What Is a Buy-Sell Agreement? A Broker’s Guide

A buy-sell agreement is a legally binding contract among the owners of a business that spells out what happens to an owner’s share if they die, become disabled, retire, or otherwise leave. It controls three things: who is allowed to buy the departing owner’s interest, what events trigger a sale, and the price. Think of it as a pre-nup for business partners — written while everyone is healthy and getting along, so nobody has to negotiate it during a funeral or a divorce.

You don’t draft buy-sell agreements; that’s the attorney’s job. But the part that decides whether the agreement actually works is the part you sell: the funding. Most buy-sell agreements are funded with life insurance, and a 2024 Supreme Court ruling just changed how one of the most common structures should be built. If you write coverage for business owners, this is a conversation you want to be in front of.

Buy-Sell Agreement Meaning in Plain English

A closely held business has a problem that public companies don’t: there’s no market for the shares. If one of three partners dies, their stake doesn’t trade on an exchange — it passes to their estate. Suddenly the surviving partners are in business with a grieving spouse who wants to be cashed out, or worse, wants a seat at the table. A buy-sell agreement solves this by creating a private market: a pre-agreed buyer, a pre-agreed trigger, and a pre-agreed price.

Quick definition: A buy-sell agreement is a contract among co-owners of a closely held business that obligates a sale and purchase of a departing owner’s interest when a defined event occurs, at a price set by a formula or appraisal method the parties agree to in advance.

The agreement can stand alone or live inside the operating agreement or shareholders’ agreement. Cornell’s Legal Information Institute describes these as restrictions placed on the ownership rights of closely held companies, requiring shares to be resold to the company or the remaining owners when an owner leaves or dies. That restriction is the whole point: it keeps the business inside the circle of people who built it.

The Four Triggering Events

Almost every buy-sell agreement is built around some combination of four triggers. The order here roughly tracks how common they are:

1. Death. The classic trigger, and the easiest to fund, because life insurance pays a known sum at exactly the moment the money is needed.
2. Disability. An owner who can no longer work but isn’t going anywhere. Death insurance does nothing here — this needs a separate disability buyout policy, which is a distinct product most people forget about.
3. Retirement. A planned exit. Usually funded over time through an installment buyout rather than insurance, though cash-value life policies sometimes play a role.
4. Departure or divorce. An owner who quits, gets pushed out, or whose shares get pulled into a divorce settlement. The agreement’s transfer restrictions are what keep an ex-spouse from becoming an accidental co-owner.

The detail brokers should sit with: each trigger needs a different funding source. A plan that’s fully funded for death can be completely unfunded for a disability buyout. That gap is one of the most useful things you can flag for a business-owner client.

Cross-Purchase vs. Entity-Redemption: The Structural Fork

Before any funding conversation happens, the agreement has to pick a structure. There are two main ones, and the choice drives everything downstream — how many policies get written, who owns them, and, as you’ll see below, how the deal gets taxed.

The short version: cross-purchase is cleaner for tax but clumsy when there are more than two or three owners. Entity-redemption is simpler to administer but, post-2024, carries a tax surprise that owners and their advisors are still catching up on.

How Buy-Sell Agreements Actually Get Funded

An agreement that obligates a purchase without funding the purchase is a promise to write a check that may bounce. If three partners agree the company will buy out a deceased owner’s third for $2 million, that $2 million has to come from somewhere. There are really only four options, and only one of them produces the cash at the exact moment it’s needed.

• Life insurance. Pays a lump sum at death, which is precisely when a death-triggered buyout needs liquidity. This is why the overwhelming majority of death-funded agreements are insured.
• Cash reserves. Requires the business to sit on a large pile of cash for years — capital that could be working elsewhere.
• Borrowing. Assumes a lender will extend credit to a company that just lost a key owner. Often the worst possible moment to borrow.
• Installment payments. Spreads the cost over years, but leaves the departing owner’s family as creditors of the business and exposes them to its future performance.

Here’s a concrete example. Three equal partners own a business worth $6 million — $2 million each. They sign an entity-redemption agreement and the company buys a $2 million life insurance policy on each owner. One partner dies. The company collects $2 million tax-free, uses it to redeem the deceased partner’s shares from the estate, and the two surviving partners now own the business 50/50. The family gets clean cash; the business stays in the right hands. That’s the version everyone pictures.

The piece that gets dropped: disability. If that same partner had become permanently disabled instead of dying, the life policy pays nothing — disability isn’t death. Funding a disability buyout requires a disability buyout policy, a separate product with its own elimination period and benefit structure. A buy-sell agreement that lists disability as a trigger but has no disability buyout coverage behind it is unfunded for one of its own triggers. That’s a clean opening for a broker who notices it.

The Connelly Decision: Why Entity-Redemption Plans Need a Second Look

On June 6, 2024, the U.S. Supreme Court decided Connelly v. United States, and it reshaped how insurance-funded entity-redemption agreements get valued for estate tax. Every broker who funds buy-sells with company-owned life insurance should understand the gist.

The facts were simple. Two brothers, Michael and Thomas Connelly, owned a building-supply company. Their agreement said that if one died, the company would redeem his shares, and the company held roughly $3.5 million in life insurance on each brother to fund it. Michael died, the company collected about $3 million, and used it to buy back his shares. The estate argued the company’s value shouldn’t include that insurance money, because the cash was earmarked to pay out the shares — the obligation to redeem offset the asset.

The Court unanimously disagreed. It held that the life insurance proceeds the company received were a corporate asset that increased the company’s value, and the company’s obligation to redeem the shares did not offset that value. In plain terms: the insurance payout inflated the value of the company, which inflated the value of the deceased owner’s shares, which inflated the estate tax bill. The result was a larger taxable estate than the family had planned for.

What changed: Before Connelly, many entity-redemption plans assumed company-owned insurance proceeds wouldn’t raise the company’s value because they were offset by the buyout obligation. After Connelly, that assumption is dead — the proceeds count.

Now layer in the current estate tax landscape. The federal estate tax exemption is $15 million per individual for 2026 — $30 million for a married couple — made permanent by the One Big Beautiful Bill Act, which scrapped the steep sunset that had been scheduled. So fewer estates will owe federal tax than people feared a couple of years ago. But Connelly still bites in two places: businesses valuable enough to push an owner’s estate past the federal exemption, and the dozen-plus states with their own estate or inheritance taxes that kick in at much lower thresholds. For a successful closely held business, a multi-million-dollar life insurance payout landing on the company’s balance sheet can be the thing that tips an estate over the line.

This doesn’t mean entity-redemption is dead. It means the structure deserves a second look. Common responses advisors are using include shifting to a cross-purchase arrangement, or holding the policies in a separate entity — often a purpose-built insurance LLC — so the proceeds never land inside the operating company’s value. Those are legal and tax design decisions, not insurance decisions, so the attorney and CPA drive them. But the broker is frequently the one who first realizes the existing policies are owned the “wrong” way for the post-Connelly world.

What This Means for You as the Broker

You’re not the one drafting the agreement or rendering the tax opinion. Your value is being the person in the room who connects the contract to the money behind it. Here’s the conversation worth having with a business-owner client:

1. Is there a buy-sell agreement at all? Many closely held businesses don’t have one. That’s the first gap.
2. Which triggers does it list, and is each one funded? Death is usually covered. Disability is usually the orphan. Ask specifically.
3. Is it cross-purchase or entity-redemption? If it’s entity-redemption funded with company-owned life insurance, flag Connelly and suggest a review with their attorney and CPA.
4. Who owns the policies, and does the death benefit still match the buyout price? Businesses appreciate; a policy sized to a five-year-old valuation may be badly underfunded today.
5. When was it last reviewed? An agreement signed at formation and never touched is a common failure point. Make the buy-sell review a standing item at renewal.

You won’t have the answer to every downstream tax question, and you shouldn’t pretend to. The win is being the broker who spots the problem and pulls the right people in — that’s what makes a business owner keep your number.

Frequently Asked Questions

What is the main purpose of a buy-sell agreement?

It creates a private, pre-agreed market for an owner’s share of a closely held business. When an owner dies, becomes disabled, retires, or leaves, the agreement controls who can buy the interest, what triggers the sale, and the price — so the business stays with the remaining owners instead of passing to heirs or outsiders.

Is a buy-sell agreement funded with life insurance?

Most death-triggered buy-sell agreements are. Life insurance is the only funding source that delivers a known lump sum at exactly the moment a death-triggered buyout needs cash. Disability triggers require a separate disability buyout policy, and retirement buyouts are often handled through installment payments instead.

What is the difference between a cross-purchase and an entity-redemption buy-sell agreement?

In a cross-purchase agreement, the surviving owners buy the departing owner’s shares individually, and each owner holds a life policy on the others. In an entity-redemption (or stock-redemption) agreement, the business itself buys the shares and owns the policies. Cross-purchase gives surviving owners a basis step-up and avoids the Connelly tax issue; entity-redemption is simpler to administer when there are many owners.

How did the Connelly Supreme Court decision change buy-sell agreements?

In Connelly v. United States (2024), the Supreme Court held that life insurance proceeds a company receives to redeem a deceased owner’s shares count as a corporate asset that raises the company’s value for estate tax, and the obligation to redeem does not offset it. This can increase the estate tax owed by the deceased owner’s estate and has led many advisors to revisit entity-redemption structures funded with company-owned life insurance.

Who should have a buy-sell agreement?

Any closely held business with more than one owner — partnerships, LLCs, S corporations, and C corporations alike. It’s especially important for family-owned and small businesses, where an owner’s death or departure could otherwise force surviving owners into business with heirs, an ex-spouse, or outsiders.

Talk to a GA That Sweats the Funding Details

A buy-sell agreement is only as good as the money standing behind it — and the right structure depends on the business, the owners, and a tax landscape that just shifted under everyone’s feet. When your business-owner clients need coverage that actually funds the obligation, you want a general agency that knows the difference between a policy that checks a box and a policy that does the job. That’s the kind of detail we sweat, and it’s why brokers bring their toughest cases to us.