Buying Out a Business Partner: Tax Treatment and Planning Guide

When one partner exits, the transaction looks simple — one side writes a check, the other walks away. The tax treatment is anything but. Whether the selling partner recognizes capital gain or ordinary income, and whether the buying partner gets a stepped-up basis in the business's assets, both turn on specific IRC provisions that most business owners never see coming. This guide covers the rules for LLCs, general partnerships, and limited partnerships (but not S-corps or C-corps, which follow different rules).

Two ways a buyout can happen

A partner exit takes one of two legal forms, and the tax results differ significantly:

1. Sale to a third party (or to a co-partner directly): The departing partner sells their partnership interest to someone else. The partnership itself is not a party to the transaction. Governed by IRC §741 and the §751 hot-assets exception.
2. Liquidating distribution from the partnership: The partnership buys out the departing partner using partnership funds. The partnership redeems the interest. Governed by IRC §736.

The economics may look identical — Partner B receives $500,000 and exits — but the tax treatment for both parties differs depending on which structure is used. Most two-owner LLC buyouts default to the liquidating distribution structure, because the continuing owner writes the check using business funds or a business loan.

The §741 default: sale of a partnership interest = capital gain

Under IRC §741, the gain or loss on a sale of a partnership interest is treated as gain or loss from the sale of a capital asset — meaning long-term capital gain if the seller held the interest more than one year.¹

The gain is simply the sale price minus the seller's outside basis in the partnership interest:

• Sale price: Total consideration received, including any partnership liabilities assumed by the buyer (or relieved from the seller)
• Outside basis: The seller's adjusted tax basis in their partnership interest (increases with income allocations and contributions; decreases with loss allocations and distributions)

For 2026, long-term capital gains tax rates are:²

The 3.8% Net Investment Income Tax (NIIT) applies to the lesser of net investment income or the amount by which modified AGI exceeds $250,000 MFJ / $200,000 single. Partnership interest sale gain typically constitutes net investment income unless the seller is a material participant in the partnership.

The §751 hot assets exception: where ordinary income enters

The §741 capital gain treatment is subject to a major exception. Under IRC §751, if the partnership holds hot assets, the portion of the gain attributable to those assets is taxed as ordinary income — regardless of how long the partner held their interest.³

Hot assets are defined in §751 as:

• Unrealized receivables: Includes accounts receivable for services or goods that the partnership hasn't yet recognized as income — most common in cash-basis partnerships. Also includes the recapture potential on depreciable property (§1245 recapture and §1250 depreciation recapture). This is the trap most business owners miss.
• Substantially appreciated inventory: Inventory items whose fair market value exceeds 120% of the partnership's adjusted basis in those items.

How the §751 allocation works

When a partner sells their interest, §751 requires the parties to bifurcate the gain:

1. Determine the partnership's hot assets — their FMV and adjusted basis.
2. Calculate the seller's allocable share of the hypothetical gain on those hot assets (as if the partnership sold them at FMV).
3. Treat that portion of the overall sale gain as ordinary income.
4. The remainder is capital gain under §741.

Numerical example

Two equal 50/50 partners in a consulting LLC (cash-basis). Partner B is selling their 50% interest to Partner A for $500,000. Partner B's outside basis is $80,000. Total gain = $420,000.

Partnership's assets (Partner B's 50% allocable share):

Wait — the asset-level gain ($470K) differs from the overall gain ($420K) because Partner B's outside basis ($80K) is different from the inside basis of B's share ($30K). §751 uses the asset-level gain on hot assets, not the overall gain ratio. So:

• Hot asset ordinary income: $170,000 ($70K equipment recapture + $100K receivables)
• Capital gain: $420,000 − $170,000 = $250,000

If Partner B and Partner A are high-income earners (>$613,700 MFJ combined income), the tax cost difference is stark:

• $170,000 × 37% ordinary = $62,900
• $250,000 × 23.8% LTCG+NIIT = $59,500
• Total federal tax on $420,000 of gain: approximately $122,400

Had all $420,000 been capital gain, the federal bill would have been $99,960 — roughly $22,000 less. The hot asset allocation is not negotiable between the parties; it follows from the asset-level facts.

§736: the liquidating distribution rules

If the partnership buys out the departing partner (rather than an individual co-partner buying the interest), IRC §736 controls. §736 divides payments between two buckets with different tax treatment.⁴

§736(b) — payments for partnership property

Payments for the retiring partner's share of partnership property are treated as distributions under §731. The partner recognizes capital gain only to the extent the distribution exceeds their outside basis. These payments are not deductible to the partnership.

§736(a) — payments NOT for property

Payments that are not for partnership property — specifically, payments for goodwill in a service partnership when goodwill is not specified in the partnership agreement, and guaranteed payments for ongoing services — are treated as either:

• A distributive share of income (if tied to partnership profits) — ordinary income to the recipient, deductible/reduces remaining partners' income
• A guaranteed payment (if fixed regardless of profits) — ordinary income to the recipient, deductible by the partnership under §707(c)

§736 and hot assets interact

Even in a §736 liquidating distribution, §751 still applies to the §736(b) portion. Payments for the retiring partner's share of hot assets (receivables, §1245 recapture) are still treated as ordinary income — §736 doesn't override §751. The net effect:

• §736(a) payments = ordinary income (deductible to partnership if guaranteed payment)
• §736(b) payments for hot assets = ordinary income (§751)
• §736(b) payments for other property (goodwill if specified, capital assets) = capital gain

§754 election: the buyer's inside basis step-up

When Partner A buys Partner B's interest for $500,000, Partner A has an outside basis of $500,000 in the partnership interest. But the partnership's inside basis in its assets hasn't changed — equipment is still fully depreciated, receivables still have a $0 basis. Partner A would get income and gain allocations calculated on the old inside basis, effectively being taxed on income/gain that was really "baked into" the purchase price.

The fix is the §754 election. If the partnership has (or makes) a §754 election, IRC §743(b) requires the partnership to adjust its inside basis in assets by the difference between Partner A's new outside basis and Partner A's share of the partnership's inside basis.⁵ The adjustment is allocated among assets under §755.

In the example above:

• Partner A's outside basis (cost): $500,000
• Partner A's share of partnership inside basis (B's old basis): $30,000
• §743(b) adjustment: +$470,000

This $470,000 adjustment is allocated among the partnership's assets to reflect their FMV at the time of purchase. Equipment gets a $70,000 step-up (restoring the depreciation basis; Partner A can now depreciate it again under the applicable MACRS life). Receivables get a $100,000 step-up (reducing Partner A's income allocation when they're collected). Goodwill gets a $300,000 step-up (amortizable over 15 years under §197).

Without a §754 election, Partner A inherits a zero basis in all of these assets and will recognize income and gain as the partnership collects receivables, sells equipment, or eventually sells the business — even though Partner A effectively pre-paid those taxes through the $500,000 purchase price.

Installment sales: §453 and partner buyouts

When the buyout price is paid in installments over time (seller-financed deals are common in partnership exits), the selling partner can typically use installment sale reporting under §453 for the capital gain portion.⁶ The gross profit ratio (gain ÷ contract price) is applied to each payment received to determine the taxable gain per year.

However:

• Hot asset ordinary income (§751) is fully taxable in the year of sale — §453(i) treats recapture income as recognized immediately, even if payments are spread over years. The seller owes tax on the hot asset portion in year 1 regardless of when the cash arrives.
• §453A interest charge applies if the total installment obligation exceeds $5 million — the seller owes an interest charge on the deferred tax liability.
• Imputed interest under §7872 applies if the note bears below-market interest (generally, below the Applicable Federal Rate). The AFR for June 2026 should be verified at time of transaction.

Partnership liabilities and the buying partner

When a partner sells their interest, their share of partnership liabilities is treated as additional consideration received — it increases the amount realized. When the buying partner acquires the interest, they assume the seller's share of liabilities, which increases the buyer's outside basis.

Example: Partner B's interest has an FMV of $500,000 but the partnership also has $200,000 in recourse debt, of which B's share is $100,000. B's amount realized = $500,000 (cash) + $100,000 (liability relief) = $600,000. The buyer's outside basis = $500,000 (purchase price) + $100,000 (liability assumed) = $600,000.

Getting this right matters for calculating the §751 ordinary income and the §743(b) adjustment. The IRS has consistently required partnership agreements and allocations to properly track recourse vs. nonrecourse debt under §752.

Negotiating the buyout price and structure

Most partner buyouts are negotiated at a business level ("we've agreed B gets $500K for their 50%"), but the tax allocation inside that price has significant consequences for both parties. Key negotiation points:

State tax considerations

Most states follow the federal capital gain vs. ordinary income characterization, but with meaningful differences:

• California: No preferential capital gains rate — all gain is taxed at ordinary income rates up to 13.3%. The capital gain vs. ordinary income distinction matters for federal but not California state.
• New York: Follows federal characterization; state rate of 10.9% on income above $25M for high earners.
• Source-state taxation: Some states (e.g., CA, NY) tax nonresident partners on gains from partnership interests if the underlying business was conducted in that state — even if the seller now lives elsewhere. Sourcing rules vary.
• §754 step-up: Most states require conforming to the federal §743(b) adjustment, but conformity is not universal. Confirm with a CPA in the partnership's state of operation.

The process: what actually needs to happen

1. Get a business valuation or agreed price. If the parties disagree on value, a business valuation professional (ABV, CVA) can provide a defensible FMV. The buy-sell agreement may specify a valuation formula — if so, confirm it still reflects market reality.
2. Asset allocation agreement. Both parties should sign a written allocation of the purchase price among asset categories (cash, receivables, equipment, goodwill). This prevents IRS challenges and sets the basis for the §743(b) adjustment.
3. Confirm hot assets. The CPA should identify all §751 hot assets as of the transaction date and calculate the ordinary income portion before closing.
4. Decide on §754 election. If the partnership hasn't elected, the buyer should request it as a condition of the deal. File with the partnership's tax return for the year of transfer.
5. Amend the partnership agreement. Remove the departing partner, update ownership percentages, economic allocations, and management rights for the continuing partner(s).
6. File Form 1065 for the year of transfer. The departing partner's K-1 should reflect their distributive share through the exit date. The §743(b) adjustment appears on a statement attached to the return.
7. Departing partner files Schedule D and Form 8949. Reports capital gain; hot asset ordinary income is reported separately on Form 4797 (§1245 recapture) or as ordinary income on Schedule E.

Common mistakes in partner buyouts

• Treating the entire sale as capital gain. Many business owners and their advisors initially assume the §741 rule means all-capital-gain. Failing to identify and separate hot assets results in a tax underreporting that the IRS will catch on audit.
• Ignoring §1245 recapture in the hot asset analysis. Even if the partnership has no accounts receivable, equipment, vehicles, and leasehold improvements with accumulated depreciation all create §1245 recapture exposure. This is an unrealized receivable under §751(c) and generates ordinary income.
• Missing the goodwill clause opportunity. Service partnerships that don't address goodwill in their agreement inadvertently push goodwill payments into §736(a) ordinary income for the seller. This is often worth $50,000–$150,000 in extra taxes in a mid-market professional firm buyout.
• Failing to request the §754 election. A buyer who pays $500,000 for a partnership interest without a §754 election will be taxed on the same income and gain the seller was taxed on at exit. The double-taxation problem is preventable.
• Structuring installment sale without accounting for §453(i). Sellers who spread payments over time expecting to defer all taxes are surprised when the hot asset ordinary income is due in full in year one.
• Noncompete allocated incorrectly. A noncompete agreement paid to the departing partner is ordinary income to them and amortizable over 15 years for the buyer. Mischaracterizing it as part of the goodwill purchase price can shift tax character incorrectly for both sides.

Sources

1. IRC §741 — Recognition and Character of Gain or Loss on Sale or Exchange (LII / Cornell Law). Provides the default rule that gain or loss from the sale of a partnership interest is treated as capital gain or loss, subject to the §751 exception for hot assets. Applies to interests held in LLCs treated as partnerships and traditional partnerships.
2. IRS Topic No. 409 — Capital Gains and Losses. 2026 long-term capital gains rates: 0% (taxable income up to $98,900 MFJ / $49,450 single), 15% ($98,901–$613,700 MFJ / $49,451–$545,500 single), 20% (above $613,700 MFJ / $545,500 single). NIIT: 3.8% on net investment income above $250,000 MFJ / $200,000 single per IRC §1411.
3. IRC §751 — Unrealized Receivables and Inventory Items (LII / Cornell Law). Defines hot assets as unrealized receivables (including §1245 and §1250 recapture potential per §751(c)) and substantially appreciated inventory (FMV exceeds 120% of adjusted basis). Requires ordinary income treatment on the hot-asset portion of any partnership interest sale gain.
4. IRC §736 — Payments to a Retiring Partner or a Deceased Partner's Successor in Interest (LII / Cornell Law). §736(a) covers payments not for property (guaranteed payments or distributive share — ordinary income, deductible/pass-through to remaining partners); §736(b) covers payments for partnership property (capital gain, non-deductible). The goodwill clause in the agreement determines which subsection controls goodwill payments in service partnerships.
5. IRC §743(b) — Special Rules Where Section 754 Election or Substantial Built-In Loss (LII / Cornell Law). Requires an inside-basis adjustment equal to the difference between the transferee's outside basis and their proportionate share of the partnership's inside basis, when a §754 election is in effect. Adjustment allocated among assets under §755.
6. IRC §453 — Installment Method (LII / Cornell Law). Allows capital gain to be reported as payments are received using the gross profit ratio. §453(i) requires recapture income (§1245/§1250) to be recognized in full in the year of sale regardless of installment structure. §453A imposes an interest charge when installment obligations exceed $5 million.

Tax law citations reflect the Internal Revenue Code as in effect for 2026. Capital gains brackets verified against IRS published tables for tax year 2026. IRC §736, §741, §751, §743, §754, and §453 are statutory provisions that do not change year to year, though the IRS periodically issues regulations and rulings that affect their interpretation. Consult a CPA and business attorney before structuring any partner buyout — the interplay of entity tax elections, state sourcing rules, and negotiated price allocations creates material variation from the general rules described here. Content does not constitute legal or tax advice.