Three people start a business: Lighthouse LLC, a multi-member LLC treated by default as a partnership. Jessica writes a $500,000 check. Seth hands over real estate valued at $500,000, although his adjusted basis is only $200,000. And Grady rolls up his sleeves and agrees to run the place. They shake hands on one thing: Jessica and Seth should get their money back before Grady sees a dime of profit. It’s clean, it’s fair, and it’s exactly what a lot of investors want.
The catch is that the IRS cares less about the handshake than about whether the numbers behind it tell the truth. In Episode 33 of Tax in Action, host Jeremy Wells, EA, CPA, uses this single fact pattern to walk through the guardrails of Subchapter K.
The operating agreement is only the start of the story. What really governs each partner’s tax treatment is whether the allocations reflect genuine economic substance. Cash distributions and tax allocations are two different things. And Subchapter K’s flexibility survives IRS scrutiny only when it’s anchored by properly maintained capital accounts, built-in gain that stays with the contributing partner under Section 704(c), and special allocations that carry substantial economic effect.
Let’s follow the journey to see how income passes through before cash ever moves, why some items keep their character, how contributed property drags its history along, and what makes a distribution waterfall hold up.
Income flows through before the cash ever does
Start with the most basic rule in partnership tax. Under Section 701 of Subchapter K, a partnership generally pays no federal income tax. Instead, partners include their distributive shares of the partnership’s income, gains, losses, deductions, and credits on their own returns. The kicker is, they do this whether or not the partnership distributes any cash or property.
That’s the foundational disconnect. Getting taxed and getting paid are not the same event.
Jeremy illustrates the point with United States v. Basye (410 U.S. 441, 1973). A group of physicians in a limited partnership called Permanente contracted with Kaiser Foundation Health Plan to provide medical services. Kaiser paid them two ways:
- A direct amount tied to the number of members enrolled in the plan
- Contributions into a retirement trust funded solely by Kaiser
Permanente never reported the trust contributions as income. The doctors argued they never touched or controlled those funds, and some who left early never collected them at all. As cash-basis taxpayers, they said, they shouldn’t have to report the income.
The district and appellate courts agreed with the physicians, but the Supreme Court reversed, relying on two principles: income is taxable to the party that earned it (the assignment-of-income doctrine, drawn from cases like Lucas v. Earl), and each partner must include a distributive share of the partnership’s income. Together, that made the trust payments taxable to each partner, even the ones who later lost their benefits by breaking their contracts. It can feel harsh, but that’s why you have to warn your clients that a profitable partnership creates taxable income even in a lean cash year.
Income passes through by character as well as by amount. So you can’t dump all of it into ordinary business income.
Separately stated items keep their character
Under Section 702, certain items must be separated from ordinary partnership income and reported separately because they’re taxed differently at the partner level. That category includes:
- Qualified dividends
- Capital gains and losses
- Charitable contributions (which are AGI-limited itemized deductions on Schedule A)
- Foreign taxes, which may support a foreign tax credit
- Gains and losses on Section 1231 property
The character of each item survives the pass-through as if the partner had realized it directly. Ordinary business income, by contrast, gets blended into a single figure.
Interest isn’t one of the items specifically named in §702(a)(1)–(6), but it nevertheless must generally be separately stated. Jeremy sees it misreported all the time, buried as “other income” on line 7, page one of the 1065. That’s wrong. Interest income belongs on Schedule K, line 5, so it flows correctly to Schedule B of the 1040 and feeds calculations like the net investment income tax on Form 8960.
He also draws the partner-level versus partnership-level line. Passive-loss limitations under Section 469 are tested at the partner level. But profit motive is tested at the partnership level. In Simon v. Commissioner (Third Circuit, 1987), the court held that profit motive turns on the intent of the people managing the partnership, not the investment intent of any single partner. If the folks actually running the business don’t treat it like a business, the partnership may lose its Section 162 deductions.
There’s a related trap. A partner generally can’t deduct partnership expenses on a personal return. The exception is narrow. The partnership agreement or an established practice must require the partner to bear the cost without reimbursement. A partner who simply chooses not to request reimbursement is not entitled to a deduction. Jeremy recommends having the partnership pay its own bills.
These rules protect character. But the heart of the matter is tracking the economics, starting with property that shows up carrying baggage.
Contributed property drags its history along
Under Section 721, contributing appreciated or depreciated property doesn’t trigger immediate gain or loss. Built-in gains and losses are preserved. Section 723 then gives the partnership a carryover inside basis, while the asset is booked at fair market value.
Jeremy uses a second example to show why you have to track two numbers. Jessica contributes $100,000 in cash. Seth contributes real property (FMV $80,000, basis $20,000) plus equipment (FMV $20,000, basis $60,000). That’s $100,000 of value in all, making them 50/50 partners. Book value drives each partner’s interest. Adjusted basis drives depreciation.
Section 704(c) requires pre-contribution built-in gain or loss stay with the contributing partner. Watch the distortion. On the real property, book depreciation of $8,000 gives each 50/50 partner $4,000. But tax depreciation, built on the $20,000 carryover basis, produces only $2,000. Jessica gets that $2,000. The missing $2,000 is the ceiling rule at work. It caps the tax items on 704(c) property at what the property actually generates.
Regulation 1.704-3 offers three fixes:
- The traditional method
- The traditional method with curative allocations
- The remedial method
Each handles the ceiling-rule distortion a little differently, and each gets complicated fast.
To police whether allocations honor the deal, the capital account acts as a scorecard.
Capital accounts and substantial economic effect
A capital account is the book-value measure of a partner’s equity. In other words, it’s what a partner would receive if the partnership liquidated at book value after paying off its liabilities. Contributions and income increase it while losses, deductions, and distributions decrease it. Liabilities don’t affect it, and it’s a separate concept from outside basis. Unlike basis, a capital account can go negative; whether the partner is actually required to restore that deficit depends on the partnership agreement and, in particular, whether the partner has a DRO.
Section 704(b) is where flexibility meets accountability. Legitimate structures are everywhere. An investor gets a return of capital and a preferred return before a service partner shares in residual profits. Abusive ones, such as shifting income to a lower-bracket partner who loops the cash back, or dumping income onto a partner just to soak up net operating loss carryovers, don’t fly.
For the principal safe harbor, an allocation needs economic effect. Under the basic safe harbor, the agreement generally must maintain §704(b) capital accounts, liquidate based on positive capital balances, and require partners to restore capital-account deficits. However, an alternative test can apply without a full DRO if the agreement includes a qualified income offset and meets the regulation’s other limitations. It also has to be substantial, meaning it meaningfully changes the dollars partners receive apart from any tax effects. The difference between the two cures matters. Under a DRO, the partner contributes cash to erase a deficit; under a QIO, income is reallocated to repair it. Keep in mind that missing the safe harbor doesn’t automatically kill an allocation. It just invites more scrutiny. Now bring the tools back to Jessica, Seth, and Grady.
Making the waterfall hold up
A compliant Lighthouse waterfall might send available cash first to Jessica until she recovers her $500,000, then to Seth until he recovers the agreed book value of his property, with remaining profits and distributions shared with Grady after that.
But cash distributions and tax allocations are not the same thing. If Jessica takes the early cash, the agreement must also allocate enough book income to her to support that result. Otherwise the capital accounts distort. And Seth’s roughly $300,000 built-in gain on the appreciated real estate stays with Seth under Section 704(c). It can’t shift to Jessica or Grady just because the property entered the partnership.
Where the money meets the math
Jeremy’s walkthrough boils down to a few lessons worth taping to your monitor:
- Partnerships allocate by the agreement, not ownership percentages. Get the operating or partnership agreement before you touch the return. Don’t prepare one without the governing documents.
- Separately stated items keep their character. Plan for their partner-level effects; don’t assume everything blends together at the entity level.
- Contributed property carries over its tax basis. Watch for 704(c) allocations whenever book and tax values diverge, especially on depreciable or appreciated assets.
- Special allocations survive only with substantial economic effect. Genuine economics, not tax gymnastics.
The bigger discipline is simple to state and hard to fake. Honor the deal the partners actually struck by making the tax mechanics mirror the real economic arrangement so the waterfall holds up when the money flows.
For Jeremy’s complete walkthrough of Lighthouse LLC, listen to the full episode of Tax in Action. And stay tuned for the next episode, where he takes on outside basis, distributions, and what happens when a partnership liquidates.