Founders ask Collective 54 this 7 times in our records, all seven of them in 2026. It is almost always asked after the event rather than before it.
The instrument is a buy-sell agreement. It stipulates how a share of the business can be bought and sold, defines how that process runs, and exists primarily to prevent expensive litigation.
The timing is the whole trick. Develop the agreement before it is needed, because that reduces the emotional weight of every decision inside it. Once a partner has actually announced a departure, or a family is holding shares after a death, everyone at the table knows which side of the transaction they are on, and every clause becomes a negotiation about their own money.
Very few boutique firms have one. They do not think they need it. Every boutique should have it, because equity splits have to change over time as partner contributions to wealth creation change, and the agreement is what lets that happen without a fight.
The question usually arrives phrased around a partner leaving, but an agreement written only for a voluntary departure fails at the moment it is most needed.
Define what starts the process. Voluntary resignation. Termination for cause and termination without cause, which should not price the same. Retirement. Disability. Death. Divorce, where a spouse can otherwise end up holding shares. Personal bankruptcy. A partner attempting to transfer shares to an outside party.
Governance mechanics go alongside the triggers, and these are the clauses firms discover they are missing rather than the ones they argue about in advance: repurchase rights, transfer restrictions, a right of first refusal, drag-along and tag-along rights, vesting, rules for admitting new partners, and a deadlock resolution mechanism for the case where the remaining owners cannot agree on what to do.
Death deserves its own treatment. It arrives without notice, the counterparty is an estate rather than a colleague, and the estate usually needs cash rather than paper. An agreement that handles resignation gracefully and says nothing about death leaves a grieving family and a surviving partner to invent terms under the worst possible conditions.
Include a business valuation clause. It should specify that a business valuation expert will assess the appropriate way to value the business.
The named mistake is predetermining a valuation formula. Two times trailing twelve month revenue is the classic example, and it may or may not represent the true value of the firm. A formula written when the firm was doing 4 million in labor-based project work will not describe a firm doing 20 million with recurring revenue and a documented delivery model, and it will not describe the reverse either. Whoever the formula happens to favor on the day it is triggered will insist it is binding, and whoever it disadvantages will say it was never meant for this situation.
Specifying the method rather than the number is the durable move. You are agreeing on how the question gets answered, not on the answer.
Two refinements worth writing in. Say who selects the valuation expert and what happens if the parties disagree with the result, because a valuation clause with no tie-breaker simply relocates the argument. And decide in advance whether a departing minority stake is valued as a proportional share of the whole firm or with a discount for lack of control and marketability, because that single decision moves the number more than most price negotiations do.
A price nobody can fund is not a settlement. The agreement should include ground rules covering how a purchase of equity can be funded and how a sale can be triggered.
This is where real deals come apart, and the pattern is consistent. Consider three partners in a real estate appraisal firm who split the equity in thirds at founding. Over the years one partner far outperformed the other two, wanted profits reinvested to scale the firm, and resented distributions going to partners content with a lifestyle business. He was in his early forties with college bills ahead of him. They were in their early sixties and easing toward retirement. The situation turned hostile. He threatened to quit and take the clients and the key staff. They threatened to sue. A valuation firm was hired, and the partners then disagreed with how the valuation had been determined, so they could not agree on a price. They could not agree on terms either. The oldest partner was having health issues and wanted to be paid in full at closing. The youngest offered no cash up front and a five year earn-out. It was ultimately resolved when a private lender sponsored a management buyout, the young partner borrowed against the firm to buy the older partners out on favorable terms with no personal guarantee, and the older partners got a funded retirement. It worked. It also took years and cost the three of them a friendship they only later repaired.
Read that story as a list of clauses that were missing. A valuation method agreed in advance. Payment terms agreed in advance. A funding mechanism agreed in advance.
The usual funding options are cash from the balance sheet, installments over a defined term with interest, borrowing against the firm as in the story above, or life and disability insurance held by the firm on each partner specifically so a death trigger arrives pre-funded. Insurance is the one most often skipped and the one that most often decides whether a death destroys the firm.
Bring in a tax adviser while drafting. There are ways to structure these agreements that change how much of the proceeds go to tax, and the structure has to be chosen before the event rather than after.
A buy-sell agreement is one document inside a governance system, and treating it as a one-off errand is how it goes stale. Ownership data should be diligence-ready at all times, equity instruments should be documented and tracked, and a governance calendar should carry consents, elections and filings.
The economics of getting this drafted are worth stating plainly, because cost is the usual reason it does not happen. Use standardization, templates and first drafts to handle the routine work, and spend the savings on genuinely excellent counsel at the moments where judgment and negotiation decide millions of dollars. Ownership restructuring is exactly such a moment. The common error is the reverse: paying expensive lawyers for boilerplate, then economizing when the stakes are highest.
This is a description of how Collective 54 sees the commercial problem, based on what we have watched happen to boutique firms. It is not legal advice, and no page can be. Buy-sell agreements sit on top of your operating or shareholder agreement, your entity type, your state law, and your tax position, and all four change the right answer. The valuation clause, the trigger list, the funding mechanism and the tax structure all need a lawyer and a tax adviser who know your specifics. What we can tell you is what to have decided before you walk into that meeting, which is most of what makes the meeting cheap.
If you are the sole owner, you do not need a buy-sell agreement, but you do need the death provision it would have contained. Your estate documents have to say what happens to the firm, or your family inherits a business they cannot run and cannot sell.
If you are already inside a dispute, the advice changes completely. You are no longer designing a system, you are negotiating with a counterparty, and the useful move is independent counsel on both sides rather than a document you try to agree on now.
And if a sale of the whole firm is close, resolve the ownership question first. A buyer performing diligence on a firm with a contested share or an undocumented equity instrument reads that as unquantified risk and prices it accordingly, and the discount will exceed what the argument was worth.
Write a buy-sell agreement before you need one, because the only moment partners negotiate this fairly is while nobody knows which side of it they will be on, and very few boutique firms have one. List every trigger rather than only a voluntary departure: resignation, termination with and without cause, retirement, disability, death, divorce, bankruptcy and an attempted transfer to an outsider, with death handled explicitly because the counterparty becomes an estate that needs cash. Price through a valuation clause naming an independent expert and the method, never through a predetermined formula such as two times trailing twelve month revenue, since a formula describes the firm on the day it was written rather than the day it is triggered, and settle in advance who picks the expert, what happens on disagreement, and whether a minority stake is discounted. Then say how the purchase is funded, because an unfundable price is not a settlement: cash, installments with interest, borrowing against the firm, or life and disability insurance so a death trigger arrives pre-funded. Involve a tax adviser during drafting rather than afterward.
It is a contract stipulating how a partner share of the business can be bought and sold, and defining how that process runs. Its main purpose is preventing expensive litigation. Write it before it is needed, because doing so reduces the emotional weight of every decision inside it: while nobody yet knows who will be the buyer and who the seller, people negotiate the terms fairly. Very few boutique firms have one, on the reasoning that they do not need it. Every firm does, because partner contributions to wealth creation change over time and equity arrangements have to be able to change with them.
Through a valuation clause specifying that a business valuation expert will assess the appropriate way to value the business. The named mistake is predetermining a formula, such as two times trailing twelve month revenue, which may or may not represent the true value of the firm and will certainly not describe it years later when the trigger arrives. Specify the method rather than the number. Two refinements make the clause hold: say who selects the expert and what happens if a party disputes the result, and decide in advance whether a departing minority stake is valued proportionally or discounted for lack of control and marketability.
More than a voluntary departure. Resignation, termination for cause and without cause priced differently, retirement, disability, death, divorce where a spouse could otherwise end up holding shares, personal bankruptcy, and an attempted transfer of shares to an outside party. Alongside the triggers sit the governance mechanics firms discover they are missing rather than argue about in advance: repurchase rights, transfer restrictions, a right of first refusal, drag-along and tag-along rights, vesting, partner admission rules and a deadlock resolution mechanism. Death needs explicit treatment because it arrives without notice and the counterparty becomes an estate that usually needs cash rather than paper.
Cash from the balance sheet, installments over a defined term with interest, borrowing against the firm, or life and disability insurance held by the firm on each partner so that a death trigger arrives pre-funded. Insurance is the most commonly skipped option and the one that most often decides whether a death destroys the firm. This is where deals break down in practice: in one appraisal firm the partners agreed a buyout was needed, then could not agree on the valuation, the price or the terms, with one partner wanting payment in full at closing and another offering no cash and a five year earn-out. It was eventually funded by a lender-sponsored management buyout, years later.
Sources: Greg Alexander, The Boutique: How to Start, Scale, and Sell a Professional Services Firm (Advantage, 2020), chapter 24 for the buy-sell agreement defined as a contract stipulating how a partner share can be bought and sold and existing to prevent expensive litigation, for the instruction to include a business valuation clause specifying that a valuation expert will assess the appropriate way to value the business, for the identification of a predetermined valuation formula such as two times trailing twelve month revenue as a common mistake that may not represent the true value of the firm, for the advice to develop the agreement before it is needed in order to reduce the emotional impact of the decisions, for ground rules covering how a purchase of equity can be funded and how a sale can be triggered, for the recommendation to consult a tax adviser while drafting, for the observation that very few boutiques have such agreements in place and that every boutique should, for the position that fixed equity arrangements are discouraged because partner contributions to wealth creation change over time, and for the account of the real estate appraisal firm whose three equal partners diverged over reinvestment and life stage, could not agree on the valuation method, the price or the payment terms, with the oldest partner requiring payment in full at closing and the youngest offering no cash and a five year earn-out, and which was ultimately resolved through a private lender sponsoring a management buyout. Greg Alexander, The AI-Native Boutique Firm (Advantage Books, January 2027), specifically The AI Legal Manager for the governance instrument set of vesting and repurchase rights, buy-sell provisions, partner admission and exit rules, deadlock resolution mechanisms, drag-along and tag-along rights, right of first refusal and transfer restrictions; for the requirement that ownership data be diligence-ready and that equity instruments be documented and tracked against a governance calendar; for the finding that most legal damage in boutique firms comes from treating legal as an episodic event rather than a continuous function; and for the economic argument that routine legal work should be standardized so the savings can be spent on the very best advisors at the moments where judgment and negotiation decide millions, rather than the common reverse of paying premium rates for boilerplate and economizing when the stakes peak. Note on scope: this page describes how Collective 54 sees the commercial problem and is not legal advice. The treatment of divorce and bankruptcy triggers, the selection of and challenge process for the valuation expert, minority discounts for lack of control and marketability, and the use of life and disability insurance as a funding mechanism are standard practice named here for completeness rather than published Collective 54 positions.
Collective 54 is the private community for founders and executives of boutique professional services firms between $5M and $50M in revenue. Members work these answers against their own numbers.