Of all the planning documents that business owners fail to put in place, the buy-sell agreement may be the one whose absence creates the most immediate and concrete harm to both families and businesses. A will can be drafted quickly; a trust can be established in a matter of weeks. But the planning failure that comes from having no buy-sell agreement in a multi-owner business can produce consequences that unfold in real time, in the days and weeks immediately following a founder’s death or disability, in ways that devastate both the business and the deceased founder’s family.

Understanding what a buy-sell agreement does, why it matters, and how it is structured is essential for every business owner who has one or more co-owners. If you have a business partner and you do not have a buy-sell agreement, this article describes a problem that you are currently carrying and that can be resolved with careful legal planning.

What a Buy-Sell Agreement Is

A buy-sell agreement — sometimes called a business continuation agreement or a buyout agreement — is a legally binding contract between the owners of a business that governs what happens to each owner’s interest in the business if a specified triggering event occurs. The most common triggering events are death, disability, divorce, retirement, voluntary withdrawal, and the involuntary transfer of an owner’s interest (for example, through bankruptcy or a judgment creditor’s attempt to seize the interest).

The core function of a buy-sell agreement is to provide a predetermined, legally enforceable answer to the question: what happens to this owner’s interest if they can no longer be part of the business? Without that answer, the question is resolved by negotiation among grieving, stressed, and potentially adversarial parties who may have very different interests. With a well-drafted buy-sell agreement, the answer is clear, the process is defined, the price or pricing mechanism is established, and the funding to execute the transaction is in place. The result is an orderly transition that protects everyone — the deceased owner’s family, the surviving owners, and the business itself.

The Death Scenario Without a Buy-Sell Agreement

To understand why a buy-sell agreement is so important, it helps to trace through exactly what happens when a business owner dies without one. Suppose that two founders — call them Alex and Jordan — each own fifty percent of a company they co-founded. Alex dies. What happens next?

If Alex has a will or a trust, Alex’s equity passes to the designated beneficiary — perhaps Alex’s spouse, Sam. Sam is now a fifty percent owner of the company. Sam and Jordan are co-owners of a closely held business. Sam may have little knowledge of the business, no operational role, and no relationship with Jordan beyond knowing Alex’s stories about work. Jordan, meanwhile, may be managing the company full-time, making daily decisions, and generating most of the value. Jordan is now, in effect, in business with Sam involuntarily. Neither of them chose this arrangement.

This creates immediate tensions. Sam has a fifty percent economic interest in the company and may want distributions, liquidity, or a voice in major decisions. Jordan may not want to make distributions, may need to reinvest earnings in the business, and may resent having a co-owner who contributes nothing operationally. Sam may push for a sale of the company. Jordan may not want to sell, or may not want to sell at a price that Sam would consider adequate. They may disagree on fundamental matters of strategy and governance. And they have no predetermined mechanism for resolving any of these disagreements.

If the company’s governing documents give each fifty percent owner blocking rights on significant decisions — which is common in closely held businesses — then Sam and Jordan effectively have a mutual veto over the company’s most important actions. The company can become ungovernable. Investors lose confidence. Key employees leave. Customers are concerned. What was a valuable business becomes a distressed asset, not because the underlying business failed, but because there was no plan for what happened when one of the founders died.

Jordan may try to buy Sam out, but there is no predetermined price or pricing mechanism. Sam believes the company is worth ten million dollars; Jordan believes it is worth four. Both may have rational bases for their views, because the valuation of a closely held company is inherently subjective. They engage appraisers who disagree. They negotiate. They litigate. Meanwhile, the company continues to suffer. The buyout, if it ever happens, may occur at a price that is lower than what either party wanted, after years of legal fees and business disruption.

This scenario is not a hypothetical. It occurs regularly in closely held businesses of all types — in law firms, medical practices, technology startups, family businesses, and professional service firms. The structure of the problem is the same every time: one owner dies, their interest passes to an heir who has no operational role, and the surviving owner finds themselves in business with a stranger who has different interests and different time horizons. The only thing that reliably prevents this outcome is a buy-sell agreement executed before it is needed.

The Three Basic Structures of a Buy-Sell Agreement

Buy-sell agreements are structured in three primary ways, each of which allocates the purchase obligation differently among the parties.

In a cross-purchase agreement, the surviving owners agree to purchase the deceased owner’s interest from their estate or beneficiaries. Each owner agrees to buy out the others’ interests. In a company with two owners, Alex agrees to buy Jordan’s interest if Jordan dies, and Jordan agrees to buy Alex’s interest if Alex dies. The surviving owner pays the purchase price personally, or using life insurance proceeds from a policy that the surviving owner holds on the other owner’s life.

In an entity-purchase agreement (also called a redemption agreement), the company itself agrees to purchase the deceased owner’s interest from the estate or beneficiaries. The company pays the purchase price, using its own cash reserves or life insurance proceeds from a policy that the company holds on the owner’s life. The surviving owners’ ownership percentages increase automatically as a result of the redemption, because the purchased interest is retired.

In a hybrid agreement, both the company and the surviving owners have rights to purchase the deceased owner’s interest, in a specified order or with a specified allocation. The company typically has the first right to purchase, and the surviving owners have the right to purchase any portion that the company does not purchase. Hybrid agreements provide flexibility and can accommodate situations where the company has liquidity to purchase some portion of the interest but not all of it.

The choice of structure has tax implications that should be carefully analyzed with a tax advisor. Cross-purchase agreements generally produce a more favorable tax basis step-up for the surviving owners than entity-purchase agreements. But cross-purchase agreements become administratively complex when there are more than two owners, because each owner must hold a separate policy on each other owner’s life. The right structure depends on the number of owners, the relative values of each owner’s interest, the tax situation of the owners and the company, and the practical administration of the life insurance funding.

How the Purchase Price Is Determined

One of the most critical provisions of any buy-sell agreement is the mechanism for determining the purchase price. A buy-sell agreement that defines the triggering events and the obligation to buy but leaves the price to be negotiated at the time of the event has resolved only part of the problem. The price dispute is often where the real conflict occurs.

There are three primary approaches to establishing the purchase price in a buy-sell agreement. The fixed price approach sets a specific dollar amount in the agreement, with a mechanism for updating it periodically. This approach is simple, but it requires the owners to regularly update the stated price — and if they forget, the fixed price can quickly become dramatically out of date as the business grows or changes. Many business owners sign an agreement with a fixed price and never update it, leaving the price at a number that reflects the business’s value years ago rather than its current value.

The formula approach calculates the price using a predetermined formula, such as a multiple of EBITDA (earnings before interest, taxes, depreciation, and amortization), a multiple of revenue, or a book value calculation. Formula approaches automatically update as the company’s financial metrics change, but they may produce a price that does not accurately reflect the market value of the business if the formula does not align with how buyers in the relevant industry actually value companies.

The appraisal approach provides that the price will be determined by an independent appraisal at the time of the triggering event, or by a panel of appraisers if the parties cannot agree on a single appraiser. This approach has the advantage of producing a current and market-based valuation, but it adds time, cost, and uncertainty to the process. An appraisal after a founder’s death takes time that the family may not have, and contested appraisals can lead to the same negotiation disputes that the buy-sell agreement was meant to avoid.

For most closely held businesses, a combination approach — starting with a formula that approximates market value, with an appraisal as a backup if the parties dispute the formula result — often produces the best balance of certainty and accuracy. Whatever approach is chosen, the owners should review and affirm the valuation mechanism at regular intervals, and certainly after each significant change in the business’s circumstances.

How Life Insurance Funds the Agreement

Knowing that the company or the surviving owners have agreed to purchase the deceased founder’s interest does not solve the problem of how they will pay for it. A founder’s equity interest may be worth millions of dollars. If the obligation to purchase that interest arises at death, the company or the surviving owner may not have the liquid assets to fund the purchase. This is where life insurance plays its essential role.

Life insurance is the most common mechanism for funding buy-sell agreements, because it provides exactly the right characteristics: it is available at the moment it is needed (death), it is payable in cash, it is tax-free to the recipient (life insurance death benefits are generally excluded from the beneficiary’s income for federal income tax purposes), and it can be sized precisely to match the expected buyout obligation.

In a cross-purchase structure, each owner purchases a life insurance policy on the other owner’s life, names themselves as the beneficiary, and uses the proceeds to fund the purchase of the other owner’s interest if that owner dies. In an entity-purchase structure, the company purchases a life insurance policy on each owner’s life, names the company as the beneficiary, and uses the proceeds to fund the redemption of the deceased owner’s interest.

The amount of life insurance purchased should be aligned with the expected buyout obligation, which is determined by the valuation mechanism in the buy-sell agreement. As the company grows and the value of each owner’s interest increases, the life insurance coverage should be reviewed and increased accordingly. A buy-sell agreement funded with life insurance that was sized five years ago may be seriously underfunded today if the company has grown significantly in the interim.

Disability buyout insurance is an equally important but often overlooked complement to the life insurance funding. Many buy-sell agreements include disability as a triggering event — if a founder is permanently disabled and unable to contribute to the business, the other owners have the right or obligation to purchase their interest. But disability is a different risk than death: the disabled owner is still alive, may be monitoring the business, and has personal living expenses and medical bills. Life insurance does not address this situation. Disability buyout insurance is a specific product designed for this purpose: it provides a cash payment to fund the buyout of a disabled owner’s interest after a specified waiting period.

Coordination with the Estate Plan

A buy-sell agreement and a founder’s personal estate plan must be coordinated carefully. The buy-sell agreement may determine that the purchase price for the founder’s interest is calculated using a specific formula, but the estate plan may depend on the founder’s interest having a different value for estate tax purposes. The IRS has specific rules about whether a price established in a buy-sell agreement is respected for estate tax valuation purposes — and if the agreement does not meet those rules, the IRS can value the interest at a higher amount than the contractual price, producing an estate tax bill that the family cannot fund with the buyout proceeds.

The general rule is that a buy-sell agreement will be respected for estate tax purposes if it represents a bona fide business arrangement, is not a device to transfer value to the decedent’s heirs for less than full and adequate consideration, and its terms are comparable to similar arrangements entered into by unrelated parties at arm’s length. If the buy-sell agreement was established primarily as an estate planning device to depress the estate tax value of the business — rather than as a genuine business arrangement between the co-owners — the IRS may challenge the agreed price.

For this reason, buy-sell agreements should be drafted with input from attorneys who are familiar with both business law and estate tax planning, and the valuation mechanism should be designed to reflect fair market value rather than to artificially minimize estate tax liability.

The Right Time to Put a Buy-Sell in Place

The right time to establish a buy-sell agreement is at the beginning of the business relationship, when all of the co-founders are healthy, optimistic, and aligned in their goals. At that point, the negotiation is collaborative rather than adversarial, the business’s value is relatively low (making the life insurance funding affordable), and there is no immediate emotional urgency. Everyone wants to get the agreement right, and everyone is willing to engage thoughtfully with the mechanics.

The wrong time to establish a buy-sell agreement is after a co-founder has been diagnosed with a serious illness, after a significant disagreement has arisen among the co-founders, or after a major increase in the company’s value has made the life insurance funding prohibitively expensive. At that point, the negotiation may be contentious, the insurable interest questions may be complicated, and the co-founder in poor health may be uninsurable. The opportunity to do this easily and well has passed.

If you have a business partner and do not have a buy-sell agreement, the time to address that gap is now. The conversation may feel unnecessary — no one likes to discuss death or disability in the context of a business relationship they hope will be long and productive. But the alternative — leaving the question unresolved and allowing a catastrophic outcome to unfold without any plan — is a far more serious problem for everyone involved. A well-drafted buy-sell agreement is an act of respect for your partner, for your family, and for the business you have built together.