A partnership buy-sell agreement is the contract that controls what happens to a partner’s ownership interest when they die, become disabled, retire, divorce, go bankrupt, or simply want out. To do its job, the agreement has to cover six things: the events that trigger a buyout, who buys the departing partner’s interest, how that interest is priced, how the purchase gets funded, how the payments are taxed, and who ownership can and cannot pass to. Weakness in any one area can dissolve the business, force an unwanted co-owner into the partnership, or add hundreds of thousands of dollars to the tax bill.
Events That Trigger a Buyout
Without a defined trigger list, the agreement sits idle while partners argue about whether a given situation even qualifies. Triggers split into events the partner controls and events they don’t.
Death is the core involuntary trigger. Absent a buy-sell, the death of a general partner typically dissolves the partnership under state law. The agreement overrides that default by requiring the surviving partners or the partnership itself to buy the interest from the estate, keeping the business running and giving the estate a guaranteed buyer.
Permanent disability, personal bankruptcy, and divorce are the other involuntary triggers worth naming. Disability should be defined by physician certification and a stated duration. Bankruptcy needs its own clause because otherwise a partner’s interest can pass to a bankruptcy trustee, putting an outsider at the table. Divorce matters because ownership assigned to an ex-spouse in a settlement can produce the same problem; the agreement should give the remaining partners or the entity the right to buy that interest back at the agreement’s valuation.
On the voluntary side, retirement and resignation are the common triggers. Retirement should be tied to specific criteria such as age, years of service, or both. Resignation should require written notice, commonly 60 to 90 days, before the buyout process begins. If the partners work under an employment structure, termination for cause can act as an additional trigger, provided “cause” is defined tightly enough to survive a dispute.
Cross-Purchase, Entity Redemption, or Hybrid
How the buyout is structured decides who writes the check and what the tax picture looks like afterward. There are three choices.
Cross-Purchase
The remaining partners personally buy the departing partner’s interest. When death is the trigger, each partner typically carries a life insurance policy on every other partner. The buying partners’ cost basis in the acquired interest equals what they paid, which reduces their capital gain if they later sell.
The drawback is administrative. A four-partner firm needs six policies to cover every possible death; a six-partner firm needs fifteen. Some partnerships park all the policies in an insurance trust to simplify things, but the underlying policy count doesn’t change.
Entity Redemption
The partnership itself buys back the departing partner’s interest using its own assets or entity-owned life insurance. One policy per partner, held by the entity, so the administration is far simpler.
The tax tradeoff is real. In a cross-purchase, the buyer’s basis equals the price paid. In a redemption, the remaining partners’ individual cost basis stays the same even though their ownership percentages go up, which can produce a larger capital gains bill when a remaining partner eventually sells. The partnership can partly close the gap by making a Section 754 election, which adjusts the basis of the partnership’s underlying assets to reflect the price paid in the redemption.1Office of the Law Revision Counsel. 26 USC 754 – Manner of Electing Optional Adjustment to Basis of Partnership Property That step-up increases future depreciation and amortization for the remaining partners. Once made, though, the election applies to all future transfers and distributions, and revoking it requires IRS approval.
Wait-and-See Hybrid
A hybrid defers the choice. The partnership gets the first option to redeem. If it declines or takes only part, the remaining partners individually can buy what’s left. Anything unpurchased after that must be bought by the partnership. The flexibility comes at the cost of a longer, more complex document, since each possible path needs its own mechanics.
How the Interest Gets Priced
Most buy-sell fights start with valuation. If the agreement is vague about pricing, every other provision becomes harder to enforce. Three approaches are common.
Agreed-Upon Price
Partners sign a certificate of value stating the business’s current worth. It’s cheap and it eliminates arguments at the trigger event. The predictable failure is that partners forget to update it. A value set three years ago rarely reflects reality, and the partner on the wrong side of that gap has a real grievance. The agreement should require annual review and specify that if the certificate isn’t updated within a defined period, the pricing defaults to an appraisal or a formula.
Formula
A formula ties the price to an objective financial metric, most often a multiple of EBITDA averaged over the preceding three to five years. Book value based on partnership assets is another option. Formulas are cheap to run and hard to game, but a rigid earnings multiple won’t catch a sudden market shift or the value of intangibles like client relationships. The number can end up well above or below what the business would actually fetch.
Independent Appraisal
Hiring an appraiser gives the most accurate snapshot but costs the most and takes the longest. The agreement should specify how the appraiser is chosen. A common approach: each side picks one, and those two select a third whose determination is binding.
Just as important is naming the standard of value the appraiser must apply. Fair market value is the standard used for federal tax purposes and reflects the price a willing buyer and willing seller would agree to, with neither under pressure.2Legal Information Institute. Fair Market Value “Fair value,” used in many state statutes for shareholder disputes, often excludes discounts for lack of marketability or minority interest. The difference between the two can amount to 20-35% of the total price, so leaving this ambiguous invites litigation.
Funding the Purchase
A price without a funding mechanism is a promise with no money behind it. The right funding source depends on which event triggers the buyout.
Life insurance is the most reliable funding for death. Proceeds paid by reason of the insured’s death are excluded from gross income, providing an immediate, tax-free pool of cash.3Office of the Law Revision Counsel. 26 USC 101 – Certain Death Benefits Who owns the policy depends on the structure: in a cross-purchase each partner owns policies on the others; in a redemption the partnership owns them.
Disability triggers call for a specialized disability buyout policy, distinct from disability income insurance. These policies usually carry a longer waiting period, on the theory that a buyout should happen only after it’s clear the partner cannot return. Premiums aren’t deductible, but benefits are generally income tax-free.
For predictable events like retirement, the partnership can pre-fund with a sinking fund, setting aside a fixed amount or percentage of profits each year. The agreement should state the contribution schedule and where the fund is held.
When insurance and reserves fall short, the remaining partners or the entity can pay the departing partner over time under a promissory note. The note must carry interest at or above the applicable federal rate. For January 2026, those rates range from 3.63% (annual, short-term) to 4.63% (annual, long-term), depending on duration.4Internal Revenue Service. Rev. Rul. 2026-2 – Applicable Federal Rates A note below the AFR triggers imputed interest, creating phantom income for the lender.5Office of the Law Revision Counsel. 26 USC 1274 – Determination of Issue Price in the Case of Certain Debt Instruments Issued for Property The departing partner may benefit from installment sale treatment, which spreads capital gain across the years payments are received.6Office of the Law Revision Counsel. 26 USC 453 – Installment Method The note should be secured, usually by partnership assets or the purchased interest itself, until it’s paid in full.
Tax Treatment of the Payments
This is where buy-sell agreements most often leave money on the table. The tax code draws a sharp line between two categories of payments to a departing partner, and the agreement’s language decides which side each payment lands on.
Section 736(b): Payments for Partnership Property
Payments in exchange for the departing partner’s share of partnership property are distributions under Section 736(b).7Office of the Law Revision Counsel. 26 USC 736 – Payments to a Retiring Partner or a Deceased Partners Successor in Interest The departing partner recognizes gain or loss as if selling a capital asset, so long-term capital gains rates apply if the interest was held over a year. The partnership doesn’t get a deduction.
Section 736(a): Payments Treated as Income
Everything else falls into Section 736(a) and is taxed as ordinary income to the departing partner, either as a distributive share or a guaranteed payment. The offsetting benefit for the remaining partners is that guaranteed payments are deductible by the partnership.8eCFR. 26 CFR 1.736-1 – Payments to a Retiring Partner or a Deceased Partners Successor in Interest
Why Goodwill Is a Drafting Trap
For general partnerships where capital is not a material income-producing factor (law firms, consulting practices, medical groups), payments for the departing partner’s share of goodwill default to Section 736(a) and ordinary income treatment unless the partnership agreement specifically provides for a goodwill payment.7Office of the Law Revision Counsel. 26 USC 736 – Payments to a Retiring Partner or a Deceased Partners Successor in Interest If the agreement includes a goodwill provision, those payments shift to Section 736(b) and get capital gain treatment.
Capital-intensive partnerships (manufacturing, real estate, retail) don’t get this special rule. Goodwill payments are treated under Section 736(b) regardless of what the agreement says. For a service partnership, then, the agreement’s handling of goodwill directly decides whether a significant chunk of the buyout is taxed as ordinary income or capital gain.
Hot Assets Under Section 751
Payments that would otherwise qualify as capital gain can be recharacterized as ordinary income to the extent they trace to the partnership’s “hot assets,” meaning unrealized receivables and substantially appreciated inventory.9eCFR. 26 CFR 1.751-1 – Unrealized Receivables and Inventory Items When a buyout involves hot assets, the partnership must file Form 8308 to report the exchange.10Internal Revenue Service. About Form 8308, Report of a Sale or Exchange of Certain Partnership Interests
Estate Tax and the Connelly Decision
Two federal rules can override the price the agreement sets and push estate tax higher than anyone planned for.
In Connelly v. United States, the Supreme Court held in 2024 that life insurance proceeds payable to a business to fund a stock redemption are an asset that increases the company’s fair market value for estate tax purposes. The company’s contractual obligation to use those proceeds for the redemption does not offset that value.11Supreme Court of the United States. Connelly v. United States, 602 U.S. ___ (2024) The case involved a corporation, but the same valuation logic applies to any entity-redemption structure where the partnership owns the life insurance.
The consequence is concrete. If the partnership owns a $2 million policy on a partner who holds a 40% interest, the $2 million in proceeds is added to the business’s value before calculating the estate’s share, and the estate owes tax on the larger number. Cross-purchase agreements avoid this because the proceeds go to the surviving partners individually and never flow through the business.
Separately, the IRS can disregard a buy-sell agreement’s stated price for estate tax purposes if the agreement doesn’t satisfy three requirements under Section 2703. It must be a bona fide business arrangement, it cannot be a device to transfer property to family members for less than full consideration, and its terms must be comparable to what unrelated parties would negotiate at arm’s length.12eCFR. 26 CFR 25.2703-1 – Property Subject to Restrictive Arrangements All three must be met independently. An agreement between family members that sets the buyout below fair market value will almost certainly fail this test and expose the estate to a higher valuation.
Transfer Restrictions and Noncompetes
Keeping ownership in the right hands is one of the agreement’s primary functions. It should prohibit any sale, gift, pledge, or assignment of a partnership interest to an outsider without written consent from the remaining partners.
The most common protective mechanism is a right of first refusal. If a partner receives a bona fide outside offer, the partnership or remaining partners get the option to match those terms. The agreement should specify a response window, typically 30 to 60 days, after the selling partner gives written notice of the offer. If no one exercises the right in that window, the sale can proceed on the same terms.
A departing partner who leaves with clients, employees, or trade secrets can cause more damage than the buyout price compensates for. Noncompete and non-solicitation clauses are common additions, restricting the departing partner from competing within a defined geography for a specified period. Enforceability varies by jurisdiction, so the restrictions have to be reasonable in scope, duration, and geography to hold up.
The Administrative Clauses That Get Overlooked
The mechanical provisions get less attention than the big-ticket items, but a missing administrative clause can undermine the whole document.
An annual review requirement forces the partners to revisit the valuation method, confirm that funding levels are still adequate, and update the certificate of value if the agreed-upon price method is being used. Partnerships that skip this step for several years often end up with an agreement that bears no resemblance to the current business.
A dispute resolution clause should send disputes to mediation first and then to binding arbitration if mediation fails. Litigating a buyout is expensive and slow, and the agreement is the place to close off that route.
The agreement should also specify which state’s laws govern, usually the state where the partnership has its principal place of business, which prevents forum-shopping later. And it needs a clear statement that its terms override any conflicting language in the partnership agreement or operating agreement on the transfer of ownership interests. Without that hierarchy clause, contradictions between the foundational documents can create ambiguity about which terms control during a buyout.