A buy-sell agreement is a binding contract among a business’s owners that fixes in advance what happens to an owner’s share when they die, become disabled, divorce, retire, or leave. It obligates a sale at a preset price, and works only when it is funded — usually with life insurance — so the cash is there when a trigger fires.
Every business built with a partner rests on an unspoken assumption: that the two of you will keep showing up. It is a good assumption right up until the day it fails — and it can fail because someone dies, but far more often it fails because someone gets sick, goes through a divorce, or simply decides they are done. A buy-sell agreement is the one document that decides, calmly and in advance, what happens to an owner’s share when any of that arrives. That is why we think of it as a business owner’s best friend: it is the friend you hope you never need, quietly holding the whole thing together.
Most owners we meet are in one of two camps. Either they never put a buy-sell in place at all, and are one bad day away from being in business with a former partner’s spouse, or they signed one years ago, filed it in a binder, and never funded it — which means that when the day comes, the obligation is real but the money to honor it is not. Both are fixable. Neither fixes itself.
This is the practitioner’s walk-through of what a buy-sell agreement actually is: the events that can trigger it, the two ways it is commonly structured, how the price gets set, and the part that decides whether it works at all — the funding. The legal drafting belongs to your attorney and the tax treatment to your CPA. The funding is our lane, and it is the part that most often gets skipped.
Quick Reference
What a Buy-Sell Agreement Does, in Brief
It pre-decides the transfer — a contract among owners that fixes who buys a departing owner’s share, at what price, and how the purchase gets paid for.
It answers more than death — disability, divorce, retirement, bankruptcy, and a partner who simply wants out can all trigger it.
Two common structures — cross-purchase (the owners buy each other) or entity redemption (the business buys). The choice carries real tax consequences.
The price needs a method — a fixed price, a formula, or an appraisal, agreed in advance and kept current so it is not stale when it matters.
Funding is what makes it real — an unfunded agreement is a promise with no money behind it; life insurance is the most common way to guarantee the cash is there on the day it is needed.
Practitioner Take
A Buy-Sell Is Only as Good as the Money Behind It
After more than two decades helping owners put these arrangements together, we can tell you where they go wrong, and it is almost never the drafting. The agreements that fail are the ones that were treated as a legal formality — signed, filed, and forgotten — instead of a plan that has to actually work on the worst day of someone’s life. Three things separate an agreement that holds up from a piece of paper that does not.
Draft it and fund it. The document tells everyone who must buy and at what price. It does not produce the cash. When an agreement fails, it is almost always because nobody put money behind the promise — so the survivors are left borrowing, draining the company, or writing a check they cannot comfortably write. The drafting is your attorney’s job; the funding is ours, and it is the part that gets skipped.
The triggers that fire most often are not death. Death gets all the attention, but disability, divorce, and a partner who wants to retire or move on come up far more frequently. A good agreement covers all of them — and the way you fund a lifetime buyout is different from the way you fund a buyout at death.
A stale price can be worse than no price. An agreement that fixes the value at a number set five years ago can shortchange a family or bankrupt the survivors. Set a valuation method everyone agrees to, revisit it on a schedule, and keep the funding sized to it.
None of this is complicated once someone walks it with you. It just rarely gets walked all the way to the end, because the last step — making sure the money is really there — is nobody’s favorite conversation. That is exactly the step we make sure is real.
What a Buy-Sell Agreement Actually Is
A buy-sell agreement is a binding contract among the owners of a business — and sometimes the business itself — that answers a single question in advance: when an owner leaves, whether by death, disability, retirement, or any other exit, what happens to their share? A well-drafted agreement obligates the departing owner or their estate to sell, obligates the remaining owners or the company to buy, and fixes the price or the method for setting it. It turns a moment that would otherwise be an emotional, high-stakes negotiation into a transaction everyone already agreed to while heads were cool.
The easiest way to picture it is as a will for your ownership stake, or a prenup for the partnership. Without one, a business interest is simply property: when an owner dies, their share passes to their estate and then to their heirs, and the surviving owners can find themselves running the company alongside a former partner’s family. We walk through that exact scenario in what happens to your business if your partner dies. A buy-sell closes that door before it can open, and it does the same for the quieter exits that never make the estate-planning brochures.
The Triggers: It Is Not Just Death
The most common mistake owners make is thinking of a buy-sell as a death document. Death is one trigger, and the most dramatic, but it is not the one that fires most often. Practitioners often talk about the “five D’s” — death, disability, divorce, departure, and disqualification or deadlock — because each is a way an owner can stop being a functioning partner, and each leaves the others with the same problem: an ownership stake in the hands of someone who should not, or does not want to, hold it. Here is what each trigger threatens, and how a funded agreement answers it.
Trigger
What it threatens
How a funded buy-sell answers it
Death
The share passes to heirs who may not want, or be able, to run the business
The death benefit buys the share; the family gets cash, the survivors keep control
Disability
An owner can no longer work but still owns their stake and may need income
A pre-set buyout (often funded with cash value or disability buy-out coverage) moves the share cleanly
Divorce
A share — or voting control — can end up split with a former spouse
The agreement forces the interest back to the owners rather than into a divorce settlement
Departure
A partner retires or resigns and wants to cash out an illiquid share
A scheduled or funded lifetime buyout lets them exit without starving the business
Disqualification / deadlock
An owner loses a required license, goes bankrupt, or the partners fall out
The agreement provides an orderly, pre-priced way for one side to buy the other
Illustrative of how each trigger is commonly handled; the exact triggers, definitions, and remedies depend on the agreement and applicable law. Not legal or tax advice.
Two things follow from that table. First, an agreement that only addresses death leaves the more frequent exits — disability and voluntary departure — unplanned. Second, the funding has to match the trigger. A death buyout is funded by a death benefit; a lifetime buyout at retirement or disability is funded while everyone is still living, which is one of the reasons cash value life insurance keeps showing up in these arrangements — the same policy can pay a death benefit or provide accessible cash for a living buyout.
Two Ways to Structure It: Cross-Purchase vs. Entity
Once you have decided you need an agreement, the next question is who does the buying. There are two common answers, and the choice is not cosmetic — it changes the tax treatment, the number of policies involved, and how the business’s value is affected.
In a cross-purchase, the owners buy each other out directly. Each owner holds a policy on every other owner, pays those premiums personally, and receives the proceeds personally to complete the purchase. It is clean, it keeps the insurance out of the business, and it gives the surviving buyer a valuable step-up in cost basis on the shares they acquire. We cover the mechanics in detail in what is a cross-purchase buy-sell agreement. Its weakness is arithmetic: the number of policies required grows fast as owners are added, because every owner needs a policy on every other owner. The formula is N times (N minus 1).
TIPB Analysis
Why cross-purchase gets unwieldy: policies needed as owners grow
A cross-purchase requires N × (N − 1) policies — one from each owner on every other owner.
05101520Policies required2612202 owners3 owners4 owners5 ownersNumber of owners in the business
Policy counts from the N × (N − 1) cross-purchase formula. Structures such as a trusteed cross-purchase or an insurance LLC can reduce the policy count; the right approach is a legal and tax decision for your attorney and CPA.
In an entity redemption, the business itself is the buyer. The company owns one policy on each owner, pays the premiums, and uses the proceeds to buy back the departing owner’s share. That is far simpler when there are several owners — one policy per owner instead of a web of them — but it comes with its own wrinkle. A 2024 Supreme Court decision, Connelly v. United States, held that when a corporation owns the insurance and uses it to redeem a deceased owner’s shares, the death benefit counts toward the company’s value for estate-tax purposes and is not offset by the obligation to buy the shares back. For owners whose estates are near the exemption, that can matter, and it is one reason the cross-purchase structure is often preferred for smaller ownership groups. We touch on Connelly and the current exemption in what happens to your business if your partner dies.
Cross-purchase
Entity redemption
Who buys the share
The surviving owners, individually
The business itself
Who owns the policies
Each owner, on every other owner
The business, one per owner
Policies required
N × (N − 1) — grows fast
One per owner
Cost-basis step-up for buyers
Yes — a real tax advantage
Generally no
Best fit
Two or three owners
Several owners
Watch-out
Policy count and transfer-for-value rules
Insurance can raise the company’s estate-tax value (Connelly)
A high-level comparison, not a recommendation. Hybrid and trusteed structures exist, and the right choice depends on the number of owners, the entity type, and the tax situation — decisions for your attorney and CPA.
Setting the Value — and Keeping It Current
An agreement is only as fair as the number inside it, so the owners have to decide how the business will be valued when a trigger fires. There is no single right method, but there are a few common ones. A fixed price is the simplest: the owners agree on a value and update it on a regular schedule. A formula ties the value to the numbers — a multiple of earnings or revenue, or book value — so it updates itself as the business changes. An independent appraisal at the time of the event costs more and takes longer, but it produces a defensible number when the stakes are high or the owners are likely to disagree.
Whatever method you choose, the danger is the same: a value that goes stale. We have seen agreements that still carried a fixed price set years earlier, back when the business was a fraction of its current size. When an owner died, that old number either cheated the family out of what the share was really worth or forced the survivors to buy at a figure that no longer reflected reality. A good agreement names a method, requires the owners to revisit it — annually, or every couple of years — and keeps the funding sized to the current value. An agreement you set and forget is one that quietly stops matching the business it is supposed to protect.
Funding: The Part That Gets Skipped
Here is the failure we see most often, and it is a quiet one. A business has a buy-sell — it is in the binder, it was drafted years ago, everyone remembers signing it — but it was never funded. On paper the survivors are obligated to buy a seven-figure share. In reality, on the day the obligation triggers, the money has to come from somewhere. There are really only four places it can come from, and three of them hurt.
The owners can try to pay out of company cash, which drains the business precisely when it is most fragile. They can take a loan, assuming a bank will lend to a company that just lost half its leadership. They can agree to installment payments to the departing owner’s family, which turns a clean break into years of writing checks to people no longer in the business. Or they can fund it with life insurance, which delivers the exact amount the agreement requires, tax-advantaged in most cases, on the day it is needed — without a loan, a fire sale, or a decade of installments.
Which type of coverage fits depends on the trigger. If the only obligation you are funding is a death that would end a temporary need — say, a buyout that is only relevant for a fixed number of years — term insurance is the low-cost match. But most buy-sell obligations do not have an expiration date. Owners do not retire on a schedule, and death and disability can come at any age, so the need is open-ended. That is the structural reason cash value life insurance keeps entering the conversation for owners: it does not lapse before the obligation does, and the cash value it builds can fund a lifetime buyout at retirement or disability, not only a buyout at death. The right answer is usually a deliberate mix, sized to the specific triggers and the current value.
One funding trap worth naming. In a cross-purchase, the owners are supposed to own and pay for the policies personally — not run them through the corporate checkbook. It is tempting to have the business pay the premiums because that is where the money is, but doing so muddies who actually owns the coverage and can create tax problems and disputes later. If you want the company to be the one paying and owning the insurance, that is an entity-redemption structure, and it should be set up that way on purpose. Matching the ownership of the policies to the structure of the agreement is exactly the kind of detail that separates a plan that works from one that unravels under scrutiny.
This is the specific problem we spend our days on: making sure the obligation and the funding actually match. The legal drafting of the agreement belongs with your attorney, and the tax and accounting treatment with your CPA. Our lane is the liquidity — sizing and structuring the coverage so the cash is there, in the right amount, at the right moment, and matched to the structure you have chosen. We walk the full numbers, including a worked buy-sell example and the liquidity gap it can leave, in cash value life insurance for business owners.
The Honest Limitations
A buy-sell agreement is one of the most valuable documents a co-owned business can have, but it is worth being straight about what it does and does not do. It settles who buys an owner’s share, and on what terms — it is not a substitute for a well-drafted operating agreement, and it does not plan the actual succession of running the company. Those are separate, important pieces of work.
Funding it is not automatically a job for permanent insurance, either. A genuinely temporary, dated obligation can be matched with term at lower cost, and paying for permanent coverage where term would do is a mistake. The case for cash value coverage rests on the obligation being open-ended, which most buy-sell obligations are. And the structure carries real tax consequences — the difference between a cross-purchase and an entity redemption is not just administrative — which is exactly why the agreement should be drafted with your attorney and reviewed with your CPA. A life insurance guarantee, finally, is only as strong as the carrier behind it, which is why carrier financial strength matters. None of this is a reason to skip the agreement. It is a reason to build it deliberately, with the right people in the room.