What Is the Estate Tax and Why Should Small Business Owners Care?
The estate tax is a federal tax on the transfer of property at death. It applies to the total value of a deceased person's assets — including business interests, real estate, investments, and personal property — before distribution to heirs. For small business owners, the estate tax represents a critical planning challenge because a successful business can easily push an estate above the exemption threshold, potentially forcing heirs to sell the business just to cover the tax bill.
As of 2026, the federal estate tax exemption is approximately $13.99 million per individual (adjusted annually for inflation). Estates valued above this threshold are taxed at a top rate of 40%. While this may sound like a problem only for the ultra-wealthy, a thriving small business — plus real estate, retirement accounts, and life insurance proceeds — can easily surpass this threshold. For business owners who have spent decades building their company, proactive tax planning is essential to preserve what they've built.
How the Estate Tax Applies to Business Assets
Valuation of Business Interests
The IRS values business interests at their fair market value — what a willing buyer would pay a willing seller, neither being under compulsion to act. For a small business, this typically means a valuation based on earnings multiples, discounted cash flow analysis, or comparable company transactions. Valuation discounts for lack of marketability and minority interests can reduce the taxable value significantly — often by 25% to 40% — making proper valuation one of the most powerful estate planning tools available.
Let's walk through a realistic example. Consider a small manufacturing company with $3 million in annual EBITDA. At a 4x multiple, the enterprise value is $12 million. Add a $2 million primary residence, $1.5 million in retirement accounts, and $500,000 in life insurance, and the gross estate reaches $16 million — already above the 2026 exemption. After debts and administration expenses, the taxable estate might still exceed the exemption by $1-2 million, triggering a potential tax liability of $400,000 to $800,000.
Closely Held Business Considerations
The IRS provides some relief through Section 6166, which allows estates where a closely held business exceeds 35% of the adjusted gross estate to pay estate taxes in installments over 14 years — with interest-only payments for the first five years and a special low interest rate (2%) on a portion of the deferred tax. However, this is a deferral mechanism, not a reduction, and the business must remain solvent and operational throughout the payment period.
Estate Planning Strategies for Small Business Owners
1. Lifetime Gifting
The annual gift tax exclusion allows individuals to give up to $18,000 per recipient (2026 figure) without using any of their lifetime estate tax exemption. A married couple can jointly gift $36,000 per recipient per year. Over 10 years, a couple gifting business interests to three children can transfer over $1 million out of their estate — completely tax-free. This also removes future appreciation from the estate, which compounds the benefit significantly if the business continues to grow.
Larger gifts can be made using the lifetime exemption, but careful consideration must be given to carryover basis rules — the recipient takes the donor's tax basis, meaning they may face significant capital gains tax if they later sell the asset.
2. Irrevocable Life Insurance Trusts (ILITs)
Life insurance proceeds are included in the insured's estate if they own the policy at death. An ILIT removes the policy from the estate by having the trust own it. The trust pays the premiums (funded through annual gifts), and at death the proceeds flow to the trust — outside the taxable estate — and can be used to provide liquidity to pay estate taxes without forcing a sale of the business. This is one of the most effective structures for business owners whose primary concern is keeping the company in the family.
3. Grantor Retained Annuity Trusts (GRATs)
A GRAT allows a business owner to transfer appreciating assets — like shares of a growing company — to heirs with minimal or zero gift tax cost. The owner contributes assets to an irrevocable trust and retains an annuity payment for a set term (typically 2-5 years). At the end of the term, any remaining value passes to beneficiaries. If the assets appreciate faster than the IRS-assumed interest rate (the Section 7520 rate), the excess passes tax-free. Many business owners use rolling short-term GRATs as a systematic wealth transfer strategy.
4. Buy-Sell Agreements
A properly structured buy-sell agreement can fix the value of the business for estate tax purposes and provide a market for the shares. The agreement specifies how shares will be valued and who can buy them upon the owner's death. When funded with life insurance — a "cross-purchase" agreement where co-owners buy policies on each other — the surviving owners receive tax-free proceeds to purchase the deceased's interest, while the estate receives cash instead of illiquid business shares. For related planning around business transitions, see our guide on net operating losses and how they may offset gains during a business sale.
State-Level Estate and Inheritance Taxes
While the federal exemption is high, many states impose their own estate or inheritance taxes with much lower thresholds. As of 2026, 12 states and the District of Columbia impose estate taxes, with exemptions as low as $1 million in some jurisdictions. Six states impose inheritance taxes on the recipient rather than the estate. Small business owners operating in states like Massachusetts ($2 million exemption) or Oregon ($1 million exemption) need to plan for the state-level tax even when the federal tax is not a concern.
Coordinating with Other Tax Strategies
Estate planning does not operate in isolation. Business owners should coordinate their estate plan with income tax strategies, retirement planning, and charitable giving. For example, donating appreciated business interests to a charitable remainder trust can generate an immediate income tax deduction while removing assets from the estate and providing an income stream to the donor during their lifetime. This strategy also allows the business to be sold inside the trust without triggering immediate capital gains tax. For business owners looking to maximize tax efficiency, see our guides on available tax credits and tax exemptions that may complement estate planning strategies.
Key Takeaways
- The 2026 federal estate tax exemption is approximately $13.99 million per individual; estates above this threshold are taxed at up to 40%.
- Fair market value of business interests determines the estate tax base — valuation discounts can significantly reduce exposure.
- Lifetime gifting, ILITs, GRATs, and buy-sell agreements are the four primary estate planning tools for business owners.
- State estate taxes may apply even when federal tax does not — know your state's threshold.
- Coordinate estate planning with income tax planning and retirement strategies for maximum efficiency.
- Start planning early — many strategies require time to implement and produce meaningful results.
