Business Valuation for Partner Buyouts: Methods, Fair Value & Buy-Sell Agreements
Jeet Chaudhary
on
Introduction
Two partners built a business together for fifteen years on a handshake and a one-page operating agreement that said, in essence, "if one of us leaves, we will figure out a fair price." That sentence has ended more partnerships in litigation than almost any other single drafting choice.
A partner buyout is not a negotiation that starts with a number. It starts with a valuation standard, a method, and a governing agreement, and only then does it produce a number both sides can defend. Business owners, CFOs, and founders who wait until a partner is retiring, disputing, or has passed away to ask what the business is actually worth are negotiating from the weakest position: no agreed methodology, no independent appraiser, and no time.
This article walks through how partner buyouts are actually valued in 2026, why fair market value and fair value produce different answers to the same question, how the One Big Beautiful Bill Act (OBBBA) and recent Tax Court and Supreme Court decisions changed the buy-sell agreement landscape, and how the buyout is taxed depending on how it is structured.
Key Takeaways
- A partner buyout requires a defined valuation standard before a number is discussed, since fair market value and statutory fair value can produce materially different results.
- The income, market, and asset approaches are weighted based on the nature of the business, not averaged mechanically.
- Discounts for lack of marketability and lack of control frequently drive the final price more than the underlying method chosen.
- IRC Section 2703 requires a buy-sell agreement to meet three specific tests before its fixed price controls for federal estate and gift tax purposes.
- The 2024 Connelly v. United States decision requires corporate-owned life insurance proceeds to be included in entity value, even when the company is obligated to use those proceeds for a redemption.
- IRC Section 736 splits partnership buyout payments into ordinary income and capital gain categories, and the partnership agreement's treatment of goodwill can shift that split.
- The 2026 federal estate and gift tax basic exclusion is $15,000,000 per individual, and the annual gift exclusion is $19,000 per recipient.
Related-party installment financing should carry interest at or above the current month's Applicable Federal Rate to avoid imputed interest exposure.
What a Partner Buyout Actually Requires
A partner buyout is the purchase of a departing owner's interest, whether structured as a corporate stock redemption, a partnership interest liquidation, or an LLC membership interest transfer. The mechanics differ by entity type, but every buyout shares one question: what is the departing partner's ownership interest worth, as of a specific date, under a specific standard of value.
That last phrase carries weight. The same company can produce three different buyout prices depending on whether the valuation applies fair market value, statutory fair value, or a negotiated investment value, and depending on whether marketability and control discounts are applied. A buyout price that ignores this distinction is not a shortcut. It is a dispute waiting for a trigger event.
Why Buyouts Happen
Buyout triggers generally fall into a small set of recurring categories, sometimes referred to as the "four Ds and an R":
- Death of a partner, triggering a purchase from the estate.
- Disability that prevents continued active participation.
- Divorce, where a partner's ownership interest becomes a marital asset requiring valuation.
- Disagreement or deadlock between owners over the direction of the business.
- Retirement or a voluntary decision to exit.
Each trigger carries a different urgency and, frequently, a different valuation date. A well-drafted buy-sell agreement anticipates all of them with the same pricing mechanism rather than leaving each scenario to be negotiated separately after the fact.
Fair Market Value Versus Fair Value: The Distinction That Changes the Number
Business owners often use "fair value" and "fair market value" interchangeably in conversation. In a valuation report, they are not the same standard, and confusing them is one of the most common and most expensive mistakes in partner buyout planning.
Fair Market Value (FMV)
Fair market value is the standard the IRS applies for tax purposes, including gift and estate tax valuations, and it is the standard most negotiated buyouts default to unless a governing agreement or state statute specifies otherwise. The IRS's own guidance to its valuation examiners, published at IRM 4.48.4, Business Valuation Guidelines, applies the long-standing definition: the price at which property would change hands between a willing buyer and a willing seller, neither under compulsion to act, and both having reasonable knowledge of the relevant facts.
Because FMV assumes a hypothetical willing buyer and seller rather than the actual remaining partners, it generally permits discounts for lack of control and lack of marketability where the interest being valued is a minority, non-marketable stake. Those discounts, discussed below, are frequently the single largest swing factor in a partner buyout price.
Fair Value in Statutory and Dispute Contexts
Fair value is a different legal standard, typically defined by state corporate statutes and case law, most often appearing in dissenting shareholder appraisal actions and oppressed minority shareholder litigation. Many states applying this standard hold that marketability and minority discounts generally should not apply when a majority owner or the company itself is squeezing out a minority holder, since discounts would let the party causing the buyout benefit from the illiquidity it created. This varies meaningfully by state, so the applicable rule depends on where the entity is organized and any dispute is litigated.
Investment Value
A third standard, investment value, reflects what the specific interest is worth to a particular buyer, such as a remaining partner who will realize operational synergies or control benefits that a hypothetical outside buyer would not. Negotiated buyouts sometimes land closer to investment value than fair market value, particularly where the remaining partner has no realistic alternative but to buy.
Two appraisers using the same three valuation methods can produce materially different numbers simply because one applied fair market value with marketability and control discounts and the other applied a statutory fair value standard without them. Before commissioning a valuation, the governing document, and where relevant the applicable state statute, should specify which standard controls. Skipping this step is how technically competent valuations still end up contested.
The Three Core Valuation Methods Used in Partner Buyouts
Once the standard of value is established, a credentialed valuation professional generally applies one or more of three recognized approaches, consistent with the framework the IRS's own Business Valuation Guidelines outline for its examiners, and the principles long applied to closely held business valuations for tax purposes.
Income Approach
The income approach values the business based on its capacity to generate future economic benefit, most commonly through a discounted cash flow (DCF) analysis or a capitalization of earnings method. A DCF projects the company's future free cash flows and discounts them to present value using a rate that reflects the risk of achieving those projections, generally built from the weighted average cost of capital or a build-up method incorporating a risk-free rate, equity risk premium, size premium, and company-specific risk adjustment. The capitalization of earnings method is a simplified version, dividing a single normalized earnings figure by a capitalization rate, and suits stable, mature businesses with limited growth expectations.
This approach tends to carry the most weight for partnerships and professional service firms where value is driven primarily by ongoing earning capacity rather than a portfolio of hard assets, which describes a large share of the businesses where partner buyouts actually occur: law firms, medical practices, consulting firms, and closely held operating companies.
Market Approach
The market approach derives value from actual transactions, either by comparing the subject company to sales of similar privately held businesses (the guideline transaction method) or to publicly traded companies in a comparable industry (the guideline public company method), with adjustments for differences in size, growth, and risk profile. Reliable private transaction data can be difficult to obtain for smaller, closely held businesses, which is often the limiting factor in how heavily this approach is weighted.
Asset-Based Approach
The asset-based approach values the business by adjusting its balance sheet to fair market value, typically through an adjusted net asset method that restates assets and liabilities, including intangible assets that may not appear on the books at all, such as customer relationships or internally developed processes. This approach generally carries the most weight for asset-heavy or holding-company structures and the least weight for operating businesses where earning capacity, rather than liquidation value, drives what a buyer would pay.
A defensible partner buyout valuation generally does not average all three approaches mechanically. Instead, the appraiser weights the approaches based on which best reflects how a buyer would actually value that specific business, and documents the reasoning so the conclusion can withstand scrutiny from a bank, the IRS, or opposing counsel in a dispute.
Valuation Discounts and Premiums That Decide the Real Buyout Price
The headline enterprise value of a business is rarely the number that changes hands in a partner buyout. What the departing partner actually receives depends heavily on discounts and premiums applied to reflect the specific characteristics of the interest being transferred, not the business as a whole.
Discount for Lack of Marketability (DLOM)
A DLOM reflects the fact that an ownership interest in a private company cannot be sold quickly or easily compared to a publicly traded security. Because there is no ready market, a hypothetical buyer would generally demand a lower price to compensate for that illiquidity. DLOM percentages are supported by empirical studies of restricted stock transactions and pre-IPO transactions, and they vary based on company-specific factors including financial performance, dividend history, and the likelihood of a near-term sale or public offering.
Discount for Lack of Control (DLOC)
A DLOC applies when the interest being valued is a minority stake that cannot unilaterally direct company decisions, declare distributions, or force a sale. A minority interest is generally worth less per unit than a proportionate share of a controlling interest, because the minority holder cannot compel the company to act in ways that would realize that value.
Control Premiums
Conversely, when a buyout involves a controlling interest, or when a departing partner's exit consolidates control in the hands of the remaining owners, a control premium may apply. This reflects the additional value associated with the ability to direct company strategy, management, and capital allocation.
Whether these discounts and premiums apply, and at what magnitude, is one of the most heavily litigated aspects of partner buyout valuations. It is also, as discussed next, the exact area where a properly structured buy-sell agreement can remove the guesswork before a dispute ever starts.
Buy-Sell Agreements: The Document That Should Have Answered This Question Years Ago
A buy-sell agreement is a contractual mechanism, typically embedded in the operating agreement, shareholder agreement, or partnership agreement, that governs what happens to an ownership interest when a triggering event occurs. It should specify the triggering events, the valuation methodology or a fixed price, the payment terms, and who has the first right to purchase the departing interest.
Fixed-Price, Formula, and Appraisal-Based Mechanisms
Buy-sell agreements generally use one of three pricing mechanisms:
- Fixed price, agreed upon annually or periodically by the owners and updated on a set schedule.
- Formula pricing, such as a multiple of EBITDA or book value, applied mechanically at the time of the triggering event.
- Appraisal process, requiring an independent, credentialed valuation at the time of the triggering event, sometimes using a single agreed appraiser and sometimes a three-appraiser mechanism.
Fixed-price and formula mechanisms are administratively simpler but carry meaningful risk: a stale fixed price or a formula that no longer reflects the business's actual growth or decline can become both economically unfair and, as discussed below, unenforceable for federal transfer tax purposes.
Why IRC Section 2703 Can Override Your Agreed Price
Many owners assume whatever price is written into their buy-sell agreement will automatically control for estate and gift tax purposes. That assumption is frequently wrong. Under IRC Section 2703, value is determined without regard to any option, agreement, or restriction fixing the price below fair market value, unless the arrangement meets each of the following:
- It is a bona fide business arrangement.
- It is not a device to transfer property to members of the decedent's family for less than full and adequate consideration.
- Its terms are comparable to similar arrangements entered into by persons in arm's length transactions.
An agreement is generally deemed to satisfy all three automatically if more than 50 percent of the value of the interests subject to the restriction is owned by non-family members bound by the same restriction. Outside that safe harbor, each requirement must independently be supported by the facts.
The 2024 Tax Court decision in Huffman v. Commissioner, T.C. Memo. 2024-12, shows how the comparability requirement gets litigated: the agreement's first two requirements were satisfied, but its pricing formula failed the arm's length comparability test, producing a higher estate tax value than the agreement's stated price. A stale formula or book-value mechanism that no longer reflects economic reality is a recurring point of failure, and periodic independent valuation is generally the safer route to defending an agreed price.
The Connelly Decision and Life-Insurance-Funded Redemptions
In June 2024, the U.S. Supreme Court decided Connelly v. United States, a unanimous ruling affecting buy-sell agreements funded by corporate-owned life insurance. Two brothers owned a closely held corporation with an agreement requiring the company to redeem a deceased owner's shares, funded by insurance the company carried on each brother. The Court held that life insurance proceeds payable to a corporation to fund a redemption are an asset that must be included in the company's value for federal estate tax purposes, and that the redemption obligation does not offset that value as a liability.
The practical effect: a buy-sell agreement funded entirely by corporate-owned life insurance can produce a materially higher estate tax valuation than intended, since the proceeds inflate entity value at the exact moment they fund the buyout. Businesses relying on this structure generally benefit from reviewing whether a cross-purchase arrangement, where surviving partners personally own the insurance, would produce a more predictable result.
Tax Treatment of the Buyout: Structuring the Payments Correctly
How a buyout is taxed depends heavily on entity type and how the transaction is structured, and this is where a valuation conclusion and a tax strategy have to be built together rather than sequentially.
Partnership and LLC Buyouts Under IRC Section 736
When a partnership (including a multi-member LLC taxed as a partnership) buys out a departing partner's interest through liquidation, payments generally fall into two categories under IRC Section 736:
- Section 736(b) payments are treated as a distribution in exchange for the partner's interest in partnership property. These generally produce capital gain or loss to the departing partner and are not deductible by the partnership.
- Section 736(a) payments cover the retiring partner's distributive share of partnership income and guaranteed payments. These are generally taxed as ordinary income to the recipient and are deductible by the partnership, which can meaningfully reduce the after-tax cost of the buyout to the remaining partners.
For partnerships where capital is not a material income-producing factor, such as many professional service firms, payments attributable to unrealized receivables and, unless the partnership agreement specifically provides for a payment with respect to goodwill, goodwill itself are generally excluded from the 736(b) capital gain bucket and instead taxed under 736(a) as ordinary income. This single drafting choice, whether the partnership agreement addresses goodwill, can shift a significant portion of a buyout between capital gain and ordinary income treatment for the departing partner, and between a deductible and non-deductible payment for the partnership.
Corporate Redemptions Under IRC Section 302
Where the entity is taxed as a C or S corporation, a buyout structured as the corporation redeeming the departing shareholder's stock is tested under IRC Section 302. If the redemption is substantially disproportionate, results in a complete termination of the shareholder's interest, or is not essentially equivalent to a dividend, the payment is generally treated as a sale or exchange, producing capital gain or loss. If it fails all three tests, the payment is generally treated as a dividend, taxed as ordinary income to the extent of earnings and profits, with no basis recovery. Attribution rules under Section 318 treat stock owned by certain family members and related entities as constructively owned by the departing shareholder, and can prevent capital gain treatment unless a family attribution waiver is properly executed.
Structuring the Deal: Redemption Versus Cross-Purchase
A buyout can be structured as an entity redemption, where the business itself purchases the departing owner's interest, or as a cross-purchase, where the remaining owners personally purchase the interest. The choice affects basis, financing, insurance funding, and, as discussed above, the Section 2703 and Connelly analysis for family-owned entities.
A cross-purchase generally gives the purchasing partners a stepped-up basis in the acquired interest equal to what they paid, while a redemption does not directly increase the remaining partners' basis. Where a partnership has a valid Section 754 election in effect, a cross-purchase generates a basis adjustment under Section 743(b), and a redemption generates one under Section 734(b), both aligning inside basis with the price actually paid. That adjustment matters more in 2026, because OBBBA permanently restored 100 percent bonus depreciation for qualifying property acquired after January 19, 2025, so a documented basis step-up on depreciable partnership assets can produce an immediate first-year deduction rather than one spread over many years.
The Financing Piece: Installment Sales and the Applicable Federal Rate
Few partner buyouts are paid entirely in cash at closing. Seller-financed installment notes remain one of the most common structures, alongside bank financing and SBA-backed loans. Where a related-party note is used, the interest rate should generally be set at or above the relevant Applicable Federal Rate (AFR) to avoid imputed interest issues under IRC Section 7872. For September 2026, the IRS's published Applicable Federal Rates list the short-term rate at 4.18 percent, mid-term at 4.49 percent, and long-term at 5.12 percent, annual compounding, figures that should be checked against the current month's rate when a note is actually signed.
The Disguised Sale Trap in Phased Buyouts
Partner buyouts structured with a new incoming partner contributing capital shortly before or after a distribution to the departing partner can risk recharacterization under the disguised sale rules of IRC Section 707(a)(2). The One Big Beautiful Bill Act amended this provision in late 2025, confirming the disguised sale rules apply regardless of whether Treasury issues further regulations, closing an argument some taxpayers had relied on. Buyouts funded in part by a new partner's capital contribution generally warrant a specific review of timing before the transaction closes, not after.
What Estate and Gift Tax Planning Adds to a Partner Buyout
Where a buy-sell agreement is triggered by death, or where a partner is gifting or transferring an interest as part of a broader succession plan, the valuation conclusion feeds directly into Form 706 or Form 709 reporting. For 2026, the federal basic exclusion amount is $15,000,000 per individual, up from $13,990,000 in 2025, following the permanent increase enacted under the One Big Beautiful Bill Act, according to the IRS's 2026 inflation adjustments release. The annual gift tax exclusion remains $19,000 per recipient for 2026, confirmed on the same release and on the IRS's what's new page for estate and gift tax.
These figures matter directly here because a departing or deceased partner's interest, valued for buy-sell purposes, generally determines whether an estate owes federal estate tax and how much of the lifetime exemption a transfer consumes. A valuation prepared casually for a buyout can create an unwelcome surprise on a later estate or gift tax filing if the two are not coordinated, which is why Gift and Estate Tax Valuation work and partner buyout valuation should sit with the same team.
Common Mistakes That Turn a Buyout into a Dispute
- Using a fixed price or book-value formula that has not been updated in years. A stale formula is a recurring failure point, economically and for transfer tax purposes, as Huffman illustrates.
- Assuming the buy-sell agreement automatically controls the IRS or estate tax value. Section 2703 requires the agreement to independently satisfy three tests, and family-owned entities rarely qualify for the automatic safe harbor.
- Treating fair market value and statutory fair value as interchangeable. Applying discounts under the wrong standard can produce a number that does not hold up in the applicable forum.
- Ignoring how life insurance interacts with entity value. Following Connelly, a redemption funded by corporate-owned life insurance can inflate company value at exactly the wrong moment.
- Structuring the deal without considering the tax character of the payments. The gap between Section 736(a) and 736(b) treatment, or between a qualifying Section 302 redemption and a disguised dividend, can change the after-tax outcome substantially.
- Setting related-party note interest below the Applicable Federal Rate. This risks imputed interest and gift tax exposure neither party intended.
- Waiting until a triggering event to commission the first valuation. A death, disability, or dispute is the worst possible moment to establish a methodology for the first time.
A Practical Framework for Approaching a Partner Buyout
1. Confirm the governing document and the applicable valuation standard before any number is discussed.
2. Engage a credentialed, independent appraiser rather than relying on an internal estimate.
3. Select and weight the valuation approaches (income, market, asset) based on the nature of the business, documenting the reasoning.
4. Evaluate whether DLOM, DLOC, or a control premium applies, and confirm the standard of value permits those adjustments.
5. Review the buy-sell agreement against the Section 2703 safe harbor, updating stale pricing formulas before a trigger event occurs.
6. Decide on redemption versus cross-purchase, factoring in Section 754 basis adjustments, insurance funding, and family attribution rules.
7. Structure the payment terms, confirming any related-party financing carries interest at or above the current AFR.
Coordinate the valuation with estate and gift tax planning where a death, gift, or family transfer is involved, so one number supports both.
How Virtue Advisors Helps
Virtue Advisors works with business owners, CFOs, and multi-owner partnerships approaching a buyout, whether the trigger is retirement, a shareholder dispute, or estate planning for the next generation.
Independent, credentialed valuations. Every engagement is prepared by a CPA holding the CVA® credential, applying AICPA SSVS and NACVA standards, built to withstand review by the IRS, a bank, or opposing counsel.
Buy-sell agreement review. Evaluating whether an existing agreement's pricing mechanism satisfies the Section 2703 safe harbor, and whether a life-insurance-funded structure carries Connelly-related exposure, before a triggering event forces the question.
Tax structuring alongside the valuation. Modeling the Section 736 or Section 302 tax treatment, the Section 754 election, and the financing terms as part of the same engagement rather than as an afterthought once the price is already set.
Succession and estate integration. Connecting the buyout valuation directly to broader Succession Planning and Trust and Estate Planning work, so ownership transitions are planned years in advance.
Deal structuring support. Working through redemption versus cross-purchase mechanics, financing terms, and closing logistics as part of our broader Transaction Advisory and CFO and Controller Services offerings.
Conclusion
A partner buyout is never really about the number on the closing statement. It is about whether that number can be defended, under the correct valuation standard, against an IRS examiner, a dissenting shareholder's attorney, or a bank underwriter who was not in the room when the price was agreed. The businesses that navigate buyouts smoothly are almost always the ones that treated the buy-sell agreement, the valuation methodology, and the tax structure as one coordinated plan built years before any triggering event, not as three separate problems solved in sequence under pressure.
If your business does not currently have a buy-sell agreement that would satisfy the Section 2703 safe harbor, or if it has been more than a few years since your valuation methodology was reviewed against current law, that gap is worth closing now rather than at the moment a partner retires, disputes, or passes away. Speak with the Virtue Advisors valuation team about a buy-sell agreement and partner buyout readiness review.
Frequently Asked Questions
Jeet Chaudhary
Jeet Chaudhary serves as the Chief Operating Officer at Virtue Advisors, where he leads the firm’s Global Control Centre and oversees end-to-end operational excellence.
