossible to claim losses you are entitled to years later.¹²

Four forms carry the calculations from year to year:

Form 6198 calculates your at-risk amount for each activity and the resulting suspended loss under Section 465. The year-end carryover is your starting figure for next year.¹³
Form 8582 aggregates all passive income and losses and produces the net suspended passive carryover.¹⁰
Form 7203 is required for S-corporation shareholders claiming a loss, taking a non-dividend distribution, disposing of stock, or receiving a loan repayment. It documents your stock and debt basis.¹⁴
Form 461 tests your aggregate business losses against the excess business loss threshold and determines the amount converted to an NOL carryforward.⁸

The most critical task behind those forms is your own running basis calculation. For partnership interests, keep documentation of every contribution, distribution, income allocation, and loss allocation from the date you acquired the interest. For S-corporation stock, keep the same records plus documentation of any direct loans to the corporation. Reconstructing this history years later from incomplete records is what turns a routine audit into an expensive one.

Keep copies of every K-1, every limitation form, and every bank record showing contributions or distributions. If you change tax preparers, hand over the full carryforward history. A new preparer working from a single K-1 has no way to know what suspended losses are waiting behind it.

1
Internal Revenue Service. Publication 925 – Passive Activity and At-Risk Rules
2
Office of the Law Revision Counsel. 26 US Code 704 – Partners Distributive Share
3
Office of the Law Revision Counsel. 26 US Code 1366 – Pass-Thru of Items to Shareholders
4
Internal Revenue Service. New Limits on Partners Shares of Partnership Losses Frequently Asked Questions
5
Office of the Law Revision Counsel. 26 US Code 465 – Deductions Limited to Amount at Risk
6
Office of the Law Revision Counsel. 26 US Code 469 – Passive Activity Losses and Credits Limited
7
Internal Revenue Service. Revenue Procedure 2024-40
8
Internal Revenue Service. Instructions for Form 461
9
Office of the Law Revision Counsel. 26 US Code 172 – Net Operating Loss Deduction
10
Internal Revenue Service. Instructions for Form 8582 – Passive Activity Loss Limitations
11
Internal Revenue Service. Partners Outside Basis
12
Internal Revenue Service. S Corporation Stock and Debt Basis
13
Internal Revenue Service. Instructions for Form 6198
14
Internal Revenue Service. Instructions for Form 7203