What Is an Estate Tax?

Estate tax — sometimes called the “death tax” — is one of those topics that sounds abstract until it isn’t. Whether you’re a nonprofit professional helping donors plan their legacies, or an individual thinking about what you’ll leave behind, understanding how estate tax works in 2026 matters more than ever. This guide covers the essentials: what estate tax is, how it’s calculated, what just changed under new federal law, and how charitable bequests fit into the picture.

The Basics of Estate Tax

Definition and Purpose

An estate tax is a tax on the transfer of assets from a deceased person to their heirs or beneficiaries. It’s paid by the estate itself before distribution — not by the people receiving the inheritance (that’s a separate concept called an inheritance tax, which only a handful of states impose).

The stated purpose of estate tax is twofold: to generate government revenue and to prevent extreme concentrations of wealth from compounding across generations without any taxation. Whether you find that rationale compelling or not, the rules are the rules — and knowing them is the foundation of good legacy planning.

Who Pays Estate Tax?

The short answer: very few people. Federal estate tax only applies to estates exceeding the exemption threshold — which, as of 2026, is $15 million per individual. The vast majority of Americans will never owe a dollar in federal estate tax. That said, estates with significant real estate, business interests, or investment portfolios can cross the threshold faster than their owners expect. State-level estate taxes (where they exist) often kick in at much lower amounts.

Federal vs. State Estate Taxes

Federal estate tax applies uniformly across all 50 states. State estate taxes are a different matter entirely — some states have their own estate tax, some have an inheritance tax, some have both, and others have neither. As of 2026, approximately 12 states and the District of Columbia still impose a state-level estate tax, often with much lower exemption thresholds than the federal level. If your donors live in Massachusetts, Oregon, or Washington, for example, state estate tax is a real consideration even for moderately sized estates.

How Estate Tax Works

Calculating the Taxable Estate

The IRS starts with the gross estate — the fair market value of everything the deceased owned or controlled at the time of death. This includes:

• Real estate and personal property
• Cash, savings, and investment accounts
• Business interests and partnerships
• Life insurance proceeds (if the deceased owned the policy)
• Retirement accounts
• Certain trusts and transferred assets

From that gross value, certain deductions are allowed: funeral expenses, outstanding debts, administrative costs, and — critically — charitable bequests. Gifts to a surviving spouse also qualify for an unlimited marital deduction. What’s left after deductions is the taxable estate. If it exceeds the exemption, the excess is taxed at a flat 40%.

2026 Estate Tax Rates and Exemptions

Here’s where things got interesting. For years, estate planners had been sounding alarms about the “TCJA sunset” — the provision that would have cut the federal exemption roughly in half at the end of 2025, dropping from approximately $14 million per person back to around $7 million. That sunset has been eliminated.

The One Big Beautiful Bill Act, signed into law on July 4, 2025, permanently raised the federal estate, gift, and generation-skipping transfer tax exemption to $15 million per individual — or $30 million for married couples — effective January 1, 2026. Unlike the TCJA, this increase has no expiration date and will be indexed for inflation annually starting in 2027. The tax rate on amounts above the exemption remains 40%.

The annual gift tax exclusion — the amount you can give to any individual in a single year without it counting against your lifetime exemption — is $19,000 per recipient in 2026.

Filing Requirements and Deadlines

When an estate is subject to federal estate tax, the executor must file IRS Form 706 (United States Estate and Generation-Skipping Transfer Tax Return) within nine months of the date of death. A six-month extension is available upon request. Filing is required even for estates that won’t owe tax, in cases where portability (see below) needs to be preserved for a surviving spouse.

Exemptions, Portability, and the Gift Tax

The Federal Exemption

The $15 million exemption (2026) represents the amount a person can transfer — whether during life or at death — without incurring federal estate or gift tax. It’s a unified figure: lifetime taxable gifts reduce the amount available at death. If you give away $5 million during your lifetime, only $10 million of exemption remains to shelter your estate.

Portability for Married Couples

One of the most valuable provisions for married couples is portability. When a spouse dies without using their full exemption, the surviving spouse can elect to “port” the unused portion — effectively combining both exemptions. In 2026, that means a married couple can shelter up to $30 million from federal estate tax. Portability must be elected on a timely filed estate tax return, even if no tax is owed. This is a step many families miss — and it can be extraordinarily costly.

Annual Gift Exclusion

Annual gifts of up to $19,000 per recipient (2026) don’t count against the lifetime exemption at all. A couple can give $38,000 to a child, grandchild, or anyone else each year without any gift tax implications. Over time, systematic gifting is one of the most effective — and underused — tools for reducing a taxable estate.

Strategies to Minimize Estate Tax

Charitable Bequests: The Most Direct Path

Charitable bequests are fully deductible for estate tax purposes — dollar for dollar. A donor who leaves $500,000 to a nonprofit removes that entire amount from their taxable estate. For estates near or above the exemption threshold, this isn’t just philanthropy. It’s one of the most tax-efficient transfers a person can make.

The most common form is a simple bequest in a will: “I leave X% of my estate to [charity].” But donors can also structure gifts through charitable remainder trusts (CRTs), charitable lead trusts (CLTs), or beneficiary designations on IRAs and retirement accounts — which pass to charity free of both estate and income tax, making them particularly efficient vehicles for charitable giving.

If your organization isn’t actively cultivating bequest conversations, you’re leaving significant revenue — and significant relationships — on the table. Learn how planned giving programs work and what it takes to build one that actually generates gifts.

Trusts and Advanced Planning Structures

For larger estates, trust structures remain powerful tools even with a $15 million exemption. Common approaches include:

• Irrevocable Life Insurance Trusts (ILITs) — keep life insurance proceeds out of the taxable estate
• Grantor Retained Annuity Trusts (GRATs) — transfer asset appreciation to heirs at reduced gift tax cost
• Spousal Lifetime Access Trusts (SLATs) — use exemption now while a spouse retains indirect access
• Charitable Remainder Trusts (CRTs) — provide income to the donor, with the remainder passing to charity
• Qualified Personal Residence Trusts (QPRTs) — transfer a home out of the estate at a discounted gift tax value

Each structure has specific requirements, trade-offs, and ideal use cases. An estate planning attorney and a financial advisor who specializes in wealth transfer should be involved in any serious planning conversation.

Systematic Gifting

Annual exclusion gifting ($19,000 per recipient in 2026) is simple, requires no filing, and compounds meaningfully over time. A couple with three adult children and six grandchildren can remove $342,000 from their estate every single year with zero paperwork beyond the gift itself. Over a decade, that’s $3.42 million — tax-free to heirs, entirely outside the estate.

What Changed in 2026 — and Why It Matters

The passage of the One Big Beautiful Bill Act resolved years of uncertainty in estate planning. Under the Tax Cuts and Jobs Act of 2017, the elevated exemption amounts were always temporary — set to expire at the end of 2025. That impending deadline had pushed many high-net-worth families into rushed planning decisions, often making large irrevocable gifts before they were fully ready.

The OBBBA eliminated the sunset. The $15 million exemption is now permanent law, adjusted for inflation going forward. The “use it or lose it” urgency is gone. What replaces it is something more useful: time and clarity to make thoughtful, long-term decisions about wealth transfer, philanthropy, and legacy.

That said, tax law is always subject to future legislative changes. A different Congress and administration could revisit the estate tax framework at any time. Planning with flexibility — and not waiting for “someday” — remains sound strategy.

Common Misconceptions About Estate Tax

“Only the Ultra-Wealthy Pay Estate Tax”

Mostly true at the federal level — but state estate taxes can bite at much lower thresholds. Massachusetts, for example, taxes estates above $2 million. Oregon’s exemption is $1 million. A retiree with a paid-off home, retirement accounts, and a life insurance policy can exceed those limits without feeling “wealthy” in any meaningful sense.

“Estate Tax Is Double Taxation”

This is a common argument — and a legitimate one in some respects. Many estate assets were taxed as income when earned. However, appreciated assets often carry embedded gains that were never taxed during the owner’s lifetime. The estate tax debate is genuinely complex, and reasonable people disagree. What’s not debatable: the law is what it is, and planning within it is simply good stewardship.

“Estate Tax Forces Families to Sell Businesses and Farms”

There are special provisions — including Section 6166 installment payment plans and Section 2032A special use valuation rules — designed to protect family-owned businesses and farms from forced liquidation. These provisions don’t eliminate the problem for every family, but they provide meaningful relief in many situations.

Estate Tax and Planned Giving: The Connection Nonprofits Can’t Ignore

Here’s the practical reality for nonprofit organizations: estate tax is one of the most powerful motivators for planned giving conversations — and most development professionals don’t use it effectively.

When a donor understands that a charitable bequest reduces their taxable estate dollar for dollar, and that the alternative is paying 40 cents of every dollar above the exemption to the IRS, the conversation changes. Giving to a cause they love becomes not just emotionally satisfying but financially rational. That’s a rare combination in fundraising.

For donors with estates approaching or exceeding $15 million, the calculus is explicit. For donors with state-level estate tax exposure — say, a Massachusetts donor with a $3 million estate — the conversation is equally real, just less obvious.

Building a planned giving program that educates donors about these realities — and makes it easy to act — is one of the highest-return investments a nonprofit can make. See how LegacyPlanner™ helps donors take action.

Frequently Asked Questions About Estate Tax

What is the federal estate tax exemption in 2026?

The federal estate tax exemption is $15 million per individual in 2026, or $30 million for married couples using both exemptions. This amount will be adjusted for inflation annually starting in 2027. It was permanently set at this level by the One Big Beautiful Bill Act, signed on July 4, 2025.

What is the estate tax rate?

The federal estate tax rate is a flat 40% on the value of an estate above the exemption threshold. State estate tax rates vary by state.

How is an estate valued for tax purposes?

The IRS uses fair market value — the price a willing buyer and seller would agree to — for all assets in the estate at the date of death. This includes real estate, investments, business interests, personal property, and retirement accounts. Certain deductions (debts, expenses, charitable gifts, spousal transfers) reduce the gross estate to arrive at the taxable estate.

Can estate tax be avoided?

Not entirely, for large estates — but it can be significantly reduced through charitable giving, trust structures, lifetime gifting, and proper planning. For most Americans, the $15 million federal exemption means no federal estate tax at all. State-level taxes require separate planning.

Do all states have an estate tax?

No. As of 2026, approximately 12 states and the District of Columbia impose an estate tax, with exemptions that vary widely — some as low as $1 million. Six states also have an inheritance tax (paid by beneficiaries rather than the estate). A handful have both. Your state of residence matters.

Are charitable bequests deductible for estate tax purposes?

Yes — fully, with no limit. Every dollar left to a qualified charity reduces the taxable estate by a dollar. For estates above the exemption threshold, a charitable bequest is one of the most tax-efficient transfers possible. The gift also qualifies the estate for a charitable deduction on the estate tax return, further reducing the tax owed.

What’s the difference between estate tax and inheritance tax?

Estate tax is paid by the estate before assets are distributed. Inheritance tax is paid by the people who receive the assets. The federal government imposes an estate tax but no inheritance tax. Some states impose one or both.

Estate planning isn’t just about minimizing taxes — it’s about making intentional choices about what you leave behind and who benefits. Whether you’re a donor thinking about your legacy or a nonprofit helping supporters plan theirs, understanding the rules is the starting point. The next step is acting on them. Start with the basics of bequests — and consider what a well-structured gift could mean for the causes you care about most.