Estate Planning for Business Owners: Buy-Sell Agreements, Valuation, and Transfer Strategies

For most small business owners, the company represents 50-80% of their total net worth. Without a plan, the owner’s death creates three simultaneous crises: an estate tax bill that may be due within 9 months, a business that loses its key operator, and heirs who may not be able (or willing) to run the company. The federal estate tax rate is 40% on amounts above the exemption ($13.99 million per person in 2025, $27.98 million for married couples). A business valued at $10 million owned by a single owner whose other assets push the estate past the exemption could face an estate tax bill of $2-4 million, due in cash within 9 months of death (with possible extensions under IRC 6166 for qualifying closely held businesses). The estate tax exemption is scheduled to sunset to approximately $7 million per person after 2025 under current law, though the OBBBA extended the higher exemption through 2025. Planning tools include buy-sell agreements, life insurance, grantor retained annuity trusts (GRATs), intentionally defective grantor trusts (IDGTs), family limited partnerships (FLPs), and installment sales to trusts.

How does estate planning protect a business owner’s wealth?

How do valuation discounts work for family business transfers?

When transferring a minority interest in a closely held business to family members, the fair market value can be reduced by a lack-of-control discount (typically 15-40%) and a lack-of-marketability discount (typically 15-35%). These discounts reflect that a minority, non-publicly-traded interest is worth less than its proportional share of the total business value because the buyer can’t control operations or easily sell the interest. The combined effect can reduce the taxable value of a transfer by 25-50%, significantly lowering gift and estate tax exposure. The IRS frequently challenges aggressive discount claims, so a qualified business appraiser’s report is essential to defend the valuation. Proposed regulations have periodically targeted family entity discounts, but as of current law, they remain available when properly documented.

Should I use a revocable or irrevocable trust for estate planning?

A revocable living trust avoids probate and provides management continuity if you become incapacitated, but offers no tax benefits because the assets are still in your taxable estate. An irrevocable trust removes assets from your estate, potentially reducing estate tax, and can protect assets from creditors. The trade-off is control: you cannot easily modify or revoke an irrevocable trust. For most small business owners below the estate tax exemption ($13.61 million in 2024), a revocable trust paired with proper beneficiary designations is sufficient. Business owners above the exemption (or expecting to exceed it before the 2026 sunset) should consider irrevocable structures like GRATs, SLATs, or intentionally defective grantor trusts.

How does the lifetime gift and estate tax exemption work for business owners?

The combined lifetime gift and estate tax exemption for 2025 is $13.99 million per individual ($27.98 million for married couples), meaning you can transfer this amount during life or at death without owing federal gift or estate tax. Gifts to individuals up to the annual exclusion ($19,000 per recipient for 2025) don’t count against your lifetime exemption and don’t require a gift tax return. The current elevated exemption is set to sunset after 2025 under the Tax Cuts and Jobs Act, potentially dropping to approximately $7 million (indexed for inflation), which creates urgency for business owners to lock in transfers at today’s higher levels. Transferring discounted interests in a family business entity (LLC or FLP) can leverage the exemption because valuation discounts for lack of marketability and lack of control can reduce the taxable value of the transferred interest by 25-40%.

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.