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What Is a Buy-Sell Agreement in Life Insurance?
A buy-sell agreement is a legally binding contract between co-owners of a closely held business, such as a partnership, LLC, or S-corporation, that establishes exactly what happens to an owner's interest if they die, become disabled, retire, or exit the business for any reason. Without one, surviving partners may be forced to co-own the company with a deceased partner's heirs, creditors, or even a divorcing spouse. These scenarios can destroy a business overnight.
Life insurance is the most popular funding vehicle for buy-sell agreements because it delivers a large, immediate, and generally income tax-free lump sum precisely when it's needed most: at the moment of an owner's death. Rather than scrambling to liquidate assets, take out emergency loans, or drain operating capital, surviving partners or the business entity can use life insurance proceeds to buy out the departing owner's share at a pre-agreed price. For a broader overview, see our guide to life insurance for business owners.
Who Needs a Buy-Sell Agreement?
Buy-sell agreements are essential for nearly any multi-owner business structure:
| Business Type | Why It Matters |
|---|---|
| General Partnerships | A partner's death can legally dissolve the entire partnership |
| LLCs (Multi-Member) | Operating agreements may not address ownership transfer at death |
| S-Corporations | Ineligible shareholders (e.g., non-US citizens, trusts) could accidentally terminate S-corp status |
| C-Corporations | Prevents stock from ending up with unwanted third parties |
| Professional Practices | Medical, legal, and accounting firms require licensed owners |
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The Two Main Types: Cross-Purchase vs. Entity Purchase
Understanding the structural difference between these two agreement types is critical. It affects how many policies you need, who pays the premiums, and most importantly, your tax outcome.
Cross-Purchase Buy-Sell Agreement
In a cross-purchase agreement, each business owner buys and owns a life insurance policy on every other owner. When one owner dies, the surviving owners receive the death benefit personally and use those proceeds to purchase the deceased owner's share directly from their estate.
Example: Three partners each own one-third of a business valued at $3 million. Each partner's interest is worth $1 million. In a cross-purchase structure, each partner would own two policies (one on each of the other two partners) for $1 million each, totaling six policies.
Entity Purchase (Stock Redemption) Buy-Sell Agreement
In an entity purchase agreement, the business itself owns life insurance policies on each owner and is named the beneficiary. When an owner dies, the company collects the death benefit and uses it to redeem (buy back) that owner's shares. The remaining owners' percentage of ownership increases proportionally, without them personally purchasing anything.
This structure requires fewer policies (one per owner instead of one per every owner-pair), making it administratively simpler, especially for businesses with four or more owners. However, it comes with important tax drawbacks that have become more significant after the Connelly Supreme Court ruling (discussed below).
Alternatives Emerging After Connelly
In 2026, planners are increasingly recommending alternatives to traditional entity purchase that preserve the simplicity of fewer policies while avoiding the Connelly valuation trap:
- Cross-endorsement buy-sell: Each owner buys a policy on their own life and endorses a portion of the death benefit to the other owners under a split-dollar arrangement. Only one policy per owner is needed.
- Insurance-only LLC (insurance partnership): A separate LLC is formed solely to own the policies as a sister company (not a subsidiary), taxed as a partnership, with proceeds allocated to surviving owners after death.
- ILIT-owned policies: An irrevocable life insurance trust holds the policies, keeping proceeds out of both the operating company's value and the insured's estate.
- Hybrid or "wait-and-see" agreements: Decide at the triggering event whether the entity or surviving owners will buy.
Tax Implications of Buy-Sell Life Insurance
Tax treatment is one of the most critical, and most misunderstood, aspects of buy-sell planning. Here's what you need to know in 2026:
Income Tax
Death benefits paid to individuals or businesses are generally excluded from taxable income under federal law. However, the transfer-for-value rule (IRC §101(a)(2)) can make proceeds fully or partially taxable if a policy is transferred to another person for valuable consideration. To stay safe, always purchase new policies rather than transferring existing ones between owners.
Estate Tax
- Federal estate tax exemption in 2026: $15 million per individual ($30 million per married couple) under the One Big Beautiful Bill Act, made permanent with annual inflation adjustments starting in 2027. The 40% rate still applies above the exemption.
- In cross-purchase agreements, proceeds go directly to surviving owners, not the business, so they don't inflate the company's estate value.
- In entity-purchase agreements, Connelly confirmed that proceeds increase the company's fair market value, raising the decedent's taxable estate.
- State-level estate taxes (in roughly a dozen states) often have much lower exemptions and still apply independently of the federal rules. Learn more about life insurance estate tax rules that affect buy-sell planning.
Capital Gains Tax
This is where cross-purchase agreements offer a major advantage. When surviving owners buy the deceased partner's shares, they receive a step-up in cost basis to the fair market value at the time of purchase. This significantly reduces capital gains taxes if they later sell the business. Entity-purchase agreements provide no such step-up to surviving owners.
Understanding how policy ownership affects your tax exposure is critical when structuring any buy-sell funding.
| Tax Type | Cross-Purchase | Entity Purchase |
|---|---|---|
| Income Tax on Proceeds | Generally tax-free | Generally tax-free |
| Estate Tax (Connelly risk) | ✅ No inflated value | ⚠️ Proceeds inflate company value |
| Capital Gains (Basis Step-Up) | ✅ Yes, step-up to FMV | ❌ No step-up for survivors |
| Premium Deductibility | ❌ Not deductible | ❌ Not deductible |
How to Structure a Buy-Sell Agreement & What It Costs
Step-by-Step: How to Set One Up
- Get a business valuation to establish a fair market value for the business and each owner's share. This should be revisited annually.
- Choose your agreement type (cross-purchase, entity purchase, cross-endorsement, insurance-LLC, or a hybrid "wait-and-see" approach).
- Work with an attorney. A qualified business or estate attorney drafts the legal agreement and ensures IRC §2703 compliance with a clear pricing formula.
- Determine life insurance coverage amounts. Each policy should match the value of the insured owner's share.
- Apply for life insurance policies. Underwriting will require health exams, business financials, and ownership documentation.
- Fund and execute the agreement. Policies go in force; the legal agreement is signed.
- Review annually. Business value changes, ownership may shift, and life circumstances evolve.
What Does It Cost in 2026?
Costs include both attorney fees for drafting the agreement and life insurance premiums to fund it. Current 2026 average monthly premiums for a 20-year, $1 million term policy on a healthy, nonsmoker male in average health:
| Cost Component | Typical Range (2026) |
|---|---|
| Attorney Fees (drafting) | $1,000 to $3,000+ (flat fee common) |
| $1M / 20-Year Term (Age 30, male) | ~$67/month |
| $1M / 20-Year Term (Age 40, male) | ~$109/month |
| $1M / 20-Year Term (Age 50, male) | ~$262/month |
| $1M / 20-Year Term (Age 60, male) | ~$771/month |
| Cross-Purchase (3 owners age 40, $1M each) | ~$7,848/year total (6 policies) |
| Entity Purchase (3 owners age 40, $1M each) | ~$3,924/year total (3 policies) |
Female rates are typically 20% to 30% lower. Preferred health-class applicants can pay 25% to 35% less than the averages above. Actual rates vary by insurer, health class, and state.
Term life insurance is the most commonly used policy type for buy-sell funding because it's affordable and matches the active ownership period. Permanent life (whole or universal) is used when lifetime coverage is desired or when cash value accumulation is part of the plan and may also fund lifetime buyouts at retirement.
Protecting your business also means protecting your key people. Learn how key man life insurance works alongside buy-sell planning, and how life insurance for entrepreneurs handles co-founder agreements.
Life Insurance vs. Other Funding Methods
Other funding methods, such as installment payments from the estate, business cash reserves, seller financing, or bank loans, are unreliable because they depend on the company's financial health at exactly the moment it's most stressed. Life insurance is the only vehicle that guarantees the money will be there. Many advisors recommend keeping one or more of these backup funding methods named in the agreement in case insurance proceeds fall short of the agreed buyout price.
Common Mistakes to Avoid
Even well-intentioned buy-sell agreements can fail if they're poorly structured or neglected over time. Here are the most critical mistakes business owners make:
1. Not Updating the Agreement Regularly Business values grow. Ownership percentages change. New partners join. If your buy-sell agreement still reflects a $1 million valuation when the business is now worth $5 million, the surviving partners are getting a windfall while the deceased owner's estate is left shortchanged. Review your agreement and your coverage amounts every year, and revisit the entire plan with advisors at least every five years.
2. Mismatched Insurance Ownership In a cross-purchase agreement, the policies must be owned by the individual partners, not the business. If the company owns the policies in what is supposed to be a cross-purchase structure, you've inadvertently created an entity-purchase situation with all its tax disadvantages, including the Connelly valuation problem.
3. Ignoring Non-Death Triggers Death is not the only reason a partner might exit. Disability, divorce, bankruptcy, and voluntary retirement all require buy-sell provisions. Life insurance only covers death, so you'll need disability buyout insurance and clear contractual provisions for other triggering events.
4. Overlooking the Transfer-for-Value Rule If business partners decide to swap policies or transfer an existing policy to another owner, those proceeds may become taxable. Always work with a qualified advisor before transferring any life insurance policy. Review how policy ownership transfers affect taxes before making changes.
5. Skipping Professional Advice A buy-sell agreement is one of the most legally and financially complex documents a business owner will ever sign. Using a generic online template without input from an attorney and a financial advisor is one of the costliest mistakes a business can make. The agreement must comply with IRS requirements under IRC §2703 to be binding on the IRS for valuation purposes, and post-Connelly drafting requires extra precision around insurance ownership and valuation formulas.
Frequently Asked Questions
What is a buy-sell agreement in life insurance?
A buy-sell agreement is a legal contract between co-owners of a business that dictates how ownership transfers if one partner dies, retires, or exits for any reason. Life insurance is used to fund the agreement by providing a tax-free cash payout (the death benefit) that surviving owners or the business use to purchase the departing owner's interest. It ensures the business continues without disruption and that the deceased owner's estate receives fair compensation. Without funding, a buy-sell agreement is essentially an unfunded promise.
How did the 2024 Connelly Supreme Court ruling change buy-sell planning?
Connelly v. United States, decided unanimously in June 2024, held that life insurance proceeds received by a corporation to redeem a deceased shareholder's stock must be included in the company's fair market value for estate tax purposes, and the redemption obligation does not offset that increase. This effectively raises the taxable estate of any owner using an entity-purchase structure and can leave the agreement underfunded. Even with the permanent $15 million federal exemption under the One Big Beautiful Bill Act, the valuation rule still applies. Many businesses are now converting to cross-purchase, cross-endorsement, or insurance-LLC structures.
Are buy-sell agreement life insurance premiums tax-deductible?
No, premiums paid for life insurance used to fund a buy-sell agreement are not tax-deductible, regardless of whether they are paid by individual owners or the business. This applies to both cross-purchase and entity purchase structures. The trade-off is that the death benefit is almost always received income-tax-free, making life insurance a highly efficient funding vehicle despite the lack of a premium deduction. See our guide on deducting life insurance premiums for more details.
How much life insurance do I need for a buy-sell agreement?
The coverage amount for each policy should equal the insured owner's share of the business's fair market value. For example, if a business is worth $3 million and two partners each own 50%, each partner's life should be insured for $1.5 million. It's essential to reappraise the business regularly and adjust coverage accordingly. A professional business valuation done annually is the best way to keep coverage amounts accurate.
What happens if a buy-sell agreement isn't funded with life insurance?
Without life insurance funding, surviving owners must come up with the buyout money from personal savings, business cash reserves, or bank loans, all of which may be unavailable or insufficient at the time of a partner's death. This can force a fire sale of business assets, lead to disputes with the deceased owner's heirs, or result in the business being dissolved entirely. Unfunded or underfunded buy-sell agreements are one of the most common causes of closely held business failures following the death of an owner. Life insurance eliminates this uncertainty by guaranteeing the funds will be there when needed.