Planning Considerations for State Death Taxes

With the recent increase in the federal unified gift and estate tax exclusion amount of up to $15 million per person (indexed for inflation), the overwhelming majority of households will not have to plan for federal estate taxes. However, taxes on estates at the state level are still an important factor for many. Careful consideration must be given to efficiently transfer wealth to heirs given the differences between the federal transfer tax system and certain state rules. Currently, 12 states and the District of Columbia tax estates, while five states tax inheritances. Maryland is the only state that imposes both. Also, the only state that taxes lifetime gifts is Connecticut. Note that, like the federal system, property left to surviving spouses or charities is not subject to state transfer taxes.

How Do State Transfer Taxes Differ?

  • Tax applied at much lower wealth thresholds

The level of wealth upon which estate taxes apply at the state level may be significantly lower than the federal threshold of $15 million. For example, Oregon taxes estates over $1 million, Rhode Island taxes estates over $1,802,431 and Massachusetts taxes estates over $2 million. Here’s a look at estate tax exemptions by state, including the tax rate(s):

table state death taxes

  • Most states don’t allow portability between spouses

The federal system allows transfer of the unused portion of the lifetime gift exemption from the first deceased spouse to the surviving spouse. This is known as the portability provision. At the death of the first spouse, a federal estate tax return (IRS Form 706) must be filed to claim the deceased spouse’s unused exemption (DSUE). For example, a surviving spouse may benefit from their own $15 million exemption plus their deceased spouse’s $15 million exemption, if that spouse did not make any lifetime gifts that would have reduced their unified gift and estate tax exemption. Only two states (MD and HI) allow portability under state tax systems.

  • Beware the “cliff” effect

While most states apply tax on just the amount of the estate above the exemption threshold, there are a couple of states (IL, NY) that will essentially tax the entire estate if the value of the estate at death exceeds the exemption. For example, consider a taxable estate valued at $5.1 million within a state where the exemption threshold is $5 million. Under federal rules, and most states, the amount of the estate subject to tax would only be the amount exceeding the exemption ($100,000 in this example). However, in a state with a “cliff” system, if the estate exceeds the exemption, then the entire estate is taxed, resulting in a much higher tax bill. For this reason, some estate plans for residents of these states may include a clause that triggers a charitable gift for the dollar amount that exceeds the state’s exemption threshold for estates. Make sure to consult with a qualified legal professional for guidance on specific state rules.

  • Certain inheritances may be taxed

Under the federal system, heirs are not taxed on inheritances. However, five states (KY, MD, NE, NJ and PA) will tax certain heirs. Depending on the state there will be different dollar thresholds and rules that apply. Typically, the determination of the inheritance tax will depend on the relationship of the heir to the deceased. For example, closer relatives such as a child receive more preferential treatment under these state tax systems than more distant or non-relatives. For example, New Jersey classifies four types of beneficiaries, the following of whom are exempt from inheritance tax: surviving spouse, civil union partner, domestic partner, parents, grandparents, children, stepchildren, grandchildren and great-grandchildren.*

* New Jersey Department of Taxation, 2026.

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