Nonrecourse debt increases basis in a partnership but not in an S corporation. A partner’s share of partnership nonrecourse liabilities is treated as a deemed cash contribution under Internal Revenue Code Section 752, which raises the partner’s outside basis and creates room to deduct losses and take tax-free distributions. An S corporation shareholder gets nothing from corporate-level debt, whether recourse or nonrecourse, and a personal guarantee on that debt doesn’t change the answer until the shareholder actually pays on it.
That single distinction shapes how leveraged investments, especially in real estate, get structured.
Why Partnership Nonrecourse Debt Creates Basis
Section 752(a) treats any increase in a partner’s share of partnership liabilities as a contribution of money to the partnership.1Office of the Law Revision Counsel. 26 USC 752 Treatment of Certain Liabilities That deemed contribution feeds directly into the partner’s outside basis, the running total of after-tax dollars considered invested in the partnership interest. Nonrecourse debt counts. No partner is personally liable for repayment, and each partner still picks up a share for basis purposes.
Two consequences flow from that.
A partner can only deduct their share of partnership losses up to the adjusted basis of the partnership interest.2Office of the Law Revision Counsel. 26 USC 704 Partners Distributive Share More basis, more room to absorb losses. And cash distributions from the partnership are tax-free only up to the partner’s outside basis. Anything above that line is taxable gain. Pulling nonrecourse debt into basis gives partners a cushion that no other pass-through entity provides.
How the Debt Gets Allocated Among Partners
Nonrecourse debt isn’t split evenly. Treasury Regulation 1.752-3 sets a three-tier allocation:3eCFR. 26 CFR 1.752-3 Partners Share of Nonrecourse Liabilities
- First, each partner is allocated nonrecourse liabilities equal to their share of partnership minimum gain. Minimum gain exists when a nonrecourse loan exceeds the tax basis of the property securing it. A $2 million mortgage on a building with $1.4 million of adjusted basis produces $600,000 of minimum gain, split among the partners.
- Second, each partner is allocated the taxable gain that would fall to them under Section 704(c) if the partnership sold every property subject to a nonrecourse liability for exactly the debt amount. This catches built-in gain attached to a specific partner because of how contributed property was valued.
- Third, whatever nonrecourse debt is left gets divided by the partners’ shares of partnership profits.
That third tier does most of the work for ordinary limited partners in a real estate fund. A passive 5% limited partner can still carry meaningful basis from the partnership’s mortgage debt because the allocation follows the profits percentage.
When a Reduction in Debt Becomes a Taxable Event
The mirror rule under Section 752(b) treats any decrease in a partner’s share of partnership liabilities as a deemed cash distribution to that partner.4eCFR. 26 CFR 1.752-1 Treatment of Partnership Liabilities Refinance a loan, pay down principal, or convert nonrecourse debt to recourse debt in a way that shifts the allocation, and a partner’s basis drops. If the deemed distribution runs past the partner’s remaining outside basis, the excess is taxable gain. No cash needs to change hands for this to happen, which is what makes it easy to miss.
The same rule applies on a sale of a partnership interest. The departing partner’s share of liabilities becomes part of the amount realized, which increases the gain or reduces the loss on the sale.
Why S Corporation Shareholders Get Nothing From Entity Debt
S corporation shareholders work under different rules. Corporate-level debt does not increase stock basis. Recourse or nonrecourse, secured or unsecured, guaranteed or not, it does not matter. Even a personal guarantee on the corporation’s bank loan creates no basis until the shareholder actually makes a payment on the guarantee.5Internal Revenue Service. Instructions for Form 7203
Section 1366(d) caps loss deductions at the sum of the shareholder’s adjusted stock basis plus the adjusted basis of any indebtedness of the corporation to the shareholder.6Office of the Law Revision Counsel. 26 USC 1366 Pass-Thru of Items to Shareholders That second component is the only route by which debt can enter the calculation, and it requires the shareholder to personally lend money to the corporation. Third-party loans, even ones the shareholder guarantees, don’t count.7Internal Revenue Service. S Corporation Stock and Debt Basis
An example makes the pinch concrete. An S corporation allocates a $50,000 loss to its sole shareholder, who has $10,000 in stock basis and has not loaned the corporation anything. Only $10,000 is deductible this year. The other $40,000 suspends and carries forward indefinitely, deductible only when the shareholder rebuilds stock or debt basis.
Creating Debt Basis Through a Direct Loan
A shareholder who wants debt basis has to fund the loan personally. The common structure is a back-to-back loan: the shareholder borrows from a bank in their own name, then re-lends the proceeds to the S corporation. Because the shareholder is personally on the bank note and separately holds a receivable from the corporation, the IRS accepts this as bona fide debt basis so long as the economic substance is real.7Internal Revenue Service. S Corporation Stock and Debt Basis
A bank loan made directly to the corporation, with the shareholder as guarantor, does not work. The shareholder has no outlay and no receivable. A guarantee is not a loan. If financing is being routed with loss deductions in mind, the money has to move through the shareholder’s hands.
Basis Isn’t Enough: The At-Risk Catch
Basis clears the first hurdle for loss deductions. Section 465 is the second. A taxpayer can only deduct losses up to the amount they are considered at risk in the activity, which generally means cash and property contributed plus amounts borrowed on which the taxpayer is personally liable.8Office of the Law Revision Counsel. 26 USC 465 Deductions Limited to Amount at Risk Standard nonrecourse debt is excluded. A partner can have $500,000 of outside basis from partnership nonrecourse debt and only $50,000 of at-risk amount, and the loss deduction stops at $50,000.
The exception carved out for real estate is qualified nonrecourse financing. It counts toward both basis and at-risk amounts. To qualify, the debt must:
- Be used in the activity of holding real property;
- Come from a qualified lender (typically a bank, insurance company, or pension trust) or from a federal, state, or local government, or be guaranteed by such a government;
- Carry no personal liability for any person; and
- Not be convertible into an equity interest.9eCFR. 26 CFR 1.465-27 Qualified Nonrecourse Financing
Related-party loans can qualify only if the terms are commercially reasonable and substantially the same as those an unrelated lender would offer. Seller financing between related parties draws the closest scrutiny. The security has to be real property used in the activity; if other collateral makes up more than 10% of the total fair market value of all collateral, the loan fails.
A typical commercial mortgage from a bank on an apartment building will qualify. A below-market note from a related seller who is also a partner will not.
Why Leveraged Real Estate Runs Through Partnerships
Set the two entity types side by side:
- Entity-level nonrecourse debt raises partner basis. It does nothing for S corporation shareholder basis.
- Entity-level recourse debt raises basis for partners who bear economic risk of loss. It does nothing for S corporation shareholders.
- A personal guarantee can create basis for a partner who bears true economic risk of loss on the guaranteed debt. For an S corporation shareholder, it creates basis only when the guarantee is actually paid.
- Direct loans from an owner to the entity increase partner basis and create separate debt basis for an S corporation shareholder. This is the only route by which S corporation borrowing indirectly supports loss deductions.
- For at-risk purposes, only qualified nonrecourse financing tied to real property counts, and it counts for either entity type.
This is why leveraged real estate deals are almost always partnerships or LLCs taxed as partnerships rather than S corporations. Passing mortgage debt through to investor basis, and then meeting the qualified nonrecourse financing test to clear the at-risk rule, gives partnership investors enough headroom to absorb depreciation losses in the early years of ownership. That headroom is not available on the S corporation side.
What the IRS Expects You to File
The basis calculation matters at filing time because the IRS has forms designed to catch it.
S corporation shareholders must file Form 7203 with their individual return in any year they claim a loss deduction, receive a non-dividend distribution, dispose of stock, or receive a loan repayment from the corporation.5Internal Revenue Service. Instructions for Form 7203 Keeping the form current even in years when filing is not required saves considerable effort later; reconstructing basis history during an audit is slow and expensive.
Taxpayers in at-risk activities that generate losses file Form 6198 to report the at-risk amount and how much of the current-year loss is allowable.10Internal Revenue Service. Instructions for Form 6198 This applies to individuals, partnerships, and S corporation shareholders whenever the activity has amounts not at risk.
Getting the numbers wrong carries teeth. The accuracy-related penalty under Section 6662 is 20% of the underpayment attributable to a substantial understatement of income tax, with “substantial” defined as more than the greater of 10% of the tax that should have been shown on the return or $5,000.11Office of the Law Revision Counsel. 26 USC 6662 Imposition of Accuracy-Related Penalty on Underpayments For an investor in a leveraged partnership claiming six-figure depreciation deductions, a single allocation error clears that threshold easily.