What Is a Large Estate for Tax Purposes?

For federal purposes, a large estate in 2026 is one worth more than $15 million per person, because that is the point at which the federal estate tax begins to apply. Married couples can shelter up to $30 million combined through portability. States draw the line much lower: a dozen states and the District of Columbia impose their own estate taxes, some starting at just $1 million, so an estate that is nowhere near large by federal standards can still be large enough to owe tax where the deceased lived or owned property.¹²

The Federal Threshold in 2026

The basic exclusion amount for 2026 is $15 million per individual. That is the amount a person can pass to heirs free of federal estate tax. The figure comes from legislation signed on July 4, 2025 that amended Section 2010(c)(3) of the Internal Revenue Code, and it is indexed for inflation, so it should keep rising in later years.¹

Only the portion of the taxable estate above $15 million is actually taxed. An estate of $16 million exposes $1 million to the tax; the first $15 million passes untouched by the federal government. So “large” in the federal sense is not a fixed dollar figure so much as anything crossing that line by any amount.

Married Couples and Portability

A surviving spouse can claim whatever portion of the deceased spouse’s $15 million exemption went unused. If the first spouse to die uses only $5 million of exemption, the survivor adds the remaining $10 million to their own $15 million, sheltering up to $25 million at their own death. Used fully, portability lets a couple shield $30 million.

Portability is not automatic. The executor of the first spouse’s estate has to file a federal estate tax return, Form 706, to lock it in, even if no tax is owed. Skip that filing and the unused exemption is gone permanently. Families whose estates fall below the exemption sometimes assume no return is needed and give up millions in future shelter for the surviving spouse.

What Actually Counts Toward the Estate

Sizing an estate against the $15 million line means knowing what goes into the total. The gross estate includes the fair market value of everything the deceased owned or had certain interests in at the date of death, and the net cast by the IRS is wider than most people expect.³

Real estate, including primary homes, vacation properties, rentals, and vacant land, valued at current market prices rather than what was originally paid.
Bank accounts, brokerage accounts, stocks, bonds, and mutual funds.
Retirement accounts such as IRAs, 401(k)s, and pensions, based on the portion attributable to the deceased’s contributions and employer contributions on their behalf.⁴
Life insurance proceeds, if the deceased owned the policy or held control such as the ability to change beneficiaries, borrow against it, or cancel it. Even a policy payable to someone other than the estate gets pulled in if the deceased retained those powers.⁵
Business interests in partnerships, LLCs, closely held corporations, and sole proprietorships.
Tangible personal property, including jewelry, artwork, collectibles, and vehicles.

Life insurance is the item people miss most often. A $2 million policy can push an estate that looked comfortably under the line into taxable territory.

Jointly Owned and Previously Transferred Property

Property held jointly between spouses is included at 50 percent of its value in the first spouse’s gross estate regardless of who paid for it.⁶ For joint ownership with anyone other than a spouse, the full value is included in the deceased’s estate unless the surviving co-owner can prove they contributed their own money toward the purchase.

Property the deceased gave away during life but kept benefiting from also comes back into the estate. If someone transferred a home into a trust but kept living there rent-free, or moved investments into a trust but kept collecting the income, the full value snaps back at death.⁷ The same rule catches transfers where the deceased kept the power to decide who receives the property or its income. Many DIY estate plans fail here: the transfer looks complete on paper, but the tax code treats the property as if it never left.

Trusts

Whether a trust keeps assets out of the taxable estate depends on the type. A revocable living trust, the kind most people set up to avoid probate, gives no estate tax benefit. Everything in it is included because the creator kept the power to change or cancel it. An irrevocable trust generally removes assets from the taxable estate because the creator gave up all control. Certain trusts with a fixed term, such as some annuity trusts or residence trusts, pull the assets back in if the creator dies before the term ends.

Deductions That Bring the Number Down

The gross estate is not the number compared to $15 million. Allowable deductions come off first to produce the taxable estate.⁸

Outstanding debts reduce the estate’s value. Mortgages, car loans, credit card balances, and unpaid medical bills all qualify. So do funeral costs, court filing fees, appraisal fees, attorney fees, and executor compensation, provided they are allowable under the law of the state where the estate is being settled.⁹

Assets passing to a surviving spouse who is a U.S. citizen qualify for an unlimited marital deduction. A $50 million estate left entirely to a citizen spouse triggers no federal estate tax at the first death; the question just gets postponed until the survivor dies.¹⁰ Non-citizen surviving spouses do not get the unlimited deduction unless assets pass through a qualified domestic trust.

Bequests to qualifying charitable organizations are fully deductible with no cap.¹¹ Some estates use charitable bequests deliberately to bring the taxable figure below the exemption.

Lifetime Gifts Eat Into the Exemption

The estate exemption and the gift tax exemption draw from the same pool. Every dollar of taxable lifetime gifts reduces the exemption left at death. Give away $3 million in taxable gifts during life, and only $12 million of exemption remains for the estate.

Not every gift counts. Each year, a person can give up to $19,000 per recipient without touching the lifetime exemption or filing a gift tax return. Married couples can give $38,000 per recipient by splitting gifts. Direct payments to medical providers or educational institutions for someone else’s care or tuition are excluded entirely, with no ceiling. Only gifts above these exclusions chip away at the $15 million.

Gifts made when the exemption was lower are safe. The IRS has confirmed that gifts made under previously higher exemption amounts will not be clawed back or retroactively taxed if the exemption later decreases. Taxable gifts made before 2026 at the earlier $13.99 million exemption level remain fully protected.

What a Taxable Estate Actually Owes

The federal estate tax uses a graduated schedule that starts at 18 percent and reaches 40 percent on amounts over $1 million.¹² Because the credit tied to the $15 million exemption absorbs the lower brackets, estates that owe anything at all tend to pay at the top rates. Most taxable estates face an effective rate between 35 and 40 percent on the amount above the exemption.

The mechanics: the IRS computes a tentative tax on the full taxable estate using the rate schedule, then subtracts a credit equal to the tax on the exemption amount. What’s left is the bill. The credit is called the “unified credit” because it covers both lifetime gifts and transfers at death under one system.

State Thresholds Can Make a Small Estate Large

Twelve states and the District of Columbia impose their own estate taxes. Five states levy inheritance taxes. Maryland imposes both.² State exemption thresholds run far below the federal line, with the lowest state estate tax exemption at $1 million. An estate worth $2 million can owe state estate tax while sitting well under the federal exemption.

The two taxes work differently for heirs. An estate tax is paid by the estate itself, based on the total value of what the deceased left. An inheritance tax is paid by each heir individually, and the rate often depends on their relationship to the deceased: spouses and children frequently pay lower rates or are exempt, while more distant relatives and unrelated beneficiaries face higher rates. If the deceased owned real property in a state other than their home state, both states may have a claim.

So the honest answer to what makes an estate “large” is two answers. Federally, the line is $15 million per person in 2026, or up to $30 million for a married couple who preserve portability. Locally, the line can be as low as $1 million, and it is worth checking the rules of any state where the deceased lived or owned property before assuming an estate is too small to worry about.

1
Internal Revenue Service. What’s New — Estate and Gift Tax
2
Tax Foundation. Estate and Inheritance Taxes by State, 2025
3
Office of the Law Revision Counsel. 26 US Code 2031 – Definition of Gross Estate
4
Office of the Law Revision Counsel. 26 USC 2039 – Annuities
5
Office of the Law Revision Counsel. 26 USC 2042 – Proceeds of Life Insurance
6
GovInfo. 26 USC 2040 – Joint Interests
7
Office of the Law Revision Counsel. 26 USC 2036 – Transfers With Retained Life Estate
8
Internal Revenue Service. Estate Tax
9
eCFR. 26 CFR 20.2053-1 – Deductions for Expenses, Indebtedness, and Taxes; in General
10
Office of the Law Revision Counsel. 26 US Code 2056 – Bequests, Etc., to Surviving Spouse
11
eCFR. 26 CFR 20.2055-1 – Deduction for Transfers for Public, Charitable, and Religious Uses
12
Office of the Law Revision Counsel. 26 USC 2001 – Imposition and Rate of Tax