Does Washington State Have an Inheritance Tax? Estate Tax Rules

Washington State does not have an inheritance tax. It has an estate tax, which is paid out of the deceased person’s estate before anything reaches the heirs, rather than charged to the people receiving the property.¹ The old inheritance tax was repealed effective January 1, 1982.² So if you are inheriting from someone who lived in Washington, you will not get a tax bill from the state for what you receive. The estate itself may owe tax, and the personal representative handles that before distributions are finalized.³

Who Owes the Estate Tax

The estate tax is a transfer tax on the right to pass property at death.¹ It applies to transfers of property located in Washington, including intangible property owned by state residents.⁴ A nonresident can also owe the tax if they held real estate or tangible personal property inside Washington.⁵

The personal representative files the return and pays the tax. If they distribute assets before the state’s claim is settled, they can be held personally liable.³

When the Tax Actually Applies

Most estates owe nothing because the gross estate falls below the filing threshold. The exclusion amount depends on the date of death:⁶⁷

Deaths between July 1, 2018 and June 30, 2025: $2,193,000
Deaths between July 1, 2025 and December 31, 2025: $3 million
Deaths in 2026 and later: adjusted annually for inflation using Seattle-area indices

If the gross estate equals or exceeds the applicable amount, a return is required. Rates are graduated, so the tax grows with the size of the estate, and estates of people who die on or after July 1, 2025 are subject to a different rate structure with higher top rates than before.⁴

What Goes Into the Gross Estate

The gross estate is the fair market value of the decedent’s property interests at the time of death. It generally includes:⁸

Real estate
Bank accounts, stocks, and investment portfolios
Life insurance proceeds subject to federal inclusion rules
Retirement accounts and personal property

Deductions bring the taxable total down. State law allows deductions for:⁸⁹¹⁰

Qualifying farm property
Assets passing to a surviving spouse or state-registered domestic partner
Funeral expenses and administrative costs
Valid debts owed by the decedent at death

Values are set as of the date of death, though an alternate valuation date is available when a specific federal election applies. Appraisals are not required in every case but are commonly used to support fair market value on complex assets.¹¹⁸

Filing, Deadlines, and Penalties

The return and full payment are due nine months after the date of death. A one-time automatic six-month filing extension is available if requested in writing before the original due date, but it does not push back the payment deadline. Interest accrues on any tax not paid by the nine-month mark.¹¹¹²

Returns can be filed through the My DOR portal or mailed to the Department of Revenue, with payment by electronic funds transfer or paper check.⁵ Official forms are posted on the department’s website.¹³

Late-filing penalties kick in only after the department sends a written notice that a return is required. A representative who voluntarily files before receiving that notice owes no penalty. When the penalty does apply, it is 5 percent of the tax due per month the return is late, capped at the lesser of 25 percent of the tax or $1,500.¹⁴

Once the return is processed and taxes paid, the Department of Revenue issues a release. That document confirms the estate’s obligations are satisfied and clears the state’s claim against the property, so the personal representative can finish distributing assets to the heirs.¹⁵

1
Washington State Legislature. Washington WAC 458-57-105
2
Washington State Legislature. Washington RCW 83.08.045
3
Washington State Legislature. Washington RCW 83.100.120
4
Washington State Legislature. Washington RCW 83.100.040
5
Washington Department of Revenue. Estate Tax
6
Washington State Legislature. Washington RCW 83.100.050
7
Washington State Legislature. Washington RCW 83.100.020
8
Washington State Legislature. Washington WAC 458-57-115
9
Washington State Legislature. Washington RCW 83.100.047
10
Washington State Legislature. Washington RCW 83.100.046
11
Washington State Legislature. Washington WAC 458-57-135
12
Washington Department of Revenue. My DOR Help
13
Washington Department of Revenue. Estate Tax Filing Options and Forms
14
Washington State Legislature. Washington RCW 83.100.070
15
Washington State Legislature. Washington RCW 83.100.080