A partner buyout values a defined ownership interest under the buy-sell agreement and the applicable standard of value, not one-half of what a third party might pay for 100% of the company.
A partner buyout values a defined ownership interest under the buy-sell agreement and the applicable standard of value, not one-half of what a third party might pay for 100% of the company. Control, deadlock, transfer restrictions, each partner’s actual role, insurance proceeds, and any installment note all change the check that can be written. This is educational sale-planning guidance, not a litigation appraisal, tax opinion, or fairness opinion.
What to know before using the headline number
- A partner buyout prices a defined interest under the governing documents, not one-half of a 100% third-party sale.
- Deadlock, licenses, bonding, and rainmaker roles can make a 50/50 interest less useful than the percentage on the cap table implies.
- Normalize both partners’ compensation, perks, and replacement costs before applying any percentage.
- Life insurance, cash, senior debt, and installment notes are funding tools; none of them is automatically the value of the interest.
- This planning file is not a litigation appraisal, tax opinion, or fairness opinion. Disputed or filing assignments need the professionals those jobs require.
Half the equity is not half of a 100% sale price
A third-party sale of the whole company prices a control package: the ability to hire and fire, set compensation, sell assets, take distributions, change strategy, and deliver every customer, license, and contract in one closing. The remaining partner who buys a 50% interest does not receive that package. That partner already works inside the company, may already share deadlock, and is not an outside buyer paying for synergies or a clean 100% handoff. Splitting a 100% asking price down the middle usually answers the wrong question.
Define the interest with the same care used for enterprise value versus equity value. Voting rights, economic rights, unvested units, options, personal vehicles, a building in a separate LLC, cash the departing partner will take, equipment loans, underbillings, retainage, and bonding holdbacks all change the equity check even when the operating-business indication is unchanged. A buyout of “half the company” is a purchase of a specified bundle of rights and net assets, not a slogan.
Start with the buy-sell agreement and the standard of value
Read the operating agreement, shareholders’ agreement, or buy-sell before any spreadsheet. Those documents may prescribe a formula, a stated value, a process for selecting an appraiser, a payment schedule, a life-insurance overlay, a noncompete, and a closing mechanic. They may also be silent, stale, or internally inconsistent. The written process controls the parties unless they amend it. A preliminary planning estimate that ignores the agreement is a conversation piece, not a buyout price.
The purpose of the valuation matters as much as the math. A negotiated buyout between partners who still speak is not the same assignment as a disputed squeeze-out, a marital-property case, or a gift-tax filing. Revenue Ruling 59-60, as reproduced in the IRS valuation job aid for closely held stock, lists factors such as earning capacity, dividend-paying capacity, book value, and the nature of the business. That material is a factor list, not a calculator, and the job aid itself is not legal authority. This article does not value a litigated interest and does not replace a qualified appraiser when the assignment requires one.
Control, deadlock, and who actually produces the work
Equal ownership does not always mean equal control, and it almost never means equal contribution. One partner may hold the contractor’s license, the bonding relationship, the estimator’s skill, or the top accounts. The other may run field operations, safety, or equipment. A 50/50 deadlock can reduce the value of each interest relative to a 100% sale, because neither partner can force the decisions a control buyer would make. The opposite can also be true: a documented put-call process with insurance funding can make the interest more transferable than an undocumented handshake.
Discounts for lack of control and lack of marketability are concepts, not lookup tables. The question is what rights the purchased interest actually carries: voting, information, distribution policy, employment, and a path to liquidity. Inventing a percentage from a blog post or a rule of thumb is not analysis. For a negotiated partner buyout, the parties often price the interest by reference to maintainable earnings, the remaining partner’s ability to operate, and the funding source, then document why the result is higher or lower than a naïve split of a 100% indication.
Normalize both partners, not only the one who is leaving
Buyout math fails when only the departing partner’s salary, truck, and travel are added back. The remaining partner’s compensation, family payroll, related-party rent, and personal expenses also have to be recast, because those costs continue. If the departing partner was the estimator or rainmaker, the remaining company needs a replacement cost, not an add-back that pretends the work was free. Bureau of Labor Statistics occupational wage data can be a public starting point for testing market pay; local duties, overtime, and licensing still require judgment.
Construction and other project businesses add work-in-process, underbillings, overbillings, retainage, warranty exposure, and bonded jobs that are not finished. Those items belong in the equity bridge, not as a surprise after the percentage is applied. SBA guidance on acquisitions and current lending procedures can affect whether a remaining partner can finance the purchase with senior debt, how much equity must be injected, and how a seller note is treated. Confirm the actual program rules for the transaction rather than relying on an old hallway version of “SBA will do it.”
Insurance, cash, and installment notes fund different economics
A life-insurance-funded redemption can make a death buyout cash-settled if the policy is in force, owned correctly, and sized to the obligation. If the policy is too small, the company still owes the shortfall. If it is larger than the buyout, leftover proceeds are a separate corporate asset, not automatic extra purchase price. Disability, retirement, and voluntary withdrawal rarely have the same funding. Pricing the interest without a funding plan is how partnerships end up with a number nobody can pay.
An installment buyout converts part of the price into a credit investment in the remaining partner and the company. Interest, amortization, collateral, guarantees, subordination to senior lenders, default remedies, and reporting covenants determine whether the headline price is real. IRS Publication 537 explains federal installment-sale concepts, including contingent payments and the separate treatment of assets sold as part of a business. That publication is not a structure recommendation. Tax, security, and lender issues belong with qualified advisers, and a note that only works if every optimistic job closes is not a completed buyout.
What this planning review is not
A partner-buyout conversation on this site is educational. It is not a certified appraisal, a fairness opinion, a litigation report, a tax valuation, or legal advice about whether a formula is enforceable. Accounting firms, medical practices, and general contractors all use buy-sells, but the licenses, payer enrollment, professional-corporation rules, bonding, and customer-assignment issues differ. Documents needed for a business valuation still apply: financial statements, tax returns, the entity agreement, insurance policies, debt schedules, and evidence of each owner’s duties.
The useful output is a defined interest, a documented earnings base, an equity bridge, a funding map, and a list of issues that require counsel or a qualified appraiser. Partners who still cooperate can often negotiate from that file. Partners who do not should stop treating a planning estimate as a verdict.
Evidence map for a negotiated partner buyout
The remaining partner is buying a specific bundle of rights and net assets. Each issue below should have a document, an owner explanation, and a decision that can be funded.
| Issue | What the owner should assemble | What a buyer is likely to test | Why it changes the decision |
|---|---|---|---|
| What interest is being purchased | Cap table, operating or shareholders’ agreement, vesting, voting versus economic rights, and a list of excluded personal assets. | Match the interest to the buy-sell trigger and confirm no side letters, options, or phantom equity change the percentage. | A 50% label that omits deadlock, unvested units, or a separately owned building is the wrong starting point. |
| Maintainable earnings after both partners | Three years of statements and returns, TTM close, add-back ledger, and a duty map for each owner. | Replace both owners’ labor at market, remove personal items, and restore costs the remaining company still needs. | Adding back only the departing partner overstates the earnings the remaining partner can keep. |
| Project, license, and bonding continuity | License matrix, bond line, WIP, retainage, underbillings, warranty log, and customer assignment terms. | Identify jobs that walk if the departing partner leaves and licenses that cannot be used by the remaining partner alone. | Work that is not transferable should not be capitalized as if a 100% sale had occurred. |
| Equity bridge | Debt schedule, cash to remain, equipment loans, owner receivables, and a working-capital snapshot. | Separate enterprise indication from the check: debt, excess or deficit working capital, and excluded assets. | Half of an enterprise number is not half of proceeds. |
| Funding path | Life and disability policies, bank or SBA term sheets if any, installment draft, collateral, and guarantees. | Size the cash at closing, the note, subordination, and default remedies against downside job flow. | An unfunded headline price is not a completed buyout. |
Worked example: a 50/50 general contractor buyout
This example is hypothetical. Two equal members have operated a general contracting company for 11 years. Trailing revenue is $3.18 million. Combined owner-level earnings before recast are $428,600. Fourteen field employees report through one member; the other member holds the contractor license, estimates most jobs, and originates $2.11 million of the revenue. They have been told the “company is worth about $1.92 million,” so each half should be $960,000. The remaining member cannot write that check. The review reconstructs the interest instead of splitting the slogan.
| Bridge item | Amount | What the record shows | Buyout treatment |
|---|---|---|---|
| Naïve 50% of $1.92 million 100% indication | $960,000 | An undated hallway number with no interest definition | Starting misconception, not a price |
| License and estimating concentration | n/a | Departing member originates $2.11 million and holds the qualifying license | Do not capitalize that book as if the remaining member already replaces it |
| Replacement estimator and qualifying party | $118,400 ongoing | Market pay for the duties, using public wage data only as a starting point | Keep the cost in maintainable earnings; it is not an add-back |
| Personal trucks and travel in both members’ accounts | $76,400 | Tied to ledgers, titles, and mileage; $29,800 is the remaining member’s continuing trucks | Add back only the departing member’s personal portion |
| Equipment fair-value gap versus debt | $51,800 net | Shop list at $133,000 supportable fair value; loans $81,200 | Equity-bridge item, not an earnings multiple input |
| Working-capital gap versus a normal job cycle | $47,500 | Underbillings and retainage exceed billed receivables needed to finish jobs | Reduces cash available at closing if the company must keep operating |
| Life policy on the departing member | $750,000 | In force, company-owned, beneficiary matches the redemption clause | Funds a death trigger; does not set a voluntary-buyout price |
| Proposed 72-month note for the unpaid remainder | TBD after cash | No collateral package or subordination language yet | Treat as credit risk, not as cash |
The naïve $960,000 split fails three tests. It prices a 100% control package neither member can deliver alone. It ignores that the remaining company must pay for estimating, licensing, and rainmaking the departing member currently supplies. It skips the equity bridge for equipment debt and job-cycle working capital.
A planning range would start from recast earnings after market cost for both roles, then apply a 100% going-concern indication only as a reference, not as a number to bisect. The purchased 50% still carries deadlock unless the agreement is amended. Voluntary withdrawal is not funded by the $750,000 life policy. Any installment balance should be sized to cash flow after the replacement hire, debt service, and a slower bid hit rate in the first two seasons.
If the remaining member instead buys using senior acquisition financing, current SBA procedures may limit seller-note terms and require an equity injection. Those rules are a funding constraint, not a valuation method. The partners can still negotiate, but they should negotiate from the interest and the check, not from half of $1.92 million.
Six steps before anyone names a buyout number
Do this work while the partners still share a trailer office. The file should be recalculable by a lender, an appraiser, or successor counsel without relying on memory.
- 01
Pull the governing documents
Collect the entity agreement, buy-sell, insurance policies, cap table, and any side letters. Note the trigger, standard of value, payment terms, and what happens if the formula or stated value is silent.
Deliverable: Clause-and-policy index
- 02
Map each owner’s duties and licenses
List hours, customers originated, licenses, bonds, estimating, field supervision, and who holds vendor and GC relationships. Identify what walks on day one.
Deliverable: Owner-role and license matrix
- 03
Recast earnings for both owners
Build a three-year plus TTM bridge. Adjust personal items, related-party rent, and family payroll, then insert market cost for necessary work. Use the same policy in every period.
Deliverable: Dual-owner normalization schedule
- 04
Build the equity bridge
Debt, cash that stays, equipment, WIP, retainage, underbillings, owner loans, and working capital all sit beside the operating indication.
Deliverable: Enterprise-to-check bridge
- 05
Price the funding stack
Show cash, insurance if the trigger is death or disability, senior debt capacity, and any note. Stress the note against a drop in bid volume.
Deliverable: Sources-and-uses plus downside case
- 06
Write the interest memo
State what is being bought, what is excluded, why the result is not half of a 100% sale, and which issues need counsel or a qualified appraiser.
Deliverable: One-page buyout definition
Where otherwise credible analyses break down
Bisecting a broker’s 100% asking price
Why it matters: The remaining partner does not receive control, synergies, or a complete customer handoff, and may inherit deadlock.
Better approach: Define the interest, recast both owners, and bridge to the check before any percentage is applied.
Adding back the departing partner and ignoring replacement cost
Why it matters: The remaining company still has to estimate, sell, license, and supervise. Pretending that labor is free inflates the price the remaining partner pays.
Better approach: Keep market cost for every duty that continues, whether or not a family member currently performs it.
Treating the life policy as the value of a voluntary buyout
Why it matters: Insurance funds a death trigger when it is in force and matched to the clause. Retirement and withdrawal usually require a different check.
Better approach: Map each trigger to a funding source and size any shortfall explicitly.
Signing a note that only works in the best bidding year
Why it matters: The seller has swapped equity for credit risk in a company the seller no longer controls.
Better approach: Underwrite the remaining partner as a borrower, including subordination, collateral, and a slower hit rate.
What a defensible owner decision looks like
I’m Jason Taken. When two partners ask me what “half the company” is worth, I start by taking the phrase away from them. Half of a 100% sale is a slogan. A buyout is a defined interest, a recast earnings file, an equity bridge, and a funding plan that still works if the next few bids are quieter than the last few.
Accounting firms, medical practices, and contractors all hit this wall in different uniforms—client lists, payer enrollment, licenses, and bonds—but the mistake is the same. They price a control sale that is not happening and then argue about the percentage. Price the interest that is happening.
If you are already in a dispute, this planning article is not your report. Hire counsel and, where the assignment requires it, a qualified appraiser under a named standard of value. If you still share a coffee machine, build the file now, while the numbers can still be explained without a transcript.
Questions owners ask
Is a 50% interest worth half of the 100% sale price?
Usually not. A 100% sale prices control, transferability, and a complete handoff. A partner buying the other half purchases a defined interest, often with deadlock, transfer restrictions, and a different funding path.
Can life insurance set the buyout price?
Only if the agreement says so and the policy actually funds the obligation. Insurance is a funding tool. It is not automatically the value of the interest, and a shortfall still has to be paid from somewhere.
Is a partner-buyout estimate a litigation appraisal?
No. A planning review is educational. Disputed, tax, or court assignments need the applicable standard of value, a defined scope, and, where required, a qualified appraiser and counsel.
Should we use SDE or adjusted EBITDA for a partner buyout?
Use the measure that matches the remaining operating model. If one owner-operator remains and the buyer of the interest is that remaining owner, SDE can be informative after both owners are recast. If a manager must be hired, adjusted EBITDA after market compensation is usually clearer. Write the definition before the percentage.
Does a 50/50 deadlock get a discount?
Deadlock can reduce the usefulness of each interest relative to a 100% control sale, but there is no honest one-size percentage in this article. Document the rights, the history of decision-making, and any put-call process, then decide whether you are negotiating a buyout or hiring an appraiser.
Can the remaining partner use SBA financing?
Sometimes a change-of-ownership structure is available, subject to current program rules, equity injection, seller-debt limits, and underwriting. Those rules can change the cash at closing. They do not tell you what the interest is worth. Confirm requirements with the lender and advisers.
Sources and review date
Last reviewed: September 3, 2026. Sources are linked for context; a national benchmark is not a substitute for local comparable sales or a purpose-specific appraisal.
- IRS valuation job aid and Revenue Ruling 59-60 — Appendix A reproduces Revenue Ruling 59-60 and its closely held business valuation factors; the job aid itself states that it is not legal authority.
- U.S. Small Business Administration: Merge and acquire businesses — Owner-oriented guidance on valuation, agreements, due diligence, and professional support in an acquisition.
- IRS Publication 537: Installment Sales — Explains installment-sale treatment, contingent payments, unstated interest, debt assumptions, and the separate treatment of assets sold as part of a business.
- International Business Brokers Association glossary — Professional definitions for SDE, transaction terms, and Main Street business brokerage concepts.
- U.S. Small Business Administration: Close or sell your business — Current owner guidance on sale planning, valuation approaches, sale agreements, transfer choices, professional advice, and maintaining required records.
- IRS Publication 583: Starting a Business and Keeping Records — Describes recordkeeping and reconciliation practices, including agreement among bank statements, books, and supporting business records.
- U.S. Bureau of Labor Statistics: Occupational Employment and Wage Statistics — A public starting point for testing market-rate replacement compensation; local duties and labor markets still require judgment.
- SBA SOP 50 10 lender and development company loan programs — Current SBA lending procedures; financing rules can affect valuation scope, equity injection, seller debt, and change-of-ownership underwriting.
- Occupational Safety and Health Administration: Small business — Workplace safety resources relevant to labor-intensive, field-service, construction, and manufacturing diligence.