Capital Gains on Partnership Interest Sale

When a partner sells their stake in a partnership, the gain is not always a capital gain—capital gains on partnership interest sale can split into ordinary income and long-term capital gain depending on what assets the partnership holds, creating a mix that surprises many sellers.

The Two-Layer Sale Rule

When a partner sells an interest in a partnership, the Internal Revenue Service treats it as two simultaneous transactions. The first is a deemed sale of the partner’s share of partnership assets; the second is a sale of the partnership interest itself as an equity instrument.

This split creates the central tension: if the partnership holds primarily cash, marketable securities, and long-term real estate, the gain leans toward capital treatment. If it holds accounts receivable, inventory, or recapture property, ordinary income emerges. The cost basis of the partnership interest—what the partner paid to acquire it—is compared against the fair value of that interest on the sale date. The difference is the gain to be split.

Why split at all? Congress wanted to prevent partners from converting ordinary income into capital gain by simply exiting the partnership. A law firm where the gain comes from uncollected fees; a manufacturing partnership where inventory has appreciated—these should not magically become capital gains just because someone sells their stake.

Section 751 Hot Assets

Not all partnership assets trigger the hotchpot rule. Only Section 751 assets do: unrealized receivables and substantially appreciated inventory.

Unrealized receivables include accounts receivable in a cash-method partnership (where revenue hasn’t been recognized), but also any other right to income not yet earned. A consulting partnership with signed contracts not yet billed? That’s an unrealized receivable. So are contract rights, rights to lease payments, and goodwill inherent in those relationships.

Substantially appreciated inventory means inventory assets whose fair value exceeds 120% of cost basis. This is a bright-line test. If a partnership bought inventory for $100,000 and it’s now worth $130,000, the whole inventory pool counts as substantially appreciated. The 120% threshold ensures that only genuinely appreciated holdings trigger the rule.

When a partner sells their interest, they are deemed to have sold their share of these assets first. The gain on that deemed sale is always ordinary income, regardless of how long the partner held the interest. The remaining gain—attributable to the partnership’s other assets—is typically long-term capital gain if the partner held the interest for more than one year.

The Hotchpot Mechanism

The calculation follows a set order. The selling partner is treated as if they had sold:

1. Their share of Section 751 assets (hot assets) at fair value, recognizing ordinary income or loss.
2. Their remaining partnership interest (the “cold” portion) at fair value, recognizing capital gain or loss.

These are not two separate transaction but a single economic event split in character for tax purposes.

Example: A partner in a real estate partnership buys a 10% stake for $100,000. Five years later, the partnership has grown:

• The partnership’s real estate (fair value $1,200,000; basis $800,000) has appreciated.
• The partnership’s accounts receivable (fair value $80,000; basis $0) are uncollected.
• The partner is offered $200,000 for their 10% interest.

The partner is deemed to have received:

• 10% of the accounts receivable = $8,000 (ordinary income on sale: $8,000).
• 10% of the partnership interest in the real estate = $120,000 (capital gain: $120,000 − $100,000 = $20,000).

Total proceeds: $200,000. Split: $8,000 ordinary income; $20,000 long-term capital gain; $172,000 return of basis. The ordinary income portion has no holding-period requirement; it arises purely from the nature of the asset.

Selling Partners vs. Retiring Partners

The hotchpot rules apply whether a partner sells to an outside buyer or to remaining partners. If an existing partner buys out another partner’s stake, the selling partner still must split gain between Section 751 and non-Section 751 assets.

However, a distribution in liquidation of a partnership interest (when a partner exits and receives cash or property in return) is governed by different rules (Section 731, not Section 751). If a liquidating distribution exceeds the partner’s basis, the excess is usually capital gain, subject to other nuances around unrealized receivables and inventory.

Impact of Depreciation Recapture

When a partnership holds depreciable real estate or personal property, depreciation recapture may force additional ordinary income on the selling partner. This is separate from Section 751 but interacts with it. If a partnership has taken $100,000 in deductions on an office building, and the building has appreciated, a partner selling their interest may owe recapture tax on their share of those deductions—taxed at ordinary rates (15% federal for some, up to 25% for real property).

The order of application matters: depreciation recapture is taken first, then Section 751 ordinary income, then capital gain. This stacking can make the tax burden heavier than a simple capital gain would suggest.

Planning Implications

Selling partners often want to know the ordinary-income exposure before closing. This requires the partnership to provide a detailed basis step-up schedule and unrealized-receivables statement. Partners in high-income brackets may face a combined ordinary-income rate (federal, state, and self-employment tax where applicable) of 40–50%, while long-term capital gains may be taxed at only 15–20%. The difference is material.

Some partnerships structure buyouts with an earnout or contingent payment, spreading the gain over multiple years to smooth the ordinary-income hit. Others time exits after a significant inventory write-down or after receivables have been collected (converting them from hot assets to cash). Timing matters: if receivables are collected before sale, they are no longer “unrealized.”

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