34.4 Advanced Partnership and S Corp Planning Scenarios

Why advanced pass-through planning matters

Partnerships and S corporations are both pass-through entities, but they do not pass consequences through the same way. TCP planning scenarios ask whether a proposed contribution, distribution, loan, sale, or ownership change produces a better result in one structure than the other. The answer turns on basis, liabilities, allocations, entity-level accounts, and owner-level limits.

Build two side-by-side schedules

Keep one schedule for the entity and one for the owner. For a partnership, the owner schedule is the partner's outside basis in the interest; for an S corporation it is stock basis plus separate debt basis. The entity schedule tracks inside basis in assets, built-in gain or loss, liabilities, the S corporation's accumulated adjustments account (AAA), and capital accounts or special allocations for a partnership.

Partnership planning details

A partner's outside basis rises for contributions, taxable and tax-exempt income, and increases in the partner's share of liabilities; it falls for distributions, losses, nondeductible expenses, and decreases in liability share. A debt shift is treated as a deemed cash distribution, so a partner can recognize gain even with no cash received when the deemed distribution exceeds basis.

A sale of a partnership interest can raise a Section 754 election issue when the buyer's outside basis differs from the buyer's share of inside basis. The resulting Section 743(b) adjustment steps the transferee's inside basis up or down so it matches the purchase price, affecting only that partner. TCP may ask for the revised asset basis after a transfer, so tie the sale documents to the inside-outside mismatch.

Classify payments to partners. A guaranteed payment is made without regard to income, gives the partnership a deduction, and is ordinary income (and self-employment income) to the partner. A distribution is a return of capital or share of earnings, not compensation. Misclassifying the two changes taxable income, basis, and self-employment tax.

S corporation planning details

S corporation planning starts with stock basis. Losses pass through only to the extent of stock basis, then debt basis, before at-risk and passive limits; excess loss suspends and carries forward. Debt basis is separate and is not created merely because the corporation has a bank loan. The shareholder generally must lend directly or make an actual economic outlay; a loan guarantee alone does not create debt basis unless the shareholder actually pays.

Distributions follow an ordering rule. An S corporation with no C corporation earnings and profits (E&P) reduces stock basis first and produces gain only after basis hits zero. With accumulated C corporation E&P, the order is generally AAA (tax-free to the extent of basis), then E&P (taxable dividend), then remaining basis, then capital gain. A 100%-shareholder S corporation that converted from a C corporation and sells appreciated assets within the recognition period faces the built-in gains (BIG) tax at the 21% corporate rate; TCP supplies the dates and values when a computation is required.

Exam workflow

1. Identify the proposed transaction and the entity form.
2. Build outside basis, stock basis, and debt basis schedules from source data.
3. Track liabilities separately for partnerships and shareholder loans separately for S corporations.
4. Determine realized gain, recognized gain, entity inside basis, and owner basis for noncash property.
5. Apply ownership-change allocation rules, a Section 754 election, or a closing-of-books election stated in the facts.
6. Compare after-tax results to both the entity and owner before recommending a plan.

The final answer must be specific. Do not stop at "pass-throughs avoid double tax." Name the basis account that changes, whether gain is triggered, whether a loss suspends, and whether the goal is timing, character, cash extraction, or ownership transition.

The loss-limitation stack (test this order every time)

Both structures run a pass-through loss through an ordered set of gates, and TCP loves to test the sequence. Skipping a gate changes the deductible amount.

1. Basis - partnership outside basis, or S corporation stock basis then debt basis.
2. At-risk - losses limited to amounts the owner has economically at risk (Section 465).
3. Passive activity - passive losses deductible only against passive income (Section 469).
4. Excess business loss - noncorporate owners cap aggregate business losses at an inflation-adjusted threshold (about $313,000 single / $626,000 joint for 2026), with the excess carried forward as an NOL.

The partnership advantage shows up at gate 1: because a partner's outside basis includes a share of entity-level liabilities, a partner can often deduct more loss than an otherwise-identical S corporation shareholder, who gets no basis from corporate-level debt.

Side-by-side planning example

Dana invests $50,000 cash in either a partnership or an S corporation that then borrows $200,000 from a bank (no shareholder loan). In year one the entity passes through a $90,000 loss to Dana. In the partnership, Dana's outside basis is $50,000 plus her $200,000 share of the liability (assume she shares it fully) = $250,000, so the full $90,000 loss clears the basis gate. In the S corporation, Dana's stock basis is $50,000 and she has zero debt basis because she did not lend directly, so only $50,000 of loss is allowed and $40,000 suspends until she restores basis.

Same economics, different deductible loss - that contrast is the planning point the exam wants.

Common TCP traps

• Giving an S shareholder basis for entity debt. Only a direct shareholder loan or actual economic outlay creates debt basis; a guarantee does not.
• Treating a guaranteed payment as a distribution. A guaranteed payment is deductible to the partnership and ordinary, self-employment income to the partner; a distribution is neither.
• Ignoring AAA ordering on an S distribution. With C corporation E&P present, the AAA-then-E&P-then-basis order can convert part of a distribution into a taxable dividend.
• Missing the built-in gains tax window. A former C corporation that sells appreciated assets inside the recognition period owes entity-level BIG tax at 21%, on top of the shareholder-level pass-through.