IRC 465 At-Risk Rules: Partnership and S-Corp Loss Limitations, Qualified Nonrecourse Financing, and Form 6198 Practitioner Guide

IRC 465 is the at-risk limitation that forms the second layer of the federal pass-through loss limitation stack. Congress enacted it in response to tax shelter arrangements in which taxpayers claimed losses on amounts they could never actually lose, principally through nonrecourse financing. The at-risk rule requires that before a taxpayer may deduct a loss from an activity, they must have genuine economic exposure to lose that amount if the activity fails.

This guide is written for enrolled agents, CPAs, and tax attorneys who prepare Schedule E returns with pass-through losses, advise partnership or S-corp owners on loss planning, or need a precise reference for IRC 465 mechanics. All statutory citations, regulatory references (including Reg. 1.465-1 et seq.), and IRS guidance must be verified against the current Code and current IRS.gov resources before reliance in any specific client matter. This guide is for informational purposes only and does not constitute legal or tax advice.

Section 1: What Does "At Risk" Mean? (IRC 465(b))

A taxpayer is "at risk" for an activity to the extent they could actually lose the invested amount if the activity fails. The statute defines what is included and excluded. The core principle is economic reality: at-risk status attaches only to amounts where the taxpayer bears the ultimate economic burden of loss.

Amounts Included in the At-Risk Amount (IRC 465(b)(1))

Under IRC 465(b)(1), a taxpayer is at risk for an activity to the extent of:

• The amount of cash contributed to the activity by the taxpayer.
• The adjusted basis of other property contributed to the activity by the taxpayer.
• Amounts borrowed for use in the activity for which the taxpayer is personally liable (recourse debt), including a partner's share of partnership recourse liabilities where the partner bears the economic risk of loss.
• Qualified nonrecourse financing for real property activities, under the special exception in IRC 465(b)(6), covered in Section 5 of this guide.

The Economic Risk of Loss Standard

The underlying standard throughout IRC 465(b) is whether the taxpayer would actually suffer economic loss if the activity generated no return. Cash contributed out of pocket clearly meets this standard. Recourse debt for which the taxpayer has no protection against loss also meets this standard. The analysis becomes fact-specific for guarantees, protected arrangements, and financing structures where ultimate economic risk may shift away from the taxpayer despite nominal liability.

Practitioners should verify the at-risk status of each component of the owner's investment separately. An investment may include some portions that are at risk (cash) and other portions that are not at risk (protected financing). Only the qualifying amounts count toward the at-risk limitation.

Section 2: Amounts NOT At Risk (IRC 465(b)(3))

A taxpayer is not at risk for an amount even if otherwise personally liable if the taxpayer is protected against loss through certain arrangements. IRC 465(b)(3) specifies the principal categories.

Stop-Loss Agreements and Similar Protections

Amounts for which the taxpayer has stop-loss agreements, guarantees by third parties, or similar arrangements that limit the taxpayer's actual economic exposure do not count as at-risk. The presence of personal liability on a note is not sufficient if a parallel arrangement means the taxpayer would be made whole if the activity failed. The economic reality test controls, not the legal form.

Borrowed Amounts From Interested or Related Persons (IRC 465(b)(3)(A))

Under IRC 465(b)(3)(A), a taxpayer is not at risk for amounts borrowed from persons who have an interest in the activity or from persons related to such persons. The rationale is that if the ultimate risk of loss circles back to a person with an interest in the activity or a related party, the taxpayer has not truly borne the economic risk.

A person "has an interest in the activity" for these purposes if they share in the profits or have a financial stake in the activity's performance. The scope of the related party definition must be confirmed against the applicable IRC provisions and current IRS.gov guidance; the category is broader than it may appear from the face of the statute.

The Guarantee Trap

One of the most common practitioner errors involves guarantee arrangements. A taxpayer who personally guarantees an entity's debt may appear to have recourse exposure. But if the guarantee is structured in a way that shifts economic risk back to the lender, a related party, or the entity itself, the guarantee does not create at-risk basis. Circumstances where this trap applies include:

• The lender has also taken a pledge of other assets sufficient to make the lender whole, so the guarantor would never actually be called upon.
• The guarantor has a contractual right of reimbursement from the entity, another guarantor, or a related party that eliminates the economic risk.
• The arrangement was structured to produce the appearance of recourse while ensuring the taxpayer would not ultimately bear the loss.

Hedge all guarantee analysis to IRC 465(b) and current IRS.gov guidance. The question is always whether the taxpayer is the true ultimate risk bearer.

Section 3: The Critical Distinction -- Outside Basis vs. At-Risk Amount

This is the most important practical point in IRC 465 analysis for pass-through entity owners. Many practitioners conflate a partner's outside basis with the at-risk amount. They are separate computations, governed by different Code sections, and they can produce very different results for the same taxpayer in the same year.

What Outside Basis Includes (IRC 705 and IRC 752)

A partner's outside basis under IRC 705 includes the partner's share of all partnership liabilities allocated under IRC 752. This includes both recourse liabilities (allocated to the partner who bears the economic risk of loss) and nonrecourse liabilities (allocated to all partners under the nonrecourse liability allocation rules in the regulations). A partner with a large share of partnership nonrecourse debt has a correspondingly large outside basis from that debt allocation.

Outside basis under IRC 705 sets the maximum loss that can be deducted at Layer 1 (the basis limitation). If the partner has $200,000 of outside basis, including $180,000 from allocated nonrecourse debt, the partner can absorb up to $200,000 of pass-through losses at Layer 1.

What At-Risk Amount Excludes

The at-risk amount under IRC 465 does NOT include the partner's share of nonrecourse debt, with one exception: qualified nonrecourse financing for real property activities (IRC 465(b)(6), covered in Section 5). That same $180,000 of allocated nonrecourse debt that contributed to outside basis contributes nothing to at-risk amount under IRC 465 for a non-real-property activity.

Result: the partner from the example above has $200,000 of outside basis at Layer 1, sufficient to absorb $200,000 of losses. But if the partner's only basis from economic investment is, say, $20,000 of cash plus the nonrecourse debt allocation, the partner's at-risk amount is $20,000 (setting aside the qualified nonrecourse financing exception). A pass-through loss of $100,000 passes Layer 1 (basis: $200,000) but only $20,000 is deductible at Layer 2; the remaining $80,000 is suspended on Form 6198.

S-Corp: A Parallel But Different Analysis

For S-corp shareholders, the interaction is different from partnerships but the critical distinction remains. An S-corp shareholder's basis under IRC 1366(d) includes amounts the shareholder directly invested (stock basis) and loans the shareholder made to the corporation (debt basis). Third-party bank debt borrowed by the S-corp does not create basis for the shareholder and does not create at-risk amount.

Under IRC 465(b)(2), an S-corp shareholder's at-risk amount includes amounts the shareholder contributed to the activity and recourse amounts the shareholder borrowed for use in the activity. This means the shareholder's direct loans to the corporation can be at risk, but third-party bank loans that the corporation (not the shareholder) borrowed are not at risk for the shareholder, even if the shareholder signed a personal guarantee, unless the guarantee analysis under IRC 465(b)(3) confirms no protection against loss. See Section 2 for the guarantee analysis.

Unlike partnerships (where IRC 752 allocates liabilities to partners and increases outside basis), an S-corp's third-party debt does not increase the shareholder's basis. So for S-corp shareholders, the Layer 1 and Layer 2 limitations often converge: neither outside basis nor at-risk amount includes S-corp bank debt. For a detailed treatment of S-corp and partnership basis computation at Layer 1, see the S-Corp and Partnership Basis Tracking Guide (Form 7203).

Section 4: Activity-by-Activity Computation

At-risk amounts and suspended losses are tracked per activity, not in the aggregate across a taxpayer's portfolio of pass-through interests. This rule has significant practical consequences for taxpayers with multiple partnerships or S-corp interests.

No Cross-Activity Netting

If a taxpayer has two activities -- one with a $50,000 suspended at-risk loss and another with $50,000 of income -- the income in Activity B does not free up the suspended loss in Activity A. Suspended at-risk losses from Activity A can only be freed up by increases in the at-risk amount of Activity A. The activities are walled off from each other for at-risk purposes.

Taxpayers with multiple pass-through interests must file a separate Form 6198 for each at-risk activity in which losses may be limited.

Defining an "Activity"

What constitutes a single activity for at-risk purposes is a facts-and-circumstances determination. In general, each partnership or S-corp interest is a separate activity. However, in certain circumstances, a taxpayer may elect to treat two or more activities as a single at-risk activity. The aggregation rules for at-risk purposes are governed by Reg. 1.465-3 and current IRS.gov guidance. Practitioners should hedge the specific aggregation rules to those authorities and confirm current guidance before making or reporting an aggregation election.

Important: the at-risk activity aggregation election under Reg. 1.465-3 is a separate election from the IRC 469 passive activity grouping election under Treas. Reg. 1.469-4. Making or not making one election does not determine the other. Practitioners handling clients with multiple pass-through activities should analyze both elections independently.

Practical Impact: One Form 6198 Per Activity

For a client with interests in three partnerships, three separate Form 6198 computations are required (assuming no aggregation election is in effect), one for each activity. The at-risk balance and any suspended loss carryforward must be maintained for each activity separately in the client's records and on the preparer's work papers. A single consolidated Form 6198 for all activities would be an error.

Section 5: Qualified Nonrecourse Financing -- The Real Estate Exception (IRC 465(b)(6))

Congress created a specific exception to the general rule that nonrecourse financing does not count as at-risk. For real property activities, "qualified nonrecourse financing" is treated as at-risk even though the taxpayer has no personal liability on the debt. This exception reflects the congressional judgment that commercially financed real estate presents genuine economic exposure even for nonrecourse borrowers.

What Is Qualified Nonrecourse Financing?

Under IRC 465(b)(6), qualified nonrecourse financing must satisfy all of the following:

• The financing is borrowed from a qualified person. A qualified person is generally a lender regularly and actively engaged in the business of lending money, and who is not the seller of the property, the taxpayer, or a person related to the taxpayer. Confirm the full definition of qualified person against IRC 465(b)(6)(B) and current IRS.gov guidance; the related-party rules require specific analysis.
• The financing is used to acquire real property held for the production of rental income. Personal use property does not qualify.
• The debt is not convertible debt. Financing that is convertible into an interest in the entity does not qualify.
• The financing is secured by the real property acquired with the proceeds.

All mechanics, including the full definition of "qualified person," the scope of the related-party restriction, and the application of this rule to tiered partnership structures, must be confirmed against IRC 465(b)(6) and current IRS.gov guidance before applying the exception to a specific client matter.

The Exception Is Limited to Real Property Activities

This is a critical limitation that practitioners sometimes overlook. The qualified nonrecourse financing exception under IRC 465(b)(6) applies only to the holding of real property. It does NOT apply to:

• Oil and gas activities
• Equipment leasing
• Farming activities
• Any other activity outside the real property holding category

For all activities other than real property holding, the baseline rule applies: nonrecourse financing does not count as at-risk, regardless of whether it is commercially sourced. Practitioners advising clients in oil and gas, equipment leasing, or other capital-intensive non-real-estate activities should not apply the qualified nonrecourse financing exception to those activities.

Impact on Partnership Real Estate Investors

For a partner in a real estate partnership that holds rental property and financed the acquisition with a commercial bank loan on a nonrecourse basis, the partner's share of that nonrecourse debt may qualify as at-risk under the IRC 465(b)(6) exception. This is a favorable result that aligns the at-risk amount more closely with the outside basis for real estate activities. The qualifying debt increases the partner's at-risk amount by the partner's allocable share of the qualified nonrecourse financing.

Note that the debt must be allocated to the partner under the partnership's nonrecourse liability allocation rules under IRC 752 before it can affect either basis or at-risk amount. The interaction of IRC 752 allocations, outside basis, and IRC 465(b)(6) at-risk treatment should be verified for each real estate partnership engagement. For partnership outside basis computation, see the IRC 705 and 752 Partnership Outside Basis Guide.

Section 6: Suspended Losses, Form 6198, and Carryforward (IRC 465(a))

When a loss from an activity exceeds the taxpayer's at-risk amount, the excess is not permanently disallowed. It is suspended and tracked for future use. The mechanism for tracking is Form 6198 (At-Risk Limitations), which is required whenever a loss may be limited under IRC 465 (IRC 465(a)).

How Suspension Works

In the year of suspension, the portion of the loss that exceeds the at-risk amount is disallowed on the return. The taxpayer deducts only up to the at-risk amount and the suspended balance is carried to Form 6198. The suspended loss carryforward is indefinite; there is no expiration under IRC 465. The loss remains suspended until the taxpayer's at-risk amount for that activity increases.

Events That Restore At-Risk Amount

The at-risk amount for an activity increases when:

• The taxpayer makes additional cash contributions to the activity.
• The activity generates income (income from the activity increases the at-risk amount, creating room to deduct previously suspended losses in the same or future years).
• The taxpayer takes on additional recourse debt for use in the activity for which the taxpayer bears genuine economic risk of loss.
• Additional qualified nonrecourse financing for a real property activity is obtained (increasing at-risk amount under IRC 465(b)(6)).

When the at-risk amount increases, any suspended loss carryforward from prior years becomes available for deduction in the current year, up to the amount of the at-risk restoration. The suspended loss deduction reduces the at-risk amount in the year it is taken.

Disposition of the Activity

When a taxpayer fully disposes of an at-risk activity, any remaining suspended at-risk loss becomes available. The ordering of the disposition is fact-specific and involves coordination with other loss limitation layers; hedge the disposition analysis to current IRC 465 guidance and IRS.gov. Practitioners handling the disposition of a partnership or S-corp interest should confirm whether suspended at-risk losses are available to offset gain recognized on the disposition or whether additional analysis is required.

Form 6198 Filing Requirements

Form 6198 must be filed in any year in which a loss may be limited under IRC 465, whether or not the loss is actually disallowed in that year. A separate Form 6198 is required for each at-risk activity. The form computes the at-risk amount at year-end, identifies the allowable loss, and captures the suspended carryforward balance. Confirm current form instructions and filing procedures at IRS.gov.

Section 7: Recapture When the At-Risk Amount Goes Below Zero (IRC 465(e))

IRC 465(e) addresses a scenario that can catch practitioners by surprise: after a taxpayer has deducted losses from an activity in prior years, events in a later year reduce the at-risk amount below zero. When that happens, the negative balance is recaptured as income.

When Does Recapture Occur?

The most common scenario is a conversion of recourse debt to nonrecourse debt. When recourse debt (which counts as at-risk) is replaced by nonrecourse debt (which generally does not count as at-risk, except for qualified nonrecourse financing), the at-risk amount decreases by the amount of the conversion. If prior losses were deducted that brought the at-risk amount to zero, the post-conversion at-risk amount will be negative.

Other events that can reduce the at-risk amount include: distributions from the activity that are not matched by current-year income, return of invested capital, and changes in the guarantor's exposure under an arrangement that reduces the at-risk amount.

Recapture Amount and Character

Under IRC 465(e)(1), the taxpayer must include in gross income the amount by which the at-risk amount is below zero at the end of the taxable year. The recaptured amount is treated as ordinary income in the year the at-risk balance goes negative. The recapture is the mechanism by which the previously deducted losses are clawed back.

The recaptured income is not a tax payment separate from the loss already deducted; it is an income item in the current year that offsets the earlier benefit. The previously suspended deduction (if any was restored by the recapture) is then available for use in future years when the at-risk amount is restored.

All specific mechanics, including the precise computation of the recapture amount, the character of the income, and the restoration of the suspended deduction, must be confirmed against IRC 465(e) and current IRS.gov guidance before applying the recapture rule to a specific client matter.

Monitoring for Recapture Events

Practitioners should monitor at-risk balances for clients who have deducted losses that brought the at-risk amount to or near zero. Any refinancing of entity debt, conversion of recourse to nonrecourse terms, or other changes in the nature of the financing used in an activity should be flagged for a recapture analysis under IRC 465(e). A client who refinances a real estate partnership's mortgage from a recourse construction loan to a nonrecourse permanent mortgage, for example, may face IRC 465(e) recapture analysis even if the partnership's underlying economics have not changed.

Section 8: Interaction With Layer 1 (Basis) and Layer 3 (Passive Activity)

IRC 465 sits between the basis limitation at Layer 1 and the passive activity limitation at Layer 3. The three layers operate sequentially, each as a distinct filter. A loss that fails at one layer never reaches the next.

The Sequential Order Is Fixed

Layer 1 (basis under IRC 704(d) for partnerships and IRC 1366(d) for S-corps) is tested first. A loss that exceeds the partner's or shareholder's basis is suspended at Layer 1 and never enters the at-risk or passive activity analysis. Only the portion of the loss that survives Layer 1 proceeds to Layer 2.

Layer 2 (at-risk under IRC 465) is tested second. The portion of the loss that survived Layer 1 is then compared to the at-risk amount. The amount deductible at Layer 2 is the lesser of the loss surviving Layer 1 and the taxpayer's at-risk amount. Any excess over the at-risk amount is suspended at Layer 2 on Form 6198.

Layer 3 (passive activity under IRC 469) is tested third, but only on the portion of the loss that survived both Layer 1 and Layer 2. A loss suspended at Layer 2 (at-risk) does not become a passive activity suspended loss. It is an at-risk suspended loss and carries forward under IRC 465, not under IRC 469.

Track Suspended Amounts at Each Layer Separately

A common error is to record a suspended loss as a "passive activity loss" when the loss was actually suspended at the at-risk layer. The two categories of suspended losses have different release mechanisms: at-risk suspended losses are released when the at-risk amount increases; passive activity suspended losses are released when the taxpayer generates passive income or disposes of the passive activity. Mixing the two produces the wrong result for the deductibility analysis in future years.

Work papers should clearly separate: Layer 1 suspended losses (excess of basis), Layer 2 suspended losses (tracked on Form 6198), and Layer 3 suspended losses (tracked under IRC 469). Each has its own carryforward and release rules.

Practical Example: Loss Suspended at Multiple Layers

A limited partner receives a $150,000 K-1 loss allocation. The partner's outside basis (Layer 1) is $120,000. The at-risk amount (Layer 2) is $40,000. The partner does not materially participate (Layer 3 is passive).

• Layer 1 check: $150,000 loss vs. $120,000 basis. $120,000 passes; $30,000 is suspended at Layer 1.
• Layer 2 check: $120,000 surviving loss vs. $40,000 at-risk amount. $40,000 passes; $80,000 is suspended at Layer 2 on Form 6198.
• Layer 3 check: $40,000 surviving loss vs. passive activity rules. If there is no passive income to absorb it, the $40,000 is further suspended at Layer 3 on Form 8582.

Result: $0 is deductible in the current year. The partner carries $30,000 suspended at Layer 1, $80,000 suspended at Layer 2, and $40,000 suspended at Layer 3, each with a different release mechanism. This example is illustrative; all layer computations must be applied to actual client facts under the applicable statutes.

For complete coverage of all five layers and their ordering, see the Loss Limitation Ordering Rules Guide. For the passive activity layer in detail, see the IRC 469 Passive Activity Loss Guide.

Frequently Asked Questions

Common questions from enrolled agents, CPAs, and tax attorneys on IRC 465 at-risk rules for pass-through entities.

Related Practitioner Guides

The following guides cover the other layers of the federal loss limitation stack and the underlying basis rules that feed into the IRC 465 at-risk analysis.

• Loss Limitation Ordering Rules Guide -- the hub guide that places IRC 465 in context as Layer 2 in the five-layer federal loss limitation stack, covering all five layers and their ordering rules in a single reference.
• IRC 705 and 752 Partnership Outside Basis Guide -- the Layer 1 computation for partnerships: how outside basis is determined under IRC 705, how partnership liabilities are allocated to partners under IRC 752, and how outside basis interacts with the at-risk analysis. This is the basis computation that must be completed before applying the IRC 465 Layer 2 test.
• S-Corp and Partnership Basis Tracking Guide (Form 7203) -- Layer 1 basis computation for S-corp shareholders on Form 7203, with treatment of stock basis, debt basis, and the order of adjustments that must be completed before applying the at-risk Layer 2 test to S-corp losses.
• IRC 469 Passive Activity Loss Guide -- Layer 3 in the stack, applied to losses that have already survived both the basis and at-risk tests; covers material participation, the passive activity grouping rules, real estate professional status, and the Form 8582 computation.
• IRC 461(l) Excess Business Loss Limitation Guide -- Layer 4 in the stack, applied to the aggregate business loss an individual may deduct in a single taxable year after surviving Layers 1 through 3; interacts with the at-risk rules for the same pass-through entity owner.
• Net Operating Loss Guide -- Layer 5 in the stack; losses surviving all four prior limitation layers become NOLs subject to the IRC 172 carryforward rules, the 80% taxable income limitation, and the IRC 382 ownership change rules.
• IRC 1366 and 1367: S-Corp Income Passthrough and Basis Adjustment -- the IRC 465 at-risk amount (Layer 2) is applied AFTER the IRC 1366(d) stock and debt basis limitation (Layer 1); at-risk rules govern a separate computation from basis, and a shareholder may have basis (stock or loan basis under IRC 1367) without having any corresponding at-risk amount if the loan proceeds are protected by nonrecourse financing or third-party guarantees on the underlying activity.
• IRC 752: Partnership Liability Allocation, Recourse vs. Nonrecourse, Bottom-Dollar Guarantees -- qualified nonrecourse financing under IRC 465(b)(6) is a subset of nonrecourse liabilities that is treated as at-risk for real estate partnerships; whether a loan qualifies as IRC 465 qualified nonrecourse financing turns on the lender-type and commercial reasonableness tests, and the result determines how the liability is allocated among partners under IRC 752 and whether it supports the at-risk amount that governs loss deductibility.
• IRC 702: Partnership Distributive Share and Separately Stated Items -- the at-risk amount under IRC 465 is computed using the partner's distributive share of income and loss as determined by IRC 702; IRC 702(c) explicitly provides that a partner's distributive share of the partnership's gross income is used to compute the partner's net earnings from self-employment, passive activity income, and any other computation that uses gross rather than net income -- which includes the denominator of certain at-risk limitation computations.

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