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Federal Estate Tax vs. State Estate Tax: What Ordinary Families Need to Know — The federal estate tax exclusion reaches $15 million for deaths in 2026, but several states impose their own estate taxes at much lower thresholds. Families should check both federal and state rules before assuming an inheritance faces no tax – Shutterstock

Federal estate tax and state estate tax sound like two versions of the same financial headache, but they follow different rules and can affect different families. In 2026, the federal estate tax basic exclusion amount reaches $15 million for someone who dies during the year, which puts the federal tax far outside the reach of most households.

That does not mean every family can forget about estate taxes forever. Some states impose their own estate taxes with much lower thresholds, while a handful impose inheritance taxes that focus on the person receiving the money or property. A family can therefore face no federal estate tax and still encounter a state tax issue, particularly when an estate includes valuable real estate, a business, investment accounts, or property in more than one state.

The Federal Estate Tax Has a Very Large Front Door

For someone who dies in 2026, the federal basic exclusion amount stands at $15 million. The IRS generally looks at the value of the decedent’s gross estate, along with certain adjusted taxable gifts, when determining whether the estate must file Form 706.

That figure does not mean an estate automatically owes federal tax once its value crosses the line, because deductions and other estate tax rules affect the final calculation. A surviving spouse can also benefit from the federal portability rules, which can allow an executor to transfer a deceased spouse’s unused exclusion to the surviving spouse through a timely estate tax return.

State Estate Taxes Play by Their Own Rulebook

Here comes the part that can make estate planning feel like a board game with several sets of instructions: states create their own estate tax systems. As of 2026, a dozen states plus the District of Columbia impose estate taxes, and their exemption amounts can sit well below the federal $15 million threshold.

For example, an estate could fall comfortably below the federal threshold while still exceeding the estate tax threshold in a state such as Massachusetts, Oregon, Minnesota, Illinois, or Washington. State rules also differ on rates, deductions, portability, property located elsewhere, and other details, so a family should not assume that the federal number answers the state question.

Estate Tax and Inheritance Tax Are Not Twins

An estate tax generally focuses on the estate itself before assets reach beneficiaries, while an inheritance tax generally focuses on the person who receives the property. That distinction matters because an heir could face an inheritance tax even when the estate itself does not owe a traditional estate tax.

Only a small group of states currently impose inheritance taxes, and the rules can vary according to the beneficiary’s relationship with the deceased person. Spouses and close family members often receive more favorable treatment than distant relatives or unrelated beneficiaries, but the exact exemptions and rates depend on state law.

The Family Home Can Change the Conversation

A common mistake involves looking only at bank and investment accounts while forgetting the house, land, business interests, life insurance, retirement accounts, and other property that may contribute to an estate’s value. Picture a family with a valuable home, retirement savings accumulated over decades, a small business, and several investment accounts: the estate can look very different once someone adds everything together. That does not automatically create a federal estate tax bill, but it can make state rules much more important.

Property in another state can add another wrinkle, especially when an estate includes real estate or other assets tied to a different jurisdiction. Washington, for example, states that its estate tax can apply to a Washington resident’s property wherever it sits and can also apply to certain Washington property owned by a nonresident.

Smart Estate Planning Starts With the Right Tax Question

The useful question is not simply, “Will the IRS tax the inheritance?” A better starting point asks where the deceased person lived, what the estate owned, whether property sat in another state, whether the estate included substantial gifts during life, and whether a surviving spouse could benefit from portability. Those details can determine which tax rules matter and which ones do not.

Families also need to separate estate taxes from ordinary income tax issues that arise after death. The IRS’s 2026 guidance for seniors highlights the importance of keeping federal tax records and Social Security information accessible, including documents such as Forms SSA-1099 and SSA-1042S. Good recordkeeping will not eliminate a tax, but it can save an executor from playing detective during an already difficult period.

The $15 Million Federal Number Is Not the Whole Story

For 2026, the federal estate tax threshold gives most ordinary families considerable breathing room, with the basic exclusion amount set at $15 million for deaths during the year. The bigger surprise may come from state law, because several jurisdictions impose estate taxes at substantially lower levels. Inheritance taxes add another layer because they can focus on the beneficiary rather than the estate. The result makes location, asset type, family relationships, and estate size far more important than a single federal number.

What has surprised you most about the difference between federal and state estate taxes? Share your thoughts in the comments.