Understanding Inheritance Tax in 2026: A Complete Guide

What is inheritance tax?

Inheritance tax is a tax on the right to receive property from someone who has died. Unlike income tax, it isn't based on your total income for the year — it's a one-time tax on the specific transfer, and it's paid by the beneficiary, not the estate. The amount owed almost always depends on two things: how closely related you were to the deceased, and how much you're receiving. A surviving spouse is treated very differently from, say, a family friend or a distant cousin, even if they inherit the exact same dollar amount.

It's easy to confuse inheritance tax with estate tax, but they work differently. Estate tax is assessed against the estate itself — the total pool of everything the deceased owned — before anything is distributed, and it applies (at the federal level) only above a very high exemption ($15 million per person in 2026). Inheritance tax, by contrast, is assessed against each individual beneficiary's share, and several states that impose it have exemption thresholds in the thousands, not millions, of dollars. You can owe inheritance tax on an inheritance far too small to ever trigger estate tax.

Which states have inheritance tax in 2026?

As of 2026, only five states still levy a state inheritance tax: Kentucky, Maryland, Nebraska, New Jersey, and Pennsylvania. That list has been shrinking — Iowa phased its inheritance tax out completely for deaths on or after January 1, 2025, following a multi-year phase-down. If none of these five states are where the deceased lived (or where their real property was located), you almost certainly don't owe state inheritance tax, no matter where you live.

Every one of these states organizes beneficiaries into relationship-based classes, and in every one of them, life insurance proceeds paid to a named beneficiary are exempt. Beyond that, the details vary a lot state to state:

• Kentucky fully exempts spouses, parents, children, grandchildren, and siblings (Class A). Nieces, nephews, aunts, uncles, and in-laws (Class B) get a $1,000 exemption, then pay 4–16% on a progressive scale. Everyone else (Class C) gets a $500 exemption and pays 6–16%.
• Maryland exempts a broad list of relatives — spouses, children, parents, grandparents, siblings, and a child's spouse — entirely. Anyone outside that list, such as a niece, nephew, or friend, pays a flat 10% with no exemption amount. Maryland also has a separate estate tax on large estates, which is a different tax entirely.
• Nebraska exempts spouses fully. Children, parents, and grandchildren get a $100,000 exemption and pay 1% above it. Siblings, aunts, uncles, nieces, nephews, and cousins get a $40,000 exemption and pay 11% above it. Everyone else gets a $25,000 exemption and pays 15% above it.
• New Jersey fully exempts spouses, domestic partners, parents, grandparents, children, and grandchildren (Class A). Siblings and a child's spouse (Class C) get a $25,000 exemption before rates of 11–16% apply. Everyone else (Class D) has no exemption and pays 15–16%.
• Pennsylvania fully exempts spouses. Children, grandchildren, and their spouses pay a flat 4.5% from the first dollar — there's no exemption threshold. Siblings pay a flat 12%, and everyone else pays 15%, both with no exemption either.

How is inheritance tax actually calculated?

The general formula is the same across all five states, even though the numbers differ: figure out which relationship class you fall into, subtract that class's exemption amount (if any) from what you're receiving, and apply that class's tax rate — either a flat percentage or a progressive bracket schedule — to what's left.

For example, a niece inheriting $50,000 from an aunt in Kentucky falls into Class B. The first $1,000 is exempt. The remaining $49,000 is taxed progressively across Kentucky's Class B brackets (4% up to $10,000, 5% on the next $10,000, and so on), producing a total tax bill in the low thousands of dollars — a meaningfully different outcome than if that same $50,000 had gone to a daughter instead, who as a Class A beneficiary would owe nothing at all.

This is exactly the kind of calculation the DueMATH inheritance tax calculator runs for you — enter the state, your relationship to the deceased, and the amount, and it walks through the exemption and bracket math automatically.

Exemptions worth knowing about

Beyond the relationship-based exemptions above, a few narrower exemptions show up across these states and are easy to miss:

• Life insurance proceeds paid to a named beneficiary — exempt in all five states.
• Transfers to qualified charities, government entities, and (in most states) religious or educational institutions.
• New Jersey exempts any transfer under $500 outright, regardless of relationship class.
• Pennsylvania exempts transfers between a parent and a child who was 21 or younger at the time of death, in either direction.
• Retirement accounts and certain government annuities can carry their own exemption rules depending on the state and how they're structured — this is worth confirming with a professional rather than assuming.

Strategies to reduce what you owe

If you're planning ahead — either for your own estate or for a relative's — a few approaches commonly come up in inheritance tax planning:

• Gifting during life. Money given away before death isn't part of the estate and generally isn't subject to inheritance tax (though it may have federal gift tax implications above the annual exclusion).
• Irrevocable trusts. Depending on the state and how the trust is structured, moving assets into an irrevocable trust can shift how — or whether — inheritance tax applies when they're eventually distributed.
• Naming beneficiaries directly. Life insurance and certain retirement accounts pass outside probate to a named beneficiary, and in most cases avoid inheritance tax entirely — a meaningful contrast to assets that pass through a will.
• Being deliberate about who inherits what. Because tax rates differ so much by relationship class, the same total estate can generate very different tax bills depending on which assets go to which beneficiaries.

None of these are one-size-fits-all, and getting them wrong can cost more than the tax you were trying to avoid. If the numbers involved are significant, this is genuinely worth a conversation with an estate attorney rather than a DIY project.

Frequently asked questions