Buy-Sell Agreement Life Insurance: How Business Partners Protect Their Companies

What Is a Buy-Sell Agreement and Why Does Life Insurance Fund It?

A buy-sell agreement is a legally binding contract between business co-owners that dictates exactly what happens to an owner's share of the business if they die, become disabled, retire, or leave. Think of it as a prenuptial agreement for business partners. Without one, a deceased owner's heirs could end up with a stake in your company, creating conflict, financial strain, or even a forced liquidation.

Life insurance is the most common and cost-effective way to fund a buy-sell agreement. When a triggering event occurs (most often an owner's death), the life insurance policy pays out a death benefit that gives the surviving partners or the business the immediate cash needed to buy out the departing owner's interest, without tapping into business reserves or taking on debt.

Here's what makes a life insurance-funded buy-sell agreement so powerful for partnerships, LLCs, and S-corps:

• Guaranteed funding with buyout cash available the moment it's needed
• Income tax-free proceeds for surviving owners or the business
• Business continuity without disruption or forced asset sales
• Fair compensation to heirs at the full agreed-upon value

For broader context on protecting your company beyond buy-sell coverage, our guide to life insurance for business owners covers the complete strategy stack.

Cross-Purchase vs. Entity Purchase: The Two Main Structures

Choosing the right structure is one of the most important decisions when setting up a buy-sell agreement life insurance plan. There are two primary types, each with distinct ownership rules, tax consequences, and scalability considerations.

Cross-Purchase Buy-Sell Agreement

In a cross-purchase agreement, each business owner applies for and owns a life insurance policy on the other owner(s). If Owner A dies first, Owner B receives the policy's income tax-free death benefit on Owner A. Owner B uses the death benefit to buy Owner A's share of the business from the surviving family, and Owner A's family receives cash while Owner B retains the business.

Key advantage: Surviving purchasers generally get a step-up in basis equal to the purchase price of the acquired interest, which can reduce future capital gains taxes.

Key drawback: The number of required policies grows quickly. With 5 owners, you'd need 20 separate policies. This makes cross-purchase agreements best suited for businesses with 2 to 3 owners, although trusteed or LLC-based variations (covered below) solve the scaling problem.

Entity Purchase (Stock Redemption) Buy-Sell Agreement

In an entity purchase agreement, the business itself owns life insurance policies on each owner. When an owner dies, the company collects the death benefit and uses it to redeem or buy back the deceased's ownership interest from their estate.

Key advantage: Simpler administration with only one policy per owner needed, regardless of how many partners exist.

Key drawback: Surviving owners do not receive a stepped-up basis, which can result in higher capital gains taxes down the road. More importantly, following the 2024 Connelly v. United States Supreme Court ruling, the Court held 9-to-0 that company-owned life insurance increases the company's fair market value for estate tax purposes, and the company's obligation to redeem a deceased shareholder's shares does not necessarily decrease the company's value.

Which Structure Is Right for You?

Modern Alternatives: Trusteed Cross-Purchase and Insurance LLC

Two structures gained significant momentum after the Connelly ruling. A trusteed cross-purchase uses a third-party trustee or escrow agent to own and manage a separate life insurance policy on each owner, collect premiums from the owners, and use the death proceeds to help fund the purchase of the deceased owner's business interest. This solves the multiple-policy problem in ordinary cross-purchase plans by having the trust hold one policy per owner and centralizing administration.

An insurance LLC (sometimes called an insurance-only LLC) is a separate partnership-taxed entity that owns the policies on each owner. Each shareholder's existing policy can be transferred to the LLC, with each shareholder also serving as a member. There only needs to be one life insurance policy for each shareholder, and the LLC is taxed under partnership rules. This sidesteps the transfer-for-value rule while preserving cross-purchase tax benefits. For owners with substantial estates, an irrevocable life insurance trust can also be layered in to keep policy proceeds completely outside the taxable estate.

Tax Implications of Buy-Sell Agreement Life Insurance in 2026

Taxes are one of the most nuanced parts of a buy-sell agreement funded with life insurance. Here's what every business owner needs to understand in 2026.

Premiums Are Not Tax-Deductible

Whether it's a cross-purchase or entity purchase plan, life insurance premiums used to fund a buy-sell agreement are not tax-deductible. The IRS treats these as personal expenses, not business expenses. You're paying with after-tax dollars regardless of the structure.

Death Benefits Are Generally Income Tax-Free

The upside: death benefit proceeds received by individuals or the business are excluded from income tax under IRC Section 101(a). This is one of the key reasons life insurance is the preferred funding method for buy-sell agreements.

However, for employer-owned policies issued after August 16, 2006, you must satisfy the IRC Section 101(j) notice and consent requirements before the policy is issued, or the death benefit can become taxable. Also watch for the transfer-for-value rule: if a policy is sold or transferred for consideration, the death benefit can become partially taxable. Transfers between business partners or to the insured corporation generally qualify for exceptions, but consult a tax professional before any policy transfer. Learn more about life insurance policy ownership and how transfers can trigger unexpected tax consequences.

Estate Tax After the Connelly Ruling and the $15M Exemption

The 2024 Connelly v. United States Supreme Court decision unanimously held that life insurance proceeds received by a corporation to fund a redemption must be included in the company's fair market value for estate tax purposes, with no offset for the redemption obligation. In practical terms, that means a redemption plan can create a higher taxable value for the deceased owner's estate than many owners expected.

However, the One Big Beautiful Bill Act (OBBBA) permanently raised the federal estate and gift tax exemption. Effective January 1, 2026, the lifetime exemption applicable for federal estate, gift, and GST tax purposes is $15 million per individual, with a combined exemption of $30 million for married couples. Per the One Big Beautiful Bill Act, the new $15 million gift, estate, and generation-skipping exemption amount will continue to be indexed for inflation, with no sunset provisions. The 40% top federal estate tax rate still applies to amounts above the exemption.

For business owners whose total estate stays below those thresholds, the Connelly effect may not produce actual federal estate tax. For larger estates, Connelly remains a serious planning issue, especially since 13 jurisdictions levy their own estate tax in 2026 with exemptions as low as $1 million in Oregon. Other low-threshold states include Massachusetts at $2 million, Minnesota and Washington at $3 million, and Illinois at $4 million. Pairing your buy-sell plan with a solid estate liquidity strategy is more important than ever, and our guide to life insurance for estate planning walks through complementary techniques.

What Buy-Sell Life Insurance Costs in 2026

Buy-sell coverage is typically priced like standard individual term life insurance because the underwriting (age, health, smoking status, coverage amount) is identical. There is no separate "business" rate. Based on current 2026 market data, a $500,000 life insurance policy costs an average of $47 per month for women and $59 per month for men on a 20-year term at age 40. Actual quotes for healthy nonsmokers can run considerably lower, with some carriers offering $500,000 of 20-year term coverage for a 40-year-old in the $25 to $40 per month range. A $1 million policy roughly doubles that, putting most healthy 40-year-olds in the $50 to $120 per month range for 20-year term coverage. Smoker rates typically run 3 to 5 times higher than nonsmoker rates.

For a three-owner business worth $3 million with each owner's share valued at $1 million, total annual premiums under an entity plan might run $2,000 to $4,300 across all three policies (assuming healthy 40-year-olds). Permanent (whole or universal) policies cost significantly more but build cash value and don't expire, which matters if the buy-sell obligation will last into the owners' 80s or 90s.

How to Structure a Buy-Sell Agreement

1. Engage an attorney and financial advisor since buy-sell agreements require legal drafting and insurance expertise working together
2. Agree on a business valuation method (fixed price, formula, or independent appraisal) and review it annually to satisfy IRC Section 2703
3. Choose your agreement type including cross-purchase, entity, trusteed cross-purchase, or insurance LLC
4. Determine the coverage amount so each policy matches each owner's proportional business value
5. Select the right policy type with term being most affordable and permanent providing lifelong coverage
6. Establish proper ownership and beneficiary designations because mismatches are one of the costliest errors
7. Review and update regularly at minimum annually or after major business events

Common Mistakes That Derail Buy-Sell Agreements

The biggest pitfalls business owners fall into include:

• Letting the agreement go stale. A buy-sell agreement written when the business was worth $500K is dangerous when the business is now worth $5M.
• Misaligned insurance and agreement terms. The policy payout must match the buy-sell price. Gaps leave surviving partners scrambling for funds.
• Omitting key trigger events. Don't just plan for death. Include disability, divorce, voluntary departure, bankruptcy, and retirement.
• Improper ownership designations. In an entity plan, the company must be both owner and beneficiary. In a cross-purchase plan, each individual owner must own the policy on their partner. Avoid the Goodman Triangle tax trap where mismatched roles trigger gift taxes.
• Ignoring the Connelly ruling. Existing entity purchase agreements may now carry unintended estate tax exposure. Review yours with an attorney immediately.
• Using a generic template. A one-size-fits-all document won't account for your state's laws, your business structure, or your partners' situations.

Business owners should also consider complementary tools like split dollar life insurance as part of a broader executive benefit strategy, and review our guide on life insurance estate tax rules to understand incidents of ownership under IRC §2042. Founders of newer companies should also review our guide to life insurance for entrepreneurs.

Frequently Asked Questions

What is a buy-sell agreement in life insurance?

A buy-sell agreement in life insurance is a legally binding contract between business co-owners that uses life insurance policies to fund the purchase of a departing or deceased owner's business interest. When a triggering event like death occurs, the life insurance death benefit provides immediate cash to execute the buyout. This protects the business from disruption while ensuring the departing owner's family receives fair compensation. It's one of the most essential succession planning tools for partnerships, LLCs, and S-corps.

Is life insurance the best way to fund a buy-sell agreement?

Life insurance is widely considered the most efficient funding method because it provides guaranteed, income tax-free cash exactly when it's needed most, at the time of an owner's death. Alternative methods like installment payments, business loans, or sinking funds all carry risks because they rely on the business having sufficient cash flow or credit at the time of the triggering event. Life insurance eliminates that uncertainty with a guaranteed death benefit that's typically received free of income tax.

Are buy-sell agreement life insurance premiums tax-deductible?

No, premiums paid for life insurance policies used to fund a buy-sell agreement are not tax-deductible, whether paid by the business (entity purchase) or by individual owners (cross-purchase). The IRS treats these as non-deductible expenses since the policyholder is also the beneficiary. However, death benefit proceeds are generally received income tax-free, which is a significant financial advantage.

What did the Connelly Supreme Court ruling mean for buy-sell agreements?

The 2024 Connelly v. United States ruling established that in an entity purchase buy-sell agreement, life insurance proceeds received by the company upon an owner's death must be counted when determining the company's fair market value for estate tax purposes. This can significantly increase the deceased owner's taxable estate. Many advisors are now steering owners toward cross-purchase, trusteed cross-purchase, or insurance LLC structures to avoid this outcome, especially for estates that exceed the $15 million federal exemption or face state-level estate taxes.

Who needs a buy-sell agreement funded with life insurance?

Any business with two or more co-owners should have a buy-sell agreement in place, including general partnerships, limited partnerships, LLCs, S-corporations, and closely held C-corporations. If a co-owner died tomorrow with no buy-sell agreement, the business could face a legal dispute with the deceased's heirs, a forced sale, or serious financial instability. Life insurance-funded buy-sell agreements are particularly critical for businesses where the owners play an active role in day-to-day operations, as their loss would have an immediate operational and financial impact.