What Section 465 does
Section 465 of the Internal Revenue Code limits deductible losses from a business or investment activity to the amount the taxpayer has at risk in that activity. You are at risk for: cash you invested, the fair market value of property you contributed, and recourse debt for which you are personally liable. If you invest $50,000 and borrow $200,000 on a recourse loan (you personally guarantee the debt), your at-risk amount is $250,000 — and losses up to that amount are potentially deductible (subject also to passive-activity rules). Losses exceeding your at-risk amount are suspended until you increase your at-risk basis.
The concern for real estate: most income-producing real estate is financed with non-recourse debt — the lender can foreclose on the property but cannot come after you personally. Under general at-risk rules, non-recourse debt does NOT count as at risk, which would dramatically limit deductible losses for most leveraged investors.
The qualified non-recourse financing exception
Congress created a critical exception in Section 465(b)(6): qualified non-recourse financing for real property counts as at risk. To qualify, the loan must: (1) be secured by real property used in the activity; (2) be borrowed from a qualified person — a commercial lender acting at arm's length (bank, S&L, insurance company, pension fund), not the seller, promoter, or a related party; (3) no person is personally liable for repayment other than through the real property collateral.
A standard commercial mortgage from a bank — even a non-recourse one — satisfies all three conditions. This is why the at-risk rules are rarely a binding constraint for investors using conventional bank financing.
When the at-risk rules do bite
The at-risk rules become a real obstacle when financing comes from a seller, a related party, or a promoter — situations where the economic risk is different from a conventional bank loan. Non-recourse seller financing, credit-enhanced debt structures where a third party guarantees repayment, or equity contributions with guaranteed returns can all fail the qualified non-recourse exception, leaving those amounts off the at-risk base and suspending losses. Always analyze both the at-risk rules and the passive activity rules when evaluating a leveraged real estate investment.
How the at-risk limitation is computed on Form 6198
The at-risk limitation is reported on Form 6198, filed with your return for each activity that could be limited. The form reconciles your at-risk amount at the start of the year, adds amounts that increase it (additional cash or property contributed, additional recourse or qualified non-recourse debt, and income from the activity), and subtracts amounts that decrease it (distributions, cash withdrawn, and debt converted from recourse to non-recourse). The result is your at-risk amount at year end.
A loss is deductible only up to that at-risk amount, and only after it clears Form 6198 does it move on to the passive-activity screening on Form 8582. The ordering matters: at-risk first, then passive. A loss can survive the at-risk test and still be suspended as passive, or clear the passive test yet be capped by at-risk.
A worked example of a suspended and released loss
You invest $30,000 cash in a rental venture financed with $120,000 of seller carryback financing that does not qualify as qualified non-recourse financing (the seller is the lender). Your at-risk amount is only the $30,000 of cash — the seller debt does not count. In year one the activity throws off a $45,000 tax loss.
Only $30,000 of that loss is allowed by the at-risk rules; the remaining $15,000 is suspended and carried forward. If in year two you contribute another $20,000 of cash (or replace the seller note with a qualifying bank loan), your at-risk amount rises and the suspended $15,000 is released — subject then to the passive-activity rules. Suspended at-risk losses are never lost; they wait until you restore at-risk basis.
What happens to suspended at-risk losses when you sell
Selling the activity in a fully taxable transaction generally frees up at-risk-suspended losses, because the disposition itself increases the amount you are treated as having at risk (through the gain recognized). This mirrors — but is separate from — the way a fully taxable disposition releases suspended passive losses under Section 469(g).
The practical takeaway: a suspended at-risk loss is not a permanent loss. It is deferred until you either restore at-risk basis or dispose of the activity. Track suspended amounts on Form 6198 each year so you can claim them when the gate opens.
Recourse vs. non-recourse: why the distinction drives everything
The entire at-risk analysis turns on who bears the economic loss if the venture fails. Recourse debt — where you have signed a personal guarantee and a lender can pursue your other assets — always counts as at risk, because you can genuinely lose that money. Pure non-recourse debt normally does not count, because the lender's only remedy is the collateral.
Real estate gets the special Section 465(b)(6) carve-out precisely because so much of it is financed with non-recourse debt from institutional lenders at arm's length. That carve-out applies to real property activities; it does not extend to non-real-estate ventures, where non-recourse borrowing generally stays outside the at-risk base. If you personally guarantee a mortgage, that debt is recourse and at risk regardless of the qualified non-recourse rules.
Common mistakes and planning tips
Assuming all mortgage debt is at risk. It isn't automatically — only recourse debt and qualified non-recourse financing count. Seller financing, related-party loans, and guaranteed-return arrangements can fall outside the base.
Confusing the at-risk and passive rules. They are two separate gates applied in sequence (Form 6198 then Form 8582). Clearing one does not clear the other.
Letting distributions quietly reduce at-risk basis. Cash you pull out of the activity lowers your at-risk amount and can push otherwise-deductible losses into suspension.
Forgetting that guarantees can help — or hurt. Personally guaranteeing a loan converts it to recourse and raises your at-risk amount, but it also puts your other assets on the line. Weigh the tax benefit against the real economic exposure.
Not tracking suspended losses. File Form 6198 every year an activity is limited so carryforwards are documented and available when your at-risk amount recovers or you sell.
At-risk rules in partnerships, LLCs, and S corporations
The at-risk rules are applied at the owner level, not the entity level. A partner in a real estate partnership or a member of a multi-member LLC includes their share of the entity's qualified non-recourse financing in their at-risk amount — a special rule for real property that does not extend to most other non-recourse debt passed through an entity. This is why a limited partner in a real estate deal can often deduct losses funded by the partnership's institutional mortgage.
For an S corporation shareholder, the analysis is tighter: entity-level debt generally does not give a shareholder at-risk (or basis) unless the shareholder is directly liable on the loan. This is a well-known trap — S corporation shareholders frequently cannot deduct losses funded by corporate borrowing because they lack both stock/debt basis and an at-risk amount. Choice of entity therefore affects not just liability and self-employment tax but whether leveraged losses are currently deductible.
In every case, run the loss through the entity's basis limitation first, then the at-risk limitation (Form 6198), then the passive-activity limitation (Form 8582). Three separate gates, in that order.
Interaction with the excess business loss limitation
Even a loss that clears the at-risk and passive gates can be capped again by the excess business loss limitation under Section 461(l). For a taxpayer who materially participates (for example, a real estate professional whose rental losses are non-passive), aggregate business losses in excess of an annually indexed threshold are disallowed for the year and carried forward as a net operating loss.
The sequence for a leveraged, actively managed real estate loss can therefore be four layers deep: basis, at-risk, passive activity, and finally the excess business loss cap. Each is a separate calculation on its own form. Understanding which gate is actually stopping a loss tells you what to fix — contributing capital or adding recourse debt solves an at-risk problem but does nothing for a passive-activity or excess-business-loss problem.
Frequently asked questions
Do the at-risk rules prevent deducting losses from a rental with a regular bank mortgage?
Generally no. Qualified non-recourse financing from a bank or institutional lender counts as at risk under Section 465(b)(6), so most conventionally financed rentals are unaffected by the at-risk limitation.
What is qualified non-recourse financing?
A loan from an arm's-length qualified lender (a bank or similar institution) secured by real property used in the activity, where no one is personally liable beyond the collateral. These loans count as at risk for real property activities.
How do the at-risk rules and passive activity rules interact?
They are two separate limitations applied in sequence: a loss must first survive the at-risk test, and then must satisfy the passive-activity rules to be currently deductible. You must pass both.
What form reports the at-risk limitation?
Form 6198, filed for each activity that could be limited. It reconciles your beginning at-risk amount with contributions, qualifying debt, income, distributions, and losses to determine how much loss is currently allowed. Amounts that survive Form 6198 then go through the passive-activity screening on Form 8582.
Are suspended at-risk losses lost forever?
No. They carry forward indefinitely and are released when you restore at-risk basis — by contributing more cash, adding qualifying debt, or earning income from the activity — or when you dispose of the activity in a taxable transaction.
Does personally guaranteeing a mortgage increase my at-risk amount?
Yes. A personal guarantee makes the debt recourse, which counts as at risk regardless of the qualified non-recourse rules. The tradeoff is real economic exposure — the lender can pursue your other assets if the property's value falls short.
Does the qualified non-recourse exception apply to non-real-estate investments?
No. Section 465(b)(6) is specific to real property activities. For other ventures, non-recourse debt generally does not count toward your at-risk amount, so leveraged losses there are more likely to be limited.
Educational information and estimates only. Not tax advice. Tax rules change and vary by situation; consult a qualified tax professional before acting.