Is Your Buy-Sell Agreement a Ticking Time Bomb? A Practical Audit

How to spot the three most common failure modes in buy-sell agreements — before a triggering event forces the issue.

 

Every business owner with a partner has a buy-sell agreement. Or at least, they should. The agreement is the mechanism that determines what happens to an owner's interest when something disruptive occurs — death, disability, divorce, bankruptcy, retirement, or a simple decision to walk away. It sets the price, the terms, and the funding. It's the document that's supposed to prevent a business dispute from becoming a business disaster.

 

The problem is that most buy-sell agreements were drafted when the business looked very different than it does today. The valuation was set at a fraction of current value. The life insurance coverage was sized for an earlier era. The triggering events were chosen from a template without much thought about the specific risks facing the business. And since the day it was signed, nobody has opened it.

 

The reality, after decades of case law and practitioner experience, is that the typical buy-sell agreement has problems. When a triggering event occurs, those problems will likely prevent the agreement from working the way the owners planned — in terms of pricing, terms, and process.

 

This post walks through the three most common failure modes, the tax consequences most owners miss, and a framework for auditing your own agreement.

 

Failure Mode #1: The Valuation Mechanism Doesn't Reflect Reality

Buy-sell agreements typically establish the purchase price through one of three mechanisms: a fixed price, a formula, or a valuation process. Each has its own way of going wrong.

 

Fixed Price Agreements

Under a fixed-price agreement, the owners agree on a dollar amount and write it into the agreement. The price is certain and known, which feels clean — until you realize that the owners almost certainly haven't updated it since the agreement was signed. The business that was worth $1 million five years ago may be worth $5 million today, but the agreement still says $1 million.

 

When a triggering event occurs — say a partner dies — the surviving partner gets to buy the deceased partner's 50% interest for $500,000 when it's actually worth $2.5 million. The deceased partner's family is shortchanged by $2 million. Or the reverse happens: the business has declined in value, and the surviving partner is contractually obligated to pay a price that far exceeds what the interest is actually worth.

 

The critical question for any fixed-price agreement: is there a fallback provision that triggers a valuation process if the fixed price becomes stale? If the answer is no, you're relying entirely on the owners' discipline to update the price regularly — and in practice, that almost never happens.

 

Formula-Based Agreements

Formula agreements try to solve the staleness problem by establishing a calculation — typically a multiple of revenue, earnings, or book value — that automatically adjusts with the business. The idea is reasonable, but formulas have a shelf life too.

 

A revenue multiple that made sense when the business was a startup may dramatically undervalue or overvalue the company after years of growth, margin changes, or shifts in the industry. Book value, which many agreements rely on, rarely reflects the true economic value of a going concern — it misses intangible assets, customer relationships, brand value, and the earnings power of the business.

 

Key questions to ask about a formula agreement: When was the formula last recalculated? Who performed the calculation? If you ran the formula today using current financial statements, would the result bear any resemblance to what you'd expect the business to actually sell for? And critically — does the agreement specify an alternative pricing resolution if the parties dispute the formula's output?

 

Valuation Process Agreements

A valuation process agreement says that when a triggering event occurs, one or more independent business appraisers will determine the price. This is generally the most robust approach, but it comes with its own pitfalls.

 

The most common issue is ambiguity. The agreement may call for "fair market value" without specifying the standard of value the appraiser should apply, the level of value (are we valuing the whole enterprise or a minority interest?), or whether valuation discounts for lack of marketability or minority status should be applied. These aren't academic distinctions — the difference between the financial control value and the nonmarketable minority value of the same business interest can easily be 40% or more.

 

The best practice among experienced practitioners is what's sometimes called a "Select Now and Value Now" approach. The owners agree on a qualified independent appraiser now, before any triggering event, and that appraiser provides and updates a valuation on a regular basis — annually or every other year. The advantages are significant: the parties know the current price at all times, problems with the valuation mechanism are identified and fixed before a trigger event forces the issue, and when a trigger does occur, the process is already in place and the price is already known.

 

With any of these mechanisms, the fundamental problem is the same: the owners are betting that whatever value the mechanism produces will be favorable to them. But when a triggering event occurs, every owner is on one side of the transaction or the other — buyer or seller — and a price that's favorable to one is unfavorable to the other. The agreement needs to produce a result that's fair to both sides under circumstances neither side can predict.

 

Failure Mode #2: The Funding Is Inadequate

Getting the price right is only half the problem. Someone has to come up with the cash to pay it. This is where many agreements silently fall apart.

 

Buy-sell agreements are typically structured as either a cross-purchase (the remaining owners buy the departing owner's interest personally), an entity redemption (the company itself buys back the interest), or a hybrid of the two. Each structure has different funding requirements and different consequences.

 

Life insurance is the most common funding mechanism, particularly for death-triggered buyouts. But the coverage amounts are almost always based on the business's value at the time the policies were purchased — not its current value. A business that was worth $2 million when the policy was written may be worth $10 million today. If the policy covers $1 million (the departing owner's 50% at old valuation), and the buyout price is $5 million (50% at current valuation), there's a $4 million gap that has to come from somewhere.

 

And life insurance only addresses death. It doesn't help when a partner becomes disabled, gets divorced, files for bankruptcy, or simply decides to leave. For these triggering events, the funding mechanism is often a promissory note — and many agreements are vague about the terms. Is there a required down payment? What's the interest rate — fixed or floating? What's the amortization schedule? Is the note secured? If these terms aren't clearly specified, you're setting up a negotiation under adversarial conditions at the worst possible time.

 

There's also a subtle but important question about how life insurance proceeds interact with the valuation. If the company owns the life insurance policies (as in an entity redemption), the insurance proceeds may increase the appraised value of the company at the time of death — which increases the buyout price — which means the insurance covers an even smaller percentage of the obligation. The agreement should be explicit about whether insurance proceeds are treated as a funding vehicle (excluded from valuation) or a corporate asset (included in valuation).

 

Failure Mode #3: The Triggering Events Don't Match the Real Risks

Most buy-sell agreements address death and voluntary departure. Many address disability. But relatively few address the full range of events that can disrupt a business partnership.

 

Here's a non-exhaustive list of triggering events that a comprehensive buy-sell agreement should at least consider: death, disability, retirement, voluntary resignation, termination, divorce of an owner, personal bankruptcy of an owner, loss of professional license or other disqualification, deadlock between equal owners, a material breach of fiduciary duty, and a request by an owner to transfer shares to a third party.

 

For each triggering event, the agreement needs to answer several questions. Is the buyout mandatory or optional? If optional, who holds the option — the departing owner, the remaining owners, or the company? What's the valuation date — the date of the event, the most recent fiscal year-end, or something else? What are the payment terms? Is the pricing the same for every trigger, or does it vary (for example, a fired partner might receive a different price than a deceased partner)?

 

Divorce is the triggering event that catches the most business owners off guard — and it's often misunderstood. In a community property state like Texas, the divorcing owner's spouse likely has a community property interest in the owner's share of the business. The buyout target in that situation isn't the partner — it's the partner's soon-to-be ex-spouse. Without a buy-sell provision that specifically addresses divorce and requires the company or the other owners to purchase the ex-spouse's community interest, the business can end up with an unwanted new co-owner at the conclusion of the divorce proceedings. This is why well-drafted agreements require each owner's spouse to sign a consent or joinder acknowledging the buy-sell terms at the outset — before any marital dispute arises.

 

The agreement should also address what happens to the departing owner's stock during the period between the triggering event and the completed purchase. Does the departing owner (or their estate) retain voting rights? Are they entitled to distributions? If the company is an S corporation, can the transfer jeopardize the S election? These operational details are often overlooked, but they create real problems in the gap period.

 

The Tax Angle Most Owners Miss

The structure of a buy-sell agreement — cross-purchase versus entity redemption — has significant tax consequences that many owners don't appreciate until it's too late.

 

In a   cross-purchase , the remaining owner buys the departing owner's interest directly. The buyer gets a full cost basis in the purchased interest equal to the price paid. If two 50/50 partners own a business worth $10 million and one dies, the surviving partner buys the deceased partner's 50% for $5 million and gets a $5 million basis in that purchased interest. When the surviving partner eventually sells the whole business, that $5 million basis offsets the gain on the purchased half.

 

In an   entity redemption , the company itself buys back the departing owner's shares under Section 302 of the Internal Revenue Code. The remaining owner's percentage increases (from 50% to 100%, in our example), but their basis in their original shares doesn't change. They still have whatever basis they had before the redemption. When they eventually sell the business, they face a much larger capital gain — potentially hundreds of thousands of dollars in additional tax.

 

Here's a concrete example. Assume two equal partners each have a $500,000 basis in their shares. The business is worth $10 million. One partner dies.

 

Cross-purchase:   The surviving partner pays $5 million for the deceased partner's shares. The survivor's total basis is now $5.5 million ($500K original + $5M purchase). If the survivor later sells the business for $12 million, the gain is $6.5 million.

 

Entity redemption:   The company pays $5 million to redeem the deceased partner's shares. The surviving partner now owns 100% of the company, but their basis is still $500,000. If they later sell for $12 million, the gain is $11.5 million — $5 million more than under a cross-purchase. At a combined federal and state capital gains rate north of 25%, that's over $1.25 million in additional tax.

 

This doesn't mean cross-purchase is always the right structure. Entity redemptions are simpler to administer, especially with more than two owners, and they avoid the problem of individual owners needing to come up with personal funds for the buyout. But the tax implications need to be understood and planned for — not discovered after the fact.

 

Partnership and LLC Buyouts: A Different Set of Rules

The discussion above applies to corporations — C corps and S corps. But many closely held businesses are structured as partnerships or LLCs taxed as partnerships, and the tax rules for buying out a partner are fundamentally different.

 

When a partnership redeems a departing partner's interest, the transaction is governed by Section 736, which splits the payments into two categories. Payments for the partner's share of partnership property (Section 736(b)) are generally treated as a distribution and taxed as capital gain to the departing partner. Payments for the partner's share of unrealized receivables and unstated goodwill — if not specifically addressed in the partnership agreement — can be treated as ordinary income to the departing partner under Section 736(a) and may be deductible by the partnership. The classification matters enormously: the difference between capital gain and ordinary income treatment can swing the departing partner's tax bill by tens or hundreds of thousands of dollars, and the deductibility question directly affects the remaining partners' after-tax cost of the buyout.

 

When the remaining partners buy the departing partner's interest directly (the partnership equivalent of a cross-purchase), the transaction is treated as a sale under Section 741. The departing partner recognizes capital gain (except to the extent of "hot assets" — unrealized receivables and inventory items under Section 751, which are taxed as ordinary income). The buying partners get a cost basis in the purchased interest.

 

But here's the critical issue for partnerships: the buying partners' new outside basis doesn't automatically flow through to the partnership's inside basis in its assets. Without a Section 754 election in place, the partnership's books don't change — which means the remaining partners may not get the full tax benefit of the price they paid. A Section 754 election triggers a basis adjustment under Section 743(b) that aligns the buying partners' share of inside basis with what they actually paid. This is the partnership equivalent of the cross-purchase basis step-up in the corporate context — and it's the single most commonly overlooked tax provision in partnership buy-sell planning.

 

The partnership agreement and the buy-sell agreement should address whether a Section 754 election will be made (or is already in effect), how the buyout payments will be characterized under Section 736, and whether the agreement specifically allocates payments to goodwill (which affects the 736(a) versus 736(b) split). If your business is an LLC or partnership, these provisions are just as important as the valuation and funding mechanics — and they're the provisions most often missing or poorly drafted.

 

A Scenario That Brings It All Together

Consider two 50/50 partners, Mike and Sarah, who started a construction company 15 years ago. At the time, they had their attorney draft a buy-sell agreement. The agreement used a fixed price of $400,000 — the appraised value of the business at the time — and was structured as an entity redemption. They purchased $200,000 life insurance policies on each other. The agreement covered death and voluntary departure but didn't address disability, divorce, or deadlock.

 

The business has grown. It now generates $3 million in annual revenue and is worth roughly $4 million. Mike dies unexpectedly.

 

Here's what happens under the existing agreement: the company redeems Mike's 50% interest for $200,000 (his share of the $400,000 fixed price). The $200,000 life insurance policy covers the payment. Mike's family receives $200,000 for an interest worth $2 million. Sarah now owns 100% of a $4 million business, having paid one-tenth of the fair value for Mike's half.

 

If Mike's family challenges the buyout price, they'll likely prevail — but only after expensive litigation that damages the business and the relationship. If the agreement had included a valuation process fallback, a regular price update mechanism, adequate insurance coverage, and a cross-purchase structure (giving Sarah a basis step-up), both sides would have been protected and the transition could have been handled cleanly.

 

Auditing Your Own Agreement

If you have a buy-sell agreement — and especially if you haven't reviewed it in more than two years — here's a framework for a basic audit:

 

Valuation:   What pricing mechanism does the agreement use? When was the price last set or updated? If you ran the mechanism today, would the output be within a reasonable range of the business's actual fair market value? Is there a fallback to a formal valuation process if the primary mechanism produces an unreasonable result?

 

Funding:   How is the buyout funded? If life insurance, what's the coverage amount and how does it compare to the current buyout obligation? Does the agreement address how insurance proceeds are treated for valuation purposes? For non-death triggers, what are the note terms?

 

Triggers:   What events are covered? Does the agreement address disability, divorce, bankruptcy, and deadlock — or just death and voluntary departure? For each trigger, is the buyout mandatory or optional? Is the valuation date clearly specified?

 

Tax structure:   Is the agreement structured as a cross-purchase or entity redemption? Do you understand the basis consequences of that choice?

 

Operational gaps:   Does the agreement address what happens to voting rights, distributions, and S corporation status during the period between the triggering event and the completed purchase?

 

We built an interactive   Buy-Sell Agreement Health Check   that walks you through these questions and scores your agreement across five categories — Valuation Adequacy, Funding Sufficiency, Trigger Coverage, Tax Efficiency, and Operational Readiness. It takes about three minutes and gives you a clear picture of where your agreement stands and where the gaps are.

 

If your agreement is overdue for a review — or if the health check turns up red flags — it's worth having a conversation before a triggering event forces the issue.

 

Book a consultation with our team.

 

---

 

Disclaimer:   This article is for informational purposes only and does not constitute legal or tax advice. The application of buy-sell agreement structures, Section 302 redemption rules, and Sections 736, 741, 743(b), and 754 depends on individual facts and circumstances. Consult a qualified tax attorney or CPA before making decisions based on this information. Circular 230 Notice: To ensure compliance with requirements imposed by the IRS, we inform you that any U.S. federal tax advice contained in this communication is not intended or written to be used, and cannot be used, for the purpose of avoiding penalties under the Internal Revenue Code.